Current conditions at

Mount Vernon Airport (KMVN)

Lat: 38.33°NLon: 88.85°WElev: 466ft.

A Few Clouds

75°F

24°C

Humidity 94%
Wind Speed NE 3 mph
Barometer 29.98 in (1015.1 mb)
Dewpoint 73°F (23°C)
Visibility 10.00 mi
Last update 25 Jul 10:56 pm CDT
Extended Forecast for

3 Miles ENE Mount Vernon IL

Heat Advisory July 26, 11:00am until July 28, 07:00pm
Click here for hazard details and duration
Heat Advisory
  • Tonight

    Tonight: Patchy fog after 1am.  Otherwise, increasing clouds, with a low around 72. Calm wind.

    Low: 72 °F

    Patchy Fog

  • Sunday

    Sunday: A 30 percent chance of showers and thunderstorms, mainly before noon.  Patchy fog before 8am.  Otherwise, mostly sunny, with a high near 93. Heat index values as high as 107. Calm wind.

    High: 93 °F

    Chance
    T-storms and
    Patchy Fog

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 75. Calm wind.

    Low: 75 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny and hot, with a high near 97. Heat index values as high as 113. Calm wind becoming southwest 5 to 9 mph in the morning.

    High: 97 °F

    Hot

  • Monday Night

    Monday Night: Mostly clear, with a low around 77. South southwest wind 6 to 8 mph.

    Low: 77 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 93. Northwest wind 5 to 10 mph.

    High: 93 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 69. North wind 5 to 8 mph becoming calm  after midnight.

    Low: 69 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Sunny, with a high near 89. Calm wind becoming north 5 to 7 mph in the morning.

    High: 89 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 66. North wind around 6 mph becoming calm  in the evening.

    Low: 66 °F

    Mostly Clear

Detailed Forecast

Tonight
Patchy fog after 1am. Otherwise, increasing clouds, with a low around 72. Calm wind.
Sunday
A 30 percent chance of showers and thunderstorms, mainly before noon. Patchy fog before 8am. Otherwise, mostly sunny, with a high near 93. Heat index values as high as 107. Calm wind.
Sunday Night
Partly cloudy, with a low around 75. Calm wind.
Monday
Mostly sunny and hot, with a high near 97. Heat index values as high as 113. Calm wind becoming southwest 5 to 9 mph in the morning.
Monday Night
Mostly clear, with a low around 77. South southwest wind 6 to 8 mph.
Tuesday
Sunny, with a high near 93. Northwest wind 5 to 10 mph.
Tuesday Night
Partly cloudy, with a low around 69. North wind 5 to 8 mph becoming calm after midnight.
Wednesday
Sunny, with a high near 89. Calm wind becoming north 5 to 7 mph in the morning.
Wednesday Night
Mostly clear, with a low around 66. North wind around 6 mph becoming calm in the evening.
Thursday
Sunny, with a high near 88. Light northeast wind.
Thursday Night
Partly cloudy, with a low around 68. Light northeast wind.
Friday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 88. Calm wind becoming north northeast around 5 mph in the afternoon.
Friday Night
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 69. Northeast wind around 5 mph becoming calm in the evening.
Saturday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 88. Calm wind becoming north around 6 mph in the afternoon.
Basemap Options
Click map to change the forecast location
Loading map...

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles ENE Mount Vernon IL
 38.33°N 88.86°W
9:06 pm CDT Jul 25, 2026
11pm CDT Jul 25, 2026-6pm CDT Aug 1, 2026
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database