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

60°F

16°C

Humidity 26%
Wind Speed Vrbl 3 mph
Barometer 29.96 in (1015.0 mb)
Dewpoint 25°F (-4°C)
Visibility 10.00 mi
Last update 13 Mar 5:56 pm CDT
Extended Forecast for

Waltonville IL

  • Tonight

    Tonight: Mostly clear, with a low around 36. West northwest wind 5 to 8 mph becoming calm in the evening.

    Low: 36 °F

    Mostly Clear

  • Saturday

    Saturday: Mostly sunny, with a high near 64. East wind 6 to 11 mph becoming south southeast in the afternoon. Winds could gust as high as 18 mph.

    High: 64 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Increasing clouds, with a low around 53. South southeast wind 8 to 14 mph, with gusts as high as 24 mph.

    Low: 53 °F

    Increasing
    Clouds

  • Sunday

    Sunday: Showers likely and possibly a thunderstorm, mainly after 4pm. Mostly cloudy, with a high near 70. Breezy, with a south wind 18 to 23 mph increasing to 24 to 29 mph in the afternoon. Winds could gust 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
Mostly clear, with a low around 36. West northwest wind 5 to 8 mph becoming calm in the evening.
Saturday
Mostly sunny, with a high near 64. East wind 6 to 11 mph becoming south southeast in the afternoon. Winds could gust as high as 18 mph.
Saturday Night
Increasing clouds, with a low around 53. South southeast wind 8 to 14 mph, with gusts as high as 24 mph.
Sunday
Showers likely and possibly a thunderstorm, mainly after 4pm. Mostly cloudy, with a high near 70. Breezy, with a south wind 18 to 23 mph increasing to 24 to 29 mph in the afternoon. Winds could gust 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.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Waltonville IL
 38.23°N 89.03°W
Last Update:
1:26 pm CDT Mar 13, 2026
Forecast Valid:
6pm CDT Mar 13, 2026-6pm CDT Mar 20, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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