Coastal Waters Forecast for Wilmette Harbor to Northerly Island IL (LMZ741) (Text-Only)
NWS Forecast for: Wilmette Harbor to Northerly Island IL (LMZ741)
Issued by: National Weather Service Chicago, IL
Last Update: 914 PM CDT Sun Oct 12 2025
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Rest Of Tonight: Southeast winds 10 to 15 kt becoming south late. Partly cloudy late in the evening, then becoming mostly cloudy overnight. Waves 2 to 4 ft.

Monday: South winds 10 to 15 kt becoming southeast. A chance of sprinkles in the morning. Waves 1 to 3 ft.

Monday Night: Northeast winds around 5 kt becoming north. Mostly cloudy. Waves 1 to 2 ft.

Tuesday: North winds 10 to 15 kt increasing to 15 to 20 kt. Partly cloudy. Waves 2 to 4 ft building to 3 to 6 ft occasionally to 8 ft. A small craft advisory will likely be needed.







Zone Forecast: Wilmette Harbor to Northerly Island IL (LMZ741)

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