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.

A Few Clouds

28°F

-2°C

Humidity 66%
Wind Speed NW 8 mph
Barometer 30.39 in (1030.1 mb)
Dewpoint 18°F (-8°C)
Visibility 10.00 mi
Wind Chill20°F (-7°C)
Last update 11 Jan 6:56 am CST
Extended Forecast for

Waltonville IL

  • Today

    Today: Sunny, with a high near 39. Northwest wind 6 to 16 mph, with gusts as high as 31 mph.

    High: 39 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 26. Calm wind becoming south southwest around 6 mph after midnight.

    Low: 26 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 51. South southwest wind 7 to 10 mph.

    High: 51 °F

    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 35. South southwest wind 6 to 9 mph.

    Low: 35 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 59. South southwest wind 10 to 15 mph, with gusts as high as 22 mph.

    High: 59 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: A 20 percent chance of showers after midnight. Mostly cloudy, with a low around 39. West wind 6 to 8 mph.

    Low: 39 °F

    Mostly Cloudy
    then Slight
    Chance
    Showers

  • Wednesday

    Wednesday: A 20 percent chance of showers after noon. Mostly cloudy, with a high near 44. Northwest wind 8 to 16 mph, with gusts as high as 23 mph.

    High: 44 °F

    Partly Sunny
    then Slight
    Chance
    Showers

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 19. North northwest wind 9 to 13 mph, with gusts as high as 21 mph.

    Low: 19 °F

    Mostly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 37. North northwest wind 5 to 8 mph becoming southwest in the afternoon.

    High: 37 °F

    Mostly Sunny

Detailed Forecast

Today
Sunny, with a high near 39. Northwest wind 6 to 16 mph, with gusts as high as 31 mph.
Tonight
Mostly clear, with a low around 26. Calm wind becoming south southwest around 6 mph after midnight.
Monday
Sunny, with a high near 51. South southwest wind 7 to 10 mph.
Monday Night
Partly cloudy, with a low around 35. South southwest wind 6 to 9 mph.
Tuesday
Mostly sunny, with a high near 59. South southwest wind 10 to 15 mph, with gusts as high as 22 mph.
Tuesday Night
A 20 percent chance of showers after midnight. Mostly cloudy, with a low around 39. West wind 6 to 8 mph.
Wednesday
A 20 percent chance of showers after noon. Mostly cloudy, with a high near 44. Northwest wind 8 to 16 mph, with gusts as high as 23 mph.
Wednesday Night
Mostly cloudy, with a low around 19. North northwest wind 9 to 13 mph, with gusts as high as 21 mph.
Thursday
Mostly sunny, with a high near 37. North northwest wind 5 to 8 mph becoming southwest in the afternoon.
Thursday Night
Mostly cloudy, with a low around 26. South wind 5 to 10 mph, with gusts as high as 18 mph.
Friday
Partly sunny, with a high near 43. West wind 9 to 14 mph, with gusts as high as 21 mph.
Friday Night
Mostly cloudy, with a low around 23. West wind 6 to 9 mph.
Saturday
Partly sunny, with a high near 34. West wind 7 to 13 mph, with gusts as high as 18 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:
5:26 am CST Jan 11, 2026
Forecast Valid:
7am CST Jan 11, 2026-6pm CST Jan 17, 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