National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

Mount Vernon Airport (KMVN)

Lat: 38.33°NLon: 88.85°WElev: 466ft.

Mostly Cloudy

82°F

28°C

Humidity 55%
Wind Speed N 5 mph
Barometer 30.04 in (1017.2 mb)
Dewpoint 64°F (18°C)
Visibility 10.00 mi
Heat Index84°F (29°C)
Last update 22 Aug 2:56 pm CDT
Extended Forecast for

3 Miles SSE Mount Vernon IL

  • This Afternoon

    This Afternoon: Mostly sunny, with a high near 82. Northeast wind around 6 mph.

    High: 82 °F

    Mostly Sunny

  • Tonight

    Tonight: Patchy fog after 1am. Otherwise, mostly clear, with a low around 62. Light and variable wind.

    Low: 62 °F

    Mostly Clear
    then Patchy
    Fog

  • Saturday

    Saturday: Patchy fog before 8am. Otherwise, mostly sunny, with a high near 88. Calm wind becoming north northwest around 6 mph in the afternoon.

    High: 88 °F

    Patchy Fog
    then Partly
    Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, then gradually becoming clear, with a low around 60. Light north northwest wind.

    Low: 60 °F

    Decreasing
    Clouds

  • Sunday

    Sunday: Sunny, with a high near 80. North northwest wind 5 to 11 mph.

    High: 80 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 54. North northwest wind 5 to 7 mph becoming calm in the evening.

    Low: 54 °F

    Mostly Clear

  • Monday

    Monday: Mostly sunny, with a high near 78. Light north northwest wind becoming northwest 6 to 11 mph in the morning.

    High: 78 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 52. North northwest wind around 5 mph becoming calm in the evening.

    Low: 52 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Sunny, with a high near 78. Calm wind becoming north northwest 5 to 8 mph in the afternoon.

    High: 78 °F

    Sunny

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 82. Northeast wind around 6 mph.
Tonight
Patchy fog after 1am. Otherwise, mostly clear, with a low around 62. Light and variable wind.
Saturday
Patchy fog before 8am. Otherwise, mostly sunny, with a high near 88. Calm wind becoming north northwest around 6 mph in the afternoon.
Saturday Night
Mostly cloudy, then gradually becoming clear, with a low around 60. Light north northwest wind.
Sunday
Sunny, with a high near 80. North northwest wind 5 to 11 mph.
Sunday Night
Mostly clear, with a low around 54. North northwest wind 5 to 7 mph becoming calm in the evening.
Monday
Mostly sunny, with a high near 78. Light north northwest wind becoming northwest 6 to 11 mph in the morning.
Monday Night
Partly cloudy, with a low around 52. North northwest wind around 5 mph becoming calm in the evening.
Tuesday
Sunny, with a high near 78. Calm wind becoming north northwest 5 to 8 mph in the afternoon.
Tuesday Night
Clear, with a low around 51. Light north wind.
Wednesday
Sunny, with a high near 81. Calm wind becoming north around 5 mph in the afternoon.
Wednesday Night
Mostly clear, with a low around 54. Calm wind.
Thursday
Sunny, with a high near 82. Light south southwest wind.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles SSE Mount Vernon IL
 38.29°N 88.89°W
Last Update:
1:45 pm CDT Aug 22, 2025
Forecast Valid:
3pm CDT Aug 22, 2025-6pm CDT Aug 28, 2025
 
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