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.

Overcast

36°F

2°C

Humidity 86%
Wind Speed NE 7 mph
Barometer 30.04 in (1018.1 mb)
Dewpoint 32°F (0°C)
Visibility 10.00 mi
Wind Chill30°F (-1°C)
Last update 1 Jan 10:56 am CST
Extended Forecast for

Waltonville IL

  • New Year's Day

    New Year's Day: Partly sunny, with a high near 39. Northeast wind around 6 mph becoming calm in the afternoon.

    High: 39 °F

    Partly Sunny

  • Tonight

    Tonight: Mostly cloudy, with a low around 27. Calm wind.

    Low: 27 °F

    Mostly Cloudy

  • Friday

    Friday: Mostly cloudy, with a high near 42. Calm wind becoming east northeast around 6 mph in the morning.

    High: 42 °F

    Mostly Cloudy

  • Friday Night

    Friday Night: Cloudy, with a low around 29. Northeast wind around 6 mph.

    Low: 29 °F

    Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 41. North northeast wind 3 to 7 mph.

    High: 41 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 24. Calm wind.

    Low: 24 °F

    Mostly Clear

  • Sunday

    Sunday: Mostly sunny, with a high near 43. Light and variable wind.

    High: 43 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 32. Calm wind becoming south 5 to 8 mph in the evening.

    Low: 32 °F

    Partly Cloudy

  • Monday

    Monday: Sunny, with a high near 55. South southwest wind 7 to 11 mph, with gusts as high as 18 mph.

    High: 55 °F

    Sunny

Detailed Forecast

New Year's Day
Partly sunny, with a high near 39. Northeast wind around 6 mph becoming calm in the afternoon.
Tonight
Mostly cloudy, with a low around 27. Calm wind.
Friday
Mostly cloudy, with a high near 42. Calm wind becoming east northeast around 6 mph in the morning.
Friday Night
Cloudy, with a low around 29. Northeast wind around 6 mph.
Saturday
Partly sunny, with a high near 41. North northeast wind 3 to 7 mph.
Saturday Night
Mostly clear, with a low around 24. Calm wind.
Sunday
Mostly sunny, with a high near 43. Light and variable wind.
Sunday Night
Partly cloudy, with a low around 32. Calm wind becoming south 5 to 8 mph in the evening.
Monday
Sunny, with a high near 55. South southwest wind 7 to 11 mph, with gusts as high as 18 mph.
Monday Night
Partly cloudy, with a low around 41. South wind around 6 mph.
Tuesday
Mostly cloudy, with a high near 61. South southwest wind 6 to 10 mph.
Tuesday Night
Mostly cloudy, with a low around 44. Southwest wind around 6 mph.
Wednesday
Partly sunny, with a high near 58. West southwest wind 5 to 7 mph becoming south southeast in the afternoon.
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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:
10:31 am CST Jan 1, 2026
Forecast Valid:
11am CST Jan 1, 2026-6pm CST Jan 7, 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