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

  • This Afternoon

    This Afternoon: Sunny, with a high near 36. East wind around 6 mph.

    High: 36 °F

    Sunny

  • Tonight

    Tonight: Increasing clouds, with a low around 26. East southeast wind 5 to 7 mph.

    Low: 26 °F

    Increasing
    Clouds

  • Sunday

    Sunday: Mostly sunny, with a high near 45. Southeast wind 6 to 10 mph.

    High: 45 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 28. East wind 3 to 6 mph.

    Low: 28 °F

    Partly Cloudy

  • Monday

    Monday: Sunny, with a high near 55. Light and variable wind.

    High: 55 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 38. Calm wind becoming south southwest around 6 mph in the evening.

    Low: 38 °F

    Mostly Clear

  • Tuesday

    Tuesday: A 20 percent chance of showers after noon. Mostly sunny, with a high near 63. South southwest wind 5 to 8 mph becoming north northwest in the afternoon.

    High: 63 °F

    Mostly Sunny
    then Slight
    Chance
    Showers

  • Tuesday Night

    Tuesday Night: Showers likely. Mostly cloudy, with a low around 37. North wind 5 to 7 mph.

    Low: 37 °F

    Showers
    Likely

  • Wednesday

    Wednesday: A chance of showers, mainly before noon. Mostly cloudy, with a high near 49. Northeast wind 6 to 8 mph.

    High: 49 °F

    Chance
    Showers

Detailed Forecast

This Afternoon
Sunny, with a high near 36. East wind around 6 mph.
Tonight
Increasing clouds, with a low around 26. East southeast wind 5 to 7 mph.
Sunday
Mostly sunny, with a high near 45. Southeast wind 6 to 10 mph.
Sunday Night
Partly cloudy, with a low around 28. East wind 3 to 6 mph.
Monday
Sunny, with a high near 55. Light and variable wind.
Monday Night
Mostly clear, with a low around 38. Calm wind becoming south southwest around 6 mph in the evening.
Tuesday
A 20 percent chance of showers after noon. Mostly sunny, with a high near 63. South southwest wind 5 to 8 mph becoming north northwest in the afternoon.
Tuesday Night
Showers likely. Mostly cloudy, with a low around 37. North wind 5 to 7 mph.
Wednesday
A chance of showers, mainly before noon. Mostly cloudy, with a high near 49. Northeast wind 6 to 8 mph.
Wednesday Night
A slight chance of showers. Mostly cloudy, with a low around 35. East northeast wind around 6 mph.
Thursday
A chance of showers. Mostly cloudy, with a high near 45. East northeast wind 6 to 8 mph.
Thursday Night
A chance of showers. Mostly cloudy, with a low around 30. Northeast wind around 6 mph.
Friday
A slight chance of showers. Partly sunny, with a high near 47. Northeast wind 6 to 8 mph.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Waltonville IL
 38.23°N 89.03°W
Last Update:
1:32 pm CST Feb 7, 2026
Forecast Valid:
1pm CST Feb 7, 2026-6pm CST Feb 13, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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