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Chicago, IL Local Forecast Office

4NM ENE Chicago IL

Marine Point Forecast

[NOTICE]

Overnight
Low: 20 °C
WNW 15km/h
< 1m
Sunday
High: 28 °C
WNW 10km/h
< 1m
Sunday Night
Low: 21 °C
E 10km/h
< 1m
Monday
High: 32 °C
S 15km/h
< 1m
Monday Night
Low: 23 °C
S 10km/h
< 1m
Tuesday
High: 29 °C
SSE 15km/h
< 1m
Tuesday Night
Low: 24 °C
SSE 15km/h
< 1m
Wednesday
High: 29 °C
W 20km/h
< 1m
Wednesday Night
Low: 22 °C
NNW 20km/h
< 1m

High and low forecast temperature values represent air temperature.

Water temperature forecast is experimental.

Associated Zone Forecast which includes this point

Last Update: 7:41 pm CDT Jul 12, 2025
Forecast Valid: 12am CDT Jul 13, 2025-6pm CDT Jul 19, 2025

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Detailed Forecast

Overnight

WNW wind 10 to 15 km/h. Mostly clear. Waves 1 m or less.

Sunday

WNW wind around 10 km/h becoming E in the afternoon. Mostly sunny. Waves 1 m or less.

Sunday Night

E wind around 10 km/h becoming SW in the evening. Mostly clear. Waves 1 m or less.

Monday

S wind 10 to 15 km/h. Sunny. Waves 1 m or less.

Monday Night

S wind around 10 km/h. Mostly clear. Waves 1 m or less.

Tuesday

SSE wind 10 to 15 km/h, with gusts as high as 25 km/h. A slight chance of showers and thunderstorms after 1pm. Waves 1 m or less.

Tuesday Night

SSE wind 10 to 15 km/h becoming SSW after midnight. A chance of showers and thunderstorms, mainly after 1am. Waves 1 m or less.

Wednesday

SSW wind 15 to 20 km/h becoming NNW in the afternoon. Winds could gust as high as 25 km/h. A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm. Waves 1 m or less.

Wednesday Night

NNW wind 15 to 20 km/h becoming SW after midnight. Winds could gust as high as 25 km/h. A chance of showers and thunderstorms. Waves 1 m or less.

*Notices:

This forecast is for a single location. For safety concerns, mariners should be aware of the weather over a larger area. Forecast information for a larger area can be found within the zone forecast and the NDFD graphics.
The forecast conditions at a particular point may not exceed the criteria of a Small Craft Advisory, Gale, Storm etc. These watches/warnings/advisories are issued for the entire zone in which the point resides and mariners should act accordingly.