| 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: 856 AM CDT Mon Jun 29 2026 | |
Rest Of Today: Southeast winds to 30 kt becoming south. Waves 4 to 7 ft occasionally to 9 ft. Tonight: South winds to 30 kt diminishing to 15 to 25 kt. Waves 4 to 7 ft occasionally to 9 ft subsiding to 4 to 6 ft occasionally to 8 ft. Tuesday: South winds 10 to 20 kt increasing to 15 to 25 kt. Patchy fog in the morning. Waves 4 to 6 ft occasionally to 8 ft. Tuesday Night: Southwest winds 15 to 25 kt diminishing to 10 to 20 kt. Waves 4 to 6 ft occasionally to 8 ft. Wednesday: Southwest winds 10 to 20 kt becoming south 15 to 25 kt. Waves 3 to 5 ft. Wednesday Night: Southwest winds 15 to 25 kt diminishing to 10 to 20 kt. Waves 3 to 5 ft. Thursday: Southwest winds 15 to 25 kt becoming south. Waves 3 to 5 ft. Friday: Southwest winds 10 to 15 kt becoming south 10 to 20 kt. Chance of showers. Waves 1 to 3 ft. | |
| Zone Forecast: Lake Michigan from Winthrop Harbor to Wilmette Harbor IL 5NM offshore to Mid Lake (LMZ777) | |
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