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

42°F

6°C

Humidity 60%
Wind Speed Calm
Barometer 30.09 in (1019.4 mb)
Dewpoint 29°F (-2°C)
Visibility 10.00 mi
Last update 13 Mar 10:56 pm CDT
Extended Forecast for

Waltonville IL

  • Tonight

    Tonight: Partly cloudy, with a low around 36. Calm wind becoming east northeast around 5 mph after midnight.

    Low: 36 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 64. East northeast wind 6 to 13 mph becoming southeast in the afternoon. Winds could gust as high as 18 mph.

    High: 64 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 53. South wind 8 to 15 mph, with gusts as high as 26 mph.

    Low: 53 °F

    Partly Cloudy

  • Sunday

    Sunday: Showers likely and possibly a thunderstorm, mainly after 4pm. Mostly cloudy, with a high near 70. Breezy, with a south wind 21 to 29 mph, with gusts as high as 41 mph. Chance of precipitation is 70%.

    High: 70 °F

    Breezy.
    Mostly Cloudy
    then Showers
    Likely

  • Sunday Night

    Sunday Night: Rain showers before 1am, then a chance of rain and snow showers between 1am and 4am, then a chance of snow showers after 4am. Some thunder is also possible. Low around 25. Breezy, with a south southwest wind 23 to 25 mph becoming west in the evening. Winds could gust as high as 43 mph. Chance of precipitation is 100%.

    Low: 25 °F

    Breezy.
    Showers then
    Rain/Snow

  • Monday

    Monday: A 20 percent chance of snow showers before 1pm. Mostly cloudy, with a high near 30. Blustery, with a west northwest wind 22 to 24 mph, with gusts as high as 36 mph.

    High: 30 °F

    Slight Chance
    Snow Showers
    and Blustery

  • Monday Night

    Monday Night: Partly cloudy, with a low around 14. Blustery, with a west northwest wind 11 to 21 mph, with gusts as high as 29 mph.

    Low: 14 °F

    Partly Cloudy
    and Blustery
    then Mostly
    Clear

  • Tuesday

    Tuesday: Sunny, with a high near 37. West northwest wind 7 to 9 mph.

    High: 37 °F

    Sunny

  • Tuesday Night

    Tuesday Night: A slight chance of rain and snow showers after 1am. Mostly cloudy, with a low around 27. South southeast wind 5 to 11 mph, with gusts as high as 21 mph.

    Low: 27 °F

    Mostly Cloudy
    then Slight
    Chance
    Rain/Snow

Detailed Forecast

Tonight
Partly cloudy, with a low around 36. Calm wind becoming east northeast around 5 mph after midnight.
Saturday
Mostly sunny, with a high near 64. East northeast wind 6 to 13 mph becoming southeast in the afternoon. Winds could gust as high as 18 mph.
Saturday Night
Partly cloudy, with a low around 53. South wind 8 to 15 mph, with gusts as high as 26 mph.
Sunday
Showers likely and possibly a thunderstorm, mainly after 4pm. Mostly cloudy, with a high near 70. Breezy, with a south wind 21 to 29 mph, with gusts as high as 41 mph. Chance of precipitation is 70%.
Sunday Night
Rain showers before 1am, then a chance of rain and snow showers between 1am and 4am, then a chance of snow showers after 4am. Some thunder is also possible. Low around 25. Breezy, with a south southwest wind 23 to 25 mph becoming west in the evening. Winds could gust as high as 43 mph. Chance of precipitation is 100%.
Monday
A 20 percent chance of snow showers before 1pm. Mostly cloudy, with a high near 30. Blustery, with a west northwest wind 22 to 24 mph, with gusts as high as 36 mph.
Monday Night
Partly cloudy, with a low around 14. Blustery, with a west northwest wind 11 to 21 mph, with gusts as high as 29 mph.
Tuesday
Sunny, with a high near 37. West northwest wind 7 to 9 mph.
Tuesday Night
A slight chance of rain and snow showers after 1am. Mostly cloudy, with a low around 27. South southeast wind 5 to 11 mph, with gusts as high as 21 mph.
Wednesday
Partly sunny, with a high near 58. South southwest wind 11 to 15 mph, with gusts as high as 23 mph.
Wednesday Night
Mostly clear, with a low around 39. South southwest wind 5 to 7 mph.
Thursday
Sunny, with a high near 67. West wind 5 to 7 mph.
Thursday Night
Mostly clear, with a low around 45. Northwest wind around 6 mph becoming south in the evening.
Friday
Mostly sunny, with a high near 67. Southwest 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:
11:21 pm CDT Mar 13, 2026
Forecast Valid:
11pm CDT Mar 13, 2026-6pm CDT Mar 20, 2026
 
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Additional Resources

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Hourly Weather Forecast

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation