Heavy Rain From the Central Plains to the Mid-Atlantic; Heat Wave Begins This Weekend
Strong to severe thunderstorms and heavy rain will impact portions of the central Plains into the Upper Midwest and the Mid-Atlantic through the weekend. A stretch of unusually hot and humid weather is expected across portions of the central U.S. and the Southeast beginning this weekend and continuing through next week. The heat may reach dangerous levels, particularly mid to late next week. Read More >
| NWS Forecast for: Northerly Island to Calumet Harbor IL (LMZ742) Issued by: National Weather Service Chicago, IL Last Update: 257 PM CDT Fri Jul 18 2025 | |
| Tonight: East winds 5 to 10 kt becoming south late. Mostly clear in the evening, then becoming mostly cloudy. Waves 1 to 3 ft. Saturday: South winds 10 to 15 kt becoming southwest in the afternoon. Showers likely and a chance of thunderstorms. Waves 1 to 2 ft. Saturday Night: Northwest winds 5 to 10 kt becoming north 10 to 15 kt overnight. Chance of showers and thunderstorms in the evening, then slight chance of showers and thunderstorms overnight. Waves 1 to 3 ft. Sunday: Northeast winds 10 to 15 kt. Slight chance of showers and thunderstorms in the morning. 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 |