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: 8:46 am CDT Mar 16, 2026
Forecast Valid: 8am CDT Mar 16, 2026-6pm CDT Mar 22, 2026

Today

NW wind around 25 kt, with gusts as high as 35 kt. Snow showers, mainly before 1pm. Widespread freezing spray. Waves 6 to 8 ft. occasionally to 10ft.

Tonight

NW wind 20 to 25 kt. A slight chance of snow showers before 2am. Widespread freezing spray before 11pm. Waves 3 to 5 ft.

Tuesday

WNW wind 10 to 15 kt becoming WSW in the afternoon. Mostly sunny. Waves 1 to 3 ft.

Tuesday Night

S wind 10 to 15 kt. Snow, mainly after 1am. Waves around 1 ft.

Wednesday

S wind 10 to 15 kt. A slight chance of snow before 1pm. Waves 1 to 2 ft.

Wednesday Night

Variable winds 5 kt or less. A slight chance of rain after 1am. Waves 1 ft or less.

Thursday

Variable winds 5 kt or less. Mostly sunny. Waves 1 ft or less.

Thursday Night

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

Friday

SSW wind around 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.