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4NM ENE Chicago IL

[NOTICE]

High and low forecast temperature values represent air temperature.

Water temperature forecast is experimental.

Last Update: 9:21 am CDT Mar 20, 2026
Forecast Valid: 9am CDT Mar 20, 2026-6pm CDT Mar 26, 2026

Today

WSW wind around 10 kt becoming NNE in the afternoon. Winds could gust as high as 20 kt. Partly sunny. Waves around 1 ft.

Tonight

N wind 5 to 10 kt becoming ENE after midnight. Winds could gust as high as 15 kt. Mostly cloudy. Waves around 1 ft.

Saturday

E wind 5 to 10 kt becoming S in the afternoon. Winds could gust as high as 15 kt. Mostly cloudy, then gradually becoming sunny. Waves around 1 ft.

Saturday Night

SW wind around 10 kt, with gusts as high as 15 kt. Partly cloudy. Waves 1 ft or less.

Sunday

WSW wind 10 to 20 kt becoming N in the afternoon. A chance of showers. Waves 1 ft building to 5 ft.

Sunday Night

N wind 15 to 20 kt. Mostly cloudy. Waves 5 to 6 ft. occasionally to 8ft.

Monday

N wind 10 to 15 kt. Mostly sunny. Waves 2 to 4 ft.

Monday Night

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

Tuesday

SW wind 5 to 10 kt. Mostly cloudy. 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.