(9:30AM – Monday, July 15th, 2024) As a ridge centered across the Inter-Mountain West extends a bit into the Central U.S., a multi-day period of hot and humid conditions will continue across the region and state. These conditions are expected over a multi-day period through Tuesday, July 16th.
Timing & Location…
•Saturday, July 13th – Tuesday, July 16th: All Of Illinois.
Impacts…
•Daily high temperatures in the mid 80’s to upper 90’s can be expected across much of the state.
•Daily heat index values between 90-110 can be expected across much of the state.
•Daily shower/t’storm chances across portions of the state will temper conditions in some areas at times.
Discussion…
•A ridge that had been in place across the Western U.S. is now entrenched in the Inter-Mountain West, and is poking out into the Central U.S. as well. This will continue to bring a multi-day period of hot and humid conditions to the state through Tuesday. Daily chances of showers/t’storms across the state may temper conditions for some areas at times. This period will feature the most humid conditions and highest heat index values of the summer to date.
Short Term/Two-Day Forecast…
•Monday, July 15th: High temperatures of 87-100 across the state, with peak heat indices of 93-110.
•Tuesday, July 16th: High temperatures of 85-93 across Central and Southern Illinois, with peak heat indices of 90-103.
