| 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: 255 PM CST Fri Jan 9 2026 |  |
Tonight: North winds 10 to 15 kt veering to southeast. Slight chance of rain overnight. Waves 4 to 7 ft occasionally to 9 ft subsiding to 2 to 4 ft. Saturday: South winds 10 to 15 kt becoming southwest 10 to 20 kt late in the morning, then becoming west 15 to 25 kt early in the afternoon increasing to 30 kt late. Snow and rain in the morning, then chance of rain and snow in the afternoon. Waves 1 to 3 ft building to 5 to 8 ft occasionally to 10 ft. Saturday Night: West winds to 30 kt becoming northwest gales to 35 kt. Chance of snow. Freezing spray overnight. Waves 8 to 12 ft occasionally to 16 ft building to 10 to 14 ft occasionally to 18 ft. Sunday: Northwest gales to 35 kt diminishing to 30 kt. Chance of snow in the morning. Waves 12 to 16 ft occasionally to 21 ft. Sunday Night: West winds 15 to 25 kt becoming southwest to 30 kt. Waves 6 to 9 ft occasionally to 12 ft. Monday: Southwest winds to 30 kt diminishing to 15 to 25 kt. Waves 6 to 9 ft occasionally to 12 ft. Monday Night: Southwest winds 10 to 20 kt increasing to 30 kt. Waves 4 to 7 ft occasionally to 9 ft building to 5 to 8 ft occasionally to 10 ft. Tuesday: Southwest winds to 30 kt. Chance of rain. Waves 6 to 9 ft occasionally to 12 ft. Wednesday: Northwest winds to 30 kt becoming north gales to 35 kt. Chance of snow and rain. Waves 8 to 11 ft occasionally to 14 ft. | |
| Zone Forecast: Lake Michigan from Wilmette Harbor to Michigan City in 5NM offshore to Mid Lake (LMZ779) | |
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