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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: 9:55 am CDT Aug 19, 2026
Forecast Valid: 10am CDT Aug 19, 2026-6pm CDT Aug 25, 2026

Today

NNE wind 5 to 10 kt. Partly sunny. Waves 1 ft or less.

Tonight

NNE wind 5 to 10 kt. Mostly cloudy. Waves around 1 ft.

Thursday

Variable winds 5 kt or less. Sunny. Waves 1 ft or less.

Thursday Night

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

Friday

S wind 5 to 10 kt. A chance of showers and thunderstorms after 1pm. Waves 1 ft or less.

Friday Night

Variable winds 5 kt or less. A chance of showers and thunderstorms before 1am, then a slight chance of showers. Waves 1 ft or less.

Saturday

WNW wind around 10 kt becoming NNW in the afternoon. A slight chance of showers and thunderstorms. Waves 1 ft or less.

Saturday Night

NNW wind 5 to 10 kt. Mostly clear. Waves 1 ft or less.

Sunday

N 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.