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Chicago, IL Local Forecast Office

4NM ENE Chicago IL

Marine Point Forecast

[NOTICE]

Thursday
High: 46 °F
W 10kt
1ft
Thursday Night
Low: 37 °F
⇑SW 25kt
4ft

Gale Warning
Friday
High: 46 °F
W 30kt
3-4ft

Gale Warning
Friday Night
Low: 33 °F
WNW 15kt
1-2ft

Gale Warning
Saturday
High: 41 °F
E 10kt
1ft
Saturday Night
Low: 36 °F
E 20kt
4ft
Sunday
High: 52 °F
ESE 20kt
5ft
Sunday Night
Low: 22 °F
NW 30kt
9ft
Monday
High: 27 °F
WNW 25kt
9ft

High and low forecast temperature values represent air temperature.

Water temperature forecast is experimental.

Associated Zone Forecast which includes this point

Last Update: 3:11 am CDT Mar 12, 2026
Forecast Valid: 4am CDT Mar 12, 2026-6pm CDT Mar 18, 2026

View Nearby Observations

Detailed Forecast

Thursday

W wind around 10 kt becoming SW in the afternoon. Winds could gust as high as 15 kt. Increasing clouds. Waves around 1 ft.

Thursday Night

S wind 10 to 15 kt becoming SW 20 to 25 kt after midnight. Winds could gust as high as 45 kt. Showers likely, mainly before 3am. Waves 1 ft building to 4 ft.

Friday

W wind 25 to 30 kt, with gusts as high as 50 kt. Partly sunny. Waves 3 to 4 ft.

Friday Night

WNW wind 5 to 15 kt becoming NNW after midnight. Winds could gust as high as 30 kt. Mostly cloudy. Waves 1 to 2 ft.

Saturday

N wind 5 to 10 kt becoming ESE in the afternoon. A slight chance of snow showers after 1pm. Waves around 1 ft.

Saturday Night

E wind 10 to 20 kt. Rain and snow showers likely, becoming all rain after 4am. Waves 1 ft building to 4 ft.

Sunday

ESE wind around 20 kt becoming SSW in the afternoon. Winds could gust as high as 30 kt. Showers, with thunderstorms also possible after 1pm. Waves 5 ft subsiding to 2 ft.

Sunday Night

NW wind 20 to 30 kt. Rain and snow showers, becoming all snow after 1am. Waves 3 ft building to 9 ft.

Monday

WNW wind 20 to 25 kt, with gusts as high as 35 kt. A chance of snow. Waves 9 ft subsiding to 5 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.