Thursday
Sunny
High:
91°F
A 40 percent chance of showers and thunderstorms, mainly after 3pm. Mostly sunny, with a high near 91. Heat index values as high as 102. Calm wind becoming south around 5 mph in the afternoon.
Belleville, IL Weather - Tomorrow’s Forecast
Thursday Night
Chance of thunderstorms
Overnight low:
74°F
A 30 percent chance of showers and thunderstorms, mainly before 7pm. Partly cloudy, with a low around 74. Light southwest wind.