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: 935 AM CST Fri Nov 28 2025




Rest Of Today: Northwest winds 15 to 25 kt becoming west and diminishing to 10 to 15 kt this afternoon. Partly cloudy. Waves 2 to 4 ft subsiding to 1 to 3 ft.

Tonight: West winds around 10 kt becoming south overnight. Snow likely overnight. Waves 1 to 2 ft.

Saturday: South winds 10 to 20 kt becoming southeast and increasing to 20 to 25 kt. Snow. Waves 2 to 4 ft building to 5 to 8 ft occasionally to 10 ft.

Saturday Night: Southeast winds 20 to 25 kt becoming west 15 to 25 kt overnight. Snow and slight chance of rain. Waves 5 to 8 ft occasionally to 10 ft subsiding to 4 to 6 ft occasionally to 8 ft.







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

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