| 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: 241 PM CDT Sat Oct 17 2026 |  |
Tonight: Southwest winds to 30 kt. Waves 7 to 10 ft occasionally to 13 ft. Sunday: Southwest winds to 30 kt. Waves 7 to 10 ft occasionally to 13 ft building to 10 to 14 ft occasionally to 18 ft. Sunday Night: Southwest winds to 30 kt diminishing to 10 to 20 kt. Waves 8 to 12 ft occasionally to 16 ft subsiding to 4 to 7 ft occasionally to 9 ft. Monday: Southwest winds 10 to 20 kt becoming south 10 to 15 kt. Waves 3 to 5 ft subsiding to 1 to 3 ft. Monday Night: South winds 5 to 10 kt becoming southeast. Waves 1 to 2 ft. Tuesday: Southeast winds 5 to 10 kt. Waves nearly calm. Tuesday Night: Southeast winds 5 to 10 kt. Waves 1 to 2 ft. Wednesday: South winds 10 to 15 kt. Waves 1 to 2 ft. Thursday: Southwest winds 5 to 10 kt becoming south 10 to 15 kt. Waves 1 ft or less. | |
| Zone Forecast: Lake Michigan from Wilmette Harbor to Michigan City in 5NM offshore to Mid Lake (LMZ779) | |
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