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Chicago, USA Weather Averages

July is the hottest month in Chicago with an average temperature of 23°C (73°F) and the coldest is January at -6°C (21°F) with the most daily sunshine hours at 12 in July. The wettest month is July with an average of 100mm of rain..

Average Temperature Chicago

What is Average Temperature?
The average high temperature and the average low temperature for that month, on a daily basis, divided by 2 equals the average temperature for that month
What is Average Temperature?
The average high temperature and the average low temperature for that month, on a daily basis, divided by 2 equals the average temperature for that month

Average High Low Temperature Chicago

What is Average High Low Temperature?
The sum of high temperatures/low temperatures divided by the number of days in that month, recorded daily
What is Average High Low Temperature?
The sum of high temperatures/low temperatures divided by the number of days in that month, recorded daily

Average Day Temperature Chicago

What is Average Day Temperature?
The average temperature recorded between sunrise and sunset
What is Average Day Temperature?
The average temperature recorded between sunrise and sunset

Average Night Temperature Chicago

What is Average Night Temperature?
The average temperature recorded between sunset and sunrise
What is Average Night Temperature?
The average temperature recorded between sunset and sunrise

Average Rainfall Chicago

What is Average Rainfall?
The amount of mm in rain for that month divided by the number of days, and the number of days that it rains during that month on average, over a given period of years
What is Average Rainfall?
The amount of mm in rain for that month divided by the number of days, and the number of days that it rains during that month on average, over a given period of years

Average Daily Sunshine Hours Chicago

What are Average Daily Sunshine Hours?
Total sunshine hours for the month, divided by the number of days in the month. Sunshine hours are taken with a sunshine recorder, either a Campbell-Stokes recorder or an Eppley Pyreheliometer
What are Average Daily Sunshine Hours?
Total sunshine hours for the month, divided by the number of days in the month. Sunshine hours are taken with a sunshine recorder, either a Campbell-Stokes recorder or an Eppley Pyreheliometer

Chicago : Next 24-Hour Weather

Today - 15th September 2026

Sunrise 06:30

Sunrise

Sunset 19:00

Sunset
1:00
Clear
19°C (66°F)
2:00
Clear
20°C (67°F)
3:00
Patchy rain possible
20°C (68°F)
4:00
Light rain shower
20°C (68°F)
5:00
Light rain shower
20°C (68°F)
6:00
Light rain shower
20°C (67°F)
7:00
Light rain shower
19°C (66°F)
8:00
Moderate or heavy rain shower
19°C (65°F)
9:00
Light rain shower
19°C (66°F)
10:00
Light rain shower
21°C (68°F)
11:00
Overcast
22°C (71°F)
12:00
Patchy rain possible
24°C (75°F)
13:00
Patchy rain possible
26°C (78°F)
14:00
Partly cloudy
28°C (82°F)
15:00
Partly cloudy
29°C (83°F)
16:00
Cloudy
29°C (83°F)
17:00
Cloudy
28°C (81°F)
18:00
Overcast
27°C (80°F)
19:00
Clear
26°C (78°F)
20:00
Overcast
25°C (77°F)
21:00
Overcast
23°C (73°F)
22:00
Light rain shower
22°C (71°F)
23:00
Overcast
22°C (70°F)

Tomorrow - 16th September 2026

Sunrise 06:30

Sunrise

Sunset 19:00

Sunset
0:00
Patchy rain possible
21°C (69°F)
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