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.

N/A

Humidity NA
Wind Speed NA
Barometer NA
Dewpoint N/A
Visibility NA
Last update *** Not a current observation ***
Extended Forecast for

Waltonville IL

  • Today

    Today: Mostly cloudy, with a high near 34. Calm wind becoming south 5 to 9 mph in the morning.

    High: 34 °F

    Mostly Cloudy

  • Tonight

    Tonight: Mostly cloudy, with a low around 27. South wind around 6 mph becoming west after midnight.

    Low: 27 °F

    Mostly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 47. West wind 6 to 14 mph becoming north northwest in the afternoon. Winds could gust as high as 21 mph.

    High: 47 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly cloudy, then gradually becoming mostly clear, with a low around 23. North northwest wind 6 to 10 mph.

    Low: 23 °F

    Decreasing
    Clouds

  • Saturday

    Saturday: Sunny, with a high near 33. North northeast wind around 6 mph becoming light and variable in the afternoon.

    High: 33 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 23. South southeast wind 3 to 6 mph.

    Low: 23 °F

    Mostly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 52. South wind 3 to 8 mph.

    High: 52 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 29. Calm wind.

    Low: 29 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 57. Calm wind becoming south southwest around 5 mph.

    High: 57 °F

    Sunny

Detailed Forecast

Today
Mostly cloudy, with a high near 34. Calm wind becoming south 5 to 9 mph in the morning.
Tonight
Mostly cloudy, with a low around 27. South wind around 6 mph becoming west after midnight.
Friday
Mostly sunny, with a high near 47. West wind 6 to 14 mph becoming north northwest in the afternoon. Winds could gust as high as 21 mph.
Friday Night
Mostly cloudy, then gradually becoming mostly clear, with a low around 23. North northwest wind 6 to 10 mph.
Saturday
Sunny, with a high near 33. North northeast wind around 6 mph becoming light and variable in the afternoon.
Saturday Night
Mostly cloudy, with a low around 23. South southeast wind 3 to 6 mph.
Sunday
Mostly sunny, with a high near 52. South wind 3 to 8 mph.
Sunday Night
Mostly clear, with a low around 29. Calm wind.
Monday
Sunny, with a high near 57. Calm wind becoming south southwest around 5 mph.
Monday Night
Partly cloudy, with a low around 40. South southwest wind 3 to 6 mph.
Tuesday
A slight chance of showers. Partly sunny, with a high near 62. South southwest wind 6 to 9 mph.
Tuesday Night
A chance of showers. Mostly cloudy, with a low around 41. South southwest wind around 7 mph becoming northwest after midnight.
Wednesday
A chance of showers. Mostly cloudy, with a high near 56. North wind 7 to 9 mph becoming south in the afternoon.
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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:
5:12 am CST Feb 5, 2026
Forecast Valid:
6am CST Feb 5, 2026-6pm CST Feb 11, 2026
 
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Additional Resources

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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