Measurements:
°C
°F
CURRENT WEATHER
07:57
Chicago
66°F
N 9 mph
Feels like: 66°F
Precip: 71%
World Resorts USA Chicago Weather

14 Day Weather Forecast

09.15
tue
DAY
74°F
N 11 mph
precip
61%
NIGHT
72°F
S 7 mph
precip
50%
09.16
wed
DAY
68°F
SW 10 mph
precip
64%
NIGHT
70°F
SE 4 mph
precip
68%
09.17
thu
DAY
74°F
SW 4 mph
precip
31%
NIGHT
70°F
SW 8 mph
precip
32%
09.18
fri
DAY
74°F
W 7 mph
precip
20%
NIGHT
68°F
NW 12 mph
precip
12%
09.19
sat
DAY
86°F
NE 11 mph
precip
3%
NIGHT
82°F
SE 7 mph
precip
6%
09.20
sun
DAY
74°F
SW 6 mph
precip
49%
NIGHT
68°F
SW 9 mph
precip
73%
09.21
mon
DAY
74°F
SE 4 mph
precip
23%
NIGHT
70°F
N 3 mph
precip
68%
09.22
tue
DAY
72°F
NE 7 mph
precip
26%
NIGHT
66°F
S 8 mph
precip
40%
09.23
wed
DAY
66°F
NW 7 mph
precip
20%
NIGHT
64°F
NE 3 mph
precip
21%
09.24
thu
DAY
74°F
NE 9 mph
precip
6%
NIGHT
62°F
S 17 mph
precip
2%
09.25
fri
DAY
62°F
S 9 mph
precip
1%
NIGHT
62°F
S 11 mph
precip
5%
09.26
sat
DAY
62°F
NW 11 mph
precip
3%
NIGHT
60°F
SW 16 mph
precip
8%
09.27
sun
DAY
56°F
SW 14 mph
precip
5%
NIGHT
56°F
W 11 mph
precip
4%
09.28
mon
DAY
58°F
W 7 mph
precip
4%
NIGHT
58°F
SW 9 mph
precip
40%

Chicago Sea Water Temperature in September, °F

Select Year: 2026 2025 2024

The average sea surface temperature in September 2026 for Chicago was 74.8°F. The maximum and minimum values were 70.2°F and 77.4°F respectively.

Chicago on the Weather Map

Best Time to Visit Chicago
The most sunny months:
September 17 days
June 16 days
July 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 67.9 °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
USA Resorts:
NAME
F°
Boston +62
Chicago +66
Hawaii +80
Las Vegas +80
Los Angeles +72
Maui +66
Miami +88
Myrtle Beach +78
New York +66
Panama City Beach +90
San Diego +70
San Francisco +60
Santa Monica +72
Sarasota +86
Washington +66
all resorts
24 Hours Weather Forecast
Chicago
Local time: 07:57
15 sep, tuesday
0900 66°F
N
9 mph
1200 74°F
N
11 mph
1500 84°F
E
7 mph
1800 80°F
S
2 mph
2100 76°F
SW
6 mph
16 sep, wednesday
0000 72°F
S
7 mph
0300 70°F
SW
11 mph
0600 70°F
SW
11 mph