Mount Vernon, IL Weather - Tomorrow’s Forecast

Christmas Day

Mostly cloudy

High:
66°F

Mostly cloudy, with a high near 66. West wind around 6 mph becoming light and variable in the afternoon.

Thursday Night

Mostly cloudy

Overnight low:
57°F

Mostly cloudy, with a low around 57. Light and variable wind becoming south southwest 5 to 9 mph in the evening.