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: 11:56 pm CDT Aug 21, 2026
Forecast Valid: 12am CDT Aug 22, 2026-6pm CDT Aug 28, 2026

Overnight

SW wind around 10 kt becoming W. A slight chance of showers and thunderstorms before 1am. Waves 1 ft or less.

Saturday

NNW wind 10 to 15 kt. A slight chance of showers and thunderstorms after 1pm. Waves 1 ft or less.

Saturday Night

NNW wind around 10 kt, with gusts as high as 15 kt. Mostly clear. Waves 1 to 2 ft.

Sunday

NNW wind around 10 kt, with gusts as high as 20 kt. Sunny. Waves around 2 ft.

Sunday Night

N wind 5 to 10 kt becoming W after midnight. Mostly clear. Waves 1 to 2 ft.

Monday

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

Monday Night

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

Tuesday

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

Tuesday Night

Variable winds 5 kt or less. 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.