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

67°F

19°C

Humidity 55%
Wind Speed Calm
Barometer 30.12 in (1020.2 mb)
Dewpoint 50°F (10°C)
Visibility 10.00 mi
Last update 11 Oct 9:56 am CDT
Extended Forecast for

Waltonville IL

  • Today

    Today: Sunny, with a high near 79. Calm wind becoming east around 5 mph in the afternoon.

    High: 79 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 49. Light east northeast wind.

    Low: 49 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 79. Calm wind becoming east southeast around 6 mph in the morning.

    High: 79 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 50. East southeast wind around 5 mph becoming calm in the evening.

    Low: 50 °F

    Mostly Clear

  • Columbus Day

    Columbus Day: Sunny, with a high near 81. Calm wind becoming east around 5 mph in the afternoon.

    High: 81 °F

    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 58. Light east wind.

    Low: 58 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 81. Calm wind becoming northeast around 6 mph in the afternoon.

    High: 81 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 57. North northeast wind around 5 mph becoming calm in the evening.

    Low: 57 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 77. North northeast wind 3 to 7 mph.

    High: 77 °F

    Mostly Sunny

Detailed Forecast

Today
Sunny, with a high near 79. Calm wind becoming east around 5 mph in the afternoon.
Tonight
Mostly clear, with a low around 49. Light east northeast wind.
Sunday
Sunny, with a high near 79. Calm wind becoming east southeast around 6 mph in the morning.
Sunday Night
Mostly clear, with a low around 50. East southeast wind around 5 mph becoming calm in the evening.
Columbus Day
Sunny, with a high near 81. Calm wind becoming east around 5 mph in the afternoon.
Monday Night
Partly cloudy, with a low around 58. Light east wind.
Tuesday
Mostly sunny, with a high near 81. Calm wind becoming northeast around 6 mph in the afternoon.
Tuesday Night
Partly cloudy, with a low around 57. North northeast wind around 5 mph becoming calm in the evening.
Wednesday
Mostly sunny, with a high near 77. North northeast wind 3 to 7 mph.
Wednesday Night
Mostly clear, with a low around 49. North northeast wind around 6 mph becoming calm in the evening.
Thursday
Sunny, with a high near 77. East southeast wind 3 to 8 mph.
Thursday Night
Mostly clear, with a low around 53. South southeast wind around 6 mph.
Friday
Sunny, with a high near 81. South wind 6 to 14 mph, with gusts as high as 18 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:
7:16 am CDT Oct 11, 2025
Forecast Valid:
10am CDT Oct 11, 2025-6pm CDT Oct 17, 2025
 
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