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Wilmette Harbor to Northerly Island IL Marine Forecast

Updated 9:15pm CDT Aug 26, 2026
Zone Map
Rest Of Tonight
Northwest winds 10 to 15 kt. Mostly clear.
Thursday
Northwest winds around 10 kt becoming northeast in the afternoon. Mostly sunny. Waves 1 to 2 ft.
Thursday Night
Northeast winds around 10 kt becoming east.
Friday
East winds around 5 kt becoming southeast. Mostly sunny. Waves 1 to 2 ft.