(6:30AM – Friday, September 18th, 2026)
Heat Wave Marches On Today🔥
Hot and humid conditions will once again continue today across all of Southern Illinois, with conditions kicking back southward just a bit across Central Illinois.
For today, high temperatures will range from around 90° to the upper 90’s across all of Southern and portions of Central Illinois. Elevated heat index values are expected as well, with peak heat indices of 95-106° expected across a portion of Central and all of Southern Illinois.
#ilwx #heatwave
