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: 11:41 am CDT Mar 17, 2026
Forecast Valid: 12pm CDT Mar 17, 2026-6pm CDT Mar 23, 2026

This Afternoon

WSW wind around 10 kt. Increasing clouds. Waves 1 to 2 ft.

Tonight

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

Wednesday

SSW wind 5 to 15 kt, with gusts as high as 20 kt. Snow likely, mainly before 7am. Waves 1 to 2 ft.

Wednesday Night

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

Thursday

Variable winds 5 kt or less. A chance of showers before 1pm. Waves 1 ft or less.

Thursday Night

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

Friday

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

Friday Night

W wind around 10 kt becoming NNW in the evening. Mostly cloudy. Waves 1 to 2 ft.

Saturday

SSW wind around 10 kt. Mostly sunny. Waves 1 to 2 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.