User:Timothy2b/sandbox GSC United States - Midwest

Wisconsin

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Milwaukee - Humid continental (Dfa)

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Milwaukee
Climate chart (explanation)
J
F
M
A
M
J
J
A
S
O
N
D
 
 
45
 
 
−6
−13
 
 
43
 
 
−4
−12
 
 
56
 
 
4
−5
 
 
98
 
 
12
2
 
 
90
 
 
19
9
 
 
111
 
 
25
15
 
 
86
 
 
28
18
 
 
93
 
 
27
18
 
 
80
 
 
23
14
 
 
71
 
 
15
6
 
 
57
 
 
6
−2
 
 
48
 
 
−3
−10
Average max. and min. temperatures in °C
Precipitation totals in mm
Source: NOAA[1]
Imperial conversion
JFMAMJJASOND
 
 
1.8
 
 
22
8
 
 
1.7
 
 
25
11
 
 
2.2
 
 
39
23
 
 
3.9
 
 
53
36
 
 
3.5
 
 
67
48
 
 
4.4
 
 
77
58
 
 
3.4
 
 
82
65
 
 
3.7
 
 
80
64
 
 
3.1
 
 
74
56
 
 
2.8
 
 
60
43
 
 
2.2
 
 
42
28
 
 
1.9
 
 
27
14
Average max. and min. temperatures in °F
Precipitation totals in inches
Climate data for Milwaukee (Mitchell International Airport), 1991–2020 normals,[A] extremes 1871–present[B]
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]

Michigan

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Grand Rapids - Humid continental (Dfa)

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Grand Rapids
Climate chart (explanation)
J
F
M
A
M
J
J
A
S
O
N
D
 
 
64
 
 
−6
−12
 
 
54
 
 
−4
−12
 
 
61
 
 
4
−6
 
 
101
 
 
13
2
 
 
102
 
 
21
9
 
 
100
 
 
26
15
 
 
98
 
 
28
17
 
 
90
 
 
27
16
 
 
87
 
 
23
12
 
 
102
 
 
15
5
 
 
79
 
 
5
−3
 
 
63
 
 
−3
−9
Average max. and min. temperatures in °C
Precipitation totals in mm
Source: NOAA[7]
Imperial conversion
JFMAMJJASOND
 
 
2.5
 
 
22
10
 
 
2.1
 
 
25
11
 
 
2.4
 
 
39
22
 
 
4
 
 
56
35
 
 
4
 
 
70
49
 
 
3.9
 
 
79
58
 
 
3.9
 
 
83
62
 
 
3.5
 
 
81
61
 
 
3.4
 
 
74
53
 
 
4
 
 
59
40
 
 
3.1
 
 
42
27
 
 
2.5
 
 
27
16
Average max. and min. temperatures in °F
Precipitation totals in inches
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 - Humid continental (Dfa)

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Detroit
Climate chart (explanation)
J
F
M
A
M
J
J
A
S
O
N
D
 
 
57
 
 
−5
−12
 
 
53
 
 
−3
−11
 
 
62
 
 
5
−5
 
 
83
 
 
14
3
 
 
94
 
 
21
10
 
 
83
 
 
27
16
 
 
89
 
 
29
18
 
 
83
 
 
27
17
 
 
82
 
 
24
13
 
 
64
 
 
16
6
 
 
65
 
 
6
−2
 
 
57
 
 
−2
−9
Average max. and min. temperatures in °C
Precipitation totals in mm
Source: NOAA[12]
Imperial conversion
JFMAMJJASOND
 
 
2.2
 
 
23
10
 
 
2.1
 
 
26
12
 
 
2.4
 
 
40
23
 
 
3.3
 
 
57
37
 
 
3.7
 
 
70
50
 
 
3.3
 
 
80
60
 
 
3.5
 
 
84
64
 
 
3.3
 
 
81
63
 
 
3.2
 
 
74
56
 
 
2.5
 
 
60
42
 
 
2.6
 
 
43
29
 
 
2.2
 
 
28
16
Average max. and min. temperatures in °F
Precipitation totals in inches
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]

Illinois

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Chicago - Humid continental (Dfa)

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Chicago, Illinois
Climate chart (explanation)
J
F
M
A
M
J
J
A
S
O
N
D
 
 
51
 
 
−5
−12
 
 
50
 
 
−3
−11
 
 
62
 
 
5
−4
 
 
95
 
 
14
4
 
 
114
 
 
21
10
 
 
104
 
 
27
16
 
 
94
 
 
29
19
 
 
108
 
 
28
18
 
 
81
 
 
24
14
 
 
87
 
 
16
6
 
 
61
 
 
6
−2
 
 
54
 
 
−2
−9
Average max. and min. temperatures in °C
Precipitation totals in mm
Source: NOAA[13]
Imperial conversion
JFMAMJJASOND
 
 
2
 
 
23
10
 
 
2
 
 
27
13
 
 
2.4
 
 
42
26
 
 
3.7
 
 
57
38
 
 
4.5
 
 
71
51
 
 
4.1
 
 
80
61
 
 
3.7
 
 
85
66
 
 
4.3
 
 
83
65
 
 
3.2
 
 
76
57
 
 
3.4
 
 
61
44
 
 
2.4
 
 
43
29
 
 
2.1
 
 
28
15
Average max. and min. temperatures in °F
Precipitation totals in inches
Climate data for Chicago (O'Hare Int'l Airport), 1991–2020 normals,[b] extremes 1871–present[c]
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]

Nebraska

edit
Omaha
Climate chart (explanation)
J
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A
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J
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19
 
 
−4
−14
 
 
24
 
 
−1
−12
 
 
45
 
 
8
−4
 
 
81
 
 
17
4
 
 
118
 
 
24
12
 
 
113
 
 
29
17
 
 
90
 
 
31
20
 
 
117
 
 
30
19
 
 
75
 
 
26
13
 
 
59
 
 
18
5
 
 
37
 
 
7
−4
 
 
31
 
 
−2
−12
Average max. and min. temperatures in °C
Precipitation totals in mm
Source: NOAA[18]
Imperial conversion
JFMAMJJASOND
 
 
0.7
 
 
25
6
 
 
0.9
 
 
30
10
 
 
1.8
 
 
47
25
 
 
3.2
 
 
62
39
 
 
4.6
 
 
75
53
 
 
4.4
 
 
84
63
 
 
3.5
 
 
88
68
 
 
4.6
 
 
86
66
 
 
3
 
 
79
56
 
 
2.3
 
 
64
41
 
 
1.5
 
 
45
25
 
 
1.2
 
 
29
11
Average max. and min. temperatures in °F
Precipitation totals in inches
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 / 41.3536; -96.0233)[20][2][21][22]

Ohio

edit
Toledo
Climate chart (explanation)
J
F
M
A
M
J
J
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D
 
 
60
 
 
−4
−12
 
 
58
 
 
−2
−11
 
 
66
 
 
6
−4
 
 
88
 
 
15
4
 
 
97
 
 
23
11
 
 
88
 
 
28
16
 
 
83
 
 
30
18
 
 
80
 
 
29
17
 
 
74
 
 
25
13
 
 
66
 
 
17
6
 
 
67
 
 
8
−2
 
 
62
 
 
−1
−8
Average max. and min. temperatures in °C
Precipitation totals in mm
Source: NOAA[23]
Imperial conversion
JFMAMJJASOND
 
 
2.4
 
 
26
11
 
 
2.3
 
 
29
13
 
 
2.6
 
 
43
24
 
 
3.5
 
 
60
38
 
 
3.8
 
 
73
51
 
 
3.5
 
 
83
60
 
 
3.3
 
 
87
64
 
 
3.1
 
 
84
63
 
 
2.9
 
 
78
55
 
 
2.6
 
 
63
42
 
 
2.6
 
 
46
29
 
 
2.4
 
 
30
17
Average max. and min. temperatures in °F
Precipitation totals in inches
Climate data for Toledo, Ohio (Toledo Express Airport), 1991−2020 normals,[f] extremes 1871−present[g]
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 - Humid continental (Dfa)

edit
Cleveland
Climate chart (explanation)
J
F
M
A
M
J
J
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76
 
 
−3
−10
 
 
63
 
 
−1
−10
 
 
78
 
 
5
−4
 
 
95
 
 
15
4
 
 
96
 
 
22
11
 
 
97
 
 
27
16
 
 
93
 
 
29
19
 
 
90
 
 
28
18
 
 
100
 
 
24
14
 
 
91
 
 
17
7
 
 
86
 
 
8
0
 
 
76
 
 
0
−7
Average max. and min. temperatures in °C
Precipitation totals in mm
Source: NOAA[27]
Imperial conversion
JFMAMJJASOND
 
 
3
 
 
27
13
 
 
2.5
 
 
29
15
 
 
3.1
 
 
42
25
 
 
3.7
 
 
58
39
 
 
3.8
 
 
71
51
 
 
3.8
 
 
80
61
 
 
3.7
 
 
84
65
 
 
3.5
 
 
82
64
 
 
3.9
 
 
76
57
 
 
3.6
 
 
62
45
 
 
3.4
 
 
46
31
 
 
3
 
 
31
19
Average max. and min. temperatures in °F
Precipitation totals in inches
Climate data for Cleveland (Cleveland Airport), 1991–2020 normals,[h] extremes 1871–present[i]
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 - Humid continental (Dfa)

edit
Columbus
Climate chart (explanation)
J
F
M
A
M
J
J
A
S
O
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76
 
 
−2
−11
 
 
61
 
 
0
−9
 
 
92
 
 
8
−3
 
 
98
 
 
17
5
 
 
101
 
 
23
11
 
 
110
 
 
28
16
 
 
110
 
 
30
19
 
 
95
 
 
29
18
 
 
80
 
 
25
14
 
 
74
 
 
18
6
 
 
71
 
 
8
−1
 
 
80
 
 
0
−8
Average max. and min. temperatures in °C
Precipitation totals in mm
Source: NOAA[29]
Imperial conversion
JFMAMJJASOND
 
 
3
 
 
28
13
 
 
2.4
 
 
32
15
 
 
3.6
 
 
46
27
 
 
3.9
 
 
62
40
 
 
4
 
 
74
52
 
 
4.3
 
 
82
62
 
 
4.3
 
 
85
65
 
 
3.7
 
 
84
64
 
 
3.1
 
 
78
56
 
 
2.9
 
 
64
43
 
 
2.8
 
 
47
30
 
 
3.1
 
 
33
18
Average max. and min. temperatures in °F
Precipitation totals in inches
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)
0.3
(0.7)
0.0
(0.0)
0.0
(0.0)
0.0
(0.0)
0.0
(0.0)
0.0
(0.0)
0.1
(0.3)
3.9
(9.8)
17.0
(43.3)
66.2
(167.9)
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 0.3 0.0 0.0 0.0 0.0 0.0 0.2 2.3 7.6 33.1
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]

Indiana

edit

Indianapolis - Humid continental (Dfa)

edit
Indianapolis
Climate chart (explanation)
J
F
M
A
M
J
J
A
S
O
N
D
 
 
79
 
 
−3
−11
 
 
62
 
 
0
−9
 
 
94
 
 
8
−2
 
 
110
 
 
17
5
 
 
121
 
 
23
12
 
 
126
 
 
28
17
 
 
112
 
 
30
19
 
 
81
 
 
29
18
 
 
80
 
 
26
14
 
 
82
 
 
18
7
 
 
88
 
 
8
−1
 
 
74
 
 
0
−8
Average max. and min. temperatures in °C
Precipitation totals in mm
Source: NOAA[32]
Imperial conversion
JFMAMJJASOND
 
 
3.1
 
 
27
12
 
 
2.4
 
 
32
15
 
 
3.7
 
 
47
28
 
 
4.3
 
 
62
42
 
 
4.8
 
 
73
54
 
 
5
 
 
82
63
 
 
4.4
 
 
85
66
 
 
3.2
 
 
84
65
 
 
3.1
 
 
78
57
 
 
3.2
 
 
64
44
 
 
3.5
 
 
46
29
 
 
2.9
 
 
31
17
Average max. and min. temperatures in °F
Precipitation totals in inches
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]

Missouri

edit

St. Louis - Humid continental (Dfa)

edit
St. Louis
Climate chart (explanation)
J
F
M
A
M
J
J
A
S
O
N
D
 
 
66
 
 
0
−10
 
 
57
 
 
3
−7
 
 
89
 
 
11
0
 
 
120
 
 
19
7
 
 
122
 
 
25
14
 
 
114
 
 
30
20
 
 
100
 
 
32
22
 
 
86
 
 
31
21
 
 
75
 
 
27
16
 
 
80
 
 
20
9
 
 
87
 
 
10
0
 
 
64
 
 
2
−7
Average max. and min. temperatures in °C
Precipitation totals in mm
Source: NOAA[36]
Imperial conversion
JFMAMJJASOND
 
 
2.6
 
 
31
15
 
 
2.2
 
 
37
19
 
 
3.5
 
 
51
31
 
 
4.7
 
 
66
45
 
 
4.8
 
 
77
58
 
 
4.5
 
 
86
67
 
 
3.9
 
 
90
71
 
 
3.4
 
 
88
69
 
 
3
 
 
81
61
 
 
3.1
 
 
67
47
 
 
3.4
 
 
50
32
 
 
2.5
 
 
35
20
Average max. and min. temperatures in °F
Precipitation totals in inches
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)
0.0
(0.1)
0.0
(0.0)
0.0
(0.0)
0.0
(0.0)
0.0
(0.0)
0.0
(0.0)
0.0
(0.0)
2.1
(5.3)
17
(42)
55.6
(139.2)
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 0.1 0.0 0.0 0.0 0.0 0.0 0.0 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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  8. ^ Threadex
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  15. ^ ThreadEx
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  19. ^ ThreadEx
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