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: Northerly Island to Calumet Harbor IL (LMZ742) Issued by: National Weather Service Chicago, IL Last Update: 916 PM CDT Mon Sep 14 2026 | |
Rest Of Tonight: Southeast winds to 30 kt becoming southwest 15 to 25 kt toward morning. Slight chance of showers and thunderstorms late this evening, then a chance of showers and thunderstorms after midnight. Waves 5 to 8 ft occasionally to 10 ft. Tuesday: Southwest winds 15 to 20 kt becoming west 10 to 15 kt. Chance of showers and thunderstorms. Waves 4 to 7 ft occasionally to 9 ft subsiding to 2 to 4 ft. Tuesday Night: Northwest winds around 10 kt becoming north. chance of showers and thunderstorms. Waves 1 to 3 ft. Wednesday: Northeast winds 10 to 15 kt. Chance of showers and thunderstorms. Waves 2 to 4 ft. | |
| Zone Forecast: Northerly Island to Calumet Harbor IL (LMZ742) | |
Visit your local NWS office at: https://www.weather.gov/lot |