Every severe weather report published for Clay County, Illinois, newest first.
The National Weather Service has extended the Heat Advisory for portions of south central and southwest Illinois and southeast Missouri until 7 PM CDT today, September 9.
The National Weather Service warns of heat index values up to 108, with hot temperatures and high humidity potentially causing heat illnesses.
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 warns of dangerously hot conditions with heat index values up to 109 degrees through Saturday.
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.
The National Weather Service in Paducah, Kentucky, has issued an Extreme Heat Watch for portions of southern Illinois, southwest Indiana, western Kentucky, and southeast Missouri, effective from Tuesday morning through Friday evening, with heat index values up to 107 possible.
The National Weather Service warns of heat index values up to 103 degrees from Monday through Tuesday.