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: 230 PM CST Fri Dec 26 2025


Tonight: Northwest winds around 10 kt becoming east late. Patchy fog after midnight. Waves 1 to 2 ft.

Saturday: Southeast winds 10 to 15 kt increasing to 15 to 20 kt. Patchy fog in the morning. Waves 1 to 2 ft building to 2 to 4 ft.

Saturday Night: Southeast winds 10 to 20 kt. Chance of rain. Waves 3 to 5 ft.

Sunday: South winds 10 to 20 kt becoming west and increasing to in the afternoon. Rain. Waves 2 to 4 ft subsiding to 1 to 2 ft.







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

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