Current conditions at

Mount Vernon Airport (KMVN)

Lat: 38.33°NLon: 88.85°WElev: 466ft.

Fair

47°F

8°C

Humidity 36%
Wind Speed W 9 mph
Barometer 30.06 in (1018.5 mb)
Dewpoint 21°F (-6°C)
Visibility 10.00 mi
Wind Chill43°F (6°C)
Last update 21 Jan 4:56 pm CST
Extended Forecast for

9 Miles WSW Johnsonville IL

Winter Storm Watch January 24, 12:00am until January 25, 12:00pm
Click here for hazard details and duration
Winter Storm Watch
  • Tonight

    Tonight: Increasing clouds, with a low around 23. West southwest wind 5 to 7 mph becoming northwest after midnight.

    Low: 23 °F

    Increasing
    Clouds

  • Thursday

    Thursday: Mostly sunny, with a high near 38. Light west northwest wind.

    High: 38 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 14. Light and variable wind becoming north 6 to 11 mph after midnight. Winds could gust as high as 22 mph.

    Low: 14 °F

    Mostly Cloudy

  • Friday

    Friday: Mostly cloudy, with a high near 18. Wind chill values as low as -1. North wind 10 to 14 mph, with gusts as high as 23 mph.

    High: 18 °F

    Mostly Cloudy

  • Friday Night

    Friday Night: A 20 percent chance of snow showers after midnight.  Cloudy, with a low around 5. North northeast wind around 10 mph, with gusts as high as 21 mph.

    Low: 5 °F

    Cloudy then
    Slight Chance
    Snow Showers

  • Saturday

    Saturday: Snow showers likely, mainly after noon.  Cloudy, with a high near 15. Northeast wind around 10 mph, with gusts as high as 20 mph.  Chance of precipitation is 70%.

    High: 15 °F

    Snow Showers
    Likely

  • Saturday Night

    Saturday Night: Snow showers.  Low around 10. Northeast wind around 8 mph.  Chance of precipitation is 80%.

    Low: 10 °F

    Snow Showers

  • Sunday

    Sunday: A chance of snow showers, mainly before noon.  Mostly cloudy, with a high near 18. North wind around 8 mph.

    High: 18 °F

    Chance Snow
    Showers

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 1. West northwest wind around 6 mph.

    Low: 1 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Increasing clouds, with a low around 23. West southwest wind 5 to 7 mph becoming northwest after midnight.
Thursday
Mostly sunny, with a high near 38. Light west northwest wind.
Thursday Night
Mostly cloudy, with a low around 14. Light and variable wind becoming north 6 to 11 mph after midnight. Winds could gust as high as 22 mph.
Friday
Mostly cloudy, with a high near 18. Wind chill values as low as -1. North wind 10 to 14 mph, with gusts as high as 23 mph.
Friday Night
A 20 percent chance of snow showers after midnight. Cloudy, with a low around 5. North northeast wind around 10 mph, with gusts as high as 21 mph.
Saturday
Snow showers likely, mainly after noon. Cloudy, with a high near 15. Northeast wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 70%.
Saturday Night
Snow showers. Low around 10. Northeast wind around 8 mph. Chance of precipitation is 80%.
Sunday
A chance of snow showers, mainly before noon. Mostly cloudy, with a high near 18. North wind around 8 mph.
Sunday Night
Mostly cloudy, with a low around 1. West northwest wind around 6 mph.
Monday
Mostly sunny, with a high near 16. West northwest wind around 7 mph.
Monday Night
Mostly clear, with a low around 2. West southwest wind around 5 mph.
Tuesday
Mostly sunny, with a high near 26. South southwest wind 5 to 7 mph.
Tuesday Night
Mostly cloudy, with a low around 13. Southwest wind around 6 mph.
Wednesday
Partly sunny, with a high near 28. West northwest wind 6 to 9 mph.
Basemap Options
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ABOUT THIS FORECAST

 
Point Forecast:
9 Miles WSW Johnsonville IL
 38.48°N 88.68°W
3:41 pm CST Jan 21, 2026
5pm CST Jan 21, 2026-6pm CST Jan 28, 2026
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database