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

50°F

10°C

Humidity 100%
Wind Speed Calm
Barometer 30.22 in (1023.7 mb)
Dewpoint 50°F (10°C)
Visibility 10.00 mi
Last update 14 Oct 5:56 am CDT
Extended Forecast for

Mount Vernon IL

  • Today

    Today: Sunny, with a high near 82. Calm wind becoming east northeast 5 to 7 mph in the afternoon.

    High: 82 °F

    Sunny

  • Tonight

    Tonight: Clear, with a low around 55. Calm wind.

    Low: 55 °F

    Clear

  • Wednesday

    Wednesday: Sunny, with a high near 83. Calm wind becoming northeast around 6 mph in the afternoon.

    High: 83 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 56. Light east wind.

    Low: 56 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 80. Light east wind becoming east southeast 5 to 9 mph in the morning.

    High: 80 °F

    Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 55. East southeast wind around 6 mph.

    Low: 55 °F

    Partly Cloudy

  • Friday

    Friday: Partly sunny, with a high near 84. South wind 5 to 10 mph.

    High: 84 °F

    Partly Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 63. South wind 6 to 8 mph.

    Low: 63 °F

    Mostly Clear

  • Saturday

    Saturday: A chance of showers and thunderstorms, then showers likely after 1pm. Partly sunny, with a high near 78. Southwest wind 9 to 14 mph, with gusts as high as 20 mph.

    High: 78 °F

    Showers
    Likely

Detailed Forecast

Today
Sunny, with a high near 82. Calm wind becoming east northeast 5 to 7 mph in the afternoon.
Tonight
Clear, with a low around 55. Calm wind.
Wednesday
Sunny, with a high near 83. Calm wind becoming northeast around 6 mph in the afternoon.
Wednesday Night
Mostly clear, with a low around 56. Light east wind.
Thursday
Sunny, with a high near 80. Light east wind becoming east southeast 5 to 9 mph in the morning.
Thursday Night
Partly cloudy, with a low around 55. East southeast wind around 6 mph.
Friday
Partly sunny, with a high near 84. South wind 5 to 10 mph.
Friday Night
Mostly clear, with a low around 63. South wind 6 to 8 mph.
Saturday
A chance of showers and thunderstorms, then showers likely after 1pm. Partly sunny, with a high near 78. Southwest wind 9 to 14 mph, with gusts as high as 20 mph.
Saturday Night
Showers likely and possibly a thunderstorm before 1am, then a chance of showers. Mostly cloudy, with a low around 51. West wind 6 to 10 mph.
Sunday
A slight chance of showers. Sunny, with a high near 70. West northwest wind 9 to 16 mph, with gusts as high as 22 mph.
Sunday Night
Clear, with a low around 43. West northwest wind 5 to 9 mph becoming light west after midnight.
Monday
Sunny, with a high near 73. Light west southwest wind becoming southwest 6 to 11 mph in the morning.
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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:
6:17 am CDT Oct 14, 2025
Forecast Valid:
6am CDT Oct 14, 2025-6pm CDT Oct 20, 2025
 
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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