Mount Vernon, IL Weather - Tomorrow’s Forecast

Thursday

Chance of thunderstorms

High:
87°F

A 30 percent chance of showers and thunderstorms, mainly between 10am and 5pm. Patchy fog before 8am. Otherwise, mostly sunny, with a high near 87. Calm wind becoming east northeast around 6 mph in the afternoon.

Thursday Night

Mostly cloudy

Overnight low:
67°F

Mostly cloudy, with a low around 67. Light east northeast wind.