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.

Fair

29°F

-2°C

Humidity 96%
Wind Speed N 3 mph
Barometer 30.06 in (1018.8 mb)
Dewpoint 28°F (-2°C)
Visibility 10.00 mi
Last update 28 Feb 6:56 am CST
Extended Forecast for

Waltonville IL

  • Today

    Today: A slight chance of showers between 2pm and 3pm. Increasing clouds, with a high near 65. Calm wind becoming east 5 to 7 mph in the morning. Chance of precipitation is 20%.

    High: 65 °F

    Sunny then
    Slight Chance
    Showers

  • Tonight

    Tonight: A 20 percent chance of showers before 10pm. Mostly cloudy, then gradually becoming mostly clear, with a low around 32. Light and variable wind becoming north 5 to 10 mph in the evening. Winds could gust as high as 20 mph.

    Low: 32 °F

    Slight Chance
    Showers then
    Partly Cloudy

  • Sunday

    Sunday: Increasing clouds, with a high near 47. North northeast wind 8 to 11 mph, with gusts as high as 18 mph.

    High: 47 °F

    Increasing
    Clouds

  • Sunday Night

    Sunday Night: A chance of snow showers before midnight, then rain and snow showers likely. Cloudy, with a low around 32. East northeast wind 8 to 10 mph, with gusts as high as 18 mph. Chance of precipitation is 70%.

    Low: 32 °F

    Chance Snow
    Showers then
    Rain/Snow
    Likely

  • Monday

    Monday: A chance of rain and snow showers before 9am, then a chance of rain showers between 9am and noon. Cloudy, with a high near 43. East wind 7 to 11 mph, with gusts as high as 18 mph. Chance of precipitation is 50%.

    High: 43 °F

    Chance
    Rain/Snow
    then Cloudy

  • Monday Night

    Monday Night: Showers likely, mainly after midnight. Cloudy, with a low around 38. East wind 6 to 10 mph becoming south after midnight. Winds could gust as high as 21 mph. Chance of precipitation is 60%.

    Low: 38 °F

    Showers
    Likely

  • Tuesday

    Tuesday: Showers likely and possibly a thunderstorm. Cloudy, with a high near 62. South southwest wind 10 to 14 mph, with gusts as high as 23 mph. Chance of precipitation is 70%.

    High: 62 °F

    Showers
    Likely

  • Tuesday Night

    Tuesday Night: Showers likely, with thunderstorms also possible after midnight. Cloudy, with a low around 52. South southwest wind around 9 mph becoming southeast after midnight.

    Low: 52 °F

    Showers
    Likely

  • Wednesday

    Wednesday: Showers likely and possibly a thunderstorm. Cloudy, with a high near 66. South wind 9 to 11 mph, with gusts as high as 18 mph.

    High: 66 °F

    Showers
    Likely

Detailed Forecast

Today
A slight chance of showers between 2pm and 3pm. Increasing clouds, with a high near 65. Calm wind becoming east 5 to 7 mph in the morning. Chance of precipitation is 20%.
Tonight
A 20 percent chance of showers before 10pm. Mostly cloudy, then gradually becoming mostly clear, with a low around 32. Light and variable wind becoming north 5 to 10 mph in the evening. Winds could gust as high as 20 mph.
Sunday
Increasing clouds, with a high near 47. North northeast wind 8 to 11 mph, with gusts as high as 18 mph.
Sunday Night
A chance of snow showers before midnight, then rain and snow showers likely. Cloudy, with a low around 32. East northeast wind 8 to 10 mph, with gusts as high as 18 mph. Chance of precipitation is 70%.
Monday
A chance of rain and snow showers before 9am, then a chance of rain showers between 9am and noon. Cloudy, with a high near 43. East wind 7 to 11 mph, with gusts as high as 18 mph. Chance of precipitation is 50%.
Monday Night
Showers likely, mainly after midnight. Cloudy, with a low around 38. East wind 6 to 10 mph becoming south after midnight. Winds could gust as high as 21 mph. Chance of precipitation is 60%.
Tuesday
Showers likely and possibly a thunderstorm. Cloudy, with a high near 62. South southwest wind 10 to 14 mph, with gusts as high as 23 mph. Chance of precipitation is 70%.
Tuesday Night
Showers likely, with thunderstorms also possible after midnight. Cloudy, with a low around 52. South southwest wind around 9 mph becoming southeast after midnight.
Wednesday
Showers likely and possibly a thunderstorm. Cloudy, with a high near 66. South wind 9 to 11 mph, with gusts as high as 18 mph.
Wednesday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 53. South southwest wind 8 to 10 mph, with gusts as high as 18 mph.
Thursday
A chance of showers. Partly sunny, with a high near 69. South southwest wind 8 to 11 mph, with gusts as high as 18 mph.
Thursday Night
A chance of showers. Mostly cloudy, with a low around 56. South wind around 8 mph.
Friday
Showers and thunderstorms likely. Mostly cloudy, with a high near 72. South southwest wind 8 to 13 mph, with gusts as high as 20 mph.
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ABOUT THIS FORECAST

 
Point Forecast:
Waltonville IL
 38.23°N 89.03°W
Last Update:
6:51 am CST Feb 28, 2026
Forecast Valid:
6am CST Feb 28, 2026-6pm CST Mar 6, 2026
 
Forecast Discussion
 
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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