Current conditions at

Mount Vernon Airport (KMVN)

Lat: 38.33°NLon: 88.85°WElev: 466ft.

Overcast

67°F

19°C

Humidity 91%
Wind Speed S 9 mph
Barometer 29.98 in (1015.6 mb)
Dewpoint 64°F (18°C)
Visibility 10.00 mi
Last update 5 Mar 2:56 pm CST
Extended Forecast for

9 Miles WSW Johnsonville IL

  • This Afternoon

    This Afternoon: A 30 percent chance of showers, mainly before 4pm.  Mostly cloudy, with a steady temperature around 66. West wind 5 to 7 mph becoming calm.

    High: 66 °F

    Chance
    Showers

  • Tonight

    Tonight: A chance of showers and thunderstorms, then showers likely after 3am.  Mostly cloudy, with a low around 58. Calm wind becoming south southeast around 6 mph after midnight.  Chance of precipitation is 60%.

    Low: 58 °F

    Chance
    Showers then
    Showers
    Likely

  • Friday

    Friday: A 30 percent chance of showers before 9am.  Partly sunny, with a high near 76. South wind 6 to 16 mph, with gusts as high as 24 mph.

    High: 76 °F

    Chance
    Showers then
    Partly Sunny

  • Friday Night

    Friday Night: Showers likely and possibly a thunderstorm after midnight.  Mostly cloudy, with a low around 63. South wind 10 to 14 mph, with gusts as high as 26 mph.  Chance of precipitation is 70%.

    Low: 63 °F

    Mostly Cloudy
    then Showers
    Likely

  • Saturday

    Saturday: Showers and possibly a thunderstorm before noon, then a chance of showers and thunderstorms after noon.  High near 71. South southwest wind 8 to 14 mph becoming west northwest in the afternoon. Winds could gust as high as 26 mph.  Chance of precipitation is 90%.

    High: 71 °F

    Showers then
    Chance
    T-storms

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 40. West northwest wind 5 to 7 mph becoming calm  after midnight.

    Low: 40 °F

    Partly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 64. Calm wind becoming west southwest around 6 mph in the morning.

    High: 64 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 48. South southwest wind 3 to 6 mph.

    Low: 48 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 74. South southwest wind 6 to 13 mph, with gusts as high as 20 mph.

    High: 74 °F

    Sunny

Detailed Forecast

This Afternoon
A 30 percent chance of showers, mainly before 4pm. Mostly cloudy, with a steady temperature around 66. West wind 5 to 7 mph becoming calm.
Tonight
A chance of showers and thunderstorms, then showers likely after 3am. Mostly cloudy, with a low around 58. Calm wind becoming south southeast around 6 mph after midnight. Chance of precipitation is 60%.
Friday
A 30 percent chance of showers before 9am. Partly sunny, with a high near 76. South wind 6 to 16 mph, with gusts as high as 24 mph.
Friday Night
Showers likely and possibly a thunderstorm after midnight. Mostly cloudy, with a low around 63. South wind 10 to 14 mph, with gusts as high as 26 mph. Chance of precipitation is 70%.
Saturday
Showers and possibly a thunderstorm before noon, then a chance of showers and thunderstorms after noon. High near 71. South southwest wind 8 to 14 mph becoming west northwest in the afternoon. Winds could gust as high as 26 mph. Chance of precipitation is 90%.
Saturday Night
Partly cloudy, with a low around 40. West northwest wind 5 to 7 mph becoming calm after midnight.
Sunday
Sunny, with a high near 64. Calm wind becoming west southwest around 6 mph in the morning.
Sunday Night
Mostly clear, with a low around 48. South southwest wind 3 to 6 mph.
Monday
Sunny, with a high near 74. South southwest wind 6 to 13 mph, with gusts as high as 20 mph.
Monday Night
A slight chance of showers, then a chance of showers and thunderstorms after midnight. Partly cloudy, with a low around 60. South southwest wind around 8 mph, with gusts as high as 18 mph.
Tuesday
Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 76. South southwest wind 8 to 15 mph, with gusts as high as 24 mph.
Tuesday Night
Showers and possibly a thunderstorm. Mostly cloudy, with a low around 58. South southwest wind 11 to 15 mph, with gusts as high as 26 mph.
Wednesday
Showers. Mostly cloudy, with a high near 68. South southwest wind 11 to 15 mph becoming north northwest in the afternoon. Winds could gust as high as 26 mph.
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ABOUT THIS FORECAST

 
Point Forecast:
9 Miles WSW Johnsonville IL
 38.48°N 88.68°W
1:46 pm CST Mar 5, 2026
3pm CST Mar 5, 2026-6pm CDT Mar 11, 2026
 
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Additional Resources

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