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.

Fog/Mist

39°F

4°C

Humidity 93%
Wind Speed E 7 mph
Barometer 30.20 in (1023.4 mb)
Dewpoint 37°F (3°C)
Visibility 5.00 mi
Wind Chill34°F (1°C)
Last update 2 Mar 4:56 pm CST
Extended Forecast for

Mount Vernon IL

  • Tonight

    Tonight: A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 4am. Low around 38. East northeast wind around 6 mph becoming calm in the evening. Chance of precipitation is 80%.

    Low: 38 °F

    Cloudy then
    Showers

  • Tuesday

    Tuesday: Showers, mainly before 9am. High near 61. Light and variable wind becoming south 5 to 7 mph in the morning. Chance of precipitation is 90%.

    High: 61 °F

    Showers then
    Chance
    Showers

  • Tuesday Night

    Tuesday Night: Showers likely, with thunderstorms also possible after midnight. Cloudy, with a low around 53. East southeast wind 3 to 5 mph. Chance of precipitation is 70%.

    Low: 53 °F

    Showers
    Likely

  • Wednesday

    Wednesday: Showers and possibly a thunderstorm. High near 70. South southwest wind 5 to 9 mph. Chance of precipitation is 80%.

    High: 70 °F

    Showers

  • Wednesday Night

    Wednesday Night: Showers and possibly a thunderstorm. Low around 58. South wind 6 to 8 mph. Chance of precipitation is 80%.

    Low: 58 °F

    Showers

  • Thursday

    Thursday: Showers and possibly a thunderstorm. High near 71. Southwest wind 8 to 11 mph, with gusts as high as 18 mph. Chance of precipitation is 80%.

    High: 71 °F

    Showers

  • Thursday Night

    Thursday Night: A chance of showers, with thunderstorms also possible after midnight. Mostly cloudy, with a low around 57. South wind around 6 mph. Chance of precipitation is 50%.

    Low: 57 °F

    Chance
    Showers

  • Friday

    Friday: A chance of showers and thunderstorms before noon, then a slight chance of showers. Mostly sunny, with a high near 78. South southwest wind 7 to 16 mph, with gusts as high as 24 mph.

    High: 78 °F

    Chance
    T-storms then
    Slight Chance
    Showers

  • Friday Night

    Friday Night: A slight chance of showers, then a chance of showers and thunderstorms after midnight. Partly cloudy, with a low around 61. South wind around 10 mph, with gusts as high as 21 mph.

    Low: 61 °F

    Chance
    Showers

Detailed Forecast

Tonight
A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 4am. Low around 38. East northeast wind around 6 mph becoming calm in the evening. Chance of precipitation is 80%.
Tuesday
Showers, mainly before 9am. High near 61. Light and variable wind becoming south 5 to 7 mph in the morning. Chance of precipitation is 90%.
Tuesday Night
Showers likely, with thunderstorms also possible after midnight. Cloudy, with a low around 53. East southeast wind 3 to 5 mph. Chance of precipitation is 70%.
Wednesday
Showers and possibly a thunderstorm. High near 70. South southwest wind 5 to 9 mph. Chance of precipitation is 80%.
Wednesday Night
Showers and possibly a thunderstorm. Low around 58. South wind 6 to 8 mph. Chance of precipitation is 80%.
Thursday
Showers and possibly a thunderstorm. High near 71. Southwest wind 8 to 11 mph, with gusts as high as 18 mph. Chance of precipitation is 80%.
Thursday Night
A chance of showers, with thunderstorms also possible after midnight. Mostly cloudy, with a low around 57. South wind around 6 mph. Chance of precipitation is 50%.
Friday
A chance of showers and thunderstorms before noon, then a slight chance of showers. Mostly sunny, with a high near 78. South southwest wind 7 to 16 mph, with gusts as high as 24 mph.
Friday Night
A slight chance of showers, then a chance of showers and thunderstorms after midnight. Partly cloudy, with a low around 61. South wind around 10 mph, with gusts as high as 21 mph.
Saturday
Showers and possibly a thunderstorm. Mostly cloudy, with a high near 70. Southwest wind 6 to 11 mph, with gusts as high as 20 mph.
Saturday Night
A chance of showers. Mostly cloudy, with a low around 50. West southwest wind 3 to 5 mph.
Sunday
A chance of showers. Mostly cloudy, with a high near 65. Southwest wind 3 to 8 mph.
Sunday Night
A chance of showers. Mostly cloudy, with a low around 51. Southwest wind around 5 mph.
Monday
A chance of showers. Mostly sunny, with a high near 69. West southwest wind 5 to 10 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:
4:11 pm CST Mar 2, 2026
Forecast Valid:
5pm CST Mar 2, 2026-6pm CDT Mar 9, 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