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.

38°F

3°C

Humidity 60%
Wind Speed N 16 G 24 mph
Barometer 30.36 in (1028.8 mb)
Dewpoint 25°F (-4°C)
Visibility 10.00 mi
Wind Chill29°F (-2°C)
Last update 23 Mar 8:56 am CDT
Extended Forecast for

Mount Vernon IL

  • Today

    Today: Increasing clouds, with a high near 54. North northeast wind 8 to 14 mph, with gusts as high as 22 mph.

    High: 54 °F

    Increasing
    Clouds

  • Tonight

    Tonight: Mostly cloudy, with a low around 36. East northeast wind 6 to 8 mph.

    Low: 36 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 60. Southeast wind 5 to 8 mph.

    High: 60 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 41. East southeast wind around 5 mph becoming calm in the evening.

    Low: 41 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 71. Calm wind becoming south 5 to 9 mph in the morning.

    High: 71 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 58. South wind 6 to 10 mph, with gusts as high as 18 mph.

    Low: 58 °F

    Partly Cloudy

  • Thursday

    Thursday: Sunny, with a high near 84. South southwest wind 9 to 14 mph, with gusts as high as 22 mph.

    High: 84 °F

    Sunny

  • Thursday Night

    Thursday Night: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 44. South southwest wind 13 to 15 mph becoming north after midnight. Winds could gust as high as 24 mph.

    Low: 44 °F

    Showers
    Likely

  • Friday

    Friday: A chance of showers, mainly before 1pm. Mostly cloudy, with a high near 52. North wind around 15 mph, with gusts as high as 24 mph.

    High: 52 °F

    Chance
    Showers

Detailed Forecast

Today
Increasing clouds, with a high near 54. North northeast wind 8 to 14 mph, with gusts as high as 22 mph.
Tonight
Mostly cloudy, with a low around 36. East northeast wind 6 to 8 mph.
Tuesday
Partly sunny, with a high near 60. Southeast wind 5 to 8 mph.
Tuesday Night
Partly cloudy, with a low around 41. East southeast wind around 5 mph becoming calm in the evening.
Wednesday
Mostly sunny, with a high near 71. Calm wind becoming south 5 to 9 mph in the morning.
Wednesday Night
Partly cloudy, with a low around 58. South wind 6 to 10 mph, with gusts as high as 18 mph.
Thursday
Sunny, with a high near 84. South southwest wind 9 to 14 mph, with gusts as high as 22 mph.
Thursday Night
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 44. South southwest wind 13 to 15 mph becoming north after midnight. Winds could gust as high as 24 mph.
Friday
A chance of showers, mainly before 1pm. Mostly cloudy, with a high near 52. North wind around 15 mph, with gusts as high as 24 mph.
Friday Night
Mostly clear, with a low around 31. North wind 6 to 10 mph, with gusts as high as 18 mph.
Saturday
Sunny, with a high near 56. North wind 5 to 8 mph.
Saturday Night
Mostly clear, with a low around 36. Light and variable wind.
Sunday
Mostly sunny, with a high near 62. South wind 5 to 8 mph.
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:
6:46 am CDT Mar 23, 2026
Forecast Valid:
9am CDT Mar 23, 2026-6pm CDT Mar 29, 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