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

57°F

14°C

Humidity 87%
Wind Speed Calm
Barometer 30.17 in (1022.1 mb)
Dewpoint 53°F (12°C)
Visibility 10.00 mi
Last update 4 Oct 7:56 pm CDT
Extended Forecast for

3 Miles E Mount Vernon IL

  • Tonight

    Tonight: Clear, with a low around 51. Calm wind becoming north northeast around 5 mph after midnight.

    Low: 51 °F

    Clear

  • Monday

    Monday: Sunny, with a high near 77. Light north northeast wind becoming northeast 5 to 9 mph in the morning.

    High: 77 °F

    Sunny

  • Monday Night

    Monday Night: Clear, with a low around 43. Light east northeast wind.

    Low: 43 °F

    Clear

  • Tuesday

    Tuesday: Sunny, with a high near 79. Light and variable wind.

    High: 79 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Clear, with a low around 49. Calm wind.

    Low: 49 °F

    Clear

  • Wednesday

    Wednesday: Sunny, with a high near 86. Calm wind becoming west 5 to 7 mph in the afternoon.

    High: 86 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Clear, with a low around 54. Calm wind.

    Low: 54 °F

    Clear

  • Thursday

    Thursday: Sunny, with a high near 85. Calm wind becoming northeast around 6 mph in the afternoon.

    High: 85 °F

    Sunny

  • Thursday Night

    Thursday Night: Clear, with a low around 53. Light east wind.

    Low: 53 °F

    Clear

Detailed Forecast

Tonight
Clear, with a low around 51. Calm wind becoming north northeast around 5 mph after midnight.
Monday
Sunny, with a high near 77. Light north northeast wind becoming northeast 5 to 9 mph in the morning.
Monday Night
Clear, with a low around 43. Light east northeast wind.
Tuesday
Sunny, with a high near 79. Light and variable wind.
Tuesday Night
Clear, with a low around 49. Calm wind.
Wednesday
Sunny, with a high near 86. Calm wind becoming west 5 to 7 mph in the afternoon.
Wednesday Night
Clear, with a low around 54. Calm wind.
Thursday
Sunny, with a high near 85. Calm wind becoming northeast around 6 mph in the afternoon.
Thursday Night
Clear, with a low around 53. Light east wind.
Friday
Sunny, with a high near 84. Calm wind becoming southeast around 6 mph in the morning.
Friday Night
Mostly clear, with a low around 54. Light east wind.
Saturday
Mostly sunny, with a high near 84. Calm wind becoming southeast 5 to 9 mph in the morning.
Saturday Night
A slight chance of showers. Partly cloudy, with a low around 57. East southeast wind 3 to 6 mph.
Sunday
A slight chance of showers. Partly sunny, with a high near 82. East wind 5 to 11 mph.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles E Mount Vernon IL
 38.33°N 88.86°W
Last Update:
8:31 pm CDT Oct 4, 2026
Forecast Valid:
8pm CDT Oct 4, 2026-6pm CDT Oct 11, 2026
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation