Springfield, Illinois – Dangerous heat and a series of strong to severe thunderstorms threaten Central Illinois today, with temperatures soaring to 95°F and heat indices reaching as high as 105° south of I-72. Residents should prepare for multiple rounds of storms from this afternoon into the evening, potentially impacting travel and outdoor plans.
According to the US National Weather Service Central Illinois, the highest risk for severe weather—including damaging winds, lightning, and heavy rainfall—will concentrate in the southeast part of the state through Wednesday night. Storm activity could cause localized flooding and hazardous driving conditions on major routes such as I-55, I-72, and surrounding county roads.
Power outages and brief school disruptions are possible if storms intensify. Officials urge everyone to avoid non-essential travel during storms, stay indoors, and ensure phones and devices remain charged. South of I-72, the combination of high humidity and temperatures could lead to dangerous heat stress—limit outdoor activity and drink plenty of water.
Cooler, less humid air arrives Thursday, bringing relief from the oppressive heat. Storm chances taper off but isolated showers may linger in some counties. This pattern of milder temperatures and lower humidity will continue through the weekend, offering a welcome break for much of Illinois.
Stay alert for updated advisories as warnings may continue into Thursday. Next full update expected by early Thursday morning.
Five Day Forecast:
- Wednesday: Storms likely, 60-80% chance. High 85–95°F, heat index up to 105° south of I-72. Strong to severe storms possible, especially afternoon/evening.
- Thursday: Isolated showers early (30–60% chance). Cooler, less humid. High 75–85°F, low 55–65°F.
- Friday: Mostly sunny, pleasant. High 75–80°F, low 55–60°F.
- Saturday: Partly cloudy, mild. High 75–80°F, low 55–60°F.
- Sunday: Mostly sunny, seasonable. High 80–85°F, low 60–65°F.
