Current sea water temperature:
+63.7°F
| Minimum sea water temperature in October: | 69.1°F |
| Maximum sea water temperature in October: | 32.0°F |
| Average sea water temperature in October: | 57.0°F |
| more information | |
14 days
forecast
forecast
| Chicago |
monthly
weather
weather
| Chicago |
Sea water temperature for the last 10 days:
| October 4 | 63.7°F | September 29 | 63.7°F |
| October 3 | 63.9°F | September 28 | 63.7°F |
| October 2 | 64.0°F | September 27 | 63.5°F |
| October 1 | 64.0°F | September 26 | 63.3°F |
| September 30 | 64.0°F | September 25 | 63.7°F |
Monthly sea water temperature, °F
When is the warmest sea in Chicago?
Based on the data about daily sea water temperature for the last three years the warmest sea in Chicago was noticed in August, July and September.
Monthly Sea Temperatures in Chicago, °F
Sea water temperature in August, °F
Show year:
2026
2025
2024
The average sea water temperature in August of 2026 was 72.7°F. The highest and lowest sea temperatures during the month were 74.3°F and 68.5°F.
Sea water temperature in July, °F
Show year:
2026
2025
2024
The average sea water temperature in July of 2026 was 72.8°F. The highest and lowest sea temperatures during the month were 78.8°F and 66.0°F.
Sea water temperature in September, °F
Show year:
2026
2025
2024
The average sea water temperature in September of 2026 was 68.5°F. The highest and lowest sea temperatures during the month were 74.7°F and 63.3°F.
current
weather
weather
| Chicago |
weather in
October
October
| Chicago |
Best time for vacation in Chicago
Chicago on a weather map
Places in USA:
Name
°F
24 Hours Forecast
Chicago
Local time: 20:53
October 04, sunday
2100
64°F
SE
7 mph
7 mph
October 05, monday
0000
61°F
E
7 mph
7 mph
0300
59°F
SE
8 mph
8 mph
0600
57°F
SE
8 mph
8 mph
0900
59°F
S
9 mph
9 mph
1200
63°F
SW
7 mph
7 mph
1500
63°F
SW
9 mph
9 mph
1800
61°F
W
8 mph
8 mph
