| NWS Forecast for: Wilmette Harbor to Northerly Island IL (LMZ741) Issued by: National Weather Service Chicago, IL Last Update: 258 PM CDT Sun Aug 23 2026 | |
| Late This Afternoon: Northeast winds 10 to 15 kt. Partly cloudy. Waves 2 to 4 ft. Tonight: Northeast winds around 10 kt becoming northwest late. Mostly clear. Waves 2 to 4 ft subsiding to 1 to 3 ft. Monday: West winds around 5 kt becoming northeast late. Mostly sunny in the morning, then becoming partly cloudy. Waves 1 to 3 ft. Monday Night: East winds around 10 kt becoming southwest less than 10 kt overnight. Partly cloudy in the evening then clearing. Waves 1 to 2 ft. Tuesday: South winds less than 10 kt becoming southeast around 10 kt in the afternoon. Mostly sunny. Waves around 1 ft. | |
| Zone Forecast: Wilmette Harbor to Northerly Island IL (LMZ741) | |
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