National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

Mount Vernon Airport (KMVN)

Lat: 38.33°NLon: 88.85°WElev: 466ft.

Fair

47°F

8°C

Humidity 59%
Wind Speed NW 9 mph
Barometer 30.43 in (1031.0 mb)
Dewpoint 33°F (1°C)
Visibility 10.00 mi
Wind Chill43°F (6°C)
Last update 27 Mar 3:56 pm CDT
Extended Forecast for

Mount Vernon IL

Freeze Warning March 28, 01:00am until March 28, 09:00am
Click here for hazard details and duration
Freeze Warning

  • This Afternoon

    This Afternoon: Partly sunny, with a steady temperature around 48. North wind around 9 mph, with gusts as high as 23 mph.

    High: 48 °F

    Partly Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 30. North wind 6 to 13 mph, with gusts as high as 21 mph.

    Low: 30 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 54. Light and variable wind becoming east around 6 mph in the afternoon.

    High: 54 °F

    Sunny

  • Saturday Night

    Saturday Night: Increasing clouds, with a low around 38. South southeast wind 3 to 6 mph.

    Low: 38 °F

    Increasing
    Clouds

  • Sunday

    Sunday: Partly sunny, with a high near 67. South wind 6 to 14 mph, with gusts as high as 22 mph.

    High: 67 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 55. South southwest wind 8 to 10 mph, with gusts as high as 18 mph.

    Low: 55 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 77. South southwest wind 10 to 16 mph, with gusts as high as 25 mph.

    High: 77 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 64. South wind around 15 mph, with gusts as high as 26 mph.

    Low: 64 °F

    Partly Cloudy

  • Tuesday

    Tuesday: A slight chance of showers after 1pm. Mostly sunny, with a high near 80. Breezy, with a south southwest wind 15 to 20 mph, with gusts as high as 29 mph.

    High: 80 °F

    Breezy.
    Mostly Sunny
    then Slight
    Chance
    Showers

Detailed Forecast

This Afternoon
Partly sunny, with a steady temperature around 48. North wind around 9 mph, with gusts as high as 23 mph.
Tonight
Mostly clear, with a low around 30. North wind 6 to 13 mph, with gusts as high as 21 mph.
Saturday
Sunny, with a high near 54. Light and variable wind becoming east around 6 mph in the afternoon.
Saturday Night
Increasing clouds, with a low around 38. South southeast wind 3 to 6 mph.
Sunday
Partly sunny, with a high near 67. South wind 6 to 14 mph, with gusts as high as 22 mph.
Sunday Night
Partly cloudy, with a low around 55. South southwest wind 8 to 10 mph, with gusts as high as 18 mph.
Monday
Mostly sunny, with a high near 77. South southwest wind 10 to 16 mph, with gusts as high as 25 mph.
Monday Night
Partly cloudy, with a low around 64. South wind around 15 mph, with gusts as high as 26 mph.
Tuesday
A slight chance of showers after 1pm. Mostly sunny, with a high near 80. Breezy, with a south southwest wind 15 to 20 mph, with gusts as high as 29 mph.
Tuesday Night
Showers likely, mainly after 1am. Mostly cloudy, with a low around 52. South southwest wind 13 to 15 mph becoming west after midnight. Winds could gust as high as 24 mph.
Wednesday
Showers and thunderstorms likely. Mostly cloudy, with a high near 62. Northwest wind 11 to 14 mph becoming north northeast in the afternoon. Winds could gust as high as 22 mph.
Wednesday Night
Showers and thunderstorms likely. Mostly cloudy, with a low around 44. East northeast wind around 11 mph, with gusts as high as 21 mph.
Thursday
Showers and thunderstorms likely. Mostly cloudy, with a high near 57. East wind 11 to 13 mph, with gusts as high as 21 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:
3:57 pm CDT Mar 27, 2026
Forecast Valid:
4pm CDT Mar 27, 2026-6pm CDT Apr 2, 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