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Hazardous Weather Conditions

Current conditions at

Mount Vernon Airport (KMVN)

Lat: 38.33°NLon: 88.85°WElev: 466ft.

Fair

89°F

32°C

Humidity 45%
Wind Speed SW 7 mph
Barometer 29.97 in (1014.8 mb)
Dewpoint 65°F (18°C)
Visibility 10.00 mi
Heat Index91°F (33°C)
Last update 13 Oct 11:56 am CDT
Extended Forecast for

Mount Vernon IL

  • This Afternoon

    This Afternoon: Sunny, with a high near 96. Southwest wind 10 to 14 mph.

    High: 96 °F

    Sunny

  • Tonight

    Tonight: A 20 percent chance of showers and thunderstorms after 4am. Increasing clouds, with a low around 72. South southwest wind 3 to 8 mph.

    Low: 72 °F

    Clear then
    Slight Chance
    T-storms

  • Wednesday

    Wednesday: Showers and thunderstorms before 10am, then showers likely and possibly a thunderstorm between 10am and 2pm, then a chance of showers and thunderstorms after 2pm. High near 81. Calm wind becoming south southeast 5 to 8 mph in the morning. Chance of precipitation is 90%.

    High: 81 °F

    Showers then
    Showers
    Likely

  • Wednesday Night

    Wednesday Night: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 4am. Mostly cloudy, with a low around 66. Calm wind. Chance of precipitation is 60%.

    Low: 66 °F

    Chance
    T-storms then
    Showers
    Likely

  • Thursday

    Thursday: Showers likely and possibly a thunderstorm. Partly sunny, with a high near 86. Light and variable wind becoming southwest 8 to 13 mph in the morning. Chance of precipitation is 70%.

    High: 86 °F

    Showers
    Likely

  • Thursday Night

    Thursday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 51. Southwest wind 8 to 17 mph becoming northwest after midnight. Winds could gust as high as 28 mph. Chance of precipitation is 50%.

    Low: 51 °F

    Chance
    Showers

  • Friday

    Friday: Mostly sunny, with a high near 63. Breezy, with a north northwest wind 20 to 23 mph, with gusts as high as 33 mph.

    High: 63 °F

    Mostly Sunny
    and Breezy

  • Friday Night

    Friday Night: Mostly clear, with a low around 39. North wind 11 to 16 mph decreasing to 5 to 10 mph after midnight. Winds could gust as high as 20 mph.

    Low: 39 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 63. Calm wind becoming northeast around 6 mph.

    High: 63 °F

    Sunny

Detailed Forecast

This Afternoon
Sunny, with a high near 96. Southwest wind 10 to 14 mph.
Tonight
A 20 percent chance of showers and thunderstorms after 4am. Increasing clouds, with a low around 72. South southwest wind 3 to 8 mph.
Wednesday
Showers and thunderstorms before 10am, then showers likely and possibly a thunderstorm between 10am and 2pm, then a chance of showers and thunderstorms after 2pm. High near 81. Calm wind becoming south southeast 5 to 8 mph in the morning. Chance of precipitation is 90%.
Wednesday Night
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 4am. Mostly cloudy, with a low around 66. Calm wind. Chance of precipitation is 60%.
Thursday
Showers likely and possibly a thunderstorm. Partly sunny, with a high near 86. Light and variable wind becoming southwest 8 to 13 mph in the morning. Chance of precipitation is 70%.
Thursday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 51. Southwest wind 8 to 17 mph becoming northwest after midnight. Winds could gust as high as 28 mph. Chance of precipitation is 50%.
Friday
Mostly sunny, with a high near 63. Breezy, with a north northwest wind 20 to 23 mph, with gusts as high as 33 mph.
Friday Night
Mostly clear, with a low around 39. North wind 11 to 16 mph decreasing to 5 to 10 mph after midnight. Winds could gust as high as 20 mph.
Saturday
Sunny, with a high near 63. Calm wind becoming northeast around 6 mph.
Saturday Night
Clear, with a low around 37. Calm wind.
Sunday
Sunny, with a high near 70. Calm wind becoming south 5 to 8 mph in the morning.
Sunday Night
Partly cloudy, with a low around 46. Light south wind.
Monday
Mostly sunny, with a high near 74. Calm wind becoming south southwest 5 to 8 mph in the morning.
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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:
11:01 am CDT Oct 13, 2026
Forecast Valid:
12pm CDT Oct 13, 2026-6pm CDT Oct 19, 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