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

  • Overnight

    Overnight: Partly cloudy, with a low around 29. North northwest wind 6 to 8 mph.

    Low: 29 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Sunny, with a high near 48. North northwest wind 5 to 8 mph.

    High: 48 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Increasing clouds, with a low around 29. Light and variable wind.

    Low: 29 °F

    Increasing
    Clouds

  • Thursday

    Thursday: Cloudy, with a high near 46. Calm wind becoming southeast around 5 mph.

    High: 46 °F

    Cloudy

  • Thursday Night

    Thursday Night: A 20 percent chance of showers before midnight. Mostly cloudy, with a low around 32. Light east wind.

    Low: 32 °F

    Slight Chance
    Showers then
    Mostly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 52. Calm wind becoming southeast around 6 mph.

    High: 52 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 36. Light east southeast wind.

    Low: 36 °F

    Mostly Cloudy

  • Saturday

    Saturday: A chance of showers, mainly after noon. Cloudy, with a high near 51. East wind 3 to 8 mph.

    High: 51 °F

    Chance
    Showers

  • Saturday Night

    Saturday Night: Showers likely. Cloudy, with a low around 42. East wind 6 to 8 mph.

    Low: 42 °F

    Showers
    Likely

Detailed Forecast

Overnight
Partly cloudy, with a low around 29. North northwest wind 6 to 8 mph.
Wednesday
Sunny, with a high near 48. North northwest wind 5 to 8 mph.
Wednesday Night
Increasing clouds, with a low around 29. Light and variable wind.
Thursday
Cloudy, with a high near 46. Calm wind becoming southeast around 5 mph.
Thursday Night
A 20 percent chance of showers before midnight. Mostly cloudy, with a low around 32. Light east wind.
Friday
Mostly sunny, with a high near 52. Calm wind becoming southeast around 6 mph.
Friday Night
Mostly cloudy, with a low around 36. Light east southeast wind.
Saturday
A chance of showers, mainly after noon. Cloudy, with a high near 51. East wind 3 to 8 mph.
Saturday Night
Showers likely. Cloudy, with a low around 42. East wind 6 to 8 mph.
Sunday
A chance of showers, mainly before noon. Partly sunny, with a high near 55. North northwest wind 7 to 10 mph.
Sunday Night
Mostly clear, with a low around 35. North northwest wind around 6 mph becoming calm in the evening.
Washington's Birthday
Sunny, with a high near 59. Calm wind becoming south southeast 5 to 7 mph in the morning.
Monday Night
Mostly cloudy, with a low around 42. South southeast wind around 6 mph.
Tuesday
Partly sunny, with a high near 63. South wind 7 to 15 mph, with gusts as high as 22 mph.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Waltonville IL
 38.23°N 89.03°W
Last Update:
10:07 pm CST Feb 10, 2026
Forecast Valid:
12am CST Feb 11, 2026-6pm CST Feb 17, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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