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

31°F

-1°C

Humidity 72%
Wind Speed N 5 mph
Barometer 30.12 in (1020.6 mb)
Dewpoint 23°F (-5°C)
Visibility 10.00 mi
Wind Chill26°F (-3°C)
Last update 21 Feb 4:56 am CST
Extended Forecast for

Waltonville IL

  • Today

    Today: A chance of snow showers before 11am, then a chance of sprinkles and flurries between 11am and 1pm. Partly sunny, with a high near 41. North northwest wind 5 to 9 mph. Chance of precipitation is 20%.

    High: 41 °F

    Chance
    Sprinkles/Snow

  • Tonight

    Tonight: Mostly clear, with a low around 22. Northwest wind 7 to 15 mph, with gusts as high as 24 mph.

    Low: 22 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 33. Breezy, with a northwest wind 15 to 21 mph, with gusts as high as 29 mph.

    High: 33 °F

    Sunny and
    Breezy

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 16. Northwest wind around 15 mph, with gusts as high as 25 mph.

    Low: 16 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 34. Northwest wind 7 to 15 mph, with gusts as high as 24 mph.

    High: 34 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 17. Northwest wind around 5 mph becoming calm in the evening.

    Low: 17 °F

    Mostly Clear

  • Tuesday

    Tuesday: Partly sunny, with a high near 48. South southwest wind 5 to 15 mph, with gusts as high as 23 mph.

    High: 48 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 39. South southwest wind 11 to 13 mph, with gusts as high as 22 mph.

    Low: 39 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 60. Southwest wind 11 to 14 mph, with gusts as high as 21 mph.

    High: 60 °F

    Partly Sunny

Detailed Forecast

Today
A chance of snow showers before 11am, then a chance of sprinkles and flurries between 11am and 1pm. Partly sunny, with a high near 41. North northwest wind 5 to 9 mph. Chance of precipitation is 20%.
Tonight
Mostly clear, with a low around 22. Northwest wind 7 to 15 mph, with gusts as high as 24 mph.
Sunday
Sunny, with a high near 33. Breezy, with a northwest wind 15 to 21 mph, with gusts as high as 29 mph.
Sunday Night
Mostly clear, with a low around 16. Northwest wind around 15 mph, with gusts as high as 25 mph.
Monday
Sunny, with a high near 34. Northwest wind 7 to 15 mph, with gusts as high as 24 mph.
Monday Night
Mostly clear, with a low around 17. Northwest wind around 5 mph becoming calm in the evening.
Tuesday
Partly sunny, with a high near 48. South southwest wind 5 to 15 mph, with gusts as high as 23 mph.
Tuesday Night
Mostly cloudy, with a low around 39. South southwest wind 11 to 13 mph, with gusts as high as 22 mph.
Wednesday
Partly sunny, with a high near 60. Southwest wind 11 to 14 mph, with gusts as high as 21 mph.
Wednesday Night
A chance of showers. Mostly cloudy, with a low around 38. South southwest wind 8 to 10 mph becoming north northwest after midnight.
Thursday
A chance of showers. Mostly sunny, with a high near 53. West northwest wind 6 to 10 mph.
Thursday Night
Mostly clear, with a low around 31. Northwest wind around 6 mph becoming southwest after midnight.
Friday
Sunny, with a high near 59. South southwest wind 6 to 10 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:
4:26 am CST Feb 21, 2026
Forecast Valid:
5am CST Feb 21, 2026-6pm CST Feb 27, 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