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

N/A

Humidity NA
Wind Speed SW 6 mph
Barometer 30.18 in
Dewpoint N/A
Visibility 10.00 mi
Last update 3 Dec 6:56 pm CST
Extended Forecast for

Mount Vernon IL

  • Tonight

    Tonight: A 30 percent chance of snow showers, mainly before 4am. Cloudy, with a low around 20. Calm wind becoming north 5 to 9 mph after midnight.

    Low: 20 °F

    Chance Snow
    Showers

  • Thursday

    Thursday: Mostly cloudy, then gradually becoming sunny, with a high near 28. North northeast wind 5 to 9 mph.

    High: 28 °F

    Decreasing
    Clouds

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 17. Calm wind.

    Low: 17 °F

    Mostly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 39. Calm wind becoming south southwest around 5 mph.

    High: 39 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 25. Calm wind.

    Low: 25 °F

    Partly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 43. Calm wind becoming west southwest around 5 mph.

    High: 43 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: A slight chance of freezing rain after midnight. Mostly cloudy, with a low around 27. Calm wind becoming northeast around 5 mph after midnight. Chance of precipitation is 20%.

    Low: 27 °F

    Mostly Cloudy
    then Slight
    Chance
    Freezing Rain

  • Sunday

    Sunday: A slight chance of showers before noon. Partly sunny, with a high near 38. North northeast wind 6 to 8 mph.

    High: 38 °F

    Slight Chance
    Showers then
    Partly Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 19. North wind around 6 mph becoming calm in the evening.

    Low: 19 °F

    Mostly Cloudy

Detailed Forecast

Tonight
A 30 percent chance of snow showers, mainly before 4am. Cloudy, with a low around 20. Calm wind becoming north 5 to 9 mph after midnight.
Thursday
Mostly cloudy, then gradually becoming sunny, with a high near 28. North northeast wind 5 to 9 mph.
Thursday Night
Mostly cloudy, with a low around 17. Calm wind.
Friday
Mostly sunny, with a high near 39. Calm wind becoming south southwest around 5 mph.
Friday Night
Partly cloudy, with a low around 25. Calm wind.
Saturday
Partly sunny, with a high near 43. Calm wind becoming west southwest around 5 mph.
Saturday Night
A slight chance of freezing rain after midnight. Mostly cloudy, with a low around 27. Calm wind becoming northeast around 5 mph after midnight. Chance of precipitation is 20%.
Sunday
A slight chance of showers before noon. Partly sunny, with a high near 38. North northeast wind 6 to 8 mph.
Sunday Night
Mostly cloudy, with a low around 19. North wind around 6 mph becoming calm in the evening.
Monday
Mostly sunny, with a high near 34. Calm wind becoming north around 5 mph.
Monday Night
Partly cloudy, with a low around 23. Calm wind becoming south southwest 5 to 7 mph after midnight.
Tuesday
Mostly sunny, with a high near 45. Southwest wind 7 to 11 mph.
Tuesday Night
Mostly cloudy, with a low around 33. South southwest wind 7 to 10 mph, with gusts as high as 18 mph.
Wednesday
A slight chance of showers. Partly sunny, with a high near 50. Southwest wind 10 to 13 mph, with gusts as high as 20 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:
4:41 pm CST Dec 3, 2025
Forecast Valid:
7pm CST Dec 3, 2025-6pm CST Dec 10, 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