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

52°F

11°C

Humidity 75%
Wind Speed Calm
Barometer 30.17 in (1022.1 mb)
Dewpoint 44°F (7°C)
Visibility 10.00 mi
Last update 8 Apr 10:56 pm CDT
Extended Forecast for

Mount Vernon IL

  • Tonight

    Tonight: Mostly clear, with a low around 54. South wind 6 to 8 mph.

    Low: 54 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 77. South southwest wind 9 to 14 mph, with gusts as high as 22 mph.

    High: 77 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 56. South wind 6 to 8 mph.

    Low: 56 °F

    Mostly Clear

  • Friday

    Friday: A 40 percent chance of showers and thunderstorms after 1pm. Increasing clouds, with a high near 75. South southwest wind 8 to 10 mph becoming west in the afternoon. Winds could gust as high as 18 mph.

    High: 75 °F

    Mostly Sunny
    then Chance
    T-storms

  • Friday Night

    Friday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 53. North northwest wind around 5 mph becoming light and variable. Chance of precipitation is 40%.

    Low: 53 °F

    Chance
    T-storms then
    Chance
    Showers

  • Saturday

    Saturday: A slight chance of showers, with thunderstorms also possible after 1pm. Partly sunny, with a high near 76. East northeast wind around 6 mph becoming southeast in the afternoon. Chance of precipitation is 20%.

    High: 76 °F

    Slight Chance
    Showers then
    Slight Chance
    T-storms

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 59. South southeast wind 3 to 6 mph.

    Low: 59 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly cloudy, with a high near 80. South wind 7 to 17 mph, with gusts as high as 24 mph.

    High: 80 °F

    Mostly Cloudy

  • Sunday Night

    Sunday Night: A chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 66. South wind 11 to 15 mph, with gusts as high as 26 mph.

    Low: 66 °F

    Mostly Cloudy
    then Chance
    Showers

Detailed Forecast

Tonight
Mostly clear, with a low around 54. South wind 6 to 8 mph.
Thursday
Sunny, with a high near 77. South southwest wind 9 to 14 mph, with gusts as high as 22 mph.
Thursday Night
Mostly clear, with a low around 56. South wind 6 to 8 mph.
Friday
A 40 percent chance of showers and thunderstorms after 1pm. Increasing clouds, with a high near 75. South southwest wind 8 to 10 mph becoming west in the afternoon. Winds could gust as high as 18 mph.
Friday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 53. North northwest wind around 5 mph becoming light and variable. Chance of precipitation is 40%.
Saturday
A slight chance of showers, with thunderstorms also possible after 1pm. Partly sunny, with a high near 76. East northeast wind around 6 mph becoming southeast in the afternoon. Chance of precipitation is 20%.
Saturday Night
Partly cloudy, with a low around 59. South southeast wind 3 to 6 mph.
Sunday
Mostly cloudy, with a high near 80. South wind 7 to 17 mph, with gusts as high as 24 mph.
Sunday Night
A chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 66. South wind 11 to 15 mph, with gusts as high as 26 mph.
Monday
A chance of showers, with thunderstorms also possible after 1pm. Partly sunny, with a high near 80. Breezy, with a south southwest wind 15 to 20 mph, with gusts as high as 28 mph.
Monday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 68. South southwest wind 13 to 15 mph, with gusts as high as 25 mph.
Tuesday
A chance of showers and thunderstorms. Mostly cloudy, with a high near 80. South southwest wind 14 to 18 mph, with gusts as high as 25 mph.
Tuesday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 61. South southwest wind 10 to 13 mph, with gusts as high as 22 mph.
Wednesday
A chance of showers and thunderstorms. Partly sunny, with a high near 72. West southwest wind 10 to 13 mph, with gusts as high as 21 mph.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Mount Vernon IL
 38.31°N 88.91°W
Last Update:
10:26 pm CDT Apr 8, 2026
Forecast Valid:
11pm CDT Apr 8, 2026-6pm CDT Apr 15, 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