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Current
Hourly
7 Days
14 Days
Weekend
Monthly
Precipitation
Temperature
Wind
Temperature Unit Selection
°Celsius
°Fahrenheit
Monthly Historical Averages
Chicago, IL
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September
Average Temperature
High
24°
Feels 24
Low
16°
Feels 15
Average Precipitation
10 Days
Rain amount
66mm
Snow amount
0cm
Content continues below
Daily Historical Averages
September 2026
S
M
T
W
T
F
S
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
21°
17
23°
18
22°
19
26°
20
21°
21
19°
22
19°
23
20°
24
20°
25
21°
26
21°
27
21°
28
21°
29
21°
30
21°
Forecast
Wednesday, September 16, 2026
Day
21°
Feels 21
Wind
19 km/h NE
Gust
29 km/h
Humidity
83%
P.O.P
90%
Rain
5-10 mm
Night
20°
Feels 20
Wind
20 km/h NE
Gust
30 km/h
Humidity
94%
P.O.P
70%
Rain
1-3 mm
Historical Averages
Sep 16
High
Feels
Low
Feels
Precip Frequency
Total Daylight
Humidity
Historical Averages are based on data recorded from 2000 onwards.