| NWS Forecast for: Lake Michigan from Winthrop Harbor to Wilmette Harbor IL 5NM offshore to Mid Lake (LMZ777) Issued by: National Weather Service Chicago, IL Last Update: 315 AM CST Wed Nov 4 2026 | |
| Today: South winds to 30 kt becoming southwest. Chance of rain this morning, then slight chance of rain this afternoon. Waves 6 to 9 ft occasionally to 12 ft. Tonight: Southwest winds to 30 kt. Slight chance of rain overnight. Waves 7 to 10 ft occasionally to 13 ft. Thursday: Southwest winds to 30 kt becoming west. Rain likely. Waves 7 to 10 ft occasionally to 13 ft subsiding to 5 to 8 ft occasionally to 10 ft. Thursday Night: Northwest winds to 30 kt becoming north. Rain likely in the evening, then chance of rain overnight. Waves 8 to 11 ft occasionally to 14 ft building to 10 to 14 ft occasionally to 18 ft. Friday: North winds to 30 kt increasing to around 35 kt. Rain likely in the morning, then chance of rain in the afternoon. Waves 12 to 16 ft occasionally to 19 ft. Friday Night: North winds to 30 kt diminishing to 10 to 20 kt. Chance of rain. Waves 10 to 14 ft occasionally to 18 ft subsiding to 6 to 9 ft occasionally to 12 ft. Saturday: Northwest winds 10 to 20 kt becoming west 10 to 15 kt. Waves 4 to 6 ft occasionally to 8 ft subsiding to 3 to 5 ft. Sunday: West winds 15 to 25 kt. Waves 4 to 6 ft occasionally to 8 ft. | |
| Zone Forecast: Lake Michigan from Winthrop Harbor to Wilmette Harbor IL 5NM offshore to Mid Lake (LMZ777) | |
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