Chicago Weather History (IL)
Summary
Temp.
(ºF)
Relative Humidity
(Percentage)
Extreme Temp.
(Days Per Month)
Rain
(Inches)
Cloudiness
(Days Per Month)
Average
A.M.
P.M.
Below
32º
Above
90º
Average
Clear
Partly
Cloudy
Cloudy
January
21.0
78%
69%
29
0
1.5
7
6
18
February
25.4
78%
67%
25
0
1.4
6
6
16
March
37.2
79%
63%
21
0
2.7
5
8
18
April
48.6
77%
57%
7
N/A
3.6
6
8
16
May
58.9
77%
56%
1
1
3.3
7
10
14
June
68.6
79%
57%
0
4
3.8
7
11
11
July
73.2
82%
59%
0
6
3.7
8
12
10
August
71.7
86%
60%
0
4
4.2
9
11
11
September
64.4
85%
59%
N/A
2
3.8
9
10
11
October
52.8
81%
58%
5
N/A
2.4
9
9
14
November
40.0
80%
65%
17
0
2.9
5
6
18
December
26.6
80%
71%
26
0
2.5
6
6
19
Annual
49.0
80%
62%
130
17
35.8
84
105
176
Average Temperature (ºF)
Jan.
Feb.
Mar.
Apr.
May.
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
21.0
25.4
37.2
48.6
58.9
68.6
73.2
71.7
64.4
52.8
40.0
26.6
Relative Humidity (Percentage)
Morning
Jan.
Feb.
Mar.
Apr.
May.
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
78%
78%
79%
77%
77%
79%
82%
86%
85%
81%
80%
80%
Afternoon
69%
67%
63%
57%
56%
57%
59%
60%
59%
58%
65%
71%
Rain (Inches)
Jan.
Feb.
Mar.
Apr.
May.
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
1.5
1.4
2.7
3.6
3.3
3.8
3.7
4.2
3.8
2.4
2.9
2.5
Cloudiness (Days Per Month)
January
February
March
Clear
7 Days
6 Days
5 Days
Partly Cloudy
6 Days
6 Days
8 Days
Cloudy
18 Days
18 Days
18 Days
April
May
June
Clear
6 Days
7 Days
7 Days
Partly Cloudy
8 Days
10 Days
11 Days
Cloudy
16 Days
14 Days
11 Days
July
August
September
Clear
8 Days
9 Days
9 Days
Partly Cloudy
12 Days
11 Days
10 Days
Cloudy
10 Days
11 Days
11 Days
October
November
December
Clear
9 Days
5 Days
6 Days
Partly Cloudy
9 Days
6 Days
6 Days
Cloudy
14 Days
18 Days
19 Days
Clear
Partly Cloudy
Cloudy
Days Per Year
84
105
176
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