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.

76°F

24°C

Humidity 32%
Wind Speed S 10 mph
Barometer 30.01 in (1016.5 mb)
Dewpoint 44°F (7°C)
Visibility 10.00 mi
Heat Index77°F (25°C)
Last update 19 Mar 4:56 pm CDT
Extended Forecast for

Waltonville IL

  • Tonight

    Tonight: Mostly clear, with a low around 52. South wind 6 to 8 mph.

    Low: 52 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 80. West southwest wind 7 to 11 mph, with gusts as high as 18 mph.

    High: 80 °F

    Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 50. West southwest wind 5 to 7 mph becoming calm in the evening.

    Low: 50 °F

    Partly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 80. Calm wind becoming northwest around 6 mph in the afternoon.

    High: 80 °F

    Sunny

  • Saturday Night

    Saturday Night: Clear, with a low around 59. South wind 3 to 8 mph.

    Low: 59 °F

    Clear

  • Sunday

    Sunday: Sunny, with a high near 85. South southwest wind 10 to 15 mph, with gusts as high as 23 mph.

    High: 85 °F

    Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 42. North wind 11 to 14 mph, with gusts as high as 23 mph.

    Low: 42 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 58. North wind around 10 mph, with gusts as high as 18 mph.

    High: 58 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 38. East wind around 5 mph.

    Low: 38 °F

    Partly Cloudy

Detailed Forecast

Tonight
Mostly clear, with a low around 52. South wind 6 to 8 mph.
Friday
Sunny, with a high near 80. West southwest wind 7 to 11 mph, with gusts as high as 18 mph.
Friday Night
Partly cloudy, with a low around 50. West southwest wind 5 to 7 mph becoming calm in the evening.
Saturday
Sunny, with a high near 80. Calm wind becoming northwest around 6 mph in the afternoon.
Saturday Night
Clear, with a low around 59. South wind 3 to 8 mph.
Sunday
Sunny, with a high near 85. South southwest wind 10 to 15 mph, with gusts as high as 23 mph.
Sunday Night
Partly cloudy, with a low around 42. North wind 11 to 14 mph, with gusts as high as 23 mph.
Monday
Mostly sunny, with a high near 58. North wind around 10 mph, with gusts as high as 18 mph.
Monday Night
Partly cloudy, with a low around 38. East wind around 5 mph.
Tuesday
Partly sunny, with a high near 60. Southeast wind around 6 mph.
Tuesday Night
Mostly cloudy, with a low around 43. East wind 3 to 5 mph.
Wednesday
Mostly sunny, with a high near 69. East wind 6 to 9 mph.
Wednesday Night
Partly cloudy, with a low around 53. South wind 7 to 11 mph, with gusts as high as 21 mph.
Thursday
A slight chance of showers and thunderstorms. Sunny, with a high near 76. South southwest wind 13 to 17 mph, with gusts as high as 24 mph.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Waltonville IL
 38.23°N 89.03°W
Last Update:
3:57 pm CDT Mar 19, 2026
Forecast Valid:
5pm CDT Mar 19, 2026-6pm CDT Mar 26, 2026
 
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Additional Resources

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Chance of Precipitation