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

46°F

8°C

Humidity 50%
Wind Speed S 14 G 23 mph
Barometer 29.92 in (1013.7 mb)
Dewpoint 28°F (-2°C)
Visibility 10.00 mi
Wind Chill40°F (4°C)
Last update 13 Mar 1:56 am CDT
Extended Forecast for

Waltonville IL

  • Overnight

    Overnight: Mostly cloudy, with a steady temperature around 44. Breezy, with a south southwest wind 14 to 20 mph, with gusts as high as 28 mph.

    Low: 44 °F

    Mostly Cloudy
    and Breezy

  • Friday

    Friday: Partly sunny, with a high near 62. Breezy, with a southwest wind 14 to 20 mph becoming west northwest in the afternoon. Winds could gust as high as 34 mph.

    High: 62 °F

    Partly Sunny
    and Breezy
    then Mostly
    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 36. West northwest wind around 6 mph becoming east after midnight.

    Low: 36 °F

    Mostly Clear

  • Saturday

    Saturday: Mostly sunny, with a high near 66. East wind 7 to 13 mph becoming south southeast in the afternoon. Winds could gust as high as 18 mph.

    High: 66 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 53. South southeast wind 8 to 13 mph, with gusts as high as 23 mph.

    Low: 53 °F

    Partly Cloudy

  • Sunday

    Sunday: Showers likely, with thunderstorms also possible after 4pm. Mostly cloudy, with a high near 71. Breezy, with a south wind 16 to 25 mph, with gusts as high as 39 mph. Chance of precipitation is 70%.

    High: 71 °F

    Breezy.
    Slight Chance
    Showers 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 26. Breezy, with a south southwest wind 22 to 25 mph becoming west after midnight. Winds could gust as high as 40 mph. Chance of precipitation is 90%.

    Low: 26 °F

    Breezy.
    Showers then
    Rain/Snow

  • Monday

    Monday: A slight chance of snow showers before 1pm. Mostly cloudy, with a high near 32. Breezy, with a west northwest wind 22 to 24 mph, with gusts as high as 39 mph.

    High: 32 °F

    Slight Chance
    Snow Showers
    and Breezy

  • Monday Night

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

    Low: 14 °F

    Partly Cloudy
    and Blustery
    then Mostly
    Clear

Detailed Forecast

Overnight
Mostly cloudy, with a steady temperature around 44. Breezy, with a south southwest wind 14 to 20 mph, with gusts as high as 28 mph.
Friday
Partly sunny, with a high near 62. Breezy, with a southwest wind 14 to 20 mph becoming west northwest in the afternoon. Winds could gust as high as 34 mph.
Friday Night
Mostly clear, with a low around 36. West northwest wind around 6 mph becoming east after midnight.
Saturday
Mostly sunny, with a high near 66. East wind 7 to 13 mph becoming south southeast in the afternoon. Winds could gust as high as 18 mph.
Saturday Night
Partly cloudy, with a low around 53. South southeast wind 8 to 13 mph, with gusts as high as 23 mph.
Sunday
Showers likely, with thunderstorms also possible after 4pm. Mostly cloudy, with a high near 71. Breezy, with a south wind 16 to 25 mph, with gusts as high as 39 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 26. Breezy, with a south southwest wind 22 to 25 mph becoming west after midnight. Winds could gust as high as 40 mph. Chance of precipitation is 90%.
Monday
A slight chance of snow showers before 1pm. Mostly cloudy, with a high near 32. Breezy, with a west northwest wind 22 to 24 mph, with gusts as high as 39 mph.
Monday Night
Mostly clear, with a low around 14. Blustery, with a northwest wind 11 to 21 mph, with gusts as high as 29 mph.
Tuesday
Mostly sunny, with a high near 36. West northwest wind around 9 mph.
Tuesday Night
A slight chance of snow showers. Mostly cloudy, with a low around 26. South southeast wind 5 to 11 mph, with gusts as high as 18 mph.
Wednesday
Mostly cloudy, with a high near 56. South southwest wind 10 to 13 mph, with gusts as high as 20 mph.
Wednesday Night
Partly cloudy, with a low around 40. Southwest wind around 7 mph.
Thursday
Mostly sunny, with a high near 68. Southwest wind 6 to 8 mph.
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ABOUT THIS FORECAST

 
Point Forecast:
Waltonville IL
 38.2°N 89.03°W
Last Update:
1:46 am CDT Mar 13, 2026
Forecast Valid:
2am CDT Mar 13, 2026-6pm CDT Mar 19, 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