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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: 11:51 am CDT Apr 21, 2026
Forecast Valid: 12pm CDT Apr 21, 2026-6pm CDT Apr 27, 2026

This Afternoon

SW wind 10 to 15 kt. Scattered showers and thunderstorms after 3pm. Waves 1 to 2 ft.

Tonight

SW wind 5 to 10 kt becoming N after midnight. A slight chance of showers between 11pm and midnight. Patchy fog after 8pm. Waves 1 ft or less.

Wednesday

Variable winds 5 kt or less. Patchy fog before 10am, then Patchy fog between 11am and 4pm. Waves 1 ft or less.

Wednesday Night

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

Thursday

SSE wind around 10 kt, with gusts as high as 15 kt. Mostly sunny. Waves around 1 ft.

Thursday Night

S wind around 15 kt. A chance of showers and thunderstorms between 1am and 4am, then a chance of showers after 4am. Waves around 2 ft.

Friday

S wind 10 to 15 kt. A chance of showers, then showers likely and possibly a thunderstorm after 1pm. Waves 1 to 2 ft.

Friday Night

W wind around 10 kt becoming NNW after midnight. Mostly cloudy. Waves around 1 ft.

Saturday

N wind 10 to 15 kt. Mostly sunny. Waves 2 to 3 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.