Measurements:
°C
°F
CURRENT WEATHER
18:48
Chicago
62°F
W 9 mph
Feels like: 62°F
Precip: 4%
World Resorts USA Chicago Weather

7 Day Weather Forecast

10.05
mon
DAY
64°F
SW 7 mph
precip
3%
NIGHT
58°F
NW 8 mph
precip
4%
10.06
tue
DAY
68°F
N 12 mph
precip
1%
NIGHT
66°F
NE 12 mph
precip
1%
10.07
wed
DAY
74°F
E 7 mph
precip
11%
NIGHT
68°F
SE 8 mph
precip
3%
10.08
thu
DAY
66°F
S 9 mph
precip
1%
NIGHT
62°F
NE 6 mph
precip
11%
10.09
fri
DAY
70°F
N 4 mph
precip
4%
NIGHT
64°F
NW 8 mph
precip
20%
10.10
sat
DAY
72°F
N 11 mph
precip
10%
NIGHT
68°F
N 9 mph
precip
12%
10.11
sun
DAY
64°F
W 7 mph
precip
23%
NIGHT
64°F
E 4 mph
precip
9%

Chicago Sea Water Temperature in October, °F

Select Year: 2025 2024 2023

The average sea surface temperature in October 2025 for Chicago was 12.3°F. The maximum and minimum values were 1.8°F and 16.8°F respectively.

Chicago on the Weather Map

Best Time to Visit Chicago
The most sunny months:
June 16 days
July 16 days
August 16 days
The most warm months:
July 83.5 °F
August 82.9 °F
June 76.6 °F
Warmest sea temperature:
August 72.7 °F
July 70.5 °F
September 68.0 °F
The most cold months:
January 25.6 °F
February 29.0 °F
December 34.1 °F
The most rainy months:
June 6 days
May 6 days
July 5 days
The most windy months:
November 12 mph
January 12 mph
February 11 mph
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