For More Weather Information:

Chicago, IL Local Forecast Office

4NM ENE Chicago IL

Marine Point Forecast

[NOTICE]

Tonight
Low: 25 °F
NW 20kt
1-2ft

Small Craft Advisory
Sunday
High: 31 °F
NW 20kt
2-4ft

Small Craft Advisory
Sunday Night
Low: 22 °F
NNW 20kt
4-6ft

Small Craft Advisory
Monday
High: 30 °F
NNW 20kt
5-6ft

Small Craft Advisory
Monday Night
Low: 24 °F
NNW 10kt
2-4ft

Small Craft Advisory
Tuesday
High: 42 °F
SSW 15kt
1ft
Tuesday Night
Low: 32 °F
SSW 10kt
1ft
Wednesday
High: 43 °F
WNW 10kt
< 1ft
Wednesday Night
Low: 28 °F
WNW 10kt
< 1ft

High and low forecast temperature values represent air temperature.

Water temperature forecast is experimental.

Associated Zone Forecast which includes this point

Last Update: 9:16 pm CST Feb 21, 2026
Forecast Valid: 10pm CST Feb 21, 2026-6pm CST Feb 28, 2026

View Nearby Observations

Detailed Forecast

Tonight

NW wind 15 to 20 kt. Snow, mainly before 3am. Waves 1 to 2 ft.

Sunday

NW wind around 20 kt, with gusts as high as 25 kt. A chance of snow, mainly before 9am. Waves 2 to 4 ft.

Sunday Night

NNW wind around 20 kt, with gusts as high as 30 kt. A slight chance of snow. Widespread freezing spray after 1am. Waves 4 to 6 ft. occasionally to 8ft.

Monday

NNW wind 10 to 20 kt, with gusts as high as 30 kt. Widespread freezing spray before 11am. Partly sunny. Waves 5 to 6 ft. occasionally to 8ft.

Monday Night

NNW wind 5 to 10 kt becoming SSW after midnight. Mostly cloudy. Waves 2 to 4 ft.

Tuesday

SSW wind 10 to 15 kt, with gusts as high as 20 kt. A slight chance of snow after noon. Waves around 1 ft.

Tuesday Night

SSW wind around 10 kt becoming W after midnight. Winds could gust as high as 20 kt. A slight chance of rain before midnight. Waves around 1 ft.

Wednesday

WNW wind around 10 kt. Partly sunny. Waves 1 ft or less.

Wednesday Night

WNW wind around 10 kt, with gusts as high as 15 kt. A chance of rain before midnight, then a chance of rain and snow. 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.