Heavy to Excessive Rains in The Four Corners Region and Midwest; Heat Persists in the South-Central U.S.
Repeated rounds of showers and thunderstorms could bring a flash flooding threat across the Four Corners region and from the mid-Mississippi Valley into the lower Great Lakes. Hot temperatures and high humidity will continue to challenge daily records from the Southern Plains to the lower Mississippi Valley. Read More >
| NWS Forecast for: Calumet Harbor IL to Gary IN (LMZ743) Issued by: National Weather Service Chicago, IL Last Update: 210 PM CDT Wed Sep 16 2026 |  |
Tonight: Northeast winds 10 to 15 kt becoming variable at less than 10 kt. Scattered showers and thunderstorms especially toward daybreak. Waves 1 to 2 ft. Thursday: Variable winds less than 10 kt. Numerous showers and thunderstorms in the morning. Waves 1 to 2 ft. Thursday Night: Northeast winds 10 to 15 kt. Mostly cloudy. Waves 1 to 2 ft. Friday: East winds 10 to 15 kt. Mostly cloudy. Waves 1 to 3 ft. | |
| Zone Forecast: Calumet Harbor IL to Gary IN (LMZ743) | |
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