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17NM ENE Chicago IL

[NOTICE]

High and low forecast temperature values represent air temperature.

Water temperature forecast is experimental.

Last Update: 4:57 pm CST Feb 20, 2026
Forecast Valid: 6pm CST Feb 20, 2026-6pm CST Feb 27, 2026

Tonight

WNW wind 20 to 25 kt decreasing to 15 to 20 kt after midnight. Mostly cloudy. Waves 5 ft subsiding to 2 ft.

Saturday

WNW wind 10 to 15 kt. Partly sunny. Waves 1 to 2 ft.

Saturday Night

NW wind 10 to 20 kt. A chance of snow showers after 9pm. Waves 1 ft building to 5 ft.

Sunday

NW wind 20 to 25 kt. A chance of snow showers. Waves 5 to 7 ft. occasionally to 9ft.

Sunday Night

NNW wind around 25 kt, with gusts as high as 30 kt. A chance of snow. Waves 7 ft building to 10 ft.

Monday

NNW wind 15 to 25 kt, with gusts as high as 30 kt. A chance of snow before noon. Waves 10 ft subsiding to 7 ft.

Monday Night

NNW wind 5 to 15 kt becoming SW after midnight. Mostly cloudy. Waves 7 ft subsiding to 3 ft.

Tuesday

SSW wind 10 to 15 kt. Partly sunny. Waves 2 to 3 ft.

Tuesday Night

SSW wind 15 to 20 kt. Mostly cloudy. Waves 2 to 4 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.