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

N/A

Humidity NA
Wind Speed W 13 G 23 mph
Barometer 30.20 in
Dewpoint N/A
Visibility 10.00 mi
Last update 26 Nov 2:56 pm CST
Extended Forecast for

Waltonville IL

  • This Afternoon

    This Afternoon: Sunny, with a high near 45. West wind 14 to 16 mph, with gusts as high as 28 mph.

    High: 45 °F

    Sunny

  • Tonight

    Tonight: Increasing clouds, with a low around 31. West northwest wind 7 to 11 mph, with gusts as high as 21 mph.

    Low: 31 °F

    Increasing
    Clouds

  • Thanksgiving Day

    Thanksgiving Day: Sunny, with a high near 42. West northwest wind 8 to 13 mph, with gusts as high as 20 mph.

    High: 42 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 22. West northwest wind 3 to 6 mph.

    Low: 22 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 39. Northwest wind around 5 mph becoming calm in the afternoon.

    High: 39 °F

    Sunny

  • Friday Night

    Friday Night: A 30 percent chance of snow showers after midnight. Mostly cloudy, with a low around 28. Calm wind becoming southeast 5 to 8 mph after midnight.

    Low: 28 °F

    Mostly Cloudy
    then Chance
    Snow Showers

  • Saturday

    Saturday: Rain, possibly mixed with snow showers. High near 40. Southeast wind 9 to 14 mph, with gusts as high as 21 mph. Chance of precipitation is 90%.

    High: 40 °F

    Rain/Snow
    Likely then
    Rain/Snow

  • Saturday Night

    Saturday Night: Showers, mainly before midnight. Cloudy, with a low around 28. South wind 10 to 14 mph becoming west northwest after midnight. Winds could gust as high as 21 mph.

    Low: 28 °F

    Showers

  • Sunday

    Sunday: A slight chance of snow showers before noon. Mostly cloudy, with a high near 35. Northwest wind 9 to 14 mph, with gusts as high as 21 mph.

    High: 35 °F

    Slight Chance
    Snow Showers
    then Mostly
    Cloudy

Detailed Forecast

This Afternoon
Sunny, with a high near 45. West wind 14 to 16 mph, with gusts as high as 28 mph.
Tonight
Increasing clouds, with a low around 31. West northwest wind 7 to 11 mph, with gusts as high as 21 mph.
Thanksgiving Day
Sunny, with a high near 42. West northwest wind 8 to 13 mph, with gusts as high as 20 mph.
Thursday Night
Mostly clear, with a low around 22. West northwest wind 3 to 6 mph.
Friday
Sunny, with a high near 39. Northwest wind around 5 mph becoming calm in the afternoon.
Friday Night
A 30 percent chance of snow showers after midnight. Mostly cloudy, with a low around 28. Calm wind becoming southeast 5 to 8 mph after midnight.
Saturday
Rain, possibly mixed with snow showers. High near 40. Southeast wind 9 to 14 mph, with gusts as high as 21 mph. Chance of precipitation is 90%.
Saturday Night
Showers, mainly before midnight. Cloudy, with a low around 28. South wind 10 to 14 mph becoming west northwest after midnight. Winds could gust as high as 21 mph.
Sunday
A slight chance of snow showers before noon. Mostly cloudy, with a high near 35. Northwest wind 9 to 14 mph, with gusts as high as 21 mph.
Sunday Night
A slight chance of snow showers before midnight. Mostly cloudy, with a low around 20. North wind 5 to 8 mph.
Monday
A chance of snow showers and freezing rain. Mostly cloudy, with a high near 32. North northeast wind around 7 mph.
Monday Night
A chance of snow showers. Mostly cloudy, with a low around 20. North northeast wind around 5 mph becoming calm.
Tuesday
Mostly sunny, with a high near 35. Northwest wind 5 to 7 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:
3:26 pm CST Nov 26, 2025
Forecast Valid:
3pm CST Nov 26, 2025-6pm CST Dec 2, 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