| NWS Forecast for: Wilmette Harbor to Northerly Island IL (LMZ741) Issued by: National Weather Service Chicago, IL Last Update: 244 PM CDT Tue May 5 2026 |  |
| Tonight: Southeast winds 10 to 15 kt becoming northwest after midnight. Mostly cloudy. Waves 1 to 2 ft. Wednesday: Northwest winds 10 to 20 kt becoming east around 10 kt in the afternoon. Mostly cloudy. Waves 1 to 2 ft. Wednesday Night: West winds around 10 kt. Partly cloudy. Waves around 1 ft. Thursday: West winds 10 to 15 kt. Slight chance of showers in the afternoon. 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 |