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.

Fair

61°F

16°C

Humidity 35%
Wind Speed SW 13 G 18 mph
Barometer 30.24 in (1024.7 mb)
Dewpoint 33°F (1°C)
Visibility 10.00 mi
Last update 19 Apr 12:56 pm CDT
Extended Forecast for

Waltonville IL

  • This Afternoon

    This Afternoon: Sunny, with a steady temperature around 63. North wind 7 to 13 mph becoming west. Winds could gust as high as 20 mph.

    High: 63 °F

    Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 42. West wind around 6 mph becoming calm in the evening.

    Low: 42 °F

    Partly Cloudy

  • Monday

    Monday: Sunny, with a high near 66. Calm wind becoming east around 6 mph.

    High: 66 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 49. Calm wind becoming south 5 to 7 mph in the evening.

    Low: 49 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 77. Southwest wind 7 to 16 mph, with gusts as high as 23 mph.

    High: 77 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Clear, with a low around 55. Southwest wind 7 to 11 mph, with gusts as high as 20 mph.

    Low: 55 °F

    Clear

  • Wednesday

    Wednesday: Sunny, with a high near 78. Southwest wind 6 to 9 mph.

    High: 78 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 57. South wind around 6 mph.

    Low: 57 °F

    Mostly Clear

  • Thursday

    Thursday: Mostly sunny, with a high near 81. South wind 7 to 16 mph, with gusts as high as 24 mph.

    High: 81 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
Sunny, with a steady temperature around 63. North wind 7 to 13 mph becoming west. Winds could gust as high as 20 mph.
Tonight
Partly cloudy, with a low around 42. West wind around 6 mph becoming calm in the evening.
Monday
Sunny, with a high near 66. Calm wind becoming east around 6 mph.
Monday Night
Mostly clear, with a low around 49. Calm wind becoming south 5 to 7 mph in the evening.
Tuesday
Mostly sunny, with a high near 77. Southwest wind 7 to 16 mph, with gusts as high as 23 mph.
Tuesday Night
Clear, with a low around 55. Southwest wind 7 to 11 mph, with gusts as high as 20 mph.
Wednesday
Sunny, with a high near 78. Southwest wind 6 to 9 mph.
Wednesday Night
Mostly clear, with a low around 57. South wind around 6 mph.
Thursday
Mostly sunny, with a high near 81. South wind 7 to 16 mph, with gusts as high as 24 mph.
Thursday Night
A chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 63. South wind 11 to 14 mph, with gusts as high as 22 mph.
Friday
Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 77. South southwest wind 13 to 15 mph, with gusts as high as 22 mph.
Friday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 54. West southwest wind 6 to 8 mph becoming north northwest after midnight.
Saturday
A chance of showers and thunderstorms. Mostly sunny, with a high near 73. North northwest wind 7 to 10 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:
12:12 pm CDT Apr 19, 2026
Forecast Valid:
1pm CDT Apr 19, 2026-6pm CDT Apr 25, 2026
 
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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