Thursday
Chance of thunderstorms
High:
96°F
A 30 percent chance of showers and thunderstorms before 8am. Partly sunny, with a high near 96. Heat index values as high as 109. Calm wind becoming west southwest around 5 mph in the afternoon.
Mount Vernon, IL Weather - Tomorrow’s Forecast
Thursday Night
Partly cloudy
Overnight low:
77°F
Partly cloudy, with a low around 77. South wind 3 to 6 mph.