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

60°F

16°C

Humidity 84%
Wind Speed Calm
Barometer 29.97 in (1014.9 mb)
Dewpoint 55°F (13°C)
Visibility 10.00 mi
Last update 7 Oct 10:56 pm CDT
Extended Forecast for

Waltonville IL

  • Tonight

    Tonight: Clear, with a low around 56. Calm wind.

    Low: 56 °F

    Clear

  • Thursday

    Thursday: Sunny, with a high near 85. Calm wind becoming east around 5 mph.

    High: 85 °F

    Sunny

  • Thursday Night

    Thursday Night: Clear, with a low around 56. Calm wind.

    Low: 56 °F

    Clear

  • Friday

    Friday: Sunny, with a high near 89. Calm wind becoming south southeast 5 to 8 mph in the morning.

    High: 89 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 59. South southeast wind around 5 mph becoming calm in the evening.

    Low: 59 °F

    Mostly Clear

  • Saturday

    Saturday: A 30 percent chance of showers after 1pm. Mostly sunny, with a high near 85. Light south southeast wind becoming east southeast 8 to 13 mph in the morning.

    High: 85 °F

    Mostly Sunny
    then Chance
    Showers

  • Saturday Night

    Saturday Night: Showers and possibly a thunderstorm before 1am, then showers likely. Low around 57. East wind 8 to 10 mph. Chance of precipitation is 80%.

    Low: 57 °F

    Showers

  • Sunday

    Sunday: A slight chance of showers before 1pm. Partly sunny, with a high near 77. East northeast wind around 11 mph becoming northwest in the afternoon.

    High: 77 °F

    Slight Chance
    Showers

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 56. Light and variable wind.

    Low: 56 °F

    Partly Cloudy

Detailed Forecast

Tonight
Clear, with a low around 56. Calm wind.
Thursday
Sunny, with a high near 85. Calm wind becoming east around 5 mph.
Thursday Night
Clear, with a low around 56. Calm wind.
Friday
Sunny, with a high near 89. Calm wind becoming south southeast 5 to 8 mph in the morning.
Friday Night
Mostly clear, with a low around 59. South southeast wind around 5 mph becoming calm in the evening.
Saturday
A 30 percent chance of showers after 1pm. Mostly sunny, with a high near 85. Light south southeast wind becoming east southeast 8 to 13 mph in the morning.
Saturday Night
Showers and possibly a thunderstorm before 1am, then showers likely. Low around 57. East wind 8 to 10 mph. Chance of precipitation is 80%.
Sunday
A slight chance of showers before 1pm. Partly sunny, with a high near 77. East northeast wind around 11 mph becoming northwest in the afternoon.
Sunday Night
Partly cloudy, with a low around 56. Light and variable wind.
Columbus Day
Mostly sunny, with a high near 86. Light southwest wind increasing to 8 to 13 mph in the afternoon.
Monday Night
Mostly clear, with a low around 56. South southwest wind 7 to 10 mph.
Tuesday
Sunny, with a high near 76. West wind 9 to 15 mph becoming north northwest in the afternoon. Winds could gust as high as 18 mph.
Tuesday Night
Mostly clear, with a low around 49. North northeast wind 5 to 10 mph.
Wednesday
A slight chance of showers. Sunny, with a high near 73. East wind 6 to 9 mph.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Waltonville IL
 38.23°N 89.03°W
Last Update:
10:31 pm CDT Oct 7, 2026
Forecast Valid:
11pm CDT Oct 7, 2026-6pm CDT Oct 14, 2026
 
Forecast Discussion
 
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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