Sunday
Chance of thunderstorms
High:
93°F
A 30 percent chance of showers and thunderstorms, mainly before noon. Patchy fog before 8am. Otherwise, mostly sunny, with a high near 93. Heat index values as high as 106. Calm wind.
Mount Vernon, IL Weather - Tomorrow’s Forecast
Sunday Night
Partly cloudy
Overnight low:
75°F
Partly cloudy, with a low around 75. Calm wind.