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Chicago, IL Local Forecast Office

4NM ENE Chicago IL

Marine Point Forecast

[NOTICE]

Today
High: 44 °F
W 30kt
3-4ft

Storm Warning
Tonight
Low: 33 °F
WNW 20kt⇓
1-2ft

Gale Warning
Saturday
High: 40 °F
E 10kt
1-2ft
Saturday Night
Low: 38 °F
E 15kt
4ft
Sunday
High: 58 °F
S 20kt
4-5ft
Sunday Night
Low: 24 °F
NNW 25kt
11ft
Monday
High: 31 °F
WNW 30kt
11ft
Monday Night
Low: 14 °F
WNW 20kt
3-5ft
Tuesday
High: 27 °F
W 15kt
1-3ft

High and low forecast temperature values represent air temperature.

Water temperature forecast is experimental.

Associated Zone Forecast which includes this point

Last Update: 3:41 am CDT Mar 13, 2026
Forecast Valid: 7am CDT Mar 13, 2026-6pm CDT Mar 19, 2026

View Nearby Observations

Detailed Forecast

Today

SW wind 25 to 30 kt becoming WNW in the afternoon. Winds could gust as high as 50 kt. A slight chance of rain and snow showers before 10am. Waves 3 to 4 ft.

Tonight

WNW wind 15 to 20 kt becoming N 5 to 10 kt after midnight. Winds could gust as high as 30 kt. Partly cloudy. Waves 1 to 2 ft.

Saturday

NNE wind 5 to 10 kt becoming SE in the afternoon. A slight chance of snow showers before 4pm, then a slight chance of rain and snow showers. Waves 1 to 2 ft.

Saturday Night

E wind 10 to 15 kt, with gusts as high as 20 kt. Rain showers likely, mainly after 1am. Waves 1 ft building to 4 ft.

Sunday

ESE wind 15 to 20 kt becoming S in the afternoon. Winds could gust as high as 30 kt. A chance of showers before 1pm, then showers and possibly a thunderstorm between 1pm and 4pm, then showers after 4pm. Waves 4 to 5 ft.

Sunday Night

SSW wind 20 to 25 kt becoming NNW after midnight. Winds could gust as high as 35 kt. Rain showers before 1am, then snow showers, possibly mixed with rain between 1am and 4am, then snow showers after 4am. Waves 2 ft building to 11 ft.

Monday

WNW wind 25 to 30 kt, with gusts as high as 40 kt. Snow showers, mainly before 1pm. Widespread freezing spray before 11am, then Widespread freezing spray after 3pm. Waves 11 ft subsiding to 7 ft.

Monday Night

WNW wind around 20 kt, with gusts as high as 30 kt. A chance of snow showers. Widespread freezing spray before 10pm. Waves 3 to 5 ft.

Tuesday

W wind 10 to 15 kt. Mostly sunny. Waves 1 to 3 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.