For More Weather Information:

Chicago, IL Local Forecast Office

17NM ENE Chicago IL

Marine Point Forecast

[NOTICE]

Tonight
Low: 25 °F
⇑NW 20kt
4ft
Sunday
High: 31 °F
NW 25kt
7ft
Sunday Night
Low: 27 °F
NNW 30kt
11ft
Monday
High: 30 °F
NNW 30kt⇓
11ft
Monday Night
Low: 26 °F
NNW 15kt
7ft
Tuesday
High: 41 °F
SSW 20kt
2ft
Tuesday Night
Low: 34 °F
SW 20kt
2-3ft
Wednesday
High: 40 °F
WNW 15kt
1-3ft
Wednesday Night
Low: 30 °F
WNW 20kt
5ft

High and low forecast temperature values represent air temperature.

Water temperature forecast is experimental.

Associated Zone Forecast which includes this point

Last Update: 5:37 pm CST Feb 21, 2026
Forecast Valid: 6pm CST Feb 21, 2026-6pm CST Feb 28, 2026

View Nearby Observations

Detailed Forecast

Tonight

NW wind 10 to 15 kt increasing to 15 to 20 kt after midnight. Snow likely, mainly after 5am. Waves 1 ft building to 4 ft.

Sunday

NW wind 20 to 25 kt. A chance of snow. Waves 4 ft building to 7 ft.

Sunday Night

NNW wind 25 to 30 kt. A chance of snow. Widespread freezing spray after 5am. Waves 8 ft building to 11 ft.

Monday

NNW wind 25 to 30 kt decreasing to 15 to 20 kt in the afternoon. A chance of snow showers before noon. Widespread freezing spray before 10am. Waves 11 ft subsiding to 8 ft.

Monday Night

NNW wind 5 to 15 kt becoming SW after midnight. Mostly cloudy. Waves 7 ft subsiding to 3 ft.

Tuesday

SSW wind 15 to 20 kt. A chance of snow, mainly after noon. Waves around 2 ft.

Tuesday Night

SSW wind 15 to 20 kt becoming WNW after midnight. A slight chance of rain and snow before midnight. Waves 2 to 3 ft.

Wednesday

WNW wind 10 to 15 kt. Partly sunny. Waves 1 to 3 ft.

Wednesday Night

WNW wind 10 to 20 kt. A chance of rain before midnight, then a chance of rain and snow. Waves 2 ft building 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.