Measurements:
°C
°F
Evanston
42°F
E 27 mph
Feels like: 30°F
Precip: 0%
World Resorts USA Evanston Weather

Evanston Sea Water Temperature

Current Sea Water Temperature:
+37.2°F
Maximum Sea Water Temperature in March: 41.6°F
Minimum Sea Water Temperature in March: 30.0°F
Average water temperature in March: 35.6°F

Sea Water Temperature for the Last 10 Days:

March 13 37.2°F March 08 35.2°F
March 12 37.8°F March 07 34.0°F
March 11 36.4°F March 06 33.0°F
March 10 37.2°F March 05 32.4°F
March 09 34.8°F March 04 31.8°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 26.1 °F
February 30.3 °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 +42
Hawaii +76
Honolulu +76
Houston +82
Las Vegas +96
Los Angeles +100
Maui +70
Miami +84
Miami Beach +82
New York +42
San Diego +94
San Francisco +72
Sarasota +80
Tampa +80
Washington +56
24 Hours Weather Forecast
Evanston
Local time: 16:00
13 mar, friday
1800 40°F
E
25 mph
2100 32°F
SE
20 mph
14 mar, saturday
0000 30°F
SE
14 mph
0300 28°F
SE
11 mph
0600 26°F
S
6 mph
0900 28°F
SW
4 mph
1200 30°F
W
6 mph
1500 30°F
W
8 mph