National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

Mount Vernon Airport (KMVN)

Lat: 38.33°NLon: 88.85°WElev: 466ft.

Fair

88°F

31°C

Humidity 59%
Wind Speed SE 3 mph
Barometer 30.08 in (1018.3 mb)
Dewpoint 72°F (22°C)
Visibility 10.00 mi
Heat Index95°F (35°C)
Last update 7 Aug 5:56 pm CDT
Extended Forecast for

Waltonville IL

  • Tonight

    Tonight: A 20 percent chance of showers and thunderstorms before 7pm. Partly cloudy, with a low around 73. Light south southeast wind.

    Low: 73 °F

    Slight Chance
    T-storms then
    Partly Cloudy

  • Friday

    Friday: Sunny, with a high near 95. Calm wind becoming south southeast 5 to 9 mph in the morning.

    High: 95 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 73. South southeast wind 3 to 6 mph.

    Low: 73 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 95. South wind 6 to 10 mph.

    High: 95 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 73. South wind 3 to 7 mph.

    Low: 73 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 95. South wind 3 to 7 mph.

    High: 95 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 73. South southeast wind around 6 mph becoming calm in the evening.

    Low: 73 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 94. South wind 3 to 7 mph.

    High: 94 °F

    Sunny

  • Monday Night

    Monday Night: A slight chance of showers and thunderstorms. Mostly clear, with a low around 73. South southeast wind around 6 mph becoming calm in the evening.

    Low: 73 °F

    Slight Chance
    T-storms

Detailed Forecast

Tonight
A 20 percent chance of showers and thunderstorms before 7pm. Partly cloudy, with a low around 73. Light south southeast wind.
Friday
Sunny, with a high near 95. Calm wind becoming south southeast 5 to 9 mph in the morning.
Friday Night
Mostly clear, with a low around 73. South southeast wind 3 to 6 mph.
Saturday
Sunny, with a high near 95. South wind 6 to 10 mph.
Saturday Night
Mostly clear, with a low around 73. South wind 3 to 7 mph.
Sunday
Sunny, with a high near 95. South wind 3 to 7 mph.
Sunday Night
Mostly clear, with a low around 73. South southeast wind around 6 mph becoming calm in the evening.
Monday
Sunny, with a high near 94. South wind 3 to 7 mph.
Monday Night
A slight chance of showers and thunderstorms. Mostly clear, with a low around 73. South southeast wind around 6 mph becoming calm in the evening.
Tuesday
A chance of showers and thunderstorms. Mostly sunny, with a high near 93. Calm wind becoming south around 6 mph in the morning.
Tuesday Night
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 72. South wind around 5 mph becoming calm in the evening.
Wednesday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 92. Calm wind becoming south southwest around 6 mph in the afternoon.
Wednesday Night
Partly cloudy, with a low around 71. South wind around 5 mph becoming calm in the evening.
Thursday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 93. Calm wind becoming south southeast around 6 mph in the afternoon.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Waltonville IL
 38.2°N 89.03°W
Last Update:
6:02 pm CDT Aug 7, 2025
Forecast Valid:
6pm CDT Aug 7, 2025-6pm CDT Aug 14, 2025
 
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Additional Resources

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Chance of Precipitation