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.

Fair

73°F

23°C

Humidity 96%
Wind Speed N 5 mph
Barometer 30.03 in (1016.9 mb)
Dewpoint 72°F (22°C)
Visibility 10.00 mi
Last update 11 Jul 10:56 pm CDT
Extended Forecast for

3 Miles S Mount Vernon IL

Flood Watch July 11, 11:48pm until July 12, 01:00am
Click here for hazard details and duration
Flood Watch
  •  
    Flood Watch July 11, 11:48pm until July 12, 01:00am

    NOW until 1:00am Sun

    Flood Watch

  • Tonight

    Low: 68 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 86. North northeast wind 5 to 10 mph.

    High: 86 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 67. North northeast wind 5 to 8 mph becoming calm in the evening.

    Low: 67 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 87. North northeast wind 5 to 10 mph.

    High: 87 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 68. North northeast wind around 6 mph becoming calm in the evening.

    Low: 68 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 89. Calm wind becoming east northeast 5 to 8 mph in the morning.

    High: 89 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 70. Light and variable wind.

    Low: 70 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 90. Calm wind.

    High: 90 °F

    Sunny

Detailed Forecast

Tonight
Partly cloudy, with a low around 68. Light north northeast wind.
Sunday
Mostly sunny, with a high near 86. North northeast wind 5 to 10 mph.
Sunday Night
Mostly clear, with a low around 67. North northeast wind 5 to 8 mph becoming calm in the evening.
Monday
Sunny, with a high near 87. North northeast wind 5 to 10 mph.
Monday Night
Mostly clear, with a low around 68. North northeast wind around 6 mph becoming calm in the evening.
Tuesday
Sunny, with a high near 89. Calm wind becoming east northeast 5 to 8 mph in the morning.
Tuesday Night
Mostly clear, with a low around 70. Light and variable wind.
Wednesday
Sunny, with a high near 90. Calm wind.
Wednesday Night
Mostly clear, with a low around 72. Calm wind.
Thursday
A slight chance of showers and thunderstorms after 1pm. Sunny, with a high near 91. Light and variable wind.
Thursday Night
Mostly clear, with a low around 73. Calm wind.
Friday
Sunny, with a high near 92. Calm wind becoming west around 5 mph in the afternoon.
Friday Night
Mostly clear, with a low around 74. Calm wind.
Saturday
Sunny, with a high near 93. Calm wind becoming west southwest 5 to 7 mph in the morning.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles S Mount Vernon IL
 38.29°N 88.89°W
Last Update:
11:11 pm CDT Jul 11, 2026
Forecast Valid:
11pm CDT Jul 11, 2026-6pm CDT Jul 18, 2026
 
Forecast Discussion
 
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

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation