| NWS Forecast for: Wilmette Harbor to Northerly Island IL (LMZ741) Issued by: National Weather Service Chicago, IL Last Update: 330 AM CST Thu Dec 4 2025 |  |
Today: Northwest winds 15 to 25 kt becoming southwest and diminishing to 5 to 10 kt by late afternoon. Mostly sunny. Waves 4 to 6 ft occasionally to 8 ft subsiding to 1 to 3 ft. Tonight: Southwest winds around 10 kt increasing to 15 to 25 kt. Mostly clear in the evening, then becoming partly cloudy. waves 1 to 3 ft building to 2 to 4 ft. Friday: Southwest winds 15 to 20 kt. Mostly cloudy. Waves 2 to 4 ft subsiding to 1 to 3 ft. Friday Night: Southwest winds 15 to 20 kt becoming west overnight. Chance of snow in the evening, then slight chance of snow overnight. Waves 2 to 4 ft subsiding to 1 to 3 ft. | |
| Zone Forecast: Wilmette Harbor to Northerly Island IL (LMZ741) | |
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