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Chicago, IL Local Forecast Office

4NM ENE Chicago IL

Marine Point Forecast

[NOTICE]

Today
High: 79 °F
SSE 10kt
< 1ft
Tonight
Low: 69 °F
SSW 10kt
< 1ft
Saturday
High: 77 °F
NNW 10kt
1-2ft
Saturday Night
Low: 67 °F
NNW 10kt
1-2ft
Sunday
High: 72 °F
NNW 10kt
2-3ft
Sunday Night
Low: 65 °F
Light Wind
1-2ft
Monday
High: 72 °F
Light Wind
1ft
Monday Night
Low: 65 °F
Light Wind
< 1ft
Tuesday
High: 78 °F
Light Wind
< 1ft

High and low forecast temperature values represent air temperature.

Water temperature forecast is experimental.

Associated Zone Forecast which includes this point

Last Update: 10:31 am CDT Aug 21, 2026
Forecast Valid: 11am CDT Aug 21, 2026-6pm CDT Aug 27, 2026

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Detailed Forecast

Today

SSW wind 5 to 10 kt becoming SSE in the afternoon. A chance of showers, with thunderstorms also possible after noon. Waves 1 ft or less.

Tonight

SSW wind 5 to 10 kt becoming W after midnight. Showers and thunderstorms likely, mainly before 1am. Waves 1 ft or less.

Saturday

NW wind around 10 kt becoming N in the afternoon. Winds could gust as high as 20 kt. A slight chance of showers and thunderstorms after 2pm. Waves 1 to 2 ft.

Saturday Night

NNW wind around 10 kt. Mostly clear. Waves 1 to 2 ft.

Sunday

NNW wind around 10 kt. Sunny. Waves 2 to 3 ft.

Sunday Night

Variable winds 5 kt or less. Partly cloudy. Waves 1 to 2 ft.

Monday

Variable winds 5 kt or less. Mostly sunny. Waves around 1 ft.

Monday Night

Variable winds 5 kt or less. Partly cloudy. Waves 1 ft or less.

Tuesday

Variable winds 5 kt or less. Mostly sunny. Waves 1 ft 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.