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

23°F

-5°C

Humidity 68%
Wind Speed W 9 G 18 mph
Barometer 30.35 in (1028.9 mb)
Dewpoint 14°F (-10°C)
Visibility 10.00 mi
Wind Chill13°F (-11°C)
Last update 29 Dec 5:56 pm CST
Extended Forecast for

Waltonville IL

  • Tonight

    Tonight: Mostly cloudy, then gradually becoming mostly clear, with a low around 16. Northwest wind 8 to 14 mph, with gusts as high as 23 mph.

    Low: 16 °F

    Decreasing
    Clouds

  • Tuesday

    Tuesday: Sunny, with a high near 35. West northwest wind 6 to 9 mph becoming southwest in the afternoon.

    High: 35 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 26. Southwest wind around 6 mph.

    Low: 26 °F

    Mostly Clear

  • Wednesday

    Wednesday: Partly sunny, with a high near 42. West northwest wind 6 to 10 mph.

    High: 42 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 26. Light and variable wind.

    Low: 26 °F

    Partly Cloudy

  • New Year's Day

    New Year's Day: Mostly sunny, with a high near 40. Light and variable wind becoming north around 6 mph.

    High: 40 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 29. Calm wind.

    Low: 29 °F

    Mostly Cloudy

  • Friday

    Friday: Mostly cloudy, with a high near 47. Calm wind becoming east southeast around 6 mph in the morning.

    High: 47 °F

    Mostly Cloudy

  • Friday Night

    Friday Night: A slight chance of showers before midnight. Mostly cloudy, with a low around 31. North northeast wind 3 to 5 mph.

    Low: 31 °F

    Slight Chance
    Showers then
    Mostly Cloudy

Detailed Forecast

Tonight
Mostly cloudy, then gradually becoming mostly clear, with a low around 16. Northwest wind 8 to 14 mph, with gusts as high as 23 mph.
Tuesday
Sunny, with a high near 35. West northwest wind 6 to 9 mph becoming southwest in the afternoon.
Tuesday Night
Mostly clear, with a low around 26. Southwest wind around 6 mph.
Wednesday
Partly sunny, with a high near 42. West northwest wind 6 to 10 mph.
Wednesday Night
Partly cloudy, with a low around 26. Light and variable wind.
New Year's Day
Mostly sunny, with a high near 40. Light and variable wind becoming north around 6 mph.
Thursday Night
Mostly cloudy, with a low around 29. Calm wind.
Friday
Mostly cloudy, with a high near 47. Calm wind becoming east southeast around 6 mph in the morning.
Friday Night
A slight chance of showers before midnight. Mostly cloudy, with a low around 31. North northeast wind 3 to 5 mph.
Saturday
Mostly sunny, with a high near 44. North wind 3 to 7 mph.
Saturday Night
Partly cloudy, with a low around 28. Calm wind.
Sunday
Mostly sunny, with a high near 48. Calm wind becoming south 5 to 7 mph in the morning.
Sunday Night
Partly cloudy, with a low around 33. Southwest wind around 6 mph.
Monday
Mostly sunny, with a high near 51. West wind 6 to 9 mph.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Waltonville IL
 38.23°N 89.03°W
Last Update:
5:06 pm CST Dec 29, 2025
Forecast Valid:
6pm CST Dec 29, 2025-6pm CST Jan 5, 2026
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation