(6:30AM – Thursday, July 16th, 2026) Heat Wave Continues Today 🌡️ Hot temperatures and modestly elevated heat indices can once again be expected today across portions of the state. As has been the case over the past few days, the hottest temperatures will once again be across Northern Illinois, where…
(6:30AM – Wednesday, July 15th, 2026) Heat Wave Continues Today 🌡️ Hot temperatures and modestly elevated heat indices can be expected today. The hottest temperatures will once again be across Northern Illinois, where afternoon highs will climb into the low to upper 90’s. Elsewhere across Central and Southern Illinois, high…
(6:30AM – Tuesday, July 14th, 2026) Heat Wave Continues Today 🌡️ Hot temperatures will further overspread the state today. The hottest temperatures will once again be across Northern Illinois, where afternoon highs will climb into the low to upper 90’s. Elsewhere across Central and Southern Illinois, high temperatures will range…
(6:30AM – Monday, July 13th, 2026) Heat Wave Begins Today as a Record Upper-Level Ridge Expands into the Region 🔥 Hotter conditions will overspread much of the state today as a record-strength upper-level ridge builds further into the Midwest. The hottest temperatures today will be across Northern Illinois, where afternoon…
(8:30AM – Saturday, July 4th, 2026) Heat Wave Ends Today 🌡️ The week-long heat wave will come to an end across Illinois after today. While the northern half of the state will enjoy noticeably cooler and less humid conditions, hot and humid conditions will linger for one final day across…
(9:30AM – Friday, July 3rd, 2026) Heat Wave Continues, But Gradual Wind Down Begins 🌡️ While the peak of the heat wave has passed, hot and humid conditions will continue across much of Illinois today. However, the slow wind-down begins, with portions of Northern Illinois seeing some improvement compared to…
(6:30AM – Thursday, July 2nd, 2026) Heat Wave Peak Lasts One More Day Today 🌡️ The peak of the heat wave will continue across Illinois for one more day today, with hot and humid conditions persisting statewide. As we head into Friday and the holiday weekend, the heat wave will…
(6:30AM – Wednesday, July 1st, 2026) Heat Wave Peak Continues Today 🌡️ The peak of the heat wave will continue across the state today, with hot and humid conditions persisting. High temperatures will climb into the low to mid 90’s statewide, perhaps into the upper 90’s in some locations. Peak…
(6:00AM – Tuesday, June 30th, 2026) Heat Wave Peaks Today & Wednesday 🌡️ Today begins the peak of the heat wave across the state, as hot and humid conditions continue. High temperatures will climb into the low to mid 90’s statewide, perhaps into the upper 90’s in some locations. Peak…
(11:00AM – Monday, April 27th, 2026) Severe weather threat continues through later tonight/very early Tuesday morning… ⚠️Update…•With this update cycle, on the forecast for today/tonight, we have slightly adjusted severe t’storm probabilities along the gradient across portions of Central Illinois, based on real-time observations and the latest trends. Additionally, we…
