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.

82°F

28°C

Humidity 34%
Wind Speed SW 15 mph
Barometer 29.85 in (1011.1 mb)
Dewpoint 51°F (11°C)
Visibility 10.00 mi
Heat Index81°F (27°C)
Last update 20 Mar 3:56 pm CDT
Extended Forecast for

Waltonville IL

  • This Afternoon

    This Afternoon: Sunny, with a high near 84. West southwest wind around 10 mph.

    High: 84 °F

    Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 53. West southwest wind around 6 mph becoming calm in the evening.

    Low: 53 °F

    Partly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 80. East northeast wind around 5 mph becoming light and variable.

    High: 80 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 62. Calm wind becoming south southwest 5 to 8 mph in the evening.

    Low: 62 °F

    Mostly Clear

  • Sunday

    Sunday: Mostly sunny, with a high near 84. South southwest wind 9 to 14 mph, with gusts as high as 21 mph.

    High: 84 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: A 20 percent chance of showers before 1am. Partly cloudy, with a low around 40. North wind 13 to 15 mph, with gusts as high as 24 mph.

    Low: 40 °F

    Slight Chance
    Showers

  • Monday

    Monday: Sunny, with a high near 57. North northeast wind 8 to 11 mph, with gusts as high as 18 mph.

    High: 57 °F

    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 39. East wind around 5 mph.

    Low: 39 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 59. South wind around 6 mph.

    High: 59 °F

    Partly Sunny

Detailed Forecast

This Afternoon
Sunny, with a high near 84. West southwest wind around 10 mph.
Tonight
Partly cloudy, with a low around 53. West southwest wind around 6 mph becoming calm in the evening.
Saturday
Sunny, with a high near 80. East northeast wind around 5 mph becoming light and variable.
Saturday Night
Mostly clear, with a low around 62. Calm wind becoming south southwest 5 to 8 mph in the evening.
Sunday
Mostly sunny, with a high near 84. South southwest wind 9 to 14 mph, with gusts as high as 21 mph.
Sunday Night
A 20 percent chance of showers before 1am. Partly cloudy, with a low around 40. North wind 13 to 15 mph, with gusts as high as 24 mph.
Monday
Sunny, with a high near 57. North northeast wind 8 to 11 mph, with gusts as high as 18 mph.
Monday Night
Partly cloudy, with a low around 39. East wind around 5 mph.
Tuesday
Partly sunny, with a high near 59. South wind around 6 mph.
Tuesday Night
A slight chance of showers after 1am. Mostly cloudy, with a low around 42. Light and variable wind becoming south southeast around 5 mph after midnight.
Wednesday
A slight chance of showers. Mostly cloudy, with a high near 66. East northeast wind 6 to 9 mph becoming south southeast in the afternoon.
Wednesday Night
Partly cloudy, with a low around 50. South southeast wind 6 to 9 mph.
Thursday
A slight chance of showers and thunderstorms. Sunny, with a high near 78. South wind 10 to 16 mph, with gusts as high as 23 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:
1:26 pm CDT Mar 20, 2026
Forecast Valid:
4pm CDT Mar 20, 2026-6pm CDT Mar 26, 2026
 
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Additional Resources

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Chance of Precipitation