July 20, 2026

(9:30AM – Monday, July 20th, 2026) Heat & Humidity Resurge Return Today 🌡️ Ahead of a passing storm system, hot and humid conditions will resurge across portions of Illinois today. High temperatures in the upper 80s to mid 90s will be common across Western and Southern Illinois, where peak heat…

(11:00PM – Sunday, July 19th, 2026) A severe weather threat is possible across a large chunk of the state on Monday/Monday night, with potentially two rounds of activity being possible. However, it should be noted that there is currently uncertainty on the exact evolution. There are signs that an initial…