| NWS Forecast for: Wilmette Harbor to Northerly Island IL (LMZ741) Issued by: National Weather Service Chicago, IL Last Update: 235 PM CST Tue Feb 17 2026 |  |
Tonight: Southeast winds 15 to 20 kt becoming south 20 to 25 kt late. Chance of showers in the evening, then showers likely and slight chance of thunderstorms after midnight. Waves 2 to 4 ft building to 3 to 5 ft. Wednesday: Southwest winds to 30 kt easing to 20 to 25 kt late. Slight chance of showers in the morning. Waves 3 to 5 ft subsiding to 2 to 4 ft late. Wednesday Night: Southwest winds 10 to 15 kt becoming south overnight. Partly cloudy in the evening, then becoming mostly cloudy. Waves 1 to 3 ft. Thursday: Southeast winds 10 to 15 kt. Slight chance of rain in the morning, then chance of rain in the afternoon. Waves 1 to 2 ft building to 2 to 4 ft. wave heights are for ice free areas. | |
| Zone Forecast: Wilmette Harbor to Northerly Island IL (LMZ741) | |
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