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.

Light Snow

N/A

Humidity NA
Wind Speed N 8 G 21 mph
Barometer 30.25 in
Dewpoint N/A
Visibility 9.00 mi
Last update 8 Dec 12:56 am CST
Extended Forecast for

Mount Vernon IL

  • Overnight

    Overnight: A 20 percent chance of snow showers before 3am. Mostly cloudy, with a low around 24. North wind 5 to 7 mph.

    Low: 24 °F

    Slight Chance
    Snow Showers

  • Monday

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

    High: 36 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 24. Light and variable wind becoming south southwest 5 to 10 mph after midnight. Winds could gust as high as 20 mph.

    Low: 24 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 49. South southwest wind 10 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 41. South southwest wind 14 to 16 mph, with gusts as high as 26 mph.

    Low: 41 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly cloudy, with a high near 48. West northwest wind 10 to 18 mph, with gusts as high as 26 mph.

    High: 48 °F

    Mostly Cloudy

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 26. Northwest wind 3 to 8 mph.

    Low: 26 °F

    Mostly Cloudy

  • Thursday

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

    High: 37 °F

    Slight Chance
    Snow Showers
    then Mostly
    Cloudy

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 23. East wind 5 to 7 mph becoming west in the evening.

    Low: 23 °F

    Mostly Cloudy

Detailed Forecast

Overnight
A 20 percent chance of snow showers before 3am. Mostly cloudy, with a low around 24. North wind 5 to 7 mph.
Monday
Mostly sunny, with a high near 36. North wind around 6 mph becoming calm in the afternoon.
Monday Night
Partly cloudy, with a low around 24. Light and variable wind becoming south southwest 5 to 10 mph after midnight. Winds could gust as high as 20 mph.
Tuesday
Mostly sunny, with a high near 49. South southwest wind 10 to 14 mph, with gusts as high as 22 mph.
Tuesday Night
Mostly cloudy, with a low around 41. South southwest wind 14 to 16 mph, with gusts as high as 26 mph.
Wednesday
Mostly cloudy, with a high near 48. West northwest wind 10 to 18 mph, with gusts as high as 26 mph.
Wednesday Night
Mostly cloudy, with a low around 26. Northwest wind 3 to 8 mph.
Thursday
A slight chance of snow showers before noon. Mostly cloudy, with a high near 37. Light and variable wind becoming southwest 5 to 7 mph in the morning.
Thursday Night
Mostly cloudy, with a low around 23. East wind 5 to 7 mph becoming west in the evening.
Friday
Partly sunny, with a high near 34. Northwest wind 8 to 13 mph.
Friday Night
Mostly cloudy, with a low around 9. Northwest wind around 10 mph.
Saturday
Partly sunny, with a high near 21. North northwest wind 5 to 9 mph.
Saturday Night
Mostly cloudy, with a low around 9. Calm wind becoming north around 5 mph after midnight.
Sunday
Mostly sunny, with a high near 27. North northwest wind 5 to 8 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:
1:31 am CST Dec 8, 2025
Forecast Valid:
1am CST Dec 8, 2025-6pm CST Dec 14, 2025
 
Forecast Discussion
 
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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