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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: 3:33 am CDT Mar 18, 2026
Forecast Valid: 3am CDT Mar 18, 2026-6pm CDT Mar 24, 2026

Wednesday

S wind 15 to 20 kt decreasing to 10 to 15 kt in the afternoon. Snow likely, mainly before 8am. Waves 4 ft subsiding to 1 ft.

Wednesday Night

SW wind 5 to 10 kt. A chance of rain, mainly after 4am. Waves 1 ft or less.

Thursday

SSE wind 5 to 10 kt becoming NNE in the afternoon. A chance of rain before 1pm. Waves 1 ft or less.

Thursday Night

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

Friday

SW wind 5 to 10 kt. Mostly cloudy. Waves 1 ft or less.

Friday Night

NNW wind around 10 kt. Mostly cloudy. Waves 1 ft or less.

Saturday

W wind around 10 kt becoming SSW in the afternoon. Mostly sunny. Waves around 1 ft.

Saturday Night

SW wind 10 to 20 kt becoming NNW after midnight. Mostly cloudy. Waves 1 to 3 ft.

Sunday

N wind 20 to 25 kt. Mostly cloudy. Waves 4 ft building to 8 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.