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

  • Overnight

    Overnight: Mostly cloudy, with a low around 21. North northeast wind around 6 mph.

    Low: 21 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly cloudy, then gradually becoming sunny, with a high near 31. North wind 6 to 10 mph.

    High: 31 °F

    Decreasing
    Clouds

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 13. North wind around 6 mph becoming calm in the evening.

    Low: 13 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly cloudy, with a high near 34. Calm wind becoming south southwest 5 to 8 mph in the afternoon.

    High: 34 °F

    Mostly Cloudy

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 28. South wind around 7 mph becoming west after midnight.

    Low: 28 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 49. West wind 7 to 13 mph becoming north northwest in the afternoon. Winds could gust as high as 20 mph.

    High: 49 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 24. North northwest wind 5 to 7 mph.

    Low: 24 °F

    Partly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 39. North northeast wind around 6 mph becoming southeast in the afternoon.

    High: 39 °F

    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 27. South southeast wind 5 to 7 mph.

    Low: 27 °F

    Partly Cloudy

Detailed Forecast

Overnight
Mostly cloudy, with a low around 21. North northeast wind around 6 mph.
Wednesday
Mostly cloudy, then gradually becoming sunny, with a high near 31. North wind 6 to 10 mph.
Wednesday Night
Partly cloudy, with a low around 13. North wind around 6 mph becoming calm in the evening.
Thursday
Mostly cloudy, with a high near 34. Calm wind becoming south southwest 5 to 8 mph in the afternoon.
Thursday Night
Partly cloudy, with a low around 28. South wind around 7 mph becoming west after midnight.
Friday
Mostly sunny, with a high near 49. West wind 7 to 13 mph becoming north northwest in the afternoon. Winds could gust as high as 20 mph.
Friday Night
Partly cloudy, with a low around 24. North northwest wind 5 to 7 mph.
Saturday
Sunny, with a high near 39. North northeast wind around 6 mph becoming southeast in the afternoon.
Saturday Night
Partly cloudy, with a low around 27. South southeast wind 5 to 7 mph.
Sunday
Mostly sunny, with a high near 50. South southeast wind 5 to 8 mph becoming north in the afternoon.
Sunday Night
Partly cloudy, with a low around 26. Light east northeast wind.
Monday
Mostly sunny, with a high near 49. Calm wind becoming south around 6 mph in the afternoon.
Monday Night
Mostly cloudy, with a low around 35. South wind 3 to 6 mph.
Tuesday
A slight chance of showers. Partly sunny, with a high near 57. South wind 6 to 9 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:
1:26 am CST Feb 4, 2026
Forecast Valid:
3am CST Feb 4, 2026-6pm CST Feb 10, 2026
 
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