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.

A Few Clouds

66°F

19°C

Humidity 68%
Wind Speed S 10 mph
Barometer 29.87 in (1011.6 mb)
Dewpoint 55°F (13°C)
Visibility 10.00 mi
Last update 26 Mar 3:56 am CDT
Extended Forecast for

Mount Vernon IL

  • Today

    Today: Sunny, with a high near 87. Breezy, with a south southwest wind 11 to 21 mph, with gusts as high as 32 mph.

    High: 87 °F

    Sunny then
    Sunny and
    Breezy

  • Tonight

    Tonight: A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 4am. Low around 43. South southwest wind 10 to 16 mph becoming north after midnight. Winds could gust as high as 26 mph. Chance of precipitation is 80%.

    Low: 43 °F

    Partly Cloudy
    then Showers

  • Friday

    Friday: Showers likely and possibly a thunderstorm before 7am, then showers likely between 7am and 1pm. Cloudy, then gradually becoming mostly sunny, with a high near 52. North wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 60%.

    High: 52 °F

    Showers
    Likely

  • Friday Night

    Friday Night: Mostly clear, with a low around 31. North wind 5 to 13 mph, with gusts as high as 21 mph.

    Low: 31 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 55. Light and variable wind becoming northeast around 6 mph in the morning.

    High: 55 °F

    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 40. Southeast wind 3 to 5 mph.

    Low: 40 °F

    Partly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 65. South wind 5 to 11 mph, with gusts as high as 20 mph.

    High: 65 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 54. South wind 8 to 11 mph, with gusts as high as 21 mph.

    Low: 54 °F

    Mostly Cloudy

  • Monday

    Monday: A slight chance of showers and thunderstorms before 1pm. Mostly sunny, with a high near 77. South southwest wind 11 to 15 mph, with gusts as high as 23 mph.

    High: 77 °F

    Slight Chance
    T-storms

Detailed Forecast

Today
Sunny, with a high near 87. Breezy, with a south southwest wind 11 to 21 mph, with gusts as high as 32 mph.
Tonight
A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 4am. Low around 43. South southwest wind 10 to 16 mph becoming north after midnight. Winds could gust as high as 26 mph. Chance of precipitation is 80%.
Friday
Showers likely and possibly a thunderstorm before 7am, then showers likely between 7am and 1pm. Cloudy, then gradually becoming mostly sunny, with a high near 52. North wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 60%.
Friday Night
Mostly clear, with a low around 31. North wind 5 to 13 mph, with gusts as high as 21 mph.
Saturday
Sunny, with a high near 55. Light and variable wind becoming northeast around 6 mph in the morning.
Saturday Night
Partly cloudy, with a low around 40. Southeast wind 3 to 5 mph.
Sunday
Partly sunny, with a high near 65. South wind 5 to 11 mph, with gusts as high as 20 mph.
Sunday Night
Mostly cloudy, with a low around 54. South wind 8 to 11 mph, with gusts as high as 21 mph.
Monday
A slight chance of showers and thunderstorms before 1pm. Mostly sunny, with a high near 77. South southwest wind 11 to 15 mph, with gusts as high as 23 mph.
Monday Night
A slight chance of showers. Partly cloudy, with a low around 62. South southwest wind around 11 mph, with gusts as high as 22 mph.
Tuesday
A chance of showers. Partly sunny, with a high near 81. South southwest wind 11 to 16 mph, with gusts as high as 24 mph.
Tuesday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 63. South southwest wind around 14 mph, with gusts as high as 24 mph.
Wednesday
A chance of showers and thunderstorms. Partly sunny, with a high near 78. South southwest wind 14 to 18 mph, with gusts as high as 26 mph.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Mount Vernon IL
 38.31°N 88.91°W
Last Update:
1:26 am CDT Mar 26, 2026
Forecast Valid:
4am CDT Mar 26, 2026-6pm CDT Apr 1, 2026
 
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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