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

59°F

15°C

Humidity 96%
Wind Speed Calm
Barometer 30.12 in (1020.0 mb)
Dewpoint 58°F (14°C)
Visibility 10.00 mi
Last update 28 Aug 10:56 pm CDT
Extended Forecast for

5 Miles SW Mount Vernon IL

  • Tonight

    Tonight: Mostly clear, with a low around 55. Calm wind.

    Low: 55 °F

    Mostly Clear

  • Friday

    Friday: Increasing clouds, with a high near 87. Calm wind becoming north 5 to 7 mph in the afternoon.

    High: 87 °F

    Increasing
    Clouds

  • Friday Night

    Friday Night: Mostly clear, with a low around 55. East northeast wind 3 to 6 mph.

    Low: 55 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 84. Northeast wind 5 to 9 mph.

    High: 84 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 56. East northeast wind 3 to 7 mph.

    Low: 56 °F

    Mostly Clear

  • Sunday

    Sunday: Mostly sunny, with a high near 84. Northeast wind 5 to 9 mph.

    High: 84 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 55. Northeast wind 3 to 7 mph.

    Low: 55 °F

    Partly Cloudy

  • Labor Day

    Labor Day: Mostly sunny, with a high near 85. Northeast wind 3 to 7 mph.

    High: 85 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 57. Northeast wind around 6 mph becoming calm in the evening.

    Low: 57 °F

    Partly Cloudy

Detailed Forecast

Tonight
Mostly clear, with a low around 55. Calm wind.
Friday
Increasing clouds, with a high near 87. Calm wind becoming north 5 to 7 mph in the afternoon.
Friday Night
Mostly clear, with a low around 55. East northeast wind 3 to 6 mph.
Saturday
Sunny, with a high near 84. Northeast wind 5 to 9 mph.
Saturday Night
Mostly clear, with a low around 56. East northeast wind 3 to 7 mph.
Sunday
Mostly sunny, with a high near 84. Northeast wind 5 to 9 mph.
Sunday Night
Partly cloudy, with a low around 55. Northeast wind 3 to 7 mph.
Labor Day
Mostly sunny, with a high near 85. Northeast wind 3 to 7 mph.
Monday Night
Partly cloudy, with a low around 57. Northeast wind around 6 mph becoming calm in the evening.
Tuesday
Mostly sunny, with a high near 79. Calm wind becoming north northeast around 6 mph in the afternoon.
Tuesday Night
Partly cloudy, with a low around 58. Light north wind.
Wednesday
A slight chance of showers. Mostly sunny, with a high near 83. Calm wind becoming west 5 to 9 mph in the morning.
Wednesday Night
A chance of showers. Partly cloudy, with a low around 55. Northwest wind 5 to 7 mph.
Thursday
A slight chance of showers. Partly sunny, with a high near 73. West northwest wind 6 to 11 mph.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
5 Miles SW Mount Vernon IL
 38.27°N 88.97°W
Last Update:
9:17 pm CDT Aug 28, 2025
Forecast Valid:
11pm CDT Aug 28, 2025-6pm CDT Sep 4, 2025
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation