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

27°F

-3°C

Humidity 69%
Wind Speed SW 6 mph
Barometer 30.07 in (1019.2 mb)
Dewpoint 18°F (-8°C)
Visibility 10.00 mi
Wind Chill20°F (-7°C)
Last update 31 Dec 3:56 am CST
Extended Forecast for

Waltonville IL

  • Today

    Today: Partly sunny, with a high near 42. North northwest wind 5 to 10 mph becoming west southwest in the afternoon.

    High: 42 °F

    Partly Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 26. West southwest wind around 5 mph becoming calm in the evening.

    Low: 26 °F

    Partly Cloudy

  • New Year's Day

    New Year's Day: Mostly sunny, with a high near 39. Northeast wind around 5 mph becoming calm in the afternoon.

    High: 39 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 28. Calm wind.

    Low: 28 °F

    Mostly Cloudy

  • Friday

    Friday: Mostly cloudy, with a high near 43. Calm wind becoming northeast around 6 mph in the morning.

    High: 43 °F

    Mostly Cloudy

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 26. North northeast wind 3 to 5 mph.

    Low: 26 °F

    Mostly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 40. North northeast wind 3 to 6 mph.

    High: 40 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 24. Calm wind.

    Low: 24 °F

    Mostly Clear

  • Sunday

    Sunday: Partly sunny, with a high near 45. Calm wind becoming south around 6 mph in the afternoon.

    High: 45 °F

    Partly Sunny

Detailed Forecast

Today
Partly sunny, with a high near 42. North northwest wind 5 to 10 mph becoming west southwest in the afternoon.
Tonight
Partly cloudy, with a low around 26. West southwest wind around 5 mph becoming calm in the evening.
New Year's Day
Mostly sunny, with a high near 39. Northeast wind around 5 mph becoming calm in the afternoon.
Thursday Night
Mostly cloudy, with a low around 28. Calm wind.
Friday
Mostly cloudy, with a high near 43. Calm wind becoming northeast around 6 mph in the morning.
Friday Night
Mostly cloudy, with a low around 26. North northeast wind 3 to 5 mph.
Saturday
Mostly sunny, with a high near 40. North northeast wind 3 to 6 mph.
Saturday Night
Mostly clear, with a low around 24. Calm wind.
Sunday
Partly sunny, with a high near 45. Calm wind becoming south around 6 mph in the afternoon.
Sunday Night
Partly cloudy, with a low around 33. South wind around 6 mph.
Monday
Partly sunny, with a high near 55. South southwest wind 6 to 9 mph.
Monday Night
Mostly cloudy, with a low around 37. South wind around 5 mph becoming west after midnight.
Tuesday
Partly sunny, with a high near 53. West wind 5 to 7 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:
4:21 am CST Dec 31, 2025
Forecast Valid:
4am CST Dec 31, 2025-6pm CST Jan 6, 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