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.

Partly Cloudy

68°F

20°C

Humidity 65%
Wind Speed Vrbl 3 mph
Barometer 30.26 in (1024.8 mb)
Dewpoint 56°F (13°C)
Visibility 10.00 mi
Last update 10 Apr 4:56 pm CDT
Extended Forecast for

Mount Vernon IL

  • This Afternoon

    This Afternoon: A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a steady temperature around 72. North northwest wind around 8 mph.

    High: 72 °F

    Chance
    T-storms

  • Tonight

    Tonight: A slight chance of showers and thunderstorms before 3am, then a slight chance of showers after 4am. Mostly cloudy, with a low around 52. East northeast wind around 6 mph. Chance of precipitation is 20%.

    Low: 52 °F

    Slight Chance
    T-storms then
    Slight Chance
    Showers

  • Saturday

    Saturday: A chance of showers, with thunderstorms also possible after 4pm. Partly sunny, with a high near 74. East northeast wind around 7 mph. Chance of precipitation is 30%.

    High: 74 °F

    Chance
    Showers

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 59. East southeast wind around 6 mph.

    Low: 59 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 83. South southwest wind 7 to 17 mph, with gusts as high as 28 mph.

    High: 83 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 67. South southwest wind around 14 mph, with gusts as high as 25 mph. Chance of precipitation is 60%.

    Low: 67 °F

    Mostly Cloudy
    then Showers
    Likely

  • Monday

    Monday: A 50 percent chance of showers and thunderstorms, mainly before 1pm. Partly sunny, with a high near 82. South southwest wind 14 to 16 mph, with gusts as high as 25 mph.

    High: 82 °F

    Chance
    T-storms

  • Monday Night

    Monday Night: A slight chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 67. South southwest wind 10 to 14 mph, with gusts as high as 22 mph.

    Low: 67 °F

    Slight Chance
    T-storms

  • Tuesday

    Tuesday: A slight chance of showers, with thunderstorms also possible after 1pm. Partly sunny, with a high near 85. South southwest wind 10 to 17 mph, with gusts as high as 25 mph.

    High: 85 °F

    Slight Chance
    Showers then
    Slight Chance
    T-storms

Detailed Forecast

This Afternoon
A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a steady temperature around 72. North northwest wind around 8 mph.
Tonight
A slight chance of showers and thunderstorms before 3am, then a slight chance of showers after 4am. Mostly cloudy, with a low around 52. East northeast wind around 6 mph. Chance of precipitation is 20%.
Saturday
A chance of showers, with thunderstorms also possible after 4pm. Partly sunny, with a high near 74. East northeast wind around 7 mph. Chance of precipitation is 30%.
Saturday Night
Partly cloudy, with a low around 59. East southeast wind around 6 mph.
Sunday
Mostly sunny, with a high near 83. South southwest wind 7 to 17 mph, with gusts as high as 28 mph.
Sunday Night
Showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 67. South southwest wind around 14 mph, with gusts as high as 25 mph. Chance of precipitation is 60%.
Monday
A 50 percent chance of showers and thunderstorms, mainly before 1pm. Partly sunny, with a high near 82. South southwest wind 14 to 16 mph, with gusts as high as 25 mph.
Monday Night
A slight chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 67. South southwest wind 10 to 14 mph, with gusts as high as 22 mph.
Tuesday
A slight chance of showers, with thunderstorms also possible after 1pm. Partly sunny, with a high near 85. South southwest wind 10 to 17 mph, with gusts as high as 25 mph.
Tuesday Night
A chance of showers and thunderstorms, mainly after 1am. Mostly cloudy, with a low around 69. South southwest wind 11 to 14 mph, with gusts as high as 22 mph.
Wednesday
A chance of showers and thunderstorms. Mostly cloudy, with a high near 84. Southwest wind 10 to 14 mph, with gusts as high as 21 mph.
Wednesday Night
A chance of showers. Mostly cloudy, with a low around 63. South southwest wind 7 to 9 mph.
Thursday
A chance of showers and thunderstorms. Partly sunny, with a high near 80. South southwest wind 7 to 11 mph, with gusts as high as 18 mph.
Thursday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 62. South wind around 7 mph.
Friday
A chance of showers and thunderstorms. Partly sunny, with a high near 84. South southwest wind 6 to 11 mph, with gusts as high as 18 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:
1:51 pm CDT Apr 10, 2026
Forecast Valid:
5pm CDT Apr 10, 2026-6pm CDT Apr 17, 2026
 
Forecast Discussion
 
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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