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: 347 AM CDT Mon Mar 24 2025




Today: West gales to 35 kt becoming northwest and gradually diminishing to 20 to 25 kt late in the afternoon. Mostly cloudy in the morning, then becoming partly cloudy. Waves 3 to 5 ft subsiding to 2 to 4 ft.

Tonight: West winds 10 to 20 kt diminishing to 5 to 10 kt. Mostly clear. Waves 1 to 3 ft subsiding to around 2 ft or less.

Tuesday: Northwest winds 5 to 10 kt becoming northeast 10 to 15 kt in the afternoon. Partly cloudy. Waves 1 to 2 ft.

Tuesday Night: Northeast winds 10 to 15 kt becoming west 5 to 10 kt overnight. Partly cloudy. Waves 1 to 2 ft.







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

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