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: Calumet Harbor IL to Gary IN (LMZ743) Issued by: National Weather Service Chicago, IL Last Update: 257 PM CDT Fri Jul 18 2025 |  |
| Tonight: Northeast 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. Chance of showers and thunderstorms in the morning, then showers likely and a chance of thunderstorms in the afternoon. Waves 1 to 2 ft. Saturday Night: West winds 10 to 15 kt becoming north overnight. Chance of showers and thunderstorms. Waves 1 to 2 ft. Sunday: North winds 10 to 15 kt. Slight chance of showers and thunderstorms in the morning. Waves 1 to 3 ft. | |
| Zone Forecast: Calumet Harbor IL to Gary IN (LMZ743) | |
Visit your local NWS office at: https://www.weather.gov/lot |