Saturday
Sunny
High:
80°F
Sunny, with a high near 80. Northeast wind 6 to 9 mph.
Mount Vernon, IL Weather - Extended Forecast
Saturday Night
Mostly clear
Overnight low:
59°F
Mostly clear, with a low around 59. Northeast wind around 6 mph becoming calm in the evening.
Sunday
Sunny
High:
84°F
Sunny, with a high near 84. East northeast wind 3 to 6 mph.
Sunday Night
Partly cloudy
Overnight low:
66°F
Partly cloudy, with a low around 66. Northeast wind around 5 mph becoming calm in the evening.
Monday
Chance of thunderstorms
High:
84°F
Monday Night
Chance of thunderstorms
Overnight low:
67°F
Tuesday
Chance of showers
High:
84°F
Tuesday Night
Mostly clear
Overnight low:
67°F
Wednesday
Mostly sunny
High:
87°F