Coastal Waters Forecast for Lake Michigan from Wilmette Harbor to Michigan City in 5NM offshore to Mid Lake (LMZ779) (Text-Only)
NWS Forecast for: Lake Michigan from Wilmette Harbor to Michigan City in 5NM offshore to Mid Lake (LMZ779)
Issued by: National Weather Service Chicago, IL
Last Update: 259 AM CDT Wed Sep 2 2026




Today: Southwest winds 5 to 10 kt increasing to 10 to 20 kt. Waves 1 to 3 ft.

Tonight: Northwest winds 10 to 20 kt backing to southwest 10 to 15 kt late in the evening, then becoming west after midnight becoming southwest late. Slight chance of showers and thunderstorms in the evening, then chance of showers and thunderstorms overnight. Waves 1 to 3 ft.

Thursday: South winds 5 to 10 kt backing to northeast. Chance of showers in the afternoon. Waves 1 to 2 ft.

Thursday Night: Northeast winds 5 to 10 kt becoming east. Showers likely with a chance of thunderstorms overnight. Waves 1 ft or less.

Friday: East winds 5 to 10 kt. Chance of showers. Waves 1 to 2 ft.

Friday Night: Northeast winds 5 to 10 kt becoming east. Chance of showers and thunderstorms. Waves 1 to 2 ft.

Saturday: East winds 10 to 15 kt diminishing to 5 to 10 kt. Waves 1 to 3 ft.

Sunday: Southeast winds 10 to 20 kt diminishing to 10 to 15 kt. Waves 1 to 3 ft.







Zone Forecast: Lake Michigan from Wilmette Harbor to Michigan City in 5NM offshore to Mid Lake (LMZ779)

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