Mount Vernon, IL Weather - Tomorrow’s Forecast

Sunday

Mostly sunny

High:
91°F

A slight chance of showers before 4pm, then a slight chance of showers and thunderstorms between 4pm and 5pm. Partly sunny, with a high near 91. Calm wind becoming west around 6 mph in the afternoon. Chance of precipitation is 20%.

Sunday Night

Slight chance of thunderstorms

Overnight low:
63°F

A 20 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 63. Northeast wind 5 to 7 mph.