Chart / Forecasts

Wilmette Harbor to Northerly Island IL

LMZ741 · Nearshore Marine Forecast · National Weather Service Chicago/Romeoville IL · Issued 239 PM CDT Sat Oct 3 2026
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Forecast
Tonight
Southeast winds 10 to 15 kt becoming southwest overnight. A chance of sprinkles after midnight, mainly north of Wilmette Harbor. Waves 1 to 3 ft.
Sunday
West winds 10 to 15 kt becoming northwest in the afternoon. Mostly sunny. Waves 1 to 2 ft.
Sunday Night
Northwest winds 10 to 15 kt. Mostly clear. Waves 1 to 3 ft building to 2 to 4 ft.
Monday
North winds around 10 kt becoming northeast in the afternoon. Sunny. Waves 2 to 4 ft.
Source: National Weather Service Nearshore Marine Forecast (NSH), issued 239 PM CDT Sat Oct 3 2026, valid until Sun, 04 Oct 2026 06:00 UTC. Original text · All zones