Champaign, IL –Scorching temperatures and scattered storms could make for a hazardous Sunday across central Illinois, with heat indices soaring into the upper 90s and thunderstorms developing by afternoon.
According to the National Weather Service in Lincoln, heat index values will push near 100°F today across Peoria, Bloomington, Champaign, and Springfield, especially during peak afternoon hours. A heat-driven surge in humidity may trigger isolated thunderstorms after 1 p.m., followed by a stronger round of storms overnight.
Scattered storms tonight could bring isolated damaging wind gusts, frequent lightning, and bursts of locally heavy rain, especially in areas like Decatur and Mattoon. While widespread severe weather is not expected, some stronger cells may develop, particularly after sunset.
Looking ahead, the threat of severe weather increases Monday, with storms likely across much of central and southeast Illinois during the late afternoon and evening. Wind gusts over 40 mph and heavy downpours could impact the evening commute. Residents are urged to secure outdoor items and remain weather-aware through Tuesday.
Hazardous conditions may linger through midweek, though clearer skies and highs in the 80s return by Tuesday. More storm activity is possible Friday.
⛅ Five-Day Forecast for Champaign, IL:
- Sunday: High 90°F – Slight chance of storms after 1 p.m.
- Monday: High 87°F – Showers and storms likely in the afternoon
- Tuesday: High 85°F – Sunny, calmer conditions
- Wednesday: High 88°F – Sunny and dry
- Thursday: High 90°F – Mostly clear skies, hot again
