Dangerous Heat and Possible Flooding This Week
Hot temperatures and high humidity are forecast to continue across much of east Texas into the mid-Mississippi Valley through this week. Heavy to excessive rainfall occurring at times through Friday could bring areas of flooding across parts of the central Plains into the upper Midwest and Four Corners states. Read More >
| NWS Forecast for: Wilmette Harbor to Northerly Island IL (LMZ741) Issued by: National Weather Service Chicago, IL Last Update: 239 PM CDT Tue Sep 15 2026 |  |
Late This Afternoon: Southwest winds 10 to 15 kt becoming west. Patchy fog. Partly cloudy. Waves around 1 ft. Tonight: Northwest winds 10 to 15 kt becoming northeast. Patchy fog in the evening. Scattered showers and thunderstorms. Waves 1 to 2 ft building to 2 to 4 ft. Wednesday: Northeast winds 10 to 15 kt. Slight chance of showers and thunderstorms. Waves 2 to 4 ft. Wednesday Night: Northeast winds around 10 kt becoming east. Chance of showers and thunderstorms. Waves 2 to 4 ft subsiding to 1 to 3 ft. Thursday: North winds around 10 kt becoming northeast. Chance of showers and thunderstorms in the morning. 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 |