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 Calm
Barometer 30.05 in
Dewpoint N/A
Visibility 8.00 mi
Last update 7 Dec 12:56 pm CST
Extended Forecast for

Mount Vernon IL

  • This Afternoon

    This Afternoon: A slight chance of drizzle before 4pm, then a slight chance of showers after 5pm. Cloudy, with a high near 44. North wind 6 to 10 mph. Chance of precipitation is 20%.

    High: 44 °F

    Slight Chance
    Showers

  • Tonight

    Tonight: A slight chance of rain showers, snow showers, and freezing rain before 10pm, then a slight chance of snow showers between 10pm and 11pm. Mostly cloudy, with a low around 24. North northeast wind 6 to 10 mph. Chance of precipitation is 20%.

    Low: 24 °F

    Slight Chance
    Wintry Mix
    then Mostly
    Cloudy

  • Monday

    Monday: Partly sunny, then gradually becoming sunny, with a high near 36. North wind around 6 mph becoming calm in the afternoon.

    High: 36 °F

    Becoming
    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 24. Light and variable wind becoming south southwest 6 to 11 mph after midnight. Winds could gust as high as 20 mph.

    Low: 24 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 49. South southwest wind 11 to 14 mph, with gusts as high as 22 mph.

    High: 49 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 40. Southwest wind 14 to 16 mph, with gusts as high as 26 mph.

    Low: 40 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 49. West southwest wind 9 to 16 mph becoming northwest in the afternoon. Winds could gust as high as 25 mph.

    High: 49 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: A slight chance of snow showers after midnight. Mostly cloudy, with a low around 26. Northwest wind 5 to 7 mph becoming calm.

    Low: 26 °F

    Mostly Cloudy
    then Slight
    Chance Snow
    Showers

  • Thursday

    Thursday: A chance of snow showers before noon, then a slight chance of rain and snow showers. Mostly cloudy, with a high near 37. North wind 5 to 7 mph becoming south southwest in the morning.

    High: 37 °F

    Chance Snow
    Showers then
    Slight Chance
    Rain/Snow

Detailed Forecast

This Afternoon
A slight chance of drizzle before 4pm, then a slight chance of showers after 5pm. Cloudy, with a high near 44. North wind 6 to 10 mph. Chance of precipitation is 20%.
Tonight
A slight chance of rain showers, snow showers, and freezing rain before 10pm, then a slight chance of snow showers between 10pm and 11pm. Mostly cloudy, with a low around 24. North northeast wind 6 to 10 mph. Chance of precipitation is 20%.
Monday
Partly sunny, then gradually becoming sunny, with a high near 36. North wind around 6 mph becoming calm in the afternoon.
Monday Night
Mostly clear, with a low around 24. Light and variable wind becoming south southwest 6 to 11 mph after midnight. Winds could gust as high as 20 mph.
Tuesday
Mostly sunny, with a high near 49. South southwest wind 11 to 14 mph, with gusts as high as 22 mph.
Tuesday Night
Mostly cloudy, with a low around 40. Southwest wind 14 to 16 mph, with gusts as high as 26 mph.
Wednesday
Partly sunny, with a high near 49. West southwest wind 9 to 16 mph becoming northwest in the afternoon. Winds could gust as high as 25 mph.
Wednesday Night
A slight chance of snow showers after midnight. Mostly cloudy, with a low around 26. Northwest wind 5 to 7 mph becoming calm.
Thursday
A chance of snow showers before noon, then a slight chance of rain and snow showers. Mostly cloudy, with a high near 37. North wind 5 to 7 mph becoming south southwest in the morning.
Thursday Night
Mostly cloudy, with a low around 19. North northwest wind 6 to 9 mph.
Friday
Partly sunny, with a high near 28. Northwest wind 9 to 13 mph, with gusts as high as 18 mph.
Friday Night
Mostly cloudy, with a low around 7. Northwest wind around 10 mph.
Saturday
Partly sunny, with a high near 21. Northwest wind 6 to 10 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:
1:06 pm CST Dec 7, 2025
Forecast Valid:
1pm CST Dec 7, 2025-6pm CST Dec 13, 2025
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation