| NWS Forecast for: Wilmette Harbor to Northerly Island IL (LMZ741) Issued by: National Weather Service Chicago, IL Last Update: 929 PM CDT Thu Mar 19 2026 |  |
| Rest Of Tonight: East winds 5 to 10 kt becoming southwest late. Partly cloudy late in the evening, then becoming mostly cloudy. waves 1 to 2 ft. Friday: West winds 10 to 15 kt becoming northeast in the afternoon. Mostly cloudy. Waves 1 to 2 ft. Friday Night: North winds 10 to 15 kt becoming northeast around 5 kt overnight. Mostly cloudy. Waves 1 to 2 ft. Saturday: Southeast winds around 10 kt becoming south in the afternoon. Partly cloudy. Waves 1 to 2 ft. | |
| Zone Forecast: Wilmette Harbor to Northerly Island IL (LMZ741) | |
Visit your local NWS office at: https://www.weather.gov/lot |