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 Vrbl 7 mph
Barometer 30.24 in
Dewpoint N/A
Visibility 10.00 mi
Last update 7 Dec 11:56 pm CST
Extended Forecast for

Mount Vernon IL

  • Overnight

    Overnight: A chance of flurries before 1am. Cloudy, with a low around 24. North wind 6 to 10 mph.

    Low: 24 °F

    Chance
    Flurries

  • Monday

    Monday: Mostly cloudy, then gradually becoming sunny, with a high near 36. North wind 3 to 7 mph.

    High: 36 °F

    Decreasing
    Clouds

  • Monday Night

    Monday Night: Partly cloudy, 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

    Partly Cloudy

  • 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 20 percent 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

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 19. North northwest wind 6 to 9 mph.

    Low: 19 °F

    Mostly Cloudy

Detailed Forecast

Overnight
A chance of flurries before 1am. Cloudy, with a low around 24. North wind 6 to 10 mph.
Monday
Mostly cloudy, then gradually becoming sunny, with a high near 36. North wind 3 to 7 mph.
Monday Night
Partly cloudy, 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 20 percent 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 10 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.
Saturday Night
Mostly cloudy, with a low around 8. Northwest wind 3 to 6 mph.
Sunday
Mostly sunny, with a high near 26. West northwest wind 6 to 8 mph becoming south in the afternoon.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Mount Vernon IL
 38.33°N 88.91°W
Last Update:
11:16 pm CST Dec 7, 2025
Forecast Valid:
12am CST Dec 8, 2025-6pm CST Dec 14, 2025
 
Forecast Discussion
 
Get as KML Get as XML

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