National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

Mount Vernon Airport (KMVN)

Lat: 38.33°NLon: 88.85°WElev: 466ft.

Overcast

N/A

Humidity NA
Wind Speed S 7 mph
Barometer 30.12 in
Dewpoint N/A
Visibility 10.00 mi
Last update 3 Dec 2:56 am CST
Extended Forecast for

Waltonville IL

  • Overnight

    Overnight: Mostly cloudy, with a low around 24. South southwest wind 3 to 5 mph.

    Low: 24 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 41. South southwest wind 5 to 10 mph becoming light in the afternoon.

    High: 41 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: A 20 percent chance of snow before midnight. Mostly cloudy, with a low around 19. Light and variable wind becoming north 5 to 10 mph after midnight. Winds could gust as high as 18 mph.

    Low: 19 °F

    Slight Chance
    Snow then
    Mostly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 29. North wind 5 to 10 mph becoming light north northeast in the afternoon. Winds could gust as high as 18 mph.

    High: 29 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 16. Calm wind.

    Low: 16 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 41. Calm wind becoming south southwest around 6 mph.

    High: 41 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 24. Calm wind.

    Low: 24 °F

    Partly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 42. Calm wind becoming west around 6 mph.

    High: 42 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 26. Calm wind becoming northeast around 5 mph after midnight.

    Low: 26 °F

    Mostly Cloudy

Detailed Forecast

Overnight
Mostly cloudy, with a low around 24. South southwest wind 3 to 5 mph.
Wednesday
Partly sunny, with a high near 41. South southwest wind 5 to 10 mph becoming light in the afternoon.
Wednesday Night
A 20 percent chance of snow before midnight. Mostly cloudy, with a low around 19. Light and variable wind becoming north 5 to 10 mph after midnight. Winds could gust as high as 18 mph.
Thursday
Mostly sunny, with a high near 29. North wind 5 to 10 mph becoming light north northeast in the afternoon. Winds could gust as high as 18 mph.
Thursday Night
Partly cloudy, with a low around 16. Calm wind.
Friday
Mostly sunny, with a high near 41. Calm wind becoming south southwest around 6 mph.
Friday Night
Partly cloudy, with a low around 24. Calm wind.
Saturday
Partly sunny, with a high near 42. Calm wind becoming west around 6 mph.
Saturday Night
Mostly cloudy, with a low around 26. Calm wind becoming northeast around 5 mph after midnight.
Sunday
A slight chance of showers after noon. Partly sunny, with a high near 41. Northeast wind 5 to 7 mph.
Sunday Night
A slight chance of showers. Mostly cloudy, with a low around 24. North wind around 6 mph.
Monday
Partly sunny, with a high near 37. North northwest wind 5 to 7 mph becoming south southwest in the afternoon.
Monday Night
Mostly cloudy, with a low around 26. South wind 3 to 7 mph.
Tuesday
Mostly sunny, with a high near 47. West southwest wind 7 to 11 mph.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Waltonville IL
 38.23°N 89.03°W
Last Update:
3:11 am CST Dec 3, 2025
Forecast Valid:
3am CST Dec 3, 2025-6pm CST Dec 9, 2025
 
Forecast Discussion
 
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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