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.

N/A

Humidity NA
Wind Speed NA
Barometer NA
Dewpoint N/A
Visibility NA
Last update *** Not a current observation ***
Extended Forecast for

Waltonville IL

  • Tonight

    Tonight: Showers. Low around 43. East northeast wind 6 to 9 mph. Chance of precipitation is 100%.

    Low: 43 °F

    Showers

  • Sunday

    Sunday: A 40 percent chance of showers before 9am. Cloudy, then gradually becoming mostly sunny, with a high near 58. North northeast wind 6 to 11 mph.

    High: 58 °F

    Chance
    Showers then
    Partly Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 37. Light and variable wind.

    Low: 37 °F

    Mostly Clear

  • Washington's Birthday

    Washington's Birthday: Mostly sunny, with a high near 61. Calm wind becoming south 5 to 8 mph in the morning.

    High: 61 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 43. South wind around 6 mph.

    Low: 43 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Mostly cloudy, with a high near 64. South wind 6 to 16 mph, with gusts as high as 24 mph.

    High: 64 °F

    Mostly Cloudy

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 58. Breezy, with a south southwest wind 16 to 21 mph, with gusts as high as 32 mph.

    Low: 58 °F

    Mostly Cloudy
    and Breezy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 71. West southwest wind 13 to 18 mph, with gusts as high as 30 mph.

    High: 71 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 48. South southwest wind 7 to 11 mph, with gusts as high as 20 mph.

    Low: 48 °F

    Mostly Clear

Detailed Forecast

Tonight
Showers. Low around 43. East northeast wind 6 to 9 mph. Chance of precipitation is 100%.
Sunday
A 40 percent chance of showers before 9am. Cloudy, then gradually becoming mostly sunny, with a high near 58. North northeast wind 6 to 11 mph.
Sunday Night
Mostly clear, with a low around 37. Light and variable wind.
Washington's Birthday
Mostly sunny, with a high near 61. Calm wind becoming south 5 to 8 mph in the morning.
Monday Night
Mostly cloudy, with a low around 43. South wind around 6 mph.
Tuesday
Mostly cloudy, with a high near 64. South wind 6 to 16 mph, with gusts as high as 24 mph.
Tuesday Night
Mostly cloudy, with a low around 58. Breezy, with a south southwest wind 16 to 21 mph, with gusts as high as 32 mph.
Wednesday
Mostly sunny, with a high near 71. West southwest wind 13 to 18 mph, with gusts as high as 30 mph.
Wednesday Night
Mostly clear, with a low around 48. South southwest wind 7 to 11 mph, with gusts as high as 20 mph.
Thursday
A chance of showers, mainly after noon. Mostly sunny, with a high near 70. South southwest wind 7 to 14 mph, with gusts as high as 21 mph.
Thursday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 43. South southwest wind 7 to 10 mph becoming west northwest after midnight. Winds could gust as high as 18 mph.
Friday
A slight chance of showers. Mostly sunny, with a high near 56. West northwest wind 7 to 10 mph.
Friday Night
A slight chance of showers. Partly cloudy, with a low around 32. Northwest wind around 7 mph.
Saturday
Mostly sunny, with a high near 50. Northwest wind 6 to 9 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:
11:36 pm CST Feb 14, 2026
Forecast Valid:
11pm CST Feb 14, 2026-6pm CST Feb 21, 2026
 
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Additional Resources

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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