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.

Mostly Cloudy

38°F

3°C

Humidity 46%
Wind Speed NW 13 G 24 mph
Barometer 29.89 in (1012.8 mb)
Dewpoint 19°F (-7°C)
Visibility 10.00 mi
Wind Chill30°F (-1°C)
Last update 14 Jan 12:56 pm CST
Extended Forecast for

Mount Vernon IL

  • This Afternoon

    This Afternoon: Mostly cloudy early, then becoming sunny, with a high near 42. Breezy, with a north northwest wind 17 to 21 mph, with gusts as high as 29 mph.

    High: 42 °F

    Sunny and
    Breezy

  • Tonight

    Tonight: Mostly clear, with a low around 18. Northwest wind 7 to 16 mph, with gusts as high as 25 mph.

    Low: 18 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 32. Northwest wind 5 to 7 mph becoming light and variable in the afternoon.

    High: 32 °F

    Sunny

  • Thursday Night

    Thursday Night: A 40 percent chance of snow showers, mainly after midnight. Increasing clouds, with a low around 25. Light south southwest wind increasing to 6 to 11 mph in the evening. Winds could gust as high as 22 mph.

    Low: 25 °F

    Chance Snow
    Showers

  • Friday

    Friday: Partly sunny, with a high near 44. West wind 9 to 15 mph, with gusts as high as 21 mph.

    High: 44 °F

    Partly Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 22. West wind 8 to 10 mph, with gusts as high as 20 mph.

    Low: 22 °F

    Mostly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 26. West northwest wind 9 to 14 mph, with gusts as high as 22 mph.

    High: 26 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 9. Northwest wind 6 to 8 mph.

    Low: 9 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 23. West wind 6 to 10 mph.

    High: 23 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
Mostly cloudy early, then becoming sunny, with a high near 42. Breezy, with a north northwest wind 17 to 21 mph, with gusts as high as 29 mph.
Tonight
Mostly clear, with a low around 18. Northwest wind 7 to 16 mph, with gusts as high as 25 mph.
Thursday
Sunny, with a high near 32. Northwest wind 5 to 7 mph becoming light and variable in the afternoon.
Thursday Night
A 40 percent chance of snow showers, mainly after midnight. Increasing clouds, with a low around 25. Light south southwest wind increasing to 6 to 11 mph in the evening. Winds could gust as high as 22 mph.
Friday
Partly sunny, with a high near 44. West wind 9 to 15 mph, with gusts as high as 21 mph.
Friday Night
Mostly cloudy, with a low around 22. West wind 8 to 10 mph, with gusts as high as 20 mph.
Saturday
Partly sunny, with a high near 26. West northwest wind 9 to 14 mph, with gusts as high as 22 mph.
Saturday Night
Partly cloudy, with a low around 9. Northwest wind 6 to 8 mph.
Sunday
Mostly sunny, with a high near 23. West wind 6 to 10 mph.
Sunday Night
Partly cloudy, with a low around 14. Southwest wind 6 to 10 mph, with gusts as high as 20 mph.
M.L.King Day
Mostly sunny, with a high near 27. West northwest wind 9 to 14 mph, with gusts as high as 21 mph.
Monday Night
Mostly clear, with a low around 9. Northwest wind 3 to 7 mph.
Tuesday
Sunny, with a high near 31. Light west wind becoming west southwest 5 to 9 mph in the morning.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Mount Vernon IL
 38.31°N 88.91°W
Last Update:
11:42 am CST Jan 14, 2026
Forecast Valid:
1pm CST Jan 14, 2026-6pm CST Jan 20, 2026
 
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