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

73°F

23°C

Humidity 53%
Wind Speed Vrbl 5 mph
Barometer 30.28 in (1025.7 mb)
Dewpoint 55°F (13°C)
Visibility 10.00 mi
Last update 11 Apr 2:56 pm CDT
Extended Forecast for

Waltonville IL

  • This Afternoon

    This Afternoon: Mostly sunny, with a high near 74. Southeast wind around 5 mph.

    High: 74 °F

    Mostly Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 59. Southeast wind 3 to 6 mph.

    Low: 59 °F

    Partly Cloudy

  • Sunday

    Sunday: Increasing clouds, with a high near 81. South southwest wind 7 to 12 mph increasing to 13 to 18 mph in the afternoon. Winds could gust as high as 26 mph.

    High: 81 °F

    Increasing
    Clouds

  • Sunday Night

    Sunday Night: A slight chance of showers, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 66. South wind 14 to 16 mph, with gusts as high as 28 mph. Chance of precipitation is 60%.

    Low: 66 °F

    Slight Chance
    Showers then
    Showers
    Likely

  • Monday

    Monday: A chance of showers and thunderstorms before 7am, then a chance of showers between 7am and 1pm. Mostly sunny, with a high near 82. South southwest wind 15 to 18 mph, with gusts as high as 26 mph. Chance of precipitation is 30%.

    High: 82 °F

    Chance
    Showers

  • Monday Night

    Monday Night: Partly cloudy, with a low around 68. South southwest wind 13 to 15 mph, with gusts as high as 24 mph.

    Low: 68 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 85. South southwest wind 11 to 18 mph, with gusts as high as 25 mph.

    High: 85 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: A chance of showers and thunderstorms, mainly after 1am. Mostly cloudy, with a low around 69. South southwest wind around 14 mph, with gusts as high as 22 mph.

    Low: 69 °F

    Chance
    T-storms

  • Wednesday

    Wednesday: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm. Partly sunny, with a high near 82. South southwest wind 11 to 15 mph, with gusts as high as 23 mph.

    High: 82 °F

    Showers
    Likely

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 74. Southeast wind around 5 mph.
Tonight
Partly cloudy, with a low around 59. Southeast wind 3 to 6 mph.
Sunday
Increasing clouds, with a high near 81. South southwest wind 7 to 12 mph increasing to 13 to 18 mph in the afternoon. Winds could gust as high as 26 mph.
Sunday Night
A slight chance of showers, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 66. South wind 14 to 16 mph, with gusts as high as 28 mph. Chance of precipitation is 60%.
Monday
A chance of showers and thunderstorms before 7am, then a chance of showers between 7am and 1pm. Mostly sunny, with a high near 82. South southwest wind 15 to 18 mph, with gusts as high as 26 mph. Chance of precipitation is 30%.
Monday Night
Partly cloudy, with a low around 68. South southwest wind 13 to 15 mph, with gusts as high as 24 mph.
Tuesday
Mostly sunny, with a high near 85. South southwest wind 11 to 18 mph, with gusts as high as 25 mph.
Tuesday Night
A chance of showers and thunderstorms, mainly after 1am. Mostly cloudy, with a low around 69. South southwest wind around 14 mph, with gusts as high as 22 mph.
Wednesday
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm. Partly sunny, with a high near 82. South southwest wind 11 to 15 mph, with gusts as high as 23 mph.
Wednesday Night
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 64. South southwest wind 7 to 9 mph.
Thursday
Showers likely and possibly a thunderstorm. Partly sunny, with a high near 80. Southwest wind 7 to 10 mph.
Thursday Night
A slight chance of showers. Mostly clear, with a low around 61. South wind around 5 mph.
Friday
A chance of showers and thunderstorms. Partly sunny, with a high near 85. South southwest wind 6 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:
2:06 pm CDT Apr 11, 2026
Forecast Valid:
3pm CDT Apr 11, 2026-6pm CDT Apr 17, 2026
 
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Additional Resources

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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