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Hazardous Weather Conditions

Current conditions at

Mount Vernon Airport (KMVN)

Lat: 38.33°NLon: 88.85°WElev: 466ft.

Partly Cloudy

69°F

21°C

Humidity 90%
Wind Speed Calm
Barometer 30.00 in (1015.8 mb)
Dewpoint 66°F (19°C)
Visibility 10.00 mi
Last update 24 Jun 11:56 pm CDT
Extended Forecast for

Mount Vernon IL

  • Overnight

    Overnight: A chance of showers, with thunderstorms also possible after 5am. Partly cloudy, with a low around 67. Calm wind. Chance of precipitation is 30%.

    Low: 67 °F

    Chance
    Showers

  • Thursday

    Thursday: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 5pm. Mostly sunny, with a high near 86. Light and variable wind. Chance of precipitation is 60%.

    High: 86 °F

    Chance
    Showers then
    Showers
    Likely

  • Thursday Night

    Thursday Night: Showers and thunderstorms likely, then showers and possibly a thunderstorm after 4am. Low around 69. Calm wind. Chance of precipitation is 80%.

    Low: 69 °F

    Showers

  • Friday

    Friday: Showers and possibly a thunderstorm. High near 84. Light and variable wind becoming south southwest 5 to 9 mph in the morning. Chance of precipitation is 90%.

    High: 84 °F

    Showers

  • Friday Night

    Friday Night: Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 70. South southwest wind around 6 mph becoming calm in the evening. Chance of precipitation is 70%.

    Low: 70 °F

    Showers
    Likely

  • Saturday

    Saturday: Showers likely and possibly a thunderstorm. Partly sunny, with a high near 88. Calm wind becoming southwest around 6 mph in the morning. Chance of precipitation is 60%.

    High: 88 °F

    Showers
    Likely

  • Saturday Night

    Saturday Night: A 30 percent chance of showers and thunderstorms, mainly before 1am. Partly cloudy, with a low around 72. Light south wind.

    Low: 72 °F

    Chance
    T-storms

  • Sunday

    Sunday: Sunny, with a high near 94. South southwest wind 5 to 10 mph.

    High: 94 °F

    Sunny

  • Sunday Night

    Sunday Night: Clear, with a low around 74. South wind 5 to 9 mph becoming light south southwest after midnight.

    Low: 74 °F

    Clear

Detailed Forecast

Overnight
A chance of showers, with thunderstorms also possible after 5am. Partly cloudy, with a low around 67. Calm wind. Chance of precipitation is 30%.
Thursday
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 5pm. Mostly sunny, with a high near 86. Light and variable wind. Chance of precipitation is 60%.
Thursday Night
Showers and thunderstorms likely, then showers and possibly a thunderstorm after 4am. Low around 69. Calm wind. Chance of precipitation is 80%.
Friday
Showers and possibly a thunderstorm. High near 84. Light and variable wind becoming south southwest 5 to 9 mph in the morning. Chance of precipitation is 90%.
Friday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 70. South southwest wind around 6 mph becoming calm in the evening. Chance of precipitation is 70%.
Saturday
Showers likely and possibly a thunderstorm. Partly sunny, with a high near 88. Calm wind becoming southwest around 6 mph in the morning. Chance of precipitation is 60%.
Saturday Night
A 30 percent chance of showers and thunderstorms, mainly before 1am. Partly cloudy, with a low around 72. Light south wind.
Sunday
Sunny, with a high near 94. South southwest wind 5 to 10 mph.
Sunday Night
Clear, with a low around 74. South wind 5 to 9 mph becoming light south southwest after midnight.
Monday
Sunny and hot, with a high near 97. South southwest wind 3 to 8 mph.
Monday Night
Mostly clear, with a low around 75. South wind 5 to 7 mph becoming calm after midnight.
Tuesday
Sunny and hot, with a high near 98. Calm wind becoming southwest around 5 mph in the afternoon.
Tuesday Night
Clear, with a low around 76. Light south southwest wind.
Wednesday
Sunny and hot, with a high near 98. Light southwest wind.
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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:
9:51 pm CDT Jun 24, 2026
Forecast Valid:
12am CDT Jun 25, 2026-6pm CDT Jul 1, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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