Current sea water temperature:
+39.7°F
| Minimum sea water temperature in December: | 46.4°F |
| Maximum sea water temperature in December: | 34.5°F |
| Average sea water temperature in December: | 41.3°F |
| more information | |
14 days
forecast
forecast
| Evanston |
monthly
weather
weather
| Evanston |
Sea water temperature for the last 10 days:
| December 14 | 39.7°F | December 9 | 40.8°F |
| December 13 | 39.4°F | December 8 | 41.2°F |
| December 12 | 39.7°F | December 7 | 41.4°F |
| December 11 | 39.6°F | December 6 | 42.1°F |
| December 10 | 39.9°F | December 5 | 42.1°F |
Monthly sea water temperature, °F
When is the warmest sea in Evanston?
Based on the data about daily sea water temperature for the last three years the warmest sea in Evanston was noticed in August, July and September.
Monthly Sea Temperatures in Evanston, °F
Sea water temperature in August, °F
Show year:
2025
2024
2023
The average sea water temperature in August of 2025 was 73.9°F. The highest and lowest sea temperatures during the month were 76.5°F and 70.3°F.
Sea water temperature in July, °F
Show year:
2025
2024
2023
The average sea water temperature in July of 2025 was 73.0°F. The highest and lowest sea temperatures during the month were 77.0°F and 70.3°F.
Sea water temperature in September, °F
Show year:
2025
2024
2023
The average sea water temperature in September of 2025 was 69.6°F. The highest and lowest sea temperatures during the month were 72.0°F and 66.4°F.
current
weather
weather
| Evanston |
weather in
December
December
| Evanston |
Best time for vacation in Evanston
Evanston on a weather map
Places in USA:
Name
°F
24 Hours Forecast
Evanston
Local time: 00:44
December 15, monday
0300
3°F
NE
14 mph
14 mph
0600
7°F
NE
16 mph
16 mph
0900
12°F
NE
18 mph
18 mph
1200
18°F
NE
17 mph
17 mph
1500
23°F
NE
12 mph
12 mph
1800
23°F
NE
10 mph
10 mph
2100
23°F
NE
7 mph
7 mph
December 16, tuesday
0000
23°F
NE
6 mph
6 mph
