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Chicago, IL Local Forecast Office

4NM ENE Chicago IL

Marine Point Forecast

[NOTICE]

Sunday
High: 34 °F
NW 25kt⇓
2-3ft

Small Craft Advisory
Sunday Night
Low: 29 °F
SW 15kt
1-2ft
Monday
High: 41 °F
WSW 15kt
< 1ft
Monday Night
Low: 35 °F
SSW 10kt
< 1ft
Tuesday
High: 49 °F
SW 15kt
1ft
Tuesday Night
Low: 32 °F
NW 15kt
1ft
Wednesday
High: 35 °F
NNW 20kt
8ft
Wednesday Night
Low: 21 °F
N 20kt
6-8ft
Thursday
High: 29 °F
N 15kt
5ft

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 CST Jan 11, 2026
Forecast Valid: 3am CST Jan 11, 2026-6pm CST Jan 17, 2026

View Nearby Observations

Detailed Forecast

Sunday

NW wind 20 to 25 kt decreasing to 10 to 15 kt in the afternoon. Winds could gust as high as 30 kt. Scattered snow showers before 9am. Waves 2 to 3 ft.

Sunday Night

SW wind 10 to 15 kt, with gusts as high as 25 kt. Partly cloudy. Waves 1 to 2 ft.

Monday

WSW wind 10 to 15 kt, with gusts as high as 20 kt. Mostly sunny. Waves 1 ft or less.

Monday Night

SSW wind around 10 kt, with gusts as high as 15 kt. Increasing clouds. Waves 1 ft or less.

Tuesday

SW wind 10 to 15 kt, with gusts as high as 25 kt. A chance of showers, mainly before noon. Waves around 1 ft.

Tuesday Night

WSW wind 10 to 15 kt becoming NW after midnight. Winds could gust as high as 20 kt. A slight chance of rain and snow showers after 3am. Waves around 1 ft.

Wednesday

NNW wind 15 to 20 kt, with gusts as high as 30 kt. Snow showers likely. Waves 1 ft building to 8 ft.

Wednesday Night

N wind 15 to 20 kt, with gusts as high as 30 kt. A chance of snow showers. Waves 6 to 8 ft. occasionally to 10ft.

Thursday

N wind 10 to 15 kt becoming WSW in the afternoon. Partly sunny. Waves 5 ft subsiding 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.