Belleville, IL Weather - Tomorrow’s Forecast

Friday

Hot

High:
97°F

Sunny and hot, with a high near 97. Heat index values as high as 106. Northeast wind around 5 mph becoming calm in the afternoon.

Clouds clearing

Overnight low:
74°F

Mostly cloudy, then gradually becoming clear, with a low around 74. Northeast wind around 6 mph becoming light and variable after midnight.