Every severe weather report published for Shelbyville, Illinois, newest first.
The National Weather Service has issued a flood watch for parts of Illinois and Missouri, in effect from Thursday, September 3, 2026, through late Monday night.
The National Weather Service warns that heat-related illnesses increase significantly during the ongoing extreme heat and high humidity.
The National Weather Service has issued a Heat Advisory for ten counties in central Illinois, with heat index values expected to exceed 100 degrees, in effect until 7 PM CDT Monday.
The National Weather Service has issued a Heat Advisory for parts of Illinois and Missouri, including Greene, Macoupin, and Montgomery counties in Illinois, with heat index values up to 105 expected.
Excessive runoff from heavy rainfall could flood rivers, creeks, and urban areas through early August 20.