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.

Overcast

58°F

14°C

Humidity 84%
Wind Speed W 9 G 17 mph
Barometer 30.05 in (1017.7 mb)
Dewpoint 53°F (12°C)
Visibility 10.00 mi
Last update 16 Oct 2:56 am CDT
Extended Forecast for

4 Miles ENE Mount Vernon IL

  • Overnight

    Overnight: A 20 percent chance of showers. Mostly cloudy, with a low around 48. Northwest wind around 16 mph, with gusts as high as 31 mph.

    Low: 48 °F

    Slight Chance
    Showers

  • Friday

    Friday: Mostly cloudy, with a temperature falling to around 52 by 3pm. Northwest wind 15 to 18 mph, with gusts as high as 28 mph.

    High: 55 °F⇓

    Mostly Cloudy

  • Friday Night

    Friday Night: Partly cloudy, with a low around 39. North wind 11 to 17 mph, with gusts as high as 23 mph.

    Low: 39 °F

    Partly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 61. North northeast wind 6 to 9 mph.

    High: 61 °F

    Sunny

  • Saturday Night

    Saturday Night: Widespread frost, mainly after 5am. Otherwise, clear, with a low around 32. Calm wind.

    Low: 32 °F

    Clear then
    Frost

  • Sunday

    Sunday: Widespread frost, mainly before 8am. Otherwise, sunny, with a high near 66. Calm wind becoming southeast around 5 mph in the morning.

    High: 66 °F

    Frost then
    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 36. Calm wind.

    Low: 36 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 71. Light and variable wind.

    High: 71 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 41. Calm wind.

    Low: 41 °F

    Mostly Clear

Detailed Forecast

Overnight
A 20 percent chance of showers. Mostly cloudy, with a low around 48. Northwest wind around 16 mph, with gusts as high as 31 mph.
Friday
Mostly cloudy, with a temperature falling to around 52 by 3pm. Northwest wind 15 to 18 mph, with gusts as high as 28 mph.
Friday Night
Partly cloudy, with a low around 39. North wind 11 to 17 mph, with gusts as high as 23 mph.
Saturday
Sunny, with a high near 61. North northeast wind 6 to 9 mph.
Saturday Night
Widespread frost, mainly after 5am. Otherwise, clear, with a low around 32. Calm wind.
Sunday
Widespread frost, mainly before 8am. Otherwise, sunny, with a high near 66. Calm wind becoming southeast around 5 mph in the morning.
Sunday Night
Mostly clear, with a low around 36. Calm wind.
Monday
Sunny, with a high near 71. Light and variable wind.
Monday Night
Mostly clear, with a low around 41. Calm wind.
Tuesday
Sunny, with a high near 75. Calm wind.
Tuesday Night
Mostly clear, with a low around 44. Calm wind.
Wednesday
Sunny, with a high near 77. Calm wind.
Wednesday Night
Clear, with a low around 46. Calm wind.
Thursday
Sunny, with a high near 80. Light and variable wind.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles ENE Mount Vernon IL
 38.33°N 88.83°W
Last Update:
2:01 am CDT Oct 16, 2026
Forecast Valid:
3am CDT Oct 16, 2026-6pm CDT Oct 22, 2026
 
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Additional Resources

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Chance of Precipitation