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

84°F

29°C

Humidity 48%
Wind Speed S 18 G 26 mph
Barometer 29.80 in
Dewpoint 62°F (17°C)
Visibility 10.00 mi
Heat Index85°F (29°C)
Last update 26 Mar 1:56 pm CDT
Extended Forecast for

Mount Vernon IL

  • This Afternoon

    This Afternoon: Sunny, with a high near 86. Breezy, with a south southwest wind around 20 mph, with gusts as high as 31 mph.

    High: 86 °F

    Sunny and
    Breezy

  • Tonight

    Tonight: A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 3am. Low around 42. South southwest wind 14 to 17 mph becoming north northeast after midnight. Winds could gust as high as 30 mph. Chance of precipitation is 80%.

    Low: 42 °F

    Slight Chance
    T-storms then
    Showers

  • Friday

    Friday: Showers and thunderstorms likely, mainly before 11am. Cloudy, then gradually becoming mostly sunny, with a high near 53. North wind around 16 mph, with gusts as high as 28 mph. Chance of precipitation is 60%.

    High: 53 °F

    Showers
    Likely then
    Partly Sunny

  • Friday Night

    Friday Night: Patchy frost after 5am. Otherwise, mostly clear, with a low around 31. North wind 6 to 13 mph, with gusts as high as 21 mph.

    Low: 31 °F

    Mostly Clear
    then Patchy
    Frost

  • Saturday

    Saturday: Patchy frost before 8am. Otherwise, sunny, with a high near 55. Light and variable wind becoming east northeast around 6 mph in the morning.

    High: 55 °F

    Patchy Frost
    then Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 39. South southeast wind 3 to 5 mph.

    Low: 39 °F

    Partly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 66. South wind 5 to 11 mph, with gusts as high as 18 mph.

    High: 66 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 56. South wind 7 to 10 mph, with gusts as high as 20 mph.

    Low: 56 °F

    Partly Cloudy

  • Monday

    Monday: A slight chance of showers before 1pm. Mostly sunny, with a high near 79. South southwest wind 10 to 15 mph, with gusts as high as 22 mph.

    High: 79 °F

    Slight Chance
    Showers

Detailed Forecast

This Afternoon
Sunny, with a high near 86. Breezy, with a south southwest wind around 20 mph, with gusts as high as 31 mph.
Tonight
A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 3am. Low around 42. South southwest wind 14 to 17 mph becoming north northeast after midnight. Winds could gust as high as 30 mph. Chance of precipitation is 80%.
Friday
Showers and thunderstorms likely, mainly before 11am. Cloudy, then gradually becoming mostly sunny, with a high near 53. North wind around 16 mph, with gusts as high as 28 mph. Chance of precipitation is 60%.
Friday Night
Patchy frost after 5am. Otherwise, mostly clear, with a low around 31. North wind 6 to 13 mph, with gusts as high as 21 mph.
Saturday
Patchy frost before 8am. Otherwise, sunny, with a high near 55. Light and variable wind becoming east northeast around 6 mph in the morning.
Saturday Night
Partly cloudy, with a low around 39. South southeast wind 3 to 5 mph.
Sunday
Partly sunny, with a high near 66. South wind 5 to 11 mph, with gusts as high as 18 mph.
Sunday Night
Partly cloudy, with a low around 56. South wind 7 to 10 mph, with gusts as high as 20 mph.
Monday
A slight chance of showers before 1pm. Mostly sunny, with a high near 79. South southwest wind 10 to 15 mph, with gusts as high as 22 mph.
Monday Night
A slight chance of showers after 1am. Mostly cloudy, with a low around 63. South wind 10 to 13 mph, with gusts as high as 23 mph.
Tuesday
A slight chance of showers. Partly sunny, with a high near 83. South southwest wind 11 to 17 mph, with gusts as high as 25 mph.
Tuesday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 60. South southwest wind around 14 mph, with gusts as high as 25 mph.
Wednesday
A chance of showers and thunderstorms. Partly sunny, with a high near 77. South southwest wind 14 to 17 mph, with gusts as high as 25 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:
1:27 pm CDT Mar 26, 2026
Forecast Valid:
2pm CDT Mar 26, 2026-6pm CDT Apr 1, 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