| 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: 238 PM CDT Sun Sep 6 2026 |  |
| Tonight: North winds 10 to 15 kt veering to southeast 10 to 15 kt. Waves 1 to 3 ft. Monday: Southeast winds 10 to 15 kt becoming east. Waves 1 to 2 ft. Monday Night: East winds 10 to 15 kt becoming southeast 10 to 20 kt. Waves 1 to 2 ft building to 2 to 4 ft. Tuesday: South winds 15 to 25 kt. Waves 3 to 5 ft building to 4 to 7 ft occasionally to 9 ft. Tuesday Night: South winds 15 to 25 kt becoming southwest. Chance of showers in the evening, then showers overnight. Waves 5 to 8 ft occasionally to 10 ft. Wednesday: Southwest winds to 30 kt. Showers likely in the morning. Waves 4 to 7 ft occasionally to 9 ft. Wednesday Night: West winds to 30 kt becoming northwest. Waves 4 to 6 ft occasionally to 8 ft. Thursday: Northwest winds 10 to 20 kt. Waves 4 to 6 ft occasionally to 8 ft. Friday: Southwest winds 10 to 20 kt becoming south 15 to 25 kt. Waves 1 to 3 ft. | |
| Zone Forecast: Lake Michigan from Wilmette Harbor to Michigan City in 5NM offshore to Mid Lake (LMZ779) | |
Visit your local NWS office at: https://www.weather.gov/lot |