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Chicago, IL Local Forecast Office

17NM ENE Chicago IL

Marine Point Forecast

[NOTICE]

Thursday
High: 57 °F
S 25kt
3-5ft

Gale Warning
Thursday Night
Low: 43 °F
S 25kt
5ft

Gale Warning
Friday
High: 49 °F
W 10kt
< 1ft
Friday Night
Low: 43 °F
S 15kt
1-2ft
Saturday
High: 56 °F
WSW 15kt
2ft
Saturday Night
Low: 38 °F
W 20kt
3ft
Sunday
High: 46 °F
WNW 20kt⇓
4ft
Sunday Night
Low: 40 °F
W 15kt
1ft
Monday
High: 47 °F
WNW 15kt
1-2ft

High and low forecast temperature values represent air temperature.

Water temperature forecast is experimental.

Associated Zone Forecast which includes this point

Last Update: 3:33 am CDT Apr 2, 2026
Forecast Valid: 3am CDT Apr 2, 2026-6pm CDT Apr 8, 2026

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Detailed Forecast

Thursday

E wind 15 to 25 kt becoming S in the afternoon. Winds could gust as high as 30 kt. Showers and thunderstorms, mainly before noon, then showers and possibly a thunderstorm after 2pm. Waves 3 to 5 ft.

Thursday Night

S wind 15 to 25 kt becoming WSW after midnight. Winds could gust as high as 30 kt. Showers and thunderstorms likely before 1am, then a slight chance of rain between 1am and 3am. Waves 5 ft subsiding to 2 ft.

Friday

W wind 5 to 10 kt becoming NE in the afternoon. Partly sunny. Waves 1 ft or less.

Friday Night

NE wind 10 to 15 kt becoming S after midnight. Showers and possibly a thunderstorm. Waves 1 to 2 ft.

Saturday

S wind around 15 kt becoming WSW in the afternoon. Winds could gust as high as 20 kt. A chance of showers and thunderstorms. Waves around 2 ft.

Saturday Night

W wind around 20 kt. Mostly cloudy. Waves around 3 ft.

Sunday

WNW wind 15 to 20 kt decreasing to 10 to 15 kt in the afternoon. Partly sunny. Waves 4 ft subsiding to 1 ft.

Sunday Night

NW wind 5 to 15 kt becoming W in the evening. Mostly clear. Waves around 1 ft.

Monday

WNW wind 5 to 15 kt becoming N in the afternoon. Mostly sunny. Waves 1 to 2 ft.

*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.