Milwaukee | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Climate data for Milwaukee ( Mitchell International Airport), 1991–2020 normals, [A] extremes 1871–present [B] | |||||||||||||
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Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Year |
Record high °F (°C) | 54 (12) |
63 (17) |
79 (26) |
90 (32) |
95 (35) |
104 (40) |
106 (41) |
102 (39) |
99 (37) |
88 (31) |
72 (22) |
59 (15) |
106 (41) |
Mean maximum °F (°C) | 41.5 (5.3) |
43.9 (6.6) |
61.7 (16.5) |
77.7 (25.4) |
85.8 (29.9) |
91.9 (33.3) |
93.4 (34.1) |
91.8 (33.2) |
88.2 (31.2) |
78.1 (25.6) |
60.1 (15.6) |
44.4 (6.9) |
95.0 (35.0) |
Mean daily maximum °F (°C) | 21.9 (−5.6) |
25.2 (−3.8) |
38.8 (3.8) |
52.9 (11.6) |
66.6 (19.2) |
76.8 (24.9) |
81.9 (27.7) |
80.2 (26.8) |
73.6 (23.1) |
59.5 (15.3) |
42.4 (5.8) |
27.1 (−2.7) |
53.9 (12.2) |
Daily mean °F (°C) | 15.1 (−9.4) |
18.1 (−7.7) |
30.9 (−0.6) |
44.4 (6.9) |
57.0 (13.9) |
67.6 (19.8) |
73.2 (22.9) |
72.3 (22.4) |
64.9 (18.3) |
51.3 (10.7) |
35.1 (1.7) |
20.5 (−6.4) |
45.9 (7.7) |
Mean daily minimum °F (°C) | 8.2 (−13.2) |
10.9 (−11.7) |
23.4 (−4.8) |
36.0 (2.2) |
47.8 (8.8) |
58.5 (14.7) |
64.8 (18.2) |
64.2 (17.9) |
56.5 (13.6) |
43.0 (6.1) |
27.7 (−2.4) |
14.0 (−10.0) |
37.9 (3.3) |
Mean minimum °F (°C) | −13.5 (−25.3) |
−8.0 (−22.2) |
5.2 (−14.9) |
23.7 (−4.6) |
36.3 (2.4) |
45.7 (7.6) |
54.7 (12.6) |
55.0 (12.8) |
42.3 (5.7) |
28.8 (−1.8) |
12.6 (−10.8) |
−5.8 (−21.0) |
−17.0 (−27.2) |
Record low °F (°C) | −35 (−37) |
−35 (−37) |
−15 (−26) |
10 (−12) |
21 (−6) |
34 (1) |
39 (4) |
43 (6) |
28 (−2) |
14 (−10) |
−20 (−29) |
−31 (−35) |
−35 (−37) |
Average precipitation inches (mm) | 1.8 (45) |
1.7 (43) |
2.2 (56) |
3.9 (98) |
3.5 (90) |
4.4 (111) |
3.4 (86) |
3.7 (93) |
3.1 (80) |
2.8 (71) |
2.2 (57) |
1.9 (48) |
34.6 (878) |
Average snowfall inches (cm) | 20 (50) |
18 (46) |
11 (27) |
3.7 (9.3) |
0.0 (0.0) |
0.0 (0.0) |
0.0 (0.0) |
0.0 (0.0) |
0.0 (0.0) |
0.7 (1.8) |
7.5 (19) |
19 (47) |
79.9 (200.1) |
Average precipitation days (≥ 0.2 mm) | 11.4 | 10.0 | 10.7 | 12.2 | 11.7 | 11.1 | 9.5 | 9.5 | 8.6 | 10.3 | 10.2 | 10.3 | 125.5 |
Average snowy days (≥ 0.2 cm) | 11.0 | 9.1 | 6.0 | 1.8 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.6 | 4.2 | 9.3 | 35.1 |
Average relative humidity (%) | 72.3 | 71.9 | 71.4 | 68.5 | 68.5 | 69.7 | 71.5 | 74.9 | 75.4 | 72.5 | 74.5 | 75.9 | 72.3 |
Average dew point °F (°C) | 2.7 (−16.3) |
6.4 (−14.2) |
19.2 (−7.1) |
31.8 (−0.1) |
43.7 (6.5) |
54.3 (12.4) |
60.6 (15.9) |
60.4 (15.8) |
53.4 (11.9) |
39.6 (4.2) |
25.0 (−3.9) |
9.3 (−12.6) |
33.9 (1.0) |
Mean monthly sunshine hours | 140.2 | 151.5 | 185.4 | 213.5 | 275.5 | 304.5 | 321.1 | 281.2 | 215.1 | 178.0 | 112.8 | 104.8 | 2,483.6 |
Percent possible sunshine | 48 | 51 | 50 | 53 | 61 | 66 | 69 | 65 | 57 | 52 | 38 | 37 | 56 |
Average ultraviolet index | 1 | 2 | 4 | 5 | 7 | 8 | 8 | 8 | 6 | 3 | 2 | 1 | 5 |
Source 1: NOAA (relative humidity, dew point, and sun 1961–1990) [2] [3] [4] [5] | |||||||||||||
Source 2: Weather Atlas [6] |
Grand Rapids | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Climate data for Grand Rapids, Michigan ( Gerald Ford Int'l), 1991–2020 normals, extremes 1892−present [a] | |||||||||||||
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Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Year |
Record high °F (°C) | 59 (15) |
61 (16) |
82 (28) |
88 (31) |
95 (35) |
102 (39) |
108 (42) |
102 (39) |
99 (37) |
88 (31) |
75 (24) |
61 (16) |
108 (42) |
Mean maximum °F (°C) | 42.3 (5.7) |
43.0 (6.1) |
62.4 (16.9) |
77.4 (25.2) |
86.0 (30.0) |
91.8 (33.2) |
92.5 (33.6) |
91.0 (32.8) |
87.8 (31.0) |
77.0 (25.0) |
59.9 (15.5) |
45.3 (7.4) |
94.3 (34.6) |
Mean daily maximum °F (°C) | 21.9 (−5.6) |
24.6 (−4.1) |
39.0 (3.9) |
55.9 (13.3) |
69.8 (21.0) |
79.3 (26.3) |
83.1 (28.4) |
81.0 (27.2) |
73.9 (23.3) |
58.8 (14.9) |
41.7 (5.4) |
27.1 (−2.7) |
54.7 (12.6) |
Daily mean °F (°C) | 15.8 (−9.0) |
17.6 (−8.0) |
30.4 (−0.9) |
45.9 (7.7) |
59.2 (15.1) |
68.9 (20.5) |
72.9 (22.7) |
71.1 (21.7) |
63.5 (17.5) |
49.6 (9.8) |
34.5 (1.4) |
21.4 (−5.9) |
45.9 (7.7) |
Mean daily minimum °F (°C) | 9.7 (−12.4) |
10.6 (−11.9) |
21.6 (−5.8) |
35.4 (1.9) |
48.6 (9.2) |
58.3 (14.6) |
62.4 (16.9) |
61.2 (16.2) |
53.1 (11.7) |
40.5 (4.7) |
27.3 (−2.6) |
15.6 (−9.1) |
37.0 (2.8) |
Mean minimum °F (°C) | −11.7 (−24.3) |
−9.0 (−22.8) |
2.1 (−16.6) |
21.0 (−6.1) |
33.4 (0.8) |
44.1 (6.7) |
51.1 (10.6) |
49.3 (9.6) |
38.7 (3.7) |
26.8 (−2.9) |
13.5 (−10.3) |
−2.7 (−19.3) |
−15.3 (−26.3) |
Record low °F (°C) | −31 (−35) |
−33 (−36) |
−18 (−28) |
1 (−17) |
21 (−6) |
32 (0) |
41 (5) |
39 (4) |
27 (−3) |
16 (−9) |
−15 (−26) |
−27 (−33) |
−33 (−36) |
Average precipitation inches (mm) | 2.5 (64) |
2.1 (54) |
2.4 (61) |
4.0 (101) |
4.0 (102) |
3.9 (100) |
3.9 (98) |
3.5 (90) |
3.4 (87) |
4.0 (102) |
3.1 (79) |
2.5 (63) |
39.3 (1,001) |
Average snowfall inches (cm) | 27 (68) |
22 (56) |
15 (39) |
3.2 (8.1) |
0.0 (0.0) |
0.0 (0.0) |
0.0 (0.0) |
0.0 (0.0) |
0.0 (0.0) |
0.5 (1.3) |
11 (28) |
25 (63) |
103.7 (263.4) |
Average extreme snow depth inches (cm) | 21 (54) |
27 (68) |
26 (65) |
3.5 (9) |
0 (0) |
0 (0) |
0 (0) |
0 (0) |
0 (0) |
0 (0) |
5.5 (14) |
14 (35) |
30 (75) |
Average precipitation days (≥ 0.2 mm) | 16.8 | 13.1 | 11.8 | 12.8 | 12.5 | 10.7 | 10.0 | 9.9 | 10.2 | 12.5 | 12.9 | 15.5 | 148.7 |
Average snowy days (≥ 0.2 cm) | 15.9 | 11.5 | 7.9 | 2.8 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.7 | 5.5 | 13.9 | 50.9 |
Average relative humidity (%) | 77.2 | 74.2 | 71.1 | 66.8 | 65.4 | 68.1 | 69.6 | 73.3 | 76.1 | 74.6 | 76.9 | 79.5 | 72.7 |
Mean monthly sunshine hours | 88.3 | 116.0 | 168.2 | 210.2 | 255.9 | 286.8 | 296.5 | 264.2 | 206.0 | 152.4 | 82.0 | 62.1 | 2,188.6 |
Percent possible sunshine | 30 | 39 | 45 | 52 | 56 | 62 | 64 | 61 | 55 | 45 | 28 | 22 | 49 |
Source: NOAA (relative humidity and sun 1961−1990) [9] [10] [11] |
Detroit | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Climate data for Detroit ( DTW), 1991–2020 normals, extremes 1874-present | |||||||||||||
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Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Year |
Record high °F (°C) | 57 (14) |
61 (16) |
81 (27) |
88 (31) |
95 (35) |
104 (40) |
106 (41) |
104 (40) |
100 (38) |
90 (32) |
72 (22) |
61 (16) |
106 (41) |
Mean maximum °F (°C) | 44.1 (6.7) |
46.2 (7.9) |
63.9 (17.7) |
77.7 (25.4) |
87.3 (30.7) |
92.7 (33.7) |
93.7 (34.3) |
92.1 (33.4) |
89.2 (31.8) |
78.8 (26.0) |
61.3 (16.3) |
47.1 (8.4) |
95.4 (35.2) |
Mean daily maximum °F (°C) | 23.4 (−4.8) |
26.2 (−3.2) |
40.5 (4.7) |
56.8 (13.8) |
70.3 (21.3) |
79.7 (26.5) |
83.7 (28.7) |
81.3 (27.4) |
74.5 (23.6) |
60.3 (15.7) |
43.2 (6.2) |
28.2 (−2.1) |
55.7 (13.2) |
Daily mean °F (°C) | 16.9 (−8.4) |
19.0 (−7.2) |
31.8 (−0.1) |
47.1 (8.4) |
60.3 (15.7) |
70.0 (21.1) |
74.1 (23.4) |
72.3 (22.4) |
64.9 (18.3) |
51.3 (10.7) |
35.8 (2.1) |
22.3 (−5.4) |
47.2 (8.4) |
Mean daily minimum °F (°C) | 10.2 (−12.1) |
11.8 (−11.2) |
23.2 (−4.9) |
37.2 (2.9) |
50.2 (10.1) |
60.3 (15.7) |
64.4 (18.0) |
63.1 (17.3) |
55.6 (13.1) |
42.3 (5.7) |
28.6 (−1.9) |
16.3 (−8.7) |
38.6 (3.7) |
Mean minimum °F (°C) | −8.9 (−22.7) |
−5.4 (−20.8) |
6.6 (−14.1) |
23.7 (−4.6) |
36.3 (2.4) |
47.3 (8.5) |
54.1 (12.3) |
53.4 (11.9) |
41.5 (5.3) |
29.1 (−1.6) |
14.4 (−9.8) |
−0.2 (−17.9) |
−12.6 (−24.8) |
Record low °F (°C) | −29 (−34) |
−29 (−34) |
−9 (−23) |
7 (−14) |
25 (−4) |
36 (2) |
43 (6) |
37 (3) |
28 (−2) |
16 (−9) |
−6 (−21) |
−20 (−29) |
−29 (−34) |
Average precipitation inches (mm) | 2.2 (57) |
2.1 (53) |
2.4 (62) |
3.3 (83) |
3.7 (94) |
3.3 (83) |
3.5 (89) |
3.3 (83) |
3.2 (82) |
2.5 (64) |
2.6 (65) |
2.2 (57) |
34.3 (872) |
Average snowfall inches (cm) | 22 (56) |
20 (52) |
10 (26) |
2.4 (6) |
0.0 (0.0) |
0.0 (0.0) |
0.0 (0.0) |
0.0 (0.0) |
0.0 (0.0) |
0.0 (0.0) |
5.1 (13) |
17 (43) |
76.5 (196) |
Average extreme snow depth inches (cm) | 15 (37) |
20 (50) |
19 (47) |
0.8 (2) |
0 (0) |
0 (0) |
0 (0) |
0 (0) |
0 (0) |
0 (0) |
1.2 (3) |
7.1 (18) |
20 (52) |
Average precipitation days (≥ 0.2 mm) | 13.4 | 11.0 | 11.1 | 12.5 | 12.9 | 10.7 | 10.5 | 9.7 | 9.5 | 10.6 | 11.0 | 13.1 | 136 |
Average snowy days (≥ 0.2 cm) | 11.7 | 10.2 | 6.3 | 1.5 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.3 | 3.6 | 10.0 | 43.6 |
Average relative humidity (%) | 74.7 | 72.5 | 70.0 | 66.0 | 65.3 | 67.3 | 68.5 | 71.5 | 73.4 | 71.6 | 74.6 | 76.7 | 71.0 |
Average dew point °F (°C) | 7.2 (−13.8) |
8.6 (−13.0) |
20.5 (−6.4) |
33.3 (0.7) |
45.7 (7.6) |
55.6 (13.1) |
60.4 (15.8) |
59.7 (15.4) |
53.2 (11.8) |
39.6 (4.2) |
27.0 (−2.8) |
12.9 (−10.6) |
35.3 (1.8) |
Mean monthly sunshine hours | 119.9 | 138.3 | 184.9 | 217.0 | 275.9 | 301.8 | 317.0 | 283.5 | 227.6 | 176.0 | 106.3 | 87.7 | 2,435.9 |
Percent possible sunshine | 41 | 47 | 50 | 54 | 61 | 66 | 69 | 66 | 61 | 51 | 36 | 31 | 55 |
[ citation needed] |
Chicago, Illinois | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Climate data for Chicago (O'Hare Int'l Airport), 1991–2020 normals, [b] extremes 1871–present [c] | |||||||||||||
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Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Year |
Record high °F (°C) | 57 (14) |
66 (19) |
82 (28) |
90 (32) |
99 (37) |
104 (40) |
106 (41) |
102 (39) |
100 (38) |
88 (31) |
75 (24) |
63 (17) |
106 (41) |
Mean maximum °F (°C) | 43.3 (6.3) |
48.0 (8.9) |
65.7 (18.7) |
79.2 (26.2) |
88.0 (31.1) |
93.0 (33.9) |
94.8 (34.9) |
93.2 (34.0) |
89.8 (32.1) |
76.3 (24.6) |
61.5 (16.4) |
47.5 (8.6) |
96.1 (35.6) |
Mean daily maximum °F (°C) | 22.6 (−5.2) |
26.8 (−2.9) |
41.5 (5.3) |
57.2 (14.0) |
70.5 (21.4) |
80.4 (26.9) |
84.6 (29.2) |
82.6 (28.1) |
75.6 (24.2) |
61.0 (16.1) |
43.0 (6.1) |
27.7 (−2.4) |
56.1 (13.4) |
Daily mean °F (°C) | 16.2 (−8.8) |
19.8 (−6.8) |
33.6 (0.9) |
47.8 (8.8) |
60.6 (15.9) |
70.5 (21.4) |
75.4 (24.1) |
73.8 (23.2) |
66.4 (19.1) |
52.2 (11.2) |
36.0 (2.2) |
21.6 (−5.8) |
47.8 (8.8) |
Mean daily minimum °F (°C) | 9.9 (−12.3) |
12.7 (−10.7) |
25.5 (−3.6) |
38.5 (3.6) |
50.5 (10.3) |
60.8 (16.0) |
66.4 (19.1) |
65.1 (18.4) |
57.0 (13.9) |
43.5 (6.4) |
28.8 (−1.8) |
15.4 (−9.2) |
39.5 (4.2) |
Mean minimum °F (°C) | −13.5 (−25.3) |
−8.5 (−22.5) |
6.4 (−14.2) |
23.7 (−4.6) |
36.7 (2.6) |
46.0 (7.8) |
54.5 (12.5) |
54.3 (12.4) |
41.7 (5.4) |
27.9 (−2.3) |
11.8 (−11.2) |
−5.8 (−21.0) |
−17.5 (−27.5) |
Record low °F (°C) | −36 (−38) |
−29 (−34) |
−17 (−27) |
5 (−15) |
27 (−3) |
36 (2) |
45 (7) |
43 (6) |
28 (−2) |
12 (−11) |
−8 (−22) |
−35 (−37) |
−36 (−38) |
Average precipitation inches (mm) | 2.0 (51) |
2.0 (50) |
2.4 (62) |
3.7 (95) |
4.5 (114) |
4.1 (104) |
3.7 (94) |
4.3 (108) |
3.2 (81) |
3.4 (87) |
2.4 (61) |
2.1 (54) |
37.8 (961) |
Average snowfall inches (cm) | 18.4 (46.8) |
18.0 (45.7) |
9.6 (24.5) |
1.0 (2.5) |
0.0 (0.0) |
0.0 (0.0) |
0.0 (0.0) |
0.0 (0.0) |
0.0 (0.0) |
0.1 (0.3) |
5.0 (12.8) |
18.9 (48.1) |
71 (180.7) |
Average precipitation days (≥ 0.2 mm) | 11.0 | 9.4 | 10.8 | 12.3 | 12.5 | 11.1 | 9.7 | 9.4 | 8.5 | 10.5 | 10.0 | 10.6 | 127.0 |
Average snowy days (≥ 0.2 cm) | 10.6 | 8.8 | 4.5 | 1.2 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.3 | 3.5 | 8.8 | 37.7 |
Average relative humidity (%) | 72.2 | 71.6 | 69.7 | 64.9 | 64.1 | 65.6 | 68.5 | 70.7 | 71.1 | 68.6 | 72.5 | 75.5 | 69.6 |
Average dew point °F (°C) | 4.6 (−15.2) |
8.6 (−13.0) |
21.7 (−5.7) |
34.0 (1.1) |
45.7 (7.6) |
55.8 (13.2) |
61.7 (16.5) |
61.0 (16.1) |
53.8 (12.1) |
39.9 (4.4) |
26.2 (−3.2) |
11.1 (−11.6) |
35.3 (1.9) |
Mean monthly sunshine hours | 135.8 | 136.2 | 187.0 | 215.3 | 281.9 | 311.4 | 318.4 | 283.0 | 226.6 | 193.2 | 113.3 | 106.3 | 2,508.4 |
Percent possible sunshine | 46 | 46 | 51 | 54 | 62 | 68 | 69 | 66 | 60 | 56 | 38 | 37 | 56 |
Average ultraviolet index | 1 | 2 | 4 | 6 | 7 | 9 | 9 | 8 | 6 | 4 | 2 | 1 | 5 |
Source: NOAA (relative humidity, dew point and sun 1961–1990) [2] [16] [17] |
Omaha | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Climate data for Omaha ( Eppley Airfield), 1991–2020 normals [d], extremes 1871–present [e] | |||||||||||||
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Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Year |
Record high °F (°C) | 61 (16) |
70 (21) |
86 (30) |
95 (35) |
102 (39) |
108 (42) |
115 (46) |
111 (44) |
104 (40) |
95 (35) |
77 (25) |
64 (18) |
115 (46) |
Mean maximum °F (°C) | 47.1 (8.4) |
52.5 (11.4) |
71.4 (21.9) |
84.6 (29.2) |
91.2 (32.9) |
95.9 (35.5) |
98.4 (36.9) |
96.8 (36.0) |
93.0 (33.9) |
83.5 (28.6) |
65.8 (18.8) |
49.3 (9.6) |
99.9 (37.7) |
Mean daily maximum °F (°C) | 24.6 (−4.1) |
29.7 (−1.3) |
46.8 (8.2) |
62.2 (16.8) |
74.7 (23.7) |
84.4 (29.1) |
88.2 (31.2) |
85.8 (29.9) |
79.2 (26.2) |
63.7 (17.6) |
45.0 (7.2) |
28.8 (−1.8) |
59.4 (15.2) |
Daily mean °F (°C) | 15.4 (−9.2) |
19.9 (−6.7) |
35.6 (2.0) |
50.7 (10.4) |
63.7 (17.6) |
73.9 (23.3) |
78.1 (25.6) |
75.7 (24.3) |
67.6 (19.8) |
52.5 (11.4) |
34.9 (1.6) |
19.8 (−6.8) |
49.0 (9.4) |
Mean daily minimum °F (°C) | 6.3 (−14.3) |
10.2 (−12.1) |
24.6 (−4.1) |
39.4 (4.1) |
52.7 (11.5) |
63.3 (17.4) |
68.0 (20.0) |
65.7 (18.7) |
56.1 (13.4) |
41.4 (5.2) |
24.8 (−4.0) |
10.8 (−11.8) |
38.6 (3.7) |
Mean minimum °F (°C) | −17 (−27) |
−11.0 (−23.9) |
3.4 (−15.9) |
22.3 (−5.4) |
37.0 (2.8) |
49.8 (9.9) |
55.8 (13.2) |
53.6 (12.0) |
39.4 (4.1) |
23.9 (−4.5) |
7.5 (−13.6) |
−9.8 (−23.2) |
−19.7 (−28.7) |
Record low °F (°C) | −42 (−41) |
−35 (−37) |
−22 (−30) |
3 (−16) |
25 (−4) |
39 (4) |
45 (7) |
43 (6) |
28 (−2) |
7 (−14) |
−20 (−29) |
−35 (−37) |
−42 (−41) |
Average precipitation inches (mm) | 0.7 (19) |
0.9 (24) |
1.8 (45) |
3.2 (81) |
4.6 (118) |
4.4 (113) |
3.5 (90) |
4.6 (117) |
3.0 (75) |
2.3 (59) |
1.5 (37) |
1.2 (31) |
31.7 (809) |
Average snowfall inches (cm) | 9.4 (24) |
9.8 (25) |
5.1 (13) |
1.6 (4) |
0.0 (0.0) |
0.0 (0.0) |
0.0 (0.0) |
0.0 (0.0) |
0.0 (0.0) |
0.4 (1) |
3.9 (10) |
13 (34) |
43.2 (111) |
Average precipitation days (≥ 0.2 mm) | 6.9 | 7.3 | 8.0 | 10.5 | 12.8 | 11.0 | 9.9 | 8.9 | 7.8 | 7.2 | 6.0 | 6.8 | 103.1 |
Average snowy days (≥ 0.2 cm) | 6.6 | 6.0 | 3.4 | 1.1 | 0.1 | 0.0 | 0.0 | 0.0 | 0.0 | 0.6 | 2.2 | 5.8 | 25.8 |
Average relative humidity (%) | 71.1 | 71.1 | 66.3 | 60.6 | 63.8 | 65.8 | 68.3 | 70.9 | 71.8 | 67.4 | 71.1 | 73.8 | 68.5 |
Mean monthly sunshine hours | 167.8 | 157.6 | 206.4 | 230.1 | 277.1 | 314.0 | 332.5 | 296.3 | 245.5 | 217.5 | 148.0 | 134.1 | 2,726.9 |
Percent possible sunshine | 56 | 53 | 56 | 58 | 62 | 69 | 72 | 69 | 66 | 63 | 50 | 47 | 61 |
Average ultraviolet index | 2 | 2 | 4 | 6 | 8 | 9 | 9 | 8 | 6 | 4 | 2 | 1 | 5 |
Source: NOAA (relative humidity 1961–1990 at Eppley Airfield, sun 1961–1990 at former Omaha NWS weather forecast office at 41°21′13″N 96°01′24″W / 41.3536°N 96.0233°W) [20] [2] [21] [22] |
Toledo | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Climate data for Toledo, Ohio ( Toledo Express Airport), 1991−2020 normals, [f] extremes 1871−present [g] | |||||||||||||
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Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Year |
Record high °F (°C) | 63 (17) |
63 (17) |
79 (26) |
88 (31) |
99 (37) |
104 (40) |
106 (41) |
102 (39) |
100 (38) |
90 (32) |
75 (24) |
64 (18) |
106 (41) |
Mean maximum °F (°C) | 45.9 (7.7) |
48.7 (9.3) |
64.9 (18.3) |
78.4 (25.8) |
88.7 (31.5) |
94.5 (34.7) |
94.3 (34.6) |
92.5 (33.6) |
90.3 (32.4) |
80.4 (26.9) |
62.8 (17.1) |
48.7 (9.3) |
96.3 (35.7) |
Mean daily maximum °F (°C) | 25.7 (−3.5) |
28.8 (−1.8) |
43.0 (6.1) |
59.7 (15.4) |
73.2 (22.9) |
82.8 (28.2) |
86.5 (30.3) |
84.0 (28.9) |
77.7 (25.4) |
63.1 (17.3) |
45.7 (7.6) |
30.4 (−0.9) |
58.4 (14.7) |
Daily mean °F (°C) | 18.5 (−7.5) |
20.8 (−6.2) |
33.8 (1.0) |
49.1 (9.5) |
62.1 (16.7) |
71.6 (22.0) |
75.4 (24.1) |
73.6 (23.1) |
66.4 (19.1) |
52.9 (11.6) |
37.4 (3.0) |
23.7 (−4.6) |
48.8 (9.3) |
Mean daily minimum °F (°C) | 11.3 (−11.5) |
13.1 (−10.5) |
24.4 (−4.2) |
38.5 (3.6) |
50.9 (10.5) |
60.4 (15.8) |
64.2 (17.9) |
62.8 (17.1) |
55.0 (12.8) |
42.4 (5.8) |
29.1 (−1.6) |
17.1 (−8.3) |
39.1 (3.9) |
Mean minimum °F (°C) | −10.8 (−23.8) |
−6.9 (−21.6) |
5.0 (−15.0) |
22.5 (−5.3) |
35.4 (1.9) |
45.1 (7.3) |
52.0 (11.1) |
50.4 (10.2) |
39.4 (4.1) |
27.0 (−2.8) |
12.4 (−10.9) |
−3.1 (−19.5) |
−14.1 (−25.6) |
Record low °F (°C) | −29 (−34) |
−27 (−33) |
−15 (−26) |
7 (−14) |
25 (−4) |
32 (0) |
39 (4) |
34 (1) |
27 (−3) |
14 (−10) |
−4 (−20) |
−27 (−33) |
−29 (−34) |
Average precipitation inches (mm) | 2.4 (60) |
2.3 (58) |
2.6 (66) |
3.5 (88) |
3.8 (97) |
3.5 (88) |
3.3 (83) |
3.1 (80) |
2.9 (74) |
2.6 (66) |
2.6 (67) |
2.4 (62) |
35 (889) |
Average snowfall inches (cm) | 24.9 (63.3) |
22.7 (57.6) |
10.4 (26.5) |
2.1 (5.3) |
0.0 (0.0) |
0.0 (0.0) |
0.0 (0.0) |
0.0 (0.0) |
0.0 (0.0) |
0.2 (0.6) |
5.3 (13.4) |
20.4 (51.9) |
86 (218.6) |
Average precipitation days (≥ 0.1 mm) | 13.5 | 10.9 | 11.5 | 12.3 | 12.9 | 10.6 | 9.6 | 9.3 | 9.1 | 10.7 | 10.5 | 12.2 | 133.1 |
Average snowy days (≥ 0.1 cm) | 12.0 | 8.8 | 5.3 | 1.7 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.2 | 4.0 | 8.3 | 40.3 |
Average relative humidity (%) | 74.2 | 72.9 | 70.5 | 66.2 | 66.3 | 69.0 | 71.8 | 75.6 | 76.2 | 72.5 | 75.6 | 78.6 | 72.4 |
Mean monthly sunshine hours | 126.0 | 142.2 | 183.7 | 213.7 | 265.9 | 288.2 | 299.3 | 263.7 | 220.3 | 180.4 | 106.5 | 90.2 | 2,380.1 |
Percent possible sunshine | 43 | 48 | 50 | 53 | 59 | 63 | 65 | 62 | 59 | 52 | 36 | 32 | 53 |
Average ultraviolet index | 1 | 2 | 4 | 6 | 7 | 9 | 9 | 8 | 6 | 4 | 2 | 1 | 5 |
Source 1: NOAA (relative humidity and sun 1961−1990) [4] [24] [25] [5] | |||||||||||||
Source 2: Weather Atlas [26] |
Cleveland | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Climate data for Cleveland ( Cleveland Airport), 1991–2020 normals, [h] extremes 1871–present [i] | |||||||||||||
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Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Year |
Record high °F (°C) | 64 (18) |
68 (20) |
77 (25) |
86 (30) |
93 (34) |
104 (40) |
102 (39) |
102 (39) |
100 (38) |
91 (33) |
77 (25) |
68 (20) |
104 (40) |
Mean maximum °F (°C) | 49.8 (9.9) |
51.8 (11.0) |
65.5 (18.6) |
78.4 (25.8) |
86.7 (30.4) |
91.8 (33.2) |
92.7 (33.7) |
91.2 (32.9) |
88.9 (31.6) |
78.6 (25.9) |
63.5 (17.5) |
51.1 (10.6) |
93.9 (34.4) |
Mean daily maximum °F (°C) | 26.8 (−2.9) |
29.5 (−1.4) |
41.7 (5.4) |
58.3 (14.6) |
71.1 (21.7) |
79.9 (26.6) |
83.7 (28.7) |
82.0 (27.8) |
75.6 (24.2) |
61.9 (16.6) |
45.9 (7.7) |
31.5 (−0.3) |
57.3 (14.1) |
Daily mean °F (°C) | 20.1 (−6.6) |
22.1 (−5.5) |
33.4 (0.8) |
48.6 (9.2) |
61.2 (16.2) |
70.3 (21.3) |
74.5 (23.6) |
73.0 (22.8) |
66.4 (19.1) |
53.2 (11.8) |
38.7 (3.7) |
25.3 (−3.7) |
48.9 (9.4) |
Mean daily minimum °F (°C) | 13.3 (−10.4) |
14.7 (−9.6) |
25.3 (−3.7) |
39.0 (3.9) |
51.4 (10.8) |
61.2 (16.2) |
65.3 (18.5) |
63.9 (17.7) |
57.0 (13.9) |
44.8 (7.1) |
31.3 (−0.4) |
19.2 (−7.1) |
40.5 (4.7) |
Mean minimum °F (°C) | −7.8 (−22.1) |
−5.1 (−20.6) |
6.8 (−14.0) |
24.1 (−4.4) |
36.1 (2.3) |
45.9 (7.7) |
53.2 (11.8) |
51.6 (10.9) |
43.0 (6.1) |
30.4 (−0.9) |
15.4 (−9.2) |
4.5 (−15.3) |
−11 (−24) |
Record low °F (°C) | −29 (−34) |
−26 (−32) |
−11 (−24) |
9 (−13) |
25 (−4) |
30 (−1) |
41 (5) |
37 (3) |
32 (0) |
18 (−8) |
−6 (−21) |
−24 (−31) |
−29 (−34) |
Average precipitation inches (mm) | 3.0 (76) |
2.5 (63) |
3.1 (78) |
3.7 (95) |
3.8 (96) |
3.8 (97) |
3.7 (93) |
3.5 (90) |
3.9 (100) |
3.6 (91) |
3.4 (86) |
3.0 (76) |
41 (1,041) |
Average snowfall inches (cm) | 29 (74) |
23 (58) |
14 (36) |
3.1 (8) |
0.0 (0.0) |
0.0 (0.0) |
0.0 (0.0) |
0.0 (0.0) |
0.0 (0.0) |
0.1 (0.3) |
7.5 (19) |
27 (68) |
103.7 (263.3) |
Average precipitation days (≥ 0.2 mm) | 17.7 | 14.6 | 14.6 | 14.8 | 13.4 | 11.5 | 10.7 | 10.3 | 10.1 | 12.1 | 13.1 | 15.6 | 158.5 |
Average snowy days (≥ 0.2 cm) | 13.5 | 10.5 | 7.2 | 2.1 | 0.1 | 0.0 | 0.0 | 0.0 | 0.0 | 0.2 | 3.8 | 8.4 | 45.8 |
Average relative humidity (%) | 73.3 | 73.0 | 70.4 | 66.1 | 67.3 | 69.0 | 69.8 | 73.1 | 73.7 | 70.8 | 71.9 | 74.1 | 71.0 |
Mean monthly sunshine hours | 101.0 | 122.3 | 167.0 | 216.0 | 263.6 | 294.6 | 307.2 | 262.2 | 219.0 | 169.5 | 89.8 | 67.8 | 2,280 |
Percent possible sunshine | 34 | 41 | 45 | 54 | 59 | 65 | 67 | 61 | 59 | 49 | 30 | 24 | 51 |
Average ultraviolet index | 2 | 2 | 4 | 6 | 7 | 9 | 9 | 8 | 6 | 4 | 2 | 1 | 5 |
Source 1: NOAA (relative humidity and sun 1961–1990) [2] [28] [5] | |||||||||||||
Source 2: Weather Atlas [6] (sunshine data) |
Columbus | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Climate data for Columbus, Ohio ( John Glenn Int'l), 1991–2020 normals, [j] extremes 1878–present [k] | |||||||||||||
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Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Year |
Record high °F (°C) | 64 (18) |
70 (21) |
79 (26) |
88 (31) |
97 (36) |
102 (39) |
106 (41) |
102 (39) |
100 (38) |
91 (33) |
75 (24) |
66 (19) |
106 (41) |
Mean maximum °F (°C) | 51.6 (10.9) |
55.0 (12.8) |
68.2 (20.1) |
79.9 (26.6) |
88.3 (31.3) |
93.0 (33.9) |
93.7 (34.3) |
92.8 (33.8) |
90.1 (32.3) |
81.3 (27.4) |
65.1 (18.4) |
53.4 (11.9) |
95.0 (35.0) |
Mean daily maximum °F (°C) | 28.0 (−2.2) |
31.8 (−0.1) |
45.7 (7.6) |
62.2 (16.8) |
74.1 (23.4) |
82.2 (27.9) |
85.5 (29.7) |
84.0 (28.9) |
77.7 (25.4) |
63.7 (17.6) |
46.9 (8.3) |
32.5 (0.3) |
59.5 (15.3) |
Daily mean °F (°C) | 20.7 (−6.3) |
23.5 (−4.7) |
36.1 (2.3) |
51.4 (10.8) |
63.3 (17.4) |
72.0 (22.2) |
75.4 (24.1) |
73.9 (23.3) |
67.3 (19.6) |
53.4 (11.9) |
38.1 (3.4) |
25.5 (−3.6) |
50.1 (10.0) |
Mean daily minimum °F (°C) | 12.9 (−10.6) |
15.3 (−9.3) |
26.6 (−3.0) |
40.5 (4.7) |
52.3 (11.3) |
61.5 (16.4) |
65.5 (18.6) |
63.9 (17.7) |
56.5 (13.6) |
43.0 (6.1) |
29.7 (−1.3) |
18.3 (−7.6) |
40.5 (4.7) |
Mean minimum °F (°C) | −7.2 (−21.8) |
−2.7 (−19.3) |
9.1 (−12.7) |
25.3 (−3.7) |
37.8 (3.2) |
48.6 (9.2) |
55.8 (13.2) |
54.3 (12.4) |
43.2 (6.2) |
29.3 (−1.5) |
15.3 (−9.3) |
1.9 (−16.7) |
−9.9 (−23.3) |
Record low °F (°C) | −31 (−35) |
−29 (−34) |
−11 (−24) |
10 (−12) |
25 (−4) |
36 (2) |
43 (6) |
39 (4) |
30 (−1) |
16 (−9) |
−11 (−24) |
−26 (−32) |
−31 (−35) |
Average precipitation inches (mm) | 3.0 (76) |
2.4 (61) |
3.6 (92) |
3.9 (98) |
4.0 (101) |
4.3 (110) |
4.7 (119) |
3.7 (95) |
3.1 (80) |
2.9 (74) |
2.8 (71) |
3.1 (80) |
41.5 (1,057) |
Average snowfall inches (cm) | 22.2 (56.3) |
16.0 (40.6) |
6.7 (16.9) |
0.7 (1.8) |
0.0 (0.0) |
0.0 (0.0) |
0.0 (0.0) |
0.0 (0.0) |
0.0 (0.0) |
0.4 (0.9) |
3.9 (9.8) |
17.0 (43.3) |
66.9 (169.6) |
Average precipitation days (≥ 0.1 mm) | 14.7 | 11.8 | 12.5 | 13.7 | 14.0 | 11.7 | 10.9 | 9.5 | 8.7 | 10.0 | 10.5 | 12.7 | 140.7 |
Average snowy days (≥ 0.1 cm) | 12.0 | 6.7 | 4.0 | 1.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.2 | 2.3 | 7.6 | 33.8 |
Average relative humidity (%) | 71.4 | 69.5 | 64.5 | 62.5 | 66.5 | 68.5 | 70.6 | 72.8 | 72.8 | 69.3 | 71.8 | 74.1 | 69.5 |
Average dew point °F (°C) | 9.1 (−12.7) |
11.5 (−11.4) |
23.2 (−4.9) |
35.6 (2.0) |
48.9 (9.4) |
58.3 (14.6) |
62.8 (17.1) |
61.7 (16.5) |
55.2 (12.9) |
40.8 (4.9) |
28.2 (−2.1) |
15.3 (−9.3) |
37.6 (3.1) |
Mean monthly sunshine hours | 110.6 | 126.3 | 162.0 | 201.8 | 243.4 | 258.1 | 260.9 | 235.9 | 212.0 | 183.1 | 104.2 | 84.3 | 2,182.6 |
Percent possible sunshine | 37 | 42 | 44 | 51 | 55 | 57 | 57 | 56 | 57 | 53 | 35 | 29 | 49 |
Average ultraviolet index | 2 | 3 | 4 | 6 | 8 | 9 | 9 | 8 | 6 | 4 | 2 | 1 | 5 |
Source: NOAA (sun, relative humidity, and dew point 1961–1990) [30] [2] [31] [22] and Weather Atlas [6] |
Indianapolis | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Climate data for Indianapolis ( Indianapolis International Airport), 1991–2020 normals, [l] extremes 1871–present [m] | |||||||||||||
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Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Year |
Record high °F (°C) | 63 (17) |
68 (20) |
79 (26) |
88 (31) |
97 (36) |
104 (40) |
106 (41) |
102 (39) |
100 (38) |
90 (32) |
75 (24) |
64 (18) |
106 (41) |
Mean maximum °F (°C) | 49.8 (9.9) |
55.4 (13.0) |
68.5 (20.3) |
79.0 (26.1) |
87.1 (30.6) |
91.9 (33.3) |
93.4 (34.1) |
92.7 (33.7) |
90.7 (32.6) |
81.0 (27.2) |
65.1 (18.4) |
52.7 (11.5) |
94.8 (34.9) |
Mean daily maximum °F (°C) | 27.1 (−2.7) |
31.8 (−0.1) |
46.6 (8.1) |
62.1 (16.7) |
73.4 (23.0) |
82.0 (27.8) |
85.3 (29.6) |
84.4 (29.1) |
78.3 (25.7) |
63.9 (17.7) |
46.4 (8.0) |
31.5 (−0.3) |
59.4 (15.2) |
Daily mean °F (°C) | 19.6 (−6.9) |
23.5 (−4.7) |
37.0 (2.8) |
51.8 (11.0) |
63.7 (17.6) |
72.5 (22.5) |
75.7 (24.3) |
74.7 (23.7) |
67.8 (19.9) |
53.8 (12.1) |
37.9 (3.3) |
24.3 (−4.3) |
50.2 (10.1) |
Mean daily minimum °F (°C) | 11.8 (−11.2) |
15.3 (−9.3) |
27.7 (−2.4) |
41.5 (5.3) |
53.8 (12.1) |
63.0 (17.2) |
66.4 (19.1) |
64.9 (18.3) |
57.4 (14.1) |
43.7 (6.5) |
29.5 (−1.4) |
17.2 (−8.2) |
41.0 (5.0) |
Mean minimum °F (°C) | −11.0 (−23.9) |
−4.2 (−20.1) |
9.5 (−12.5) |
25.3 (−3.7) |
37.8 (3.2) |
49.3 (9.6) |
56.1 (13.4) |
55.0 (12.8) |
43.2 (6.2) |
28.4 (−2.0) |
14.2 (−9.9) |
−2.2 (−19.0) |
−13.9 (−25.5) |
Record low °F (°C) | −36 (−38) |
−29 (−34) |
−13 (−25) |
16 (−9) |
27 (−3) |
37 (3) |
46 (8) |
41 (5) |
30 (−1) |
18 (−8) |
−11 (−24) |
−33 (−36) |
−36 (−38) |
Average precipitation inches (mm) | 3.1 (79) |
2.4 (62) |
3.7 (94) |
4.3 (110) |
4.8 (121) |
5.0 (126) |
4.4 (112) |
3.2 (81) |
3.1 (80) |
3.2 (82) |
3.5 (88) |
2.9 (74) |
43.6 (1,109) |
Average snowfall inches (cm) | 28 (72) |
18 (45) |
5.9 (15) |
0.8 (2) |
0.0 (0.0) |
0.0 (0.0) |
0.0 (0.0) |
0.0 (0.0) |
0.0 (0.0) |
0.0 (0.0) |
2.8 (7) |
22 (56) |
77.5 (197) |
Average extreme snow depth inches (cm) | 12 (31) |
15 (37) |
4.7 (12) |
0.4 (1) |
0 (0) |
0 (0) |
0 (0) |
0 (0) |
0 (0) |
0 (0) |
1.2 (3) |
6.7 (17) |
17 (43) |
Average precipitation days (≥ 0.2 mm) | 12.3 | 10.3 | 11.5 | 11.9 | 13.3 | 11.5 | 10.3 | 8.3 | 7.9 | 8.9 | 10.2 | 11.8 | 128.2 |
Average snowy days (≥ 0.2 cm) | 10.0 | 6.8 | 3.4 | 0.5 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.2 | 2.2 | 7.6 | 30.7 |
Average relative humidity (%) | 75.0 | 73.6 | 69.9 | 65.6 | 67.1 | 68.4 | 72.4 | 75.4 | 74.4 | 71.6 | 75.5 | 78.0 | 72.2 |
Average dew point °F (°C) | 9.1 (−12.7) |
12.6 (−10.8) |
25.5 (−3.6) |
37.9 (3.3) |
50.5 (10.3) |
59.9 (15.5) |
64.9 (18.3) |
63.7 (17.6) |
56.7 (13.7) |
42.3 (5.7) |
29.5 (−1.4) |
15.4 (−9.2) |
39.0 (3.9) |
Mean monthly sunshine hours | 132.1 | 145.7 | 178.3 | 214.8 | 264.7 | 287.2 | 295.2 | 273.7 | 232.6 | 196.6 | 117.1 | 102.4 | 2,440.4 |
Percent possible sunshine | 44 | 49 | 48 | 54 | 59 | 64 | 65 | 64 | 62 | 57 | 39 | 35 | 53 |
Source: NOAA (relative humidity, dew point, and sun 1961–1990) [33] [34] [35] |
St. Louis | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Climate data for St. Louis, Missouri ( Lambert–St. Louis Int'l), 1991−2020 normals, [n] extremes 1874−present [o] | |||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Year |
Record high °F (°C) | 68 (20) |
75 (24) |
86 (30) |
91 (33) |
99 (37) |
108 (42) |
115 (46) |
109 (43) |
104 (40) |
91 (33) |
81 (27) |
66 (19) |
115 (46) |
Mean maximum °F (°C) | 55.8 (13.2) |
62.1 (16.7) |
73.9 (23.3) |
84.6 (29.2) |
90.3 (32.4) |
95.5 (35.3) |
99.1 (37.3) |
99.1 (37.3) |
92.5 (33.6) |
85.3 (29.6) |
70.2 (21.2) |
57.9 (14.4) |
100.8 (38.2) |
Mean daily maximum °F (°C) | 31.5 (−0.3) |
36.9 (2.7) |
51.3 (10.7) |
66.2 (19.0) |
77.2 (25.1) |
85.8 (29.9) |
89.6 (32.0) |
88.3 (31.3) |
81.1 (27.3) |
67.5 (19.7) |
50.2 (10.1) |
35.4 (1.9) |
63.4 (17.5) |
Daily mean °F (°C) | 23.2 (−4.9) |
27.7 (−2.4) |
41.2 (5.1) |
55.8 (13.2) |
67.5 (19.7) |
76.5 (24.7) |
80.4 (26.9) |
78.8 (26.0) |
71.1 (21.7) |
57.4 (14.1) |
41.2 (5.1) |
27.5 (−2.5) |
54.0 (12.2) |
Mean daily minimum °F (°C) | 14.7 (−9.6) |
18.7 (−7.4) |
31.3 (−0.4) |
45.1 (7.3) |
57.9 (14.4) |
67.3 (19.6) |
71.1 (21.7) |
69.3 (20.7) |
61.0 (16.1) |
47.3 (8.5) |
32.0 (0.0) |
19.6 (−6.9) |
44.6 (7.0) |
Mean minimum °F (°C) | −4.5 (−20.3) |
0.7 (−17.4) |
12.4 (−10.9) |
30.4 (−0.9) |
43.5 (6.4) |
55.6 (13.1) |
61.3 (16.3) |
60.1 (15.6) |
47.1 (8.4) |
31.8 (−0.1) |
16.5 (−8.6) |
1.9 (−16.7) |
−7.8 (−22.1) |
Record low °F (°C) | −31 (−35) |
−27 (−33) |
−11 (−24) |
18 (−8) |
30 (−1) |
43 (6) |
52 (11) |
46 (8) |
32 (0) |
19 (−7) |
−4 (−20) |
−26 (−32) |
−31 (−35) |
Average precipitation inches (mm) | 2.6 (66) |
2.1 (54) |
3.5 (89) |
4.7 (120) |
4.8 (122) |
4.5 (114) |
3.9 (100) |
3.4 (86) |
3.0 (75) |
3.1 (80) |
3.4 (87) |
2.5 (64) |
41.5 (1,057) |
Average snowfall inches (cm) | 20 (50) |
13 (33) |
3.5 (8.8) |
0.3 (0.7) |
0.0 (0.0) |
0.0 (0.0) |
0.0 (0.0) |
0.0 (0.0) |
0.0 (0.0) |
0.1 (0.2) |
2.1 (5.3) |
17 (42) |
56 (140) |
Average precipitation days (≥ 0.2 mm) | 9.3 | 8.7 | 10.8 | 11.5 | 12.6 | 9.8 | 8.9 | 8.4 | 7.3 | 8.5 | 9.0 | 9.0 | 113.8 |
Average snowy days (≥ 0.2 cm) | 7.0 | 5.6 | 2.7 | 0.4 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.2 | 1.4 | 6.2 | 14.5 |
Average relative humidity (%) | 73.0 | 72.0 | 68.3 | 63.5 | 66.5 | 67.1 | 68.0 | 70.0 | 71.6 | 68.7 | 72.2 | 75.8 | 69.7 |
Average dew point °F (°C) | 11.1 (−11.6) |
15.1 (−9.4) |
27.7 (−2.4) |
40.5 (4.7) |
52.9 (11.6) |
62.1 (16.7) |
66.6 (19.2) |
65.1 (18.4) |
58.6 (14.8) |
44.2 (6.8) |
30.6 (−0.8) |
16.5 (−8.6) |
40.9 (5.0) |
Mean monthly sunshine hours | 161.2 | 158.3 | 198.3 | 223.5 | 266.5 | 291.9 | 308.9 | 269.8 | 236.1 | 208.4 | 140.9 | 129.9 | 2,593.7 |
Percent possible sunshine | 53 | 53 | 53 | 56 | 60 | 66 | 68 | 64 | 63 | 60 | 47 | 44 | 58 |
Source: NOAA (relative humidity and sun 1961−1990) [38] [39] [40] |
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Milwaukee | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Climate data for Milwaukee ( Mitchell International Airport), 1991–2020 normals, [A] extremes 1871–present [B] | |||||||||||||
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Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Year |
Record high °F (°C) | 54 (12) |
63 (17) |
79 (26) |
90 (32) |
95 (35) |
104 (40) |
106 (41) |
102 (39) |
99 (37) |
88 (31) |
72 (22) |
59 (15) |
106 (41) |
Mean maximum °F (°C) | 41.5 (5.3) |
43.9 (6.6) |
61.7 (16.5) |
77.7 (25.4) |
85.8 (29.9) |
91.9 (33.3) |
93.4 (34.1) |
91.8 (33.2) |
88.2 (31.2) |
78.1 (25.6) |
60.1 (15.6) |
44.4 (6.9) |
95.0 (35.0) |
Mean daily maximum °F (°C) | 21.9 (−5.6) |
25.2 (−3.8) |
38.8 (3.8) |
52.9 (11.6) |
66.6 (19.2) |
76.8 (24.9) |
81.9 (27.7) |
80.2 (26.8) |
73.6 (23.1) |
59.5 (15.3) |
42.4 (5.8) |
27.1 (−2.7) |
53.9 (12.2) |
Daily mean °F (°C) | 15.1 (−9.4) |
18.1 (−7.7) |
30.9 (−0.6) |
44.4 (6.9) |
57.0 (13.9) |
67.6 (19.8) |
73.2 (22.9) |
72.3 (22.4) |
64.9 (18.3) |
51.3 (10.7) |
35.1 (1.7) |
20.5 (−6.4) |
45.9 (7.7) |
Mean daily minimum °F (°C) | 8.2 (−13.2) |
10.9 (−11.7) |
23.4 (−4.8) |
36.0 (2.2) |
47.8 (8.8) |
58.5 (14.7) |
64.8 (18.2) |
64.2 (17.9) |
56.5 (13.6) |
43.0 (6.1) |
27.7 (−2.4) |
14.0 (−10.0) |
37.9 (3.3) |
Mean minimum °F (°C) | −13.5 (−25.3) |
−8.0 (−22.2) |
5.2 (−14.9) |
23.7 (−4.6) |
36.3 (2.4) |
45.7 (7.6) |
54.7 (12.6) |
55.0 (12.8) |
42.3 (5.7) |
28.8 (−1.8) |
12.6 (−10.8) |
−5.8 (−21.0) |
−17.0 (−27.2) |
Record low °F (°C) | −35 (−37) |
−35 (−37) |
−15 (−26) |
10 (−12) |
21 (−6) |
34 (1) |
39 (4) |
43 (6) |
28 (−2) |
14 (−10) |
−20 (−29) |
−31 (−35) |
−35 (−37) |
Average precipitation inches (mm) | 1.8 (45) |
1.7 (43) |
2.2 (56) |
3.9 (98) |
3.5 (90) |
4.4 (111) |
3.4 (86) |
3.7 (93) |
3.1 (80) |
2.8 (71) |
2.2 (57) |
1.9 (48) |
34.6 (878) |
Average snowfall inches (cm) | 20 (50) |
18 (46) |
11 (27) |
3.7 (9.3) |
0.0 (0.0) |
0.0 (0.0) |
0.0 (0.0) |
0.0 (0.0) |
0.0 (0.0) |
0.7 (1.8) |
7.5 (19) |
19 (47) |
79.9 (200.1) |
Average precipitation days (≥ 0.2 mm) | 11.4 | 10.0 | 10.7 | 12.2 | 11.7 | 11.1 | 9.5 | 9.5 | 8.6 | 10.3 | 10.2 | 10.3 | 125.5 |
Average snowy days (≥ 0.2 cm) | 11.0 | 9.1 | 6.0 | 1.8 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.6 | 4.2 | 9.3 | 35.1 |
Average relative humidity (%) | 72.3 | 71.9 | 71.4 | 68.5 | 68.5 | 69.7 | 71.5 | 74.9 | 75.4 | 72.5 | 74.5 | 75.9 | 72.3 |
Average dew point °F (°C) | 2.7 (−16.3) |
6.4 (−14.2) |
19.2 (−7.1) |
31.8 (−0.1) |
43.7 (6.5) |
54.3 (12.4) |
60.6 (15.9) |
60.4 (15.8) |
53.4 (11.9) |
39.6 (4.2) |
25.0 (−3.9) |
9.3 (−12.6) |
33.9 (1.0) |
Mean monthly sunshine hours | 140.2 | 151.5 | 185.4 | 213.5 | 275.5 | 304.5 | 321.1 | 281.2 | 215.1 | 178.0 | 112.8 | 104.8 | 2,483.6 |
Percent possible sunshine | 48 | 51 | 50 | 53 | 61 | 66 | 69 | 65 | 57 | 52 | 38 | 37 | 56 |
Average ultraviolet index | 1 | 2 | 4 | 5 | 7 | 8 | 8 | 8 | 6 | 3 | 2 | 1 | 5 |
Source 1: NOAA (relative humidity, dew point, and sun 1961–1990) [2] [3] [4] [5] | |||||||||||||
Source 2: Weather Atlas [6] |
Grand Rapids | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Climate data for Grand Rapids, Michigan ( Gerald Ford Int'l), 1991–2020 normals, extremes 1892−present [a] | |||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Year |
Record high °F (°C) | 59 (15) |
61 (16) |
82 (28) |
88 (31) |
95 (35) |
102 (39) |
108 (42) |
102 (39) |
99 (37) |
88 (31) |
75 (24) |
61 (16) |
108 (42) |
Mean maximum °F (°C) | 42.3 (5.7) |
43.0 (6.1) |
62.4 (16.9) |
77.4 (25.2) |
86.0 (30.0) |
91.8 (33.2) |
92.5 (33.6) |
91.0 (32.8) |
87.8 (31.0) |
77.0 (25.0) |
59.9 (15.5) |
45.3 (7.4) |
94.3 (34.6) |
Mean daily maximum °F (°C) | 21.9 (−5.6) |
24.6 (−4.1) |
39.0 (3.9) |
55.9 (13.3) |
69.8 (21.0) |
79.3 (26.3) |
83.1 (28.4) |
81.0 (27.2) |
73.9 (23.3) |
58.8 (14.9) |
41.7 (5.4) |
27.1 (−2.7) |
54.7 (12.6) |
Daily mean °F (°C) | 15.8 (−9.0) |
17.6 (−8.0) |
30.4 (−0.9) |
45.9 (7.7) |
59.2 (15.1) |
68.9 (20.5) |
72.9 (22.7) |
71.1 (21.7) |
63.5 (17.5) |
49.6 (9.8) |
34.5 (1.4) |
21.4 (−5.9) |
45.9 (7.7) |
Mean daily minimum °F (°C) | 9.7 (−12.4) |
10.6 (−11.9) |
21.6 (−5.8) |
35.4 (1.9) |
48.6 (9.2) |
58.3 (14.6) |
62.4 (16.9) |
61.2 (16.2) |
53.1 (11.7) |
40.5 (4.7) |
27.3 (−2.6) |
15.6 (−9.1) |
37.0 (2.8) |
Mean minimum °F (°C) | −11.7 (−24.3) |
−9.0 (−22.8) |
2.1 (−16.6) |
21.0 (−6.1) |
33.4 (0.8) |
44.1 (6.7) |
51.1 (10.6) |
49.3 (9.6) |
38.7 (3.7) |
26.8 (−2.9) |
13.5 (−10.3) |
−2.7 (−19.3) |
−15.3 (−26.3) |
Record low °F (°C) | −31 (−35) |
−33 (−36) |
−18 (−28) |
1 (−17) |
21 (−6) |
32 (0) |
41 (5) |
39 (4) |
27 (−3) |
16 (−9) |
−15 (−26) |
−27 (−33) |
−33 (−36) |
Average precipitation inches (mm) | 2.5 (64) |
2.1 (54) |
2.4 (61) |
4.0 (101) |
4.0 (102) |
3.9 (100) |
3.9 (98) |
3.5 (90) |
3.4 (87) |
4.0 (102) |
3.1 (79) |
2.5 (63) |
39.3 (1,001) |
Average snowfall inches (cm) | 27 (68) |
22 (56) |
15 (39) |
3.2 (8.1) |
0.0 (0.0) |
0.0 (0.0) |
0.0 (0.0) |
0.0 (0.0) |
0.0 (0.0) |
0.5 (1.3) |
11 (28) |
25 (63) |
103.7 (263.4) |
Average extreme snow depth inches (cm) | 21 (54) |
27 (68) |
26 (65) |
3.5 (9) |
0 (0) |
0 (0) |
0 (0) |
0 (0) |
0 (0) |
0 (0) |
5.5 (14) |
14 (35) |
30 (75) |
Average precipitation days (≥ 0.2 mm) | 16.8 | 13.1 | 11.8 | 12.8 | 12.5 | 10.7 | 10.0 | 9.9 | 10.2 | 12.5 | 12.9 | 15.5 | 148.7 |
Average snowy days (≥ 0.2 cm) | 15.9 | 11.5 | 7.9 | 2.8 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.7 | 5.5 | 13.9 | 50.9 |
Average relative humidity (%) | 77.2 | 74.2 | 71.1 | 66.8 | 65.4 | 68.1 | 69.6 | 73.3 | 76.1 | 74.6 | 76.9 | 79.5 | 72.7 |
Mean monthly sunshine hours | 88.3 | 116.0 | 168.2 | 210.2 | 255.9 | 286.8 | 296.5 | 264.2 | 206.0 | 152.4 | 82.0 | 62.1 | 2,188.6 |
Percent possible sunshine | 30 | 39 | 45 | 52 | 56 | 62 | 64 | 61 | 55 | 45 | 28 | 22 | 49 |
Source: NOAA (relative humidity and sun 1961−1990) [9] [10] [11] |
Detroit | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Climate data for Detroit ( DTW), 1991–2020 normals, extremes 1874-present | |||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Year |
Record high °F (°C) | 57 (14) |
61 (16) |
81 (27) |
88 (31) |
95 (35) |
104 (40) |
106 (41) |
104 (40) |
100 (38) |
90 (32) |
72 (22) |
61 (16) |
106 (41) |
Mean maximum °F (°C) | 44.1 (6.7) |
46.2 (7.9) |
63.9 (17.7) |
77.7 (25.4) |
87.3 (30.7) |
92.7 (33.7) |
93.7 (34.3) |
92.1 (33.4) |
89.2 (31.8) |
78.8 (26.0) |
61.3 (16.3) |
47.1 (8.4) |
95.4 (35.2) |
Mean daily maximum °F (°C) | 23.4 (−4.8) |
26.2 (−3.2) |
40.5 (4.7) |
56.8 (13.8) |
70.3 (21.3) |
79.7 (26.5) |
83.7 (28.7) |
81.3 (27.4) |
74.5 (23.6) |
60.3 (15.7) |
43.2 (6.2) |
28.2 (−2.1) |
55.7 (13.2) |
Daily mean °F (°C) | 16.9 (−8.4) |
19.0 (−7.2) |
31.8 (−0.1) |
47.1 (8.4) |
60.3 (15.7) |
70.0 (21.1) |
74.1 (23.4) |
72.3 (22.4) |
64.9 (18.3) |
51.3 (10.7) |
35.8 (2.1) |
22.3 (−5.4) |
47.2 (8.4) |
Mean daily minimum °F (°C) | 10.2 (−12.1) |
11.8 (−11.2) |
23.2 (−4.9) |
37.2 (2.9) |
50.2 (10.1) |
60.3 (15.7) |
64.4 (18.0) |
63.1 (17.3) |
55.6 (13.1) |
42.3 (5.7) |
28.6 (−1.9) |
16.3 (−8.7) |
38.6 (3.7) |
Mean minimum °F (°C) | −8.9 (−22.7) |
−5.4 (−20.8) |
6.6 (−14.1) |
23.7 (−4.6) |
36.3 (2.4) |
47.3 (8.5) |
54.1 (12.3) |
53.4 (11.9) |
41.5 (5.3) |
29.1 (−1.6) |
14.4 (−9.8) |
−0.2 (−17.9) |
−12.6 (−24.8) |
Record low °F (°C) | −29 (−34) |
−29 (−34) |
−9 (−23) |
7 (−14) |
25 (−4) |
36 (2) |
43 (6) |
37 (3) |
28 (−2) |
16 (−9) |
−6 (−21) |
−20 (−29) |
−29 (−34) |
Average precipitation inches (mm) | 2.2 (57) |
2.1 (53) |
2.4 (62) |
3.3 (83) |
3.7 (94) |
3.3 (83) |
3.5 (89) |
3.3 (83) |
3.2 (82) |
2.5 (64) |
2.6 (65) |
2.2 (57) |
34.3 (872) |
Average snowfall inches (cm) | 22 (56) |
20 (52) |
10 (26) |
2.4 (6) |
0.0 (0.0) |
0.0 (0.0) |
0.0 (0.0) |
0.0 (0.0) |
0.0 (0.0) |
0.0 (0.0) |
5.1 (13) |
17 (43) |
76.5 (196) |
Average extreme snow depth inches (cm) | 15 (37) |
20 (50) |
19 (47) |
0.8 (2) |
0 (0) |
0 (0) |
0 (0) |
0 (0) |
0 (0) |
0 (0) |
1.2 (3) |
7.1 (18) |
20 (52) |
Average precipitation days (≥ 0.2 mm) | 13.4 | 11.0 | 11.1 | 12.5 | 12.9 | 10.7 | 10.5 | 9.7 | 9.5 | 10.6 | 11.0 | 13.1 | 136 |
Average snowy days (≥ 0.2 cm) | 11.7 | 10.2 | 6.3 | 1.5 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.3 | 3.6 | 10.0 | 43.6 |
Average relative humidity (%) | 74.7 | 72.5 | 70.0 | 66.0 | 65.3 | 67.3 | 68.5 | 71.5 | 73.4 | 71.6 | 74.6 | 76.7 | 71.0 |
Average dew point °F (°C) | 7.2 (−13.8) |
8.6 (−13.0) |
20.5 (−6.4) |
33.3 (0.7) |
45.7 (7.6) |
55.6 (13.1) |
60.4 (15.8) |
59.7 (15.4) |
53.2 (11.8) |
39.6 (4.2) |
27.0 (−2.8) |
12.9 (−10.6) |
35.3 (1.8) |
Mean monthly sunshine hours | 119.9 | 138.3 | 184.9 | 217.0 | 275.9 | 301.8 | 317.0 | 283.5 | 227.6 | 176.0 | 106.3 | 87.7 | 2,435.9 |
Percent possible sunshine | 41 | 47 | 50 | 54 | 61 | 66 | 69 | 66 | 61 | 51 | 36 | 31 | 55 |
[ citation needed] |
Chicago, Illinois | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Climate data for Chicago (O'Hare Int'l Airport), 1991–2020 normals, [b] extremes 1871–present [c] | |||||||||||||
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Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Year |
Record high °F (°C) | 57 (14) |
66 (19) |
82 (28) |
90 (32) |
99 (37) |
104 (40) |
106 (41) |
102 (39) |
100 (38) |
88 (31) |
75 (24) |
63 (17) |
106 (41) |
Mean maximum °F (°C) | 43.3 (6.3) |
48.0 (8.9) |
65.7 (18.7) |
79.2 (26.2) |
88.0 (31.1) |
93.0 (33.9) |
94.8 (34.9) |
93.2 (34.0) |
89.8 (32.1) |
76.3 (24.6) |
61.5 (16.4) |
47.5 (8.6) |
96.1 (35.6) |
Mean daily maximum °F (°C) | 22.6 (−5.2) |
26.8 (−2.9) |
41.5 (5.3) |
57.2 (14.0) |
70.5 (21.4) |
80.4 (26.9) |
84.6 (29.2) |
82.6 (28.1) |
75.6 (24.2) |
61.0 (16.1) |
43.0 (6.1) |
27.7 (−2.4) |
56.1 (13.4) |
Daily mean °F (°C) | 16.2 (−8.8) |
19.8 (−6.8) |
33.6 (0.9) |
47.8 (8.8) |
60.6 (15.9) |
70.5 (21.4) |
75.4 (24.1) |
73.8 (23.2) |
66.4 (19.1) |
52.2 (11.2) |
36.0 (2.2) |
21.6 (−5.8) |
47.8 (8.8) |
Mean daily minimum °F (°C) | 9.9 (−12.3) |
12.7 (−10.7) |
25.5 (−3.6) |
38.5 (3.6) |
50.5 (10.3) |
60.8 (16.0) |
66.4 (19.1) |
65.1 (18.4) |
57.0 (13.9) |
43.5 (6.4) |
28.8 (−1.8) |
15.4 (−9.2) |
39.5 (4.2) |
Mean minimum °F (°C) | −13.5 (−25.3) |
−8.5 (−22.5) |
6.4 (−14.2) |
23.7 (−4.6) |
36.7 (2.6) |
46.0 (7.8) |
54.5 (12.5) |
54.3 (12.4) |
41.7 (5.4) |
27.9 (−2.3) |
11.8 (−11.2) |
−5.8 (−21.0) |
−17.5 (−27.5) |
Record low °F (°C) | −36 (−38) |
−29 (−34) |
−17 (−27) |
5 (−15) |
27 (−3) |
36 (2) |
45 (7) |
43 (6) |
28 (−2) |
12 (−11) |
−8 (−22) |
−35 (−37) |
−36 (−38) |
Average precipitation inches (mm) | 2.0 (51) |
2.0 (50) |
2.4 (62) |
3.7 (95) |
4.5 (114) |
4.1 (104) |
3.7 (94) |
4.3 (108) |
3.2 (81) |
3.4 (87) |
2.4 (61) |
2.1 (54) |
37.8 (961) |
Average snowfall inches (cm) | 18.4 (46.8) |
18.0 (45.7) |
9.6 (24.5) |
1.0 (2.5) |
0.0 (0.0) |
0.0 (0.0) |
0.0 (0.0) |
0.0 (0.0) |
0.0 (0.0) |
0.1 (0.3) |
5.0 (12.8) |
18.9 (48.1) |
71 (180.7) |
Average precipitation days (≥ 0.2 mm) | 11.0 | 9.4 | 10.8 | 12.3 | 12.5 | 11.1 | 9.7 | 9.4 | 8.5 | 10.5 | 10.0 | 10.6 | 127.0 |
Average snowy days (≥ 0.2 cm) | 10.6 | 8.8 | 4.5 | 1.2 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.3 | 3.5 | 8.8 | 37.7 |
Average relative humidity (%) | 72.2 | 71.6 | 69.7 | 64.9 | 64.1 | 65.6 | 68.5 | 70.7 | 71.1 | 68.6 | 72.5 | 75.5 | 69.6 |
Average dew point °F (°C) | 4.6 (−15.2) |
8.6 (−13.0) |
21.7 (−5.7) |
34.0 (1.1) |
45.7 (7.6) |
55.8 (13.2) |
61.7 (16.5) |
61.0 (16.1) |
53.8 (12.1) |
39.9 (4.4) |
26.2 (−3.2) |
11.1 (−11.6) |
35.3 (1.9) |
Mean monthly sunshine hours | 135.8 | 136.2 | 187.0 | 215.3 | 281.9 | 311.4 | 318.4 | 283.0 | 226.6 | 193.2 | 113.3 | 106.3 | 2,508.4 |
Percent possible sunshine | 46 | 46 | 51 | 54 | 62 | 68 | 69 | 66 | 60 | 56 | 38 | 37 | 56 |
Average ultraviolet index | 1 | 2 | 4 | 6 | 7 | 9 | 9 | 8 | 6 | 4 | 2 | 1 | 5 |
Source: NOAA (relative humidity, dew point and sun 1961–1990) [2] [16] [17] |
Omaha | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Climate data for Omaha ( Eppley Airfield), 1991–2020 normals [d], extremes 1871–present [e] | |||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Year |
Record high °F (°C) | 61 (16) |
70 (21) |
86 (30) |
95 (35) |
102 (39) |
108 (42) |
115 (46) |
111 (44) |
104 (40) |
95 (35) |
77 (25) |
64 (18) |
115 (46) |
Mean maximum °F (°C) | 47.1 (8.4) |
52.5 (11.4) |
71.4 (21.9) |
84.6 (29.2) |
91.2 (32.9) |
95.9 (35.5) |
98.4 (36.9) |
96.8 (36.0) |
93.0 (33.9) |
83.5 (28.6) |
65.8 (18.8) |
49.3 (9.6) |
99.9 (37.7) |
Mean daily maximum °F (°C) | 24.6 (−4.1) |
29.7 (−1.3) |
46.8 (8.2) |
62.2 (16.8) |
74.7 (23.7) |
84.4 (29.1) |
88.2 (31.2) |
85.8 (29.9) |
79.2 (26.2) |
63.7 (17.6) |
45.0 (7.2) |
28.8 (−1.8) |
59.4 (15.2) |
Daily mean °F (°C) | 15.4 (−9.2) |
19.9 (−6.7) |
35.6 (2.0) |
50.7 (10.4) |
63.7 (17.6) |
73.9 (23.3) |
78.1 (25.6) |
75.7 (24.3) |
67.6 (19.8) |
52.5 (11.4) |
34.9 (1.6) |
19.8 (−6.8) |
49.0 (9.4) |
Mean daily minimum °F (°C) | 6.3 (−14.3) |
10.2 (−12.1) |
24.6 (−4.1) |
39.4 (4.1) |
52.7 (11.5) |
63.3 (17.4) |
68.0 (20.0) |
65.7 (18.7) |
56.1 (13.4) |
41.4 (5.2) |
24.8 (−4.0) |
10.8 (−11.8) |
38.6 (3.7) |
Mean minimum °F (°C) | −17 (−27) |
−11.0 (−23.9) |
3.4 (−15.9) |
22.3 (−5.4) |
37.0 (2.8) |
49.8 (9.9) |
55.8 (13.2) |
53.6 (12.0) |
39.4 (4.1) |
23.9 (−4.5) |
7.5 (−13.6) |
−9.8 (−23.2) |
−19.7 (−28.7) |
Record low °F (°C) | −42 (−41) |
−35 (−37) |
−22 (−30) |
3 (−16) |
25 (−4) |
39 (4) |
45 (7) |
43 (6) |
28 (−2) |
7 (−14) |
−20 (−29) |
−35 (−37) |
−42 (−41) |
Average precipitation inches (mm) | 0.7 (19) |
0.9 (24) |
1.8 (45) |
3.2 (81) |
4.6 (118) |
4.4 (113) |
3.5 (90) |
4.6 (117) |
3.0 (75) |
2.3 (59) |
1.5 (37) |
1.2 (31) |
31.7 (809) |
Average snowfall inches (cm) | 9.4 (24) |
9.8 (25) |
5.1 (13) |
1.6 (4) |
0.0 (0.0) |
0.0 (0.0) |
0.0 (0.0) |
0.0 (0.0) |
0.0 (0.0) |
0.4 (1) |
3.9 (10) |
13 (34) |
43.2 (111) |
Average precipitation days (≥ 0.2 mm) | 6.9 | 7.3 | 8.0 | 10.5 | 12.8 | 11.0 | 9.9 | 8.9 | 7.8 | 7.2 | 6.0 | 6.8 | 103.1 |
Average snowy days (≥ 0.2 cm) | 6.6 | 6.0 | 3.4 | 1.1 | 0.1 | 0.0 | 0.0 | 0.0 | 0.0 | 0.6 | 2.2 | 5.8 | 25.8 |
Average relative humidity (%) | 71.1 | 71.1 | 66.3 | 60.6 | 63.8 | 65.8 | 68.3 | 70.9 | 71.8 | 67.4 | 71.1 | 73.8 | 68.5 |
Mean monthly sunshine hours | 167.8 | 157.6 | 206.4 | 230.1 | 277.1 | 314.0 | 332.5 | 296.3 | 245.5 | 217.5 | 148.0 | 134.1 | 2,726.9 |
Percent possible sunshine | 56 | 53 | 56 | 58 | 62 | 69 | 72 | 69 | 66 | 63 | 50 | 47 | 61 |
Average ultraviolet index | 2 | 2 | 4 | 6 | 8 | 9 | 9 | 8 | 6 | 4 | 2 | 1 | 5 |
Source: NOAA (relative humidity 1961–1990 at Eppley Airfield, sun 1961–1990 at former Omaha NWS weather forecast office at 41°21′13″N 96°01′24″W / 41.3536°N 96.0233°W) [20] [2] [21] [22] |
Toledo | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Climate data for Toledo, Ohio ( Toledo Express Airport), 1991−2020 normals, [f] extremes 1871−present [g] | |||||||||||||
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Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Year |
Record high °F (°C) | 63 (17) |
63 (17) |
79 (26) |
88 (31) |
99 (37) |
104 (40) |
106 (41) |
102 (39) |
100 (38) |
90 (32) |
75 (24) |
64 (18) |
106 (41) |
Mean maximum °F (°C) | 45.9 (7.7) |
48.7 (9.3) |
64.9 (18.3) |
78.4 (25.8) |
88.7 (31.5) |
94.5 (34.7) |
94.3 (34.6) |
92.5 (33.6) |
90.3 (32.4) |
80.4 (26.9) |
62.8 (17.1) |
48.7 (9.3) |
96.3 (35.7) |
Mean daily maximum °F (°C) | 25.7 (−3.5) |
28.8 (−1.8) |
43.0 (6.1) |
59.7 (15.4) |
73.2 (22.9) |
82.8 (28.2) |
86.5 (30.3) |
84.0 (28.9) |
77.7 (25.4) |
63.1 (17.3) |
45.7 (7.6) |
30.4 (−0.9) |
58.4 (14.7) |
Daily mean °F (°C) | 18.5 (−7.5) |
20.8 (−6.2) |
33.8 (1.0) |
49.1 (9.5) |
62.1 (16.7) |
71.6 (22.0) |
75.4 (24.1) |
73.6 (23.1) |
66.4 (19.1) |
52.9 (11.6) |
37.4 (3.0) |
23.7 (−4.6) |
48.8 (9.3) |
Mean daily minimum °F (°C) | 11.3 (−11.5) |
13.1 (−10.5) |
24.4 (−4.2) |
38.5 (3.6) |
50.9 (10.5) |
60.4 (15.8) |
64.2 (17.9) |
62.8 (17.1) |
55.0 (12.8) |
42.4 (5.8) |
29.1 (−1.6) |
17.1 (−8.3) |
39.1 (3.9) |
Mean minimum °F (°C) | −10.8 (−23.8) |
−6.9 (−21.6) |
5.0 (−15.0) |
22.5 (−5.3) |
35.4 (1.9) |
45.1 (7.3) |
52.0 (11.1) |
50.4 (10.2) |
39.4 (4.1) |
27.0 (−2.8) |
12.4 (−10.9) |
−3.1 (−19.5) |
−14.1 (−25.6) |
Record low °F (°C) | −29 (−34) |
−27 (−33) |
−15 (−26) |
7 (−14) |
25 (−4) |
32 (0) |
39 (4) |
34 (1) |
27 (−3) |
14 (−10) |
−4 (−20) |
−27 (−33) |
−29 (−34) |
Average precipitation inches (mm) | 2.4 (60) |
2.3 (58) |
2.6 (66) |
3.5 (88) |
3.8 (97) |
3.5 (88) |
3.3 (83) |
3.1 (80) |
2.9 (74) |
2.6 (66) |
2.6 (67) |
2.4 (62) |
35 (889) |
Average snowfall inches (cm) | 24.9 (63.3) |
22.7 (57.6) |
10.4 (26.5) |
2.1 (5.3) |
0.0 (0.0) |
0.0 (0.0) |
0.0 (0.0) |
0.0 (0.0) |
0.0 (0.0) |
0.2 (0.6) |
5.3 (13.4) |
20.4 (51.9) |
86 (218.6) |
Average precipitation days (≥ 0.1 mm) | 13.5 | 10.9 | 11.5 | 12.3 | 12.9 | 10.6 | 9.6 | 9.3 | 9.1 | 10.7 | 10.5 | 12.2 | 133.1 |
Average snowy days (≥ 0.1 cm) | 12.0 | 8.8 | 5.3 | 1.7 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.2 | 4.0 | 8.3 | 40.3 |
Average relative humidity (%) | 74.2 | 72.9 | 70.5 | 66.2 | 66.3 | 69.0 | 71.8 | 75.6 | 76.2 | 72.5 | 75.6 | 78.6 | 72.4 |
Mean monthly sunshine hours | 126.0 | 142.2 | 183.7 | 213.7 | 265.9 | 288.2 | 299.3 | 263.7 | 220.3 | 180.4 | 106.5 | 90.2 | 2,380.1 |
Percent possible sunshine | 43 | 48 | 50 | 53 | 59 | 63 | 65 | 62 | 59 | 52 | 36 | 32 | 53 |
Average ultraviolet index | 1 | 2 | 4 | 6 | 7 | 9 | 9 | 8 | 6 | 4 | 2 | 1 | 5 |
Source 1: NOAA (relative humidity and sun 1961−1990) [4] [24] [25] [5] | |||||||||||||
Source 2: Weather Atlas [26] |
Cleveland | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Climate data for Cleveland ( Cleveland Airport), 1991–2020 normals, [h] extremes 1871–present [i] | |||||||||||||
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Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Year |
Record high °F (°C) | 64 (18) |
68 (20) |
77 (25) |
86 (30) |
93 (34) |
104 (40) |
102 (39) |
102 (39) |
100 (38) |
91 (33) |
77 (25) |
68 (20) |
104 (40) |
Mean maximum °F (°C) | 49.8 (9.9) |
51.8 (11.0) |
65.5 (18.6) |
78.4 (25.8) |
86.7 (30.4) |
91.8 (33.2) |
92.7 (33.7) |
91.2 (32.9) |
88.9 (31.6) |
78.6 (25.9) |
63.5 (17.5) |
51.1 (10.6) |
93.9 (34.4) |
Mean daily maximum °F (°C) | 26.8 (−2.9) |
29.5 (−1.4) |
41.7 (5.4) |
58.3 (14.6) |
71.1 (21.7) |
79.9 (26.6) |
83.7 (28.7) |
82.0 (27.8) |
75.6 (24.2) |
61.9 (16.6) |
45.9 (7.7) |
31.5 (−0.3) |
57.3 (14.1) |
Daily mean °F (°C) | 20.1 (−6.6) |
22.1 (−5.5) |
33.4 (0.8) |
48.6 (9.2) |
61.2 (16.2) |
70.3 (21.3) |
74.5 (23.6) |
73.0 (22.8) |
66.4 (19.1) |
53.2 (11.8) |
38.7 (3.7) |
25.3 (−3.7) |
48.9 (9.4) |
Mean daily minimum °F (°C) | 13.3 (−10.4) |
14.7 (−9.6) |
25.3 (−3.7) |
39.0 (3.9) |
51.4 (10.8) |
61.2 (16.2) |
65.3 (18.5) |
63.9 (17.7) |
57.0 (13.9) |
44.8 (7.1) |
31.3 (−0.4) |
19.2 (−7.1) |
40.5 (4.7) |
Mean minimum °F (°C) | −7.8 (−22.1) |
−5.1 (−20.6) |
6.8 (−14.0) |
24.1 (−4.4) |
36.1 (2.3) |
45.9 (7.7) |
53.2 (11.8) |
51.6 (10.9) |
43.0 (6.1) |
30.4 (−0.9) |
15.4 (−9.2) |
4.5 (−15.3) |
−11 (−24) |
Record low °F (°C) | −29 (−34) |
−26 (−32) |
−11 (−24) |
9 (−13) |
25 (−4) |
30 (−1) |
41 (5) |
37 (3) |
32 (0) |
18 (−8) |
−6 (−21) |
−24 (−31) |
−29 (−34) |
Average precipitation inches (mm) | 3.0 (76) |
2.5 (63) |
3.1 (78) |
3.7 (95) |
3.8 (96) |
3.8 (97) |
3.7 (93) |
3.5 (90) |
3.9 (100) |
3.6 (91) |
3.4 (86) |
3.0 (76) |
41 (1,041) |
Average snowfall inches (cm) | 29 (74) |
23 (58) |
14 (36) |
3.1 (8) |
0.0 (0.0) |
0.0 (0.0) |
0.0 (0.0) |
0.0 (0.0) |
0.0 (0.0) |
0.1 (0.3) |
7.5 (19) |
27 (68) |
103.7 (263.3) |
Average precipitation days (≥ 0.2 mm) | 17.7 | 14.6 | 14.6 | 14.8 | 13.4 | 11.5 | 10.7 | 10.3 | 10.1 | 12.1 | 13.1 | 15.6 | 158.5 |
Average snowy days (≥ 0.2 cm) | 13.5 | 10.5 | 7.2 | 2.1 | 0.1 | 0.0 | 0.0 | 0.0 | 0.0 | 0.2 | 3.8 | 8.4 | 45.8 |
Average relative humidity (%) | 73.3 | 73.0 | 70.4 | 66.1 | 67.3 | 69.0 | 69.8 | 73.1 | 73.7 | 70.8 | 71.9 | 74.1 | 71.0 |
Mean monthly sunshine hours | 101.0 | 122.3 | 167.0 | 216.0 | 263.6 | 294.6 | 307.2 | 262.2 | 219.0 | 169.5 | 89.8 | 67.8 | 2,280 |
Percent possible sunshine | 34 | 41 | 45 | 54 | 59 | 65 | 67 | 61 | 59 | 49 | 30 | 24 | 51 |
Average ultraviolet index | 2 | 2 | 4 | 6 | 7 | 9 | 9 | 8 | 6 | 4 | 2 | 1 | 5 |
Source 1: NOAA (relative humidity and sun 1961–1990) [2] [28] [5] | |||||||||||||
Source 2: Weather Atlas [6] (sunshine data) |
Columbus | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Climate data for Columbus, Ohio ( John Glenn Int'l), 1991–2020 normals, [j] extremes 1878–present [k] | |||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Year |
Record high °F (°C) | 64 (18) |
70 (21) |
79 (26) |
88 (31) |
97 (36) |
102 (39) |
106 (41) |
102 (39) |
100 (38) |
91 (33) |
75 (24) |
66 (19) |
106 (41) |
Mean maximum °F (°C) | 51.6 (10.9) |
55.0 (12.8) |
68.2 (20.1) |
79.9 (26.6) |
88.3 (31.3) |
93.0 (33.9) |
93.7 (34.3) |
92.8 (33.8) |
90.1 (32.3) |
81.3 (27.4) |
65.1 (18.4) |
53.4 (11.9) |
95.0 (35.0) |
Mean daily maximum °F (°C) | 28.0 (−2.2) |
31.8 (−0.1) |
45.7 (7.6) |
62.2 (16.8) |
74.1 (23.4) |
82.2 (27.9) |
85.5 (29.7) |
84.0 (28.9) |
77.7 (25.4) |
63.7 (17.6) |
46.9 (8.3) |
32.5 (0.3) |
59.5 (15.3) |
Daily mean °F (°C) | 20.7 (−6.3) |
23.5 (−4.7) |
36.1 (2.3) |
51.4 (10.8) |
63.3 (17.4) |
72.0 (22.2) |
75.4 (24.1) |
73.9 (23.3) |
67.3 (19.6) |
53.4 (11.9) |
38.1 (3.4) |
25.5 (−3.6) |
50.1 (10.0) |
Mean daily minimum °F (°C) | 12.9 (−10.6) |
15.3 (−9.3) |
26.6 (−3.0) |
40.5 (4.7) |
52.3 (11.3) |
61.5 (16.4) |
65.5 (18.6) |
63.9 (17.7) |
56.5 (13.6) |
43.0 (6.1) |
29.7 (−1.3) |
18.3 (−7.6) |
40.5 (4.7) |
Mean minimum °F (°C) | −7.2 (−21.8) |
−2.7 (−19.3) |
9.1 (−12.7) |
25.3 (−3.7) |
37.8 (3.2) |
48.6 (9.2) |
55.8 (13.2) |
54.3 (12.4) |
43.2 (6.2) |
29.3 (−1.5) |
15.3 (−9.3) |
1.9 (−16.7) |
−9.9 (−23.3) |
Record low °F (°C) | −31 (−35) |
−29 (−34) |
−11 (−24) |
10 (−12) |
25 (−4) |
36 (2) |
43 (6) |
39 (4) |
30 (−1) |
16 (−9) |
−11 (−24) |
−26 (−32) |
−31 (−35) |
Average precipitation inches (mm) | 3.0 (76) |
2.4 (61) |
3.6 (92) |
3.9 (98) |
4.0 (101) |
4.3 (110) |
4.7 (119) |
3.7 (95) |
3.1 (80) |
2.9 (74) |
2.8 (71) |
3.1 (80) |
41.5 (1,057) |
Average snowfall inches (cm) | 22.2 (56.3) |
16.0 (40.6) |
6.7 (16.9) |
0.7 (1.8) |
0.0 (0.0) |
0.0 (0.0) |
0.0 (0.0) |
0.0 (0.0) |
0.0 (0.0) |
0.4 (0.9) |
3.9 (9.8) |
17.0 (43.3) |
66.9 (169.6) |
Average precipitation days (≥ 0.1 mm) | 14.7 | 11.8 | 12.5 | 13.7 | 14.0 | 11.7 | 10.9 | 9.5 | 8.7 | 10.0 | 10.5 | 12.7 | 140.7 |
Average snowy days (≥ 0.1 cm) | 12.0 | 6.7 | 4.0 | 1.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.2 | 2.3 | 7.6 | 33.8 |
Average relative humidity (%) | 71.4 | 69.5 | 64.5 | 62.5 | 66.5 | 68.5 | 70.6 | 72.8 | 72.8 | 69.3 | 71.8 | 74.1 | 69.5 |
Average dew point °F (°C) | 9.1 (−12.7) |
11.5 (−11.4) |
23.2 (−4.9) |
35.6 (2.0) |
48.9 (9.4) |
58.3 (14.6) |
62.8 (17.1) |
61.7 (16.5) |
55.2 (12.9) |
40.8 (4.9) |
28.2 (−2.1) |
15.3 (−9.3) |
37.6 (3.1) |
Mean monthly sunshine hours | 110.6 | 126.3 | 162.0 | 201.8 | 243.4 | 258.1 | 260.9 | 235.9 | 212.0 | 183.1 | 104.2 | 84.3 | 2,182.6 |
Percent possible sunshine | 37 | 42 | 44 | 51 | 55 | 57 | 57 | 56 | 57 | 53 | 35 | 29 | 49 |
Average ultraviolet index | 2 | 3 | 4 | 6 | 8 | 9 | 9 | 8 | 6 | 4 | 2 | 1 | 5 |
Source: NOAA (sun, relative humidity, and dew point 1961–1990) [30] [2] [31] [22] and Weather Atlas [6] |
Indianapolis | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Climate data for Indianapolis ( Indianapolis International Airport), 1991–2020 normals, [l] extremes 1871–present [m] | |||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Year |
Record high °F (°C) | 63 (17) |
68 (20) |
79 (26) |
88 (31) |
97 (36) |
104 (40) |
106 (41) |
102 (39) |
100 (38) |
90 (32) |
75 (24) |
64 (18) |
106 (41) |
Mean maximum °F (°C) | 49.8 (9.9) |
55.4 (13.0) |
68.5 (20.3) |
79.0 (26.1) |
87.1 (30.6) |
91.9 (33.3) |
93.4 (34.1) |
92.7 (33.7) |
90.7 (32.6) |
81.0 (27.2) |
65.1 (18.4) |
52.7 (11.5) |
94.8 (34.9) |
Mean daily maximum °F (°C) | 27.1 (−2.7) |
31.8 (−0.1) |
46.6 (8.1) |
62.1 (16.7) |
73.4 (23.0) |
82.0 (27.8) |
85.3 (29.6) |
84.4 (29.1) |
78.3 (25.7) |
63.9 (17.7) |
46.4 (8.0) |
31.5 (−0.3) |
59.4 (15.2) |
Daily mean °F (°C) | 19.6 (−6.9) |
23.5 (−4.7) |
37.0 (2.8) |
51.8 (11.0) |
63.7 (17.6) |
72.5 (22.5) |
75.7 (24.3) |
74.7 (23.7) |
67.8 (19.9) |
53.8 (12.1) |
37.9 (3.3) |
24.3 (−4.3) |
50.2 (10.1) |
Mean daily minimum °F (°C) | 11.8 (−11.2) |
15.3 (−9.3) |
27.7 (−2.4) |
41.5 (5.3) |
53.8 (12.1) |
63.0 (17.2) |
66.4 (19.1) |
64.9 (18.3) |
57.4 (14.1) |
43.7 (6.5) |
29.5 (−1.4) |
17.2 (−8.2) |
41.0 (5.0) |
Mean minimum °F (°C) | −11.0 (−23.9) |
−4.2 (−20.1) |
9.5 (−12.5) |
25.3 (−3.7) |
37.8 (3.2) |
49.3 (9.6) |
56.1 (13.4) |
55.0 (12.8) |
43.2 (6.2) |
28.4 (−2.0) |
14.2 (−9.9) |
−2.2 (−19.0) |
−13.9 (−25.5) |
Record low °F (°C) | −36 (−38) |
−29 (−34) |
−13 (−25) |
16 (−9) |
27 (−3) |
37 (3) |
46 (8) |
41 (5) |
30 (−1) |
18 (−8) |
−11 (−24) |
−33 (−36) |
−36 (−38) |
Average precipitation inches (mm) | 3.1 (79) |
2.4 (62) |
3.7 (94) |
4.3 (110) |
4.8 (121) |
5.0 (126) |
4.4 (112) |
3.2 (81) |
3.1 (80) |
3.2 (82) |
3.5 (88) |
2.9 (74) |
43.6 (1,109) |
Average snowfall inches (cm) | 28 (72) |
18 (45) |
5.9 (15) |
0.8 (2) |
0.0 (0.0) |
0.0 (0.0) |
0.0 (0.0) |
0.0 (0.0) |
0.0 (0.0) |
0.0 (0.0) |
2.8 (7) |
22 (56) |
77.5 (197) |
Average extreme snow depth inches (cm) | 12 (31) |
15 (37) |
4.7 (12) |
0.4 (1) |
0 (0) |
0 (0) |
0 (0) |
0 (0) |
0 (0) |
0 (0) |
1.2 (3) |
6.7 (17) |
17 (43) |
Average precipitation days (≥ 0.2 mm) | 12.3 | 10.3 | 11.5 | 11.9 | 13.3 | 11.5 | 10.3 | 8.3 | 7.9 | 8.9 | 10.2 | 11.8 | 128.2 |
Average snowy days (≥ 0.2 cm) | 10.0 | 6.8 | 3.4 | 0.5 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.2 | 2.2 | 7.6 | 30.7 |
Average relative humidity (%) | 75.0 | 73.6 | 69.9 | 65.6 | 67.1 | 68.4 | 72.4 | 75.4 | 74.4 | 71.6 | 75.5 | 78.0 | 72.2 |
Average dew point °F (°C) | 9.1 (−12.7) |
12.6 (−10.8) |
25.5 (−3.6) |
37.9 (3.3) |
50.5 (10.3) |
59.9 (15.5) |
64.9 (18.3) |
63.7 (17.6) |
56.7 (13.7) |
42.3 (5.7) |
29.5 (−1.4) |
15.4 (−9.2) |
39.0 (3.9) |
Mean monthly sunshine hours | 132.1 | 145.7 | 178.3 | 214.8 | 264.7 | 287.2 | 295.2 | 273.7 | 232.6 | 196.6 | 117.1 | 102.4 | 2,440.4 |
Percent possible sunshine | 44 | 49 | 48 | 54 | 59 | 64 | 65 | 64 | 62 | 57 | 39 | 35 | 53 |
Source: NOAA (relative humidity, dew point, and sun 1961–1990) [33] [34] [35] |
St. Louis | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Climate data for St. Louis, Missouri ( Lambert–St. Louis Int'l), 1991−2020 normals, [n] extremes 1874−present [o] | |||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Year |
Record high °F (°C) | 68 (20) |
75 (24) |
86 (30) |
91 (33) |
99 (37) |
108 (42) |
115 (46) |
109 (43) |
104 (40) |
91 (33) |
81 (27) |
66 (19) |
115 (46) |
Mean maximum °F (°C) | 55.8 (13.2) |
62.1 (16.7) |
73.9 (23.3) |
84.6 (29.2) |
90.3 (32.4) |
95.5 (35.3) |
99.1 (37.3) |
99.1 (37.3) |
92.5 (33.6) |
85.3 (29.6) |
70.2 (21.2) |
57.9 (14.4) |
100.8 (38.2) |
Mean daily maximum °F (°C) | 31.5 (−0.3) |
36.9 (2.7) |
51.3 (10.7) |
66.2 (19.0) |
77.2 (25.1) |
85.8 (29.9) |
89.6 (32.0) |
88.3 (31.3) |
81.1 (27.3) |
67.5 (19.7) |
50.2 (10.1) |
35.4 (1.9) |
63.4 (17.5) |
Daily mean °F (°C) | 23.2 (−4.9) |
27.7 (−2.4) |
41.2 (5.1) |
55.8 (13.2) |
67.5 (19.7) |
76.5 (24.7) |
80.4 (26.9) |
78.8 (26.0) |
71.1 (21.7) |
57.4 (14.1) |
41.2 (5.1) |
27.5 (−2.5) |
54.0 (12.2) |
Mean daily minimum °F (°C) | 14.7 (−9.6) |
18.7 (−7.4) |
31.3 (−0.4) |
45.1 (7.3) |
57.9 (14.4) |
67.3 (19.6) |
71.1 (21.7) |
69.3 (20.7) |
61.0 (16.1) |
47.3 (8.5) |
32.0 (0.0) |
19.6 (−6.9) |
44.6 (7.0) |
Mean minimum °F (°C) | −4.5 (−20.3) |
0.7 (−17.4) |
12.4 (−10.9) |
30.4 (−0.9) |
43.5 (6.4) |
55.6 (13.1) |
61.3 (16.3) |
60.1 (15.6) |
47.1 (8.4) |
31.8 (−0.1) |
16.5 (−8.6) |
1.9 (−16.7) |
−7.8 (−22.1) |
Record low °F (°C) | −31 (−35) |
−27 (−33) |
−11 (−24) |
18 (−8) |
30 (−1) |
43 (6) |
52 (11) |
46 (8) |
32 (0) |
19 (−7) |
−4 (−20) |
−26 (−32) |
−31 (−35) |
Average precipitation inches (mm) | 2.6 (66) |
2.1 (54) |
3.5 (89) |
4.7 (120) |
4.8 (122) |
4.5 (114) |
3.9 (100) |
3.4 (86) |
3.0 (75) |
3.1 (80) |
3.4 (87) |
2.5 (64) |
41.5 (1,057) |
Average snowfall inches (cm) | 20 (50) |
13 (33) |
3.5 (8.8) |
0.3 (0.7) |
0.0 (0.0) |
0.0 (0.0) |
0.0 (0.0) |
0.0 (0.0) |
0.0 (0.0) |
0.1 (0.2) |
2.1 (5.3) |
17 (42) |
56 (140) |
Average precipitation days (≥ 0.2 mm) | 9.3 | 8.7 | 10.8 | 11.5 | 12.6 | 9.8 | 8.9 | 8.4 | 7.3 | 8.5 | 9.0 | 9.0 | 113.8 |
Average snowy days (≥ 0.2 cm) | 7.0 | 5.6 | 2.7 | 0.4 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.2 | 1.4 | 6.2 | 14.5 |
Average relative humidity (%) | 73.0 | 72.0 | 68.3 | 63.5 | 66.5 | 67.1 | 68.0 | 70.0 | 71.6 | 68.7 | 72.2 | 75.8 | 69.7 |
Average dew point °F (°C) | 11.1 (−11.6) |
15.1 (−9.4) |
27.7 (−2.4) |
40.5 (4.7) |
52.9 (11.6) |
62.1 (16.7) |
66.6 (19.2) |
65.1 (18.4) |
58.6 (14.8) |
44.2 (6.8) |
30.6 (−0.8) |
16.5 (−8.6) |
40.9 (5.0) |
Mean monthly sunshine hours | 161.2 | 158.3 | 198.3 | 223.5 | 266.5 | 291.9 | 308.9 | 269.8 | 236.1 | 208.4 | 140.9 | 129.9 | 2,593.7 |
Percent possible sunshine | 53 | 53 | 53 | 56 | 60 | 66 | 68 | 64 | 63 | 60 | 47 | 44 | 58 |
Source: NOAA (relative humidity and sun 1961−1990) [38] [39] [40] |
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