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Coastal Waters Forecast for Winthrop Harbor to Wilmette Harbor IL (LMZ740) (Text-Only)
NWS Forecast for: Winthrop Harbor to Wilmette Harbor IL (LMZ740)
Issued by: National Weather Service Chicago, IL
Last Update: 242 PM CDT Thu Oct 2 2025		Print

Tonight: Southeast winds 10 to 15 kt easing to 5 to 10 kt this evening, then becoming south overnight. Clear. Waves 1 to 2 ft.

Friday: Southwest winds 5 to 10 kt becoming southeast late. Mostly sunny. Waves 1 to 2 ft.

Friday Night: South winds 5 to 10 kt in the evening. Mostly clear. Waves 1 to 2 ft.

Saturday: South winds 10 to 15 kt. Mostly sunny. Waves 1 to 2 ft.






Zone Forecast: Winthrop Harbor to Wilmette Harbor IL (LMZ740)

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