Measurements:
°C
°F
CURRENT WEATHER
20:57
Chicago
58°F
S 9 mph
Feels like: 54°F
Precip: 22%
World Resorts USA Chicago Weather

7 Day Weather Forecast

10.26
mon
DAY
60°F
S 11 mph
precip
16%
NIGHT
58°F
S 6 mph
precip
19%
10.27
tue
DAY
64°F
N 7 mph
precip
13%
NIGHT
62°F
N 6 mph
precip
14%
10.28
wed
DAY
68°F
N 7 mph
precip
4%
NIGHT
64°F
N 11 mph
precip
3%
10.29
thu
DAY
68°F
NE 9 mph
precip
46%
NIGHT
60°F
S 8 mph
precip
14%
10.30
fri
DAY
60°F
W 9 mph
precip
13%
NIGHT
60°F
W 5 mph
precip
85%
10.31
sat
DAY
64°F
W 4 mph
precip
27%
NIGHT
60°F
NW 6 mph
precip
49%
11.01
sun
DAY
66°F
NW 1 mph
precip
21%
NIGHT
60°F
E 2 mph
precip
25%

Chicago Sea Water Temperature in October, °F

Select Year: 2026 2025 2024

The average sea surface temperature in October 2026 for Chicago was 16.6°F. The maximum and minimum values were 14.4°F and 17.9°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
more details