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

  • Today

    Today: Sunny, with a high near 34. North northeast wind around 6 mph becoming calm in the afternoon.

    High: 34 °F

    Sunny

  • Tonight

    Tonight: Mostly cloudy, with a low around 24. Calm wind becoming south southeast around 6 mph in the evening.

    Low: 24 °F

    Mostly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 43. South southeast wind 6 to 9 mph.

    High: 43 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 27. East southeast wind around 5 mph becoming calm in the evening.

    Low: 27 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 54. Light and variable wind.

    High: 54 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 39. Calm wind becoming south southwest around 6 mph after midnight.

    Low: 39 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 65. Southwest wind 6 to 9 mph.

    High: 65 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Showers likely. Mostly cloudy, with a low around 39. Southwest wind around 7 mph becoming north after midnight.

    Low: 39 °F

    Showers
    Likely

  • Wednesday

    Wednesday: A chance of showers, mainly before noon. Mostly cloudy, with a high near 50. North wind 6 to 9 mph.

    High: 50 °F

    Chance
    Showers

Detailed Forecast

Today
Sunny, with a high near 34. North northeast wind around 6 mph becoming calm in the afternoon.
Tonight
Mostly cloudy, with a low around 24. Calm wind becoming south southeast around 6 mph in the evening.
Sunday
Mostly sunny, with a high near 43. South southeast wind 6 to 9 mph.
Sunday Night
Mostly clear, with a low around 27. East southeast wind around 5 mph becoming calm in the evening.
Monday
Sunny, with a high near 54. Light and variable wind.
Monday Night
Mostly clear, with a low around 39. Calm wind becoming south southwest around 6 mph after midnight.
Tuesday
Mostly sunny, with a high near 65. Southwest wind 6 to 9 mph.
Tuesday Night
Showers likely. Mostly cloudy, with a low around 39. Southwest wind around 7 mph becoming north after midnight.
Wednesday
A chance of showers, mainly before noon. Mostly cloudy, with a high near 50. North wind 6 to 9 mph.
Wednesday Night
A slight chance of showers. Mostly cloudy, with a low around 32. Northeast wind around 6 mph.
Thursday
A chance of showers. Mostly cloudy, with a high near 48. East wind 6 to 8 mph.
Thursday Night
A chance of showers. Mostly cloudy, with a low around 34. East northeast wind 5 to 7 mph.
Friday
A chance of showers. Mostly cloudy, with a high near 48. East northeast wind 7 to 9 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:
3:16 am CST Feb 7, 2026
Forecast Valid:
4am 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