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.

N/A

Humidity NA
Wind Speed NA
Barometer NA
Dewpoint N/A
Visibility NA
Last update *** Not a current observation ***
Extended Forecast for

Mount Vernon IL

  • Today

    Today: Partly sunny, with a high near 51. East southeast wind 5 to 7 mph.

    High: 51 °F

    Partly Sunny

  • Tonight

    Tonight: Mostly cloudy, with a low around 30. East southeast wind 3 to 5 mph.

    Low: 30 °F

    Mostly Cloudy

  • Friday

    Friday: Sunny, with a high near 56. Calm wind becoming south 5 to 7 mph.

    High: 56 °F

    Sunny

  • Friday Night

    Friday Night: Increasing clouds, with a low around 36. Calm wind.

    Low: 36 °F

    Increasing
    Clouds

  • Saturday

    Saturday: Rain likely, mainly after noon. Cloudy, with a high near 53. Calm wind becoming southeast around 6 mph in the afternoon. Chance of precipitation is 60%.

    High: 53 °F

    Slight Chance
    Rain then
    Rain Likely

  • Saturday Night

    Saturday Night: Rain. Low around 44. East wind around 7 mph. Chance of precipitation is 80%.

    Low: 44 °F

    Rain

  • Sunday

    Sunday: A 40 percent chance of rain, mainly before noon. Partly sunny, with a high near 56. North northeast wind 6 to 10 mph.

    High: 56 °F

    Chance Rain

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 35. North wind around 5 mph becoming calm in the evening.

    Low: 35 °F

    Mostly Clear

  • Washington's Birthday

    Washington's Birthday: Mostly sunny, with a high near 59. Calm wind becoming south 5 to 7 mph in the morning.

    High: 59 °F

    Mostly Sunny

Detailed Forecast

Today
Partly sunny, with a high near 51. East southeast wind 5 to 7 mph.
Tonight
Mostly cloudy, with a low around 30. East southeast wind 3 to 5 mph.
Friday
Sunny, with a high near 56. Calm wind becoming south 5 to 7 mph.
Friday Night
Increasing clouds, with a low around 36. Calm wind.
Saturday
Rain likely, mainly after noon. Cloudy, with a high near 53. Calm wind becoming southeast around 6 mph in the afternoon. Chance of precipitation is 60%.
Saturday Night
Rain. Low around 44. East wind around 7 mph. Chance of precipitation is 80%.
Sunday
A 40 percent chance of rain, mainly before noon. Partly sunny, with a high near 56. North northeast wind 6 to 10 mph.
Sunday Night
Mostly clear, with a low around 35. North wind around 5 mph becoming calm in the evening.
Washington's Birthday
Mostly sunny, with a high near 59. Calm wind becoming south 5 to 7 mph in the morning.
Monday Night
Mostly cloudy, with a low around 43. South wind around 6 mph.
Tuesday
Mostly cloudy, with a high near 64. South wind 6 to 14 mph, with gusts as high as 22 mph.
Tuesday Night
Mostly cloudy, with a low around 54. South southwest wind 13 to 15 mph, with gusts as high as 25 mph.
Wednesday
A slight chance of rain. Mostly cloudy, with a high near 65. West southwest wind 10 to 15 mph, with gusts as high as 24 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:
10:41 am CST Feb 12, 2026
Forecast Valid:
11am CST Feb 12, 2026-6pm CST Feb 18, 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