August 15, 2025

(9:00AM – Friday, August 15th, 2025) Hot temperatures and low/moderate humidity today… Timing…•Friday, August 15th Location…•All of Illinois. Discussion…•A heat wave will begin in earnest across the state today, with temperatures on the rise. High temperatures across the state today will generally range from around 90° to the upper 90’s….

(9:30PM – Thursday, August 14th, 2025) Weekend/Early Week Heat Wave Expected… Timing & Location…•Friday-Tuesday, August 15-19th: All of Illinois. Discussion…•Our next heat wave is on deck for this weekend into early next week. Hot temperatures well into the 90’s will be likely across the state on a daily basis, between…