For More Weather Information:

4NM ENE Chicago IL

[NOTICE]

High and low forecast temperature values represent air temperature.

Water temperature forecast is experimental.

Last Update: 3:50 am CDT Mar 28, 2026
Forecast Valid: 9am CDT Mar 28, 2026-6pm CDT Apr 3, 2026

Today

WNW wind 5 to 10 kt becoming S in the afternoon. Winds could gust as high as 15 kt. Sunny. Waves around 1 ft.

Tonight

SSW wind 10 to 15 kt. Mostly cloudy. Waves around 1 ft.

Sunday

SSW wind 10 to 15 kt. Partly sunny. Waves around 1 ft.

Sunday Night

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

Monday

S wind around 10 kt, with gusts as high as 20 kt. Mostly sunny. Waves 1 ft or less.

Monday Night

SSW wind 10 to 20 kt. A chance of showers and thunderstorms. Waves 1 to 2 ft.

Tuesday

SSW wind 15 to 20 kt, with gusts as high as 25 kt. A chance of showers, then showers and possibly a thunderstorm after 1pm. Waves around 1 ft.

Tuesday Night

WNW wind 15 to 20 kt becoming N after midnight. Showers likely, mainly before 1am. Waves 1 to 2 ft.

Wednesday

NNE wind around 20 kt. Mostly cloudy. Waves 3 ft building to 7 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.