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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: 8:01 pm CDT Mar 18, 2026
Forecast Valid: 9pm CDT Mar 18, 2026-6pm CDT Mar 25, 2026

Tonight

Variable winds 5 kt or less. A slight chance of showers after 4am. Waves 1 ft or less.

Thursday

Variable winds 5 kt or less. A chance of showers, mainly before 11am. Waves 1 ft or less.

Thursday Night

NE wind 5 to 10 kt becoming SSW after midnight. Mostly cloudy. Waves 1 ft or less.

Friday

SW wind around 10 kt becoming NW in the afternoon. Mostly cloudy. Waves 1 ft or less.

Friday Night

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

Saturday

N wind 5 to 10 kt becoming SSW in the afternoon. Mostly sunny. Waves 1 ft or less.

Saturday Night

SSW wind 10 to 15 kt becoming NW after midnight. Partly cloudy. Waves 1 ft or less.

Sunday

N wind 15 to 20 kt. Mostly cloudy. Waves 3 ft building to 6 ft.

Sunday Night

N wind around 20 kt. Mostly cloudy. Waves 6 to 7 ft. occasionally to 9ft.

*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.