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Chicago, IL Local Forecast Office

4NM ENE Chicago IL

Marine Point Forecast

[NOTICE]

This Afternoon
High: 37 °F
N 25kt
8-9ft

Gale Warning
Tonight
Low: 31 °F
N 25kt
9ft

Gale Warning
Monday
High: 36 °F
N 15kt
5ft
Monday Night
Low: 34 °F
Light Wind
1-2ft
Tuesday
High: 53 °F
SSW 10kt
< 1ft
Tuesday Night
Low: 42 °F
SSE 10kt
< 1ft
Wednesday
High: 53 °F
SE 10kt
1ft
Wednesday Night
Low: 46 °F
E 10kt
1ft
Thursday
High: 62 °F
S 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: 8:51 am CDT Mar 22, 2026
Forecast Valid: 1pm CDT Mar 22, 2026-6pm CDT Mar 28, 2026

View Nearby Observations

Detailed Forecast

This Afternoon

N wind around 25 kt, with gusts as high as 35 kt. A chance of showers, mainly after 4pm. Patchy fog before 4pm. Waves 8 to 9 ft. occasionally to 12ft.

Tonight

N wind 15 to 25 kt, with gusts as high as 30 kt. A slight chance of showers before 7pm. Waves 9 ft subsiding to 6 ft.

Monday

N wind 5 to 15 kt. Mostly cloudy, then gradually becoming sunny. Waves 5 ft subsiding to 2 ft.

Monday Night

Variable winds 5 kt or less. Mostly cloudy. Waves 1 to 2 ft.

Tuesday

SSW wind 5 to 10 kt. Mostly cloudy. Waves 1 ft or less.

Tuesday Night

SSE wind 5 to 10 kt. Mostly cloudy. Waves 1 ft or less.

Wednesday

SE wind around 10 kt. A slight chance of showers before 1pm. Waves around 1 ft.

Wednesday Night

E wind around 10 kt becoming S after midnight. Mostly cloudy. Waves around 1 ft.

Thursday

S wind around 10 kt becoming NNW in the afternoon. A chance of showers. 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.