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

70°F

21°C

Humidity 49%
Wind Speed E 6 mph
Barometer 30.12 in (1020.2 mb)
Dewpoint 50°F (10°C)
Visibility 10.00 mi
Last update 10 Oct 10:56 am CDT
Extended Forecast for

Waltonville IL

  • Today

    Today: Cloudy, with a high near 77. Calm wind becoming east southeast 5 to 9 mph in the afternoon.

    High: 77 °F

    Cloudy

  • Tonight

    Tonight: Mostly cloudy, with a low around 55. East northeast wind 5 to 8 mph becoming light and variable after midnight.

    Low: 55 °F

    Mostly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 85. West northwest wind 3 to 7 mph.

    High: 85 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 59. Light and variable wind.

    Low: 59 °F

    Mostly Clear

  • Columbus Day

    Columbus Day: Sunny, with a high near 91. Light southwest wind increasing to 10 to 15 mph in the morning. Winds could gust as high as 18 mph.

    High: 91 °F

    Sunny

  • Monday Night

    Monday Night: Clear, with a low around 67. South southwest wind 7 to 11 mph.

    Low: 67 °F

    Clear

  • Tuesday

    Tuesday: Sunny, with a high near 91. West southwest wind 7 to 11 mph.

    High: 91 °F

    Sunny

  • Tuesday Night

    Tuesday Night: A slight chance of showers after 1am. Mostly clear, with a low around 63. Southwest wind 5 to 7 mph becoming east after midnight.

    Low: 63 °F

    Clear then
    Slight Chance
    Showers

  • Wednesday

    Wednesday: A chance of showers and thunderstorms. Mostly sunny, with a high near 82. East northeast wind 7 to 10 mph becoming southeast in the afternoon.

    High: 82 °F

    Chance
    Showers

Detailed Forecast

Today
Cloudy, with a high near 77. Calm wind becoming east southeast 5 to 9 mph in the afternoon.
Tonight
Mostly cloudy, with a low around 55. East northeast wind 5 to 8 mph becoming light and variable after midnight.
Sunday
Sunny, with a high near 85. West northwest wind 3 to 7 mph.
Sunday Night
Mostly clear, with a low around 59. Light and variable wind.
Columbus Day
Sunny, with a high near 91. Light southwest wind increasing to 10 to 15 mph in the morning. Winds could gust as high as 18 mph.
Monday Night
Clear, with a low around 67. South southwest wind 7 to 11 mph.
Tuesday
Sunny, with a high near 91. West southwest wind 7 to 11 mph.
Tuesday Night
A slight chance of showers after 1am. Mostly clear, with a low around 63. Southwest wind 5 to 7 mph becoming east after midnight.
Wednesday
A chance of showers and thunderstorms. Mostly sunny, with a high near 82. East northeast wind 7 to 10 mph becoming southeast in the afternoon.
Wednesday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 59. East wind 6 to 9 mph.
Thursday
A chance of showers and thunderstorms. Partly sunny, with a high near 80. East southeast wind 8 to 15 mph becoming southwest in the afternoon.
Thursday Night
A chance of showers. Partly cloudy, with a low around 54. West northwest wind 5 to 9 mph.
Friday
A slight chance of showers. Partly sunny, with a high near 72. Breezy, with a northwest wind 9 to 14 mph increasing to 15 to 20 mph in the afternoon.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Waltonville IL
 38.21°N 89.06°W
Last Update:
11:11 am CDT Oct 10, 2026
Forecast Valid:
11am CDT Oct 10, 2026-6pm CDT Oct 16, 2026
 
Forecast Discussion
 
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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