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.

N/A

Humidity NA
Wind Speed NA
Barometer NA
Dewpoint N/A
Visibility NA
Last update *** Not a current observation ***
Extended Forecast for

9 Miles WSW Johnsonville IL

  • Today

    Today: Partly sunny, with a high near 38. East southeast wind 8 to 11 mph.

    High: 38 °F

    Partly Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 25. East wind 3 to 7 mph.

    Low: 25 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 50. Calm wind.

    High: 50 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 35. Calm wind becoming south around 6 mph in the evening.

    Low: 35 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 59. West northwest wind 5 to 7 mph becoming light and variable in the afternoon.

    High: 59 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: A 20 percent chance of showers after midnight. Mostly cloudy, with a low around 31. North wind 3 to 5 mph.

    Low: 31 °F

    Mostly Cloudy
    then Slight
    Chance
    Showers

  • Wednesday

    Wednesday: Mostly sunny, with a high near 48. North wind 3 to 6 mph.

    High: 48 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 29. Light and variable wind.

    Low: 29 °F

    Partly Cloudy

  • Thursday

    Thursday: A slight chance of rain and snow showers after noon. Mostly cloudy, with a high near 43. East wind 3 to 6 mph.

    High: 43 °F

    Mostly Cloudy
    then Slight
    Chance
    Rain/Snow

Detailed Forecast

Today
Partly sunny, with a high near 38. East southeast wind 8 to 11 mph.
Tonight
Partly cloudy, with a low around 25. East wind 3 to 7 mph.
Monday
Mostly sunny, with a high near 50. Calm wind.
Monday Night
Mostly clear, with a low around 35. Calm wind becoming south around 6 mph in the evening.
Tuesday
Mostly sunny, with a high near 59. West northwest wind 5 to 7 mph becoming light and variable in the afternoon.
Tuesday Night
A 20 percent chance of showers after midnight. Mostly cloudy, with a low around 31. North wind 3 to 5 mph.
Wednesday
Mostly sunny, with a high near 48. North wind 3 to 6 mph.
Wednesday Night
Partly cloudy, with a low around 29. Light and variable wind.
Thursday
A slight chance of rain and snow showers after noon. Mostly cloudy, with a high near 43. East wind 3 to 6 mph.
Thursday Night
A chance of showers. Cloudy, with a low around 31. East wind around 6 mph.
Friday
A slight chance of showers. Mostly sunny, with a high near 45. East wind around 7 mph.
Friday Night
A chance of showers. Partly cloudy, with a low around 30. East wind 5 to 7 mph.
Saturday
A chance of showers. Partly sunny, with a high near 46. East southeast wind 6 to 9 mph.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
9 Miles WSW Johnsonville IL
 38.48°N 88.68°W
Last Update:
10:27 am CST Feb 8, 2026
Forecast Valid:
10am CST Feb 8, 2026-6pm CST Feb 14, 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