Current conditions at

Mount Vernon Airport (KMVN)

Lat: 38.33°NLon: 88.85°WElev: 466ft.

Overcast

55°F

13°C

Humidity 45%
Wind Speed Vrbl 7 mph
Barometer 30.07 in (1018.6 mb)
Dewpoint 34°F (1°C)
Visibility 10.00 mi
Wind Chill53°F (12°C)
Last update 18 Apr 4:56 pm CDT
Extended Forecast for

9 Miles WSW Johnsonville IL

  • Tonight

    Tonight: Mostly clear, with a low around 37. Northwest wind 5 to 10 mph becoming light and variable  after midnight. Winds could gust as high as 18 mph.

    Low: 37 °F

    Mostly Clear

  • Sunday

    Sunday: Increasing clouds, with a high near 65. Light west southwest wind becoming west 9 to 14 mph in the morning. Winds could gust as high as 22 mph.

    High: 65 °F

    Increasing
    Clouds

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 39. Northwest wind around 6 mph becoming calm  after midnight.

    Low: 39 °F

    Partly Cloudy

  • Monday

    Monday: Sunny, with a high near 63. Calm wind becoming east around 5 mph.

    High: 63 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 46. Calm wind becoming south southeast around 6 mph in the evening.

    Low: 46 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 76. Southwest wind 7 to 14 mph, with gusts as high as 22 mph.

    High: 76 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 56. South southwest wind 7 to 9 mph, with gusts as high as 18 mph.

    Low: 56 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 78. Southwest wind 6 to 9 mph.

    High: 78 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 59. South wind around 6 mph.

    Low: 59 °F

    Mostly Clear

Detailed Forecast

Tonight
Mostly clear, with a low around 37. Northwest wind 5 to 10 mph becoming light and variable after midnight. Winds could gust as high as 18 mph.
Sunday
Increasing clouds, with a high near 65. Light west southwest wind becoming west 9 to 14 mph in the morning. Winds could gust as high as 22 mph.
Sunday Night
Partly cloudy, with a low around 39. Northwest wind around 6 mph becoming calm after midnight.
Monday
Sunny, with a high near 63. Calm wind becoming east around 5 mph.
Monday Night
Mostly clear, with a low around 46. Calm wind becoming south southeast around 6 mph in the evening.
Tuesday
Mostly sunny, with a high near 76. Southwest wind 7 to 14 mph, with gusts as high as 22 mph.
Tuesday Night
Mostly clear, with a low around 56. South southwest wind 7 to 9 mph, with gusts as high as 18 mph.
Wednesday
Sunny, with a high near 78. Southwest wind 6 to 9 mph.
Wednesday Night
Mostly clear, with a low around 59. South wind around 6 mph.
Thursday
Mostly sunny, with a high near 81. South southwest wind 6 to 14 mph, with gusts as high as 22 mph.
Thursday Night
A chance of showers. Partly cloudy, with a low around 62. South wind around 10 mph, with gusts as high as 21 mph.
Friday
Showers likely and possibly a thunderstorm. Partly sunny, with a high near 76. South wind 10 to 15 mph, with gusts as high as 22 mph.
Friday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 51. West southwest wind 8 to 10 mph becoming northwest after midnight.
Saturday
A slight chance of showers. Mostly sunny, with a high near 70. North northwest wind around 10 mph.
Basemap Options
Click map to change the forecast location
Loading map...

ABOUT THIS FORECAST

 
Point Forecast:
9 Miles WSW Johnsonville IL
 38.48°N 88.68°W
3:02 pm CDT Apr 18, 2026
5pm CDT Apr 18, 2026-6pm CDT Apr 25, 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