Chicago Weather Year-Round — Best Time to Visit
Chicago, United States has cool weather year-round. The best time to visit is September (score: 84/100). Annual average high: 14°C, total rainfall: 989mm.
When is the best time to visit Chicago?
84
September is the best month to visit Chicago with a travel score of 84/100 (Excellent).
Expect highs of 23.1°C, 8 rain days, and 9.9 hours of daily sunshine.
View September weather details →Travel Score by Month
38
Jan
46
Feb
54
Mar
61
Apr
72
May
80
Jun
82
Jul
82
Aug
84
Sep
68
Oct
56
Nov
44
Dec
Excellent (80+)
Good (60-79)
Mixed (40-59)
Poor (<40)
What are the average temperatures in Chicago each month?
14°C
Avg High
6.8°C
Avg Low
989mm
Annual Rain
How much rain does Chicago get?
Chicago receives 989mm of rain annually. The wettest month is typically May with 114mm, while February is the driest.
What is the weather like each month in Chicago?
January
38
-1°C
Low: -7°C
9 rain days
Poor
February
46
1°C
Low: -7°C
7 rain days
Mixed
March
54
7°C
Low: -1°C
10 rain days
Mixed
April
61
13°C
Low: 5°C
12 rain days
Good
May
72
19°C
Low: 11°C
12 rain days
Good
June
80
25°C
Low: 17°C
12 rain days
Excellent
July
82
27°C
Low: 20°C
11 rain days
Excellent
August
82
27°C
Low: 20°C
11 rain days
Excellent
September
Best time to visit84
23°C
Low: 16°C
8 rain days
Excellent
October
68
16°C
Low: 9°C
10 rain days
Good
November
56
9°C
Low: 2°C
8 rain days
Mixed
December
44
3°C
Low: -3°C
9 rain days
Mixed
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Data based on 1994–2024 averages · Last updated: 2024-12-31