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Hazardous Weather Conditions

Current conditions at

Mount Vernon Airport (KMVN)

Lat: 38.33°NLon: 88.85°WElev: 466ft.

Overcast

72°F

22°C

Humidity 94%
Wind Speed Vrbl 7 mph
Barometer 30.02 in (1016.8 mb)
Dewpoint 70°F (21°C)
Visibility 10.00 mi
Last update 26 Jun 9:56 am CDT
Extended Forecast for

Mount Vernon IL

Flood Watch June 26, 10:01am until June 28, 07:00am
Click here for hazard details and duration
Flood Watch
  •  
    Flood Watch June 26, 10:01am until June 28, 07:00am

    NOW until 7:00am Sun

    Flood Watch

  • Today

    High: 80 °F

    Showers then
    T-storms

  • Tonight

    Tonight: Showers and thunderstorms likely, mainly before 8pm. Mostly cloudy, with a low around 69. South southwest wind 5 to 8 mph becoming calm in the evening. Chance of precipitation is 70%.

    Low: 69 °F

    T-storms
    Likely then
    Chance
    T-storms

  • Saturday

    Saturday: A 30 percent chance of showers and thunderstorms after 4pm. Partly sunny, with a high near 85. Calm wind.

    High: 85 °F

    Partly Sunny
    then Chance
    T-storms

  • Saturday Night

    Saturday Night: A 40 percent chance of showers and thunderstorms, mainly after 1am. Partly cloudy, with a low around 71. Calm wind.

    Low: 71 °F

    Chance
    T-storms then
    Chance
    Showers

  • Sunday

    Sunday: Sunny, with a high near 93. South southwest wind 3 to 8 mph.

    High: 93 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 74. South wind 5 to 7 mph becoming calm after midnight.

    Low: 74 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 95. Calm wind becoming south southwest around 6 mph in the morning.

    High: 95 °F

    Sunny

  • Monday Night

    Monday Night: Clear, with a low around 76. South wind around 5 mph becoming calm in the evening.

    Low: 76 °F

    Clear

Detailed Forecast

Today
Showers and thunderstorms before 3pm, then showers likely and possibly a thunderstorm between 3pm and 4pm, then showers and thunderstorms after 4pm. High near 80. South southwest wind 6 to 10 mph, with gusts as high as 18 mph. Chance of precipitation is 90%.
Tonight
Showers and thunderstorms likely, mainly before 8pm. Mostly cloudy, with a low around 69. South southwest wind 5 to 8 mph becoming calm in the evening. Chance of precipitation is 70%.
Saturday
A 30 percent chance of showers and thunderstorms after 4pm. Partly sunny, with a high near 85. Calm wind.
Saturday Night
A 40 percent chance of showers and thunderstorms, mainly after 1am. Partly cloudy, with a low around 71. Calm wind.
Sunday
Sunny, with a high near 93. South southwest wind 3 to 8 mph.
Sunday Night
Mostly clear, with a low around 74. South wind 5 to 7 mph becoming calm after midnight.
Monday
Sunny, with a high near 95. Calm wind becoming south southwest around 6 mph in the morning.
Monday Night
Clear, with a low around 76. South wind around 5 mph becoming calm in the evening.
Tuesday
Sunny, with a high near 96. Light south southwest wind.
Tuesday Night
Clear, with a low around 76. Calm wind.
Wednesday
Sunny and hot, with a high near 97. Calm wind.
Wednesday Night
Clear, with a low around 76. Calm wind.
Thursday
Sunny and hot, with a high near 97. Calm wind.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Mount Vernon IL
 38.31°N 88.91°W
Last Update:
8:31 am CDT Jun 26, 2026
Forecast Valid:
10am CDT Jun 26, 2026-6pm CDT Jul 2, 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