Measurements:
°C
°F
Evanston
10°F
SE 7 mph
Feels like: -2°F
Precip: 0%
World Resorts USA Evanston Weather

Evanston Sea Water Temperature

Current Sea Water Temperature:
+31.8°F
Maximum Sea Water Temperature in January: 39.6°F
Minimum Sea Water Temperature in January: 31.8°F
Average water temperature in January: 34.6°F

Sea Water Temperature for the Last 10 Days:

January 29 31.8°F January 24 34.2°F
January 28 32.0°F January 23 34.2°F
January 27 32.2°F January 22 34.8°F
January 26 33.8°F January 21 34.4°F
January 25 34.0°F January 20 34.0°F

When is the Warmest Sea for Evanston?

According to our data for the last three years for Evanston the highest average sea water temperature was in August, July and September.

Average Water Temperature by Month, °F

Sea Water Temperature in August

Select Year: 2025 2024 2023

The average sea surface temperature in August 2025 for Evanston was 76.5°F. The maximum and minimum values were 72.6°F and 79.4°F respectively.

Sea Water Temperature in July

Select Year: 2025 2024 2023

The average sea surface temperature in July 2025 for Evanston was 75.5°F. The maximum and minimum values were 72.6°F and 80.0°F respectively.

Sea Water Temperature in September

Select Year: 2025 2024 2023

The average sea surface temperature in September 2025 for Evanston was 71.7°F. The maximum and minimum values were 68.2°F and 74.4°F respectively.

Best Time to Visit Evanston
The most sunny months:
August 17 days
September 17 days
June 15 days
The most warm months:
August 82.9 °F
July 82.9 °F
June 78.2 °F
Warmest sea temperature:
August 75.8 °F
July 73.7 °F
September 71.5 °F
The most cold months:
January 26.2 °F
February 29.3 °F
December 34.2 °F
The most rainy months:
April 3 days
May 3 days
October 2 days
The most windy months:
November 11 mph
March 10 mph
January 10 mph

Evanston on the Weather Map

USA Resorts:
NAME
Chicago +16
Hawaii +74
Honolulu +74
Houston +62
Las Vegas +48
Los Angeles +56
Maui +68
Miami +64
Miami Beach +70
New York +12
San Diego +58
San Francisco +50
Sarasota +58
Tampa +60
Washington +12
24 Hours Weather Forecast
Evanston
Local time: 10:51
29 jan, thursday
1200 10°F
SE
7 mph
1500 18°F
SE
6 mph
1800 14°F
SE
6 mph
2100 6°F
SE
7 mph
30 jan, friday
0000 2°F
SE
8 mph
0300 2°F
SE
9 mph
0600 4°F
SE
9 mph
0900 4°F
S
6 mph