| 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: 838 AM CDT Wed Oct 21 2026 |  |
| Rest Of Today: South winds 5 to 10 kt. Waves 1 to 2 ft. Tonight: South winds 5 to 10 kt veering to west. Waves 1 ft or less. Thursday: Northeast winds 5 to 10 kt. Waves 1 ft or less. Thursday Night: Northeast winds 5 to 10 kt becoming southeast. Patchy fog in the evening, then patchy dense fog overnight. Waves 1 ft or less building to 1 to 3 ft. Friday: Southeast winds 10 to 20 kt. Waves 2 to 4 ft. Friday Night: Southeast winds 10 to 15 kt becoming south 10 to 20 kt. Waves 1 to 3 ft building to 2 to 4 ft. Saturday: South winds 15 to 25 kt increasing to 30 kt. Waves 4 to 6 ft occasionally to 8 ft building to 4 to 7 ft occasionally to 9 ft. Sunday: Southwest winds 10 to 20 kt. Waves 3 to 5 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 |