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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: 6:02 am CDT Mar 16, 2026
Forecast Valid: 6am CDT Mar 16, 2026-6pm CDT Mar 22, 2026

Today

NW wind 30 to 35 kt. Snow, mainly before 1pm. Widespread freezing spray after 7am. Waves 12 to 13 ft. occasionally to 17ft.

Tonight

NW wind 25 to 30 kt. A chance of snow, mainly before 8pm. Widespread freezing spray. Waves 11 ft subsiding to 8 ft.

Tuesday

WNW wind 15 to 20 kt becoming W 10 to 15 kt in the afternoon. Widespread freezing spray before 11am. Partly sunny. Waves 6 ft subsiding to 2 ft.

Tuesday Night

SSW wind 10 to 20 kt. Snow likely, mainly after 1am. Waves 2 to 3 ft.

Wednesday

SSW wind 15 to 20 kt decreasing to 10 to 15 kt in the afternoon. A slight chance of snow before 1pm. Waves 1 to 3 ft.

Wednesday Night

SSW wind around 10 kt. A slight chance of rain after 1am. Waves 1 ft or less.

Thursday

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

Thursday Night

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

Friday

SSW wind around 10 kt. Mostly cloudy. Waves around 1 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.