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

50°F

10°C

Humidity 100%
Wind Speed Calm
Barometer 29.95 in (1014.7 mb)
Dewpoint 50°F (10°C)
Visibility 10.00 mi
Last update 12 Oct 10:56 pm CDT
Extended Forecast for

Waltonville IL

  • Tonight

    Tonight: Patchy fog after 5am. Otherwise, mostly clear, with a low around 51. Calm wind.

    Low: 51 °F

    Patchy Fog

  • Columbus Day

    Columbus Day: Patchy fog before 8am. Otherwise, mostly sunny, with a high near 82. Light east southeast wind.

    High: 82 °F

    Patchy Fog
    then Partly
    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 54. Calm wind.

    Low: 54 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Sunny, with a high near 82. Calm wind becoming east northeast around 6 mph in the afternoon.

    High: 82 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 56. Light east northeast wind.

    Low: 56 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 80. Calm wind becoming north northeast 5 to 7 mph in the morning.

    High: 80 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Clear, with a low around 53. Northeast wind around 6 mph becoming calm in the evening.

    Low: 53 °F

    Clear

  • Thursday

    Thursday: Sunny, with a high near 78. East southeast wind 5 to 9 mph.

    High: 78 °F

    Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 51. East southeast wind 5 to 7 mph.

    Low: 51 °F

    Partly Cloudy

Detailed Forecast

Tonight
Patchy fog after 5am. Otherwise, mostly clear, with a low around 51. Calm wind.
Columbus Day
Patchy fog before 8am. Otherwise, mostly sunny, with a high near 82. Light east southeast wind.
Monday Night
Partly cloudy, with a low around 54. Calm wind.
Tuesday
Sunny, with a high near 82. Calm wind becoming east northeast around 6 mph in the afternoon.
Tuesday Night
Mostly clear, with a low around 56. Light east northeast wind.
Wednesday
Sunny, with a high near 80. Calm wind becoming north northeast 5 to 7 mph in the morning.
Wednesday Night
Clear, with a low around 53. Northeast wind around 6 mph becoming calm in the evening.
Thursday
Sunny, with a high near 78. East southeast wind 5 to 9 mph.
Thursday Night
Partly cloudy, with a low around 51. East southeast wind 5 to 7 mph.
Friday
Mostly sunny, with a high near 83. South wind 6 to 11 mph.
Friday Night
Partly cloudy, with a low around 62. South wind 6 to 10 mph.
Saturday
A chance of showers and thunderstorms. Mostly sunny, with a high near 80. Southwest wind 8 to 14 mph, with gusts as high as 18 mph.
Saturday Night
A chance of showers. Partly cloudy, with a low around 52. Southwest wind 6 to 10 mph.
Sunday
A chance of showers. Sunny, with a high near 74. West wind 7 to 14 mph.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Waltonville IL
 38.23°N 89.03°W
Last Update:
10:31 pm CDT Oct 12, 2025
Forecast Valid:
11pm CDT Oct 12, 2025-6pm CDT Oct 19, 2025
 
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Additional Resources

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Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation