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Chicago, IL Local Forecast Office

17NM ENE Chicago IL

Marine Point Forecast

[NOTICE]

This Afternoon
High: 35 °F
NW 20kt
7ft

Gale Warning
Tonight
Low: 35 °F
NW 20kt
5-7ft

Gale Warning
Thursday
High: 44 °F
WNW 10kt
1-3ft
Thursday Night
Low: 41 °F
⇑S 30kt
8ft
Friday
High: 47 °F
W 30kt
6-7ft
Friday Night
Low: 34 °F
NW 20kt
3-4ft
Saturday
High: 38 °F
NNW 10kt
1-2ft
Saturday Night
Low: 36 °F
⇑E 20kt
5ft
Sunday
High: 48 °F
NNE 30kt
5-6ft

High and low forecast temperature values represent air temperature.

Water temperature forecast is experimental.

Associated Zone Forecast which includes this point

Last Update: 4:34 pm CDT Mar 11, 2026
Forecast Valid: 4pm CDT Mar 11, 2026-6pm CDT Mar 18, 2026

View Nearby Observations

Detailed Forecast

This Afternoon

NW wind around 20 kt, with gusts as high as 25 kt. Snow. Waves around 7 ft.

Tonight

NW wind 15 to 20 kt, with gusts as high as 30 kt. A chance of snow, possibly mixing with rain after 7pm, then gradually ending. Waves 5 to 7 ft. occasionally to 9ft.

Thursday

WNW wind 5 to 10 kt becoming S in the afternoon. Sunny. Waves 1 to 3 ft.

Thursday Night

S wind 15 to 20 kt increasing to 25 to 30 kt after midnight. Winds could gust as high as 40 kt. Rain likely, mainly after 1am. Waves 1 ft building to 8 ft.

Friday

W wind 25 to 30 kt, with gusts as high as 40 kt. Partly sunny. Waves 6 to 7 ft. occasionally to 9ft.

Friday Night

NW wind 15 to 20 kt. Mostly cloudy. Waves 3 to 4 ft.

Saturday

NNW wind 5 to 10 kt becoming ESE in the afternoon. Mostly cloudy. Waves 1 to 2 ft.

Saturday Night

E wind 10 to 15 kt increasing to 15 to 20 kt after midnight. Rain and snow likely, mainly after 1am. Waves 1 ft building to 5 ft.

Sunday

ESE wind 25 to 30 kt becoming NNE in the afternoon. Rain. Waves 5 to 6 ft. occasionally to 8ft.

*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.