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Hazardous Weather Conditions

Current conditions at

Mount Vernon Airport (KMVN)

Lat: 38.33°NLon: 88.85°WElev: 466ft.

Fair

44°F

7°C

Humidity 58%
Wind Speed S 9 mph
Barometer 30.01 in (1016.6 mb)
Dewpoint 30°F (-1°C)
Visibility 10.00 mi
Wind Chill39°F (4°C)
Last update 12 Mar 11:56 pm CDT
Extended Forecast for

9 Miles WSW Johnsonville IL

  • Overnight

    Overnight: Mostly cloudy, with a steady temperature around 44. South southwest wind 11 to 18 mph, with gusts as high as 33 mph.

    Low: 44 °F

    Mostly Cloudy

  • Friday

    Friday: Partly sunny, with a high near 60. Breezy, with a west wind 15 to 20 mph, with gusts as high as 36 mph.

    High: 60 °F

    Partly Sunny
    and Breezy

  • Friday Night

    Friday Night: Mostly clear, with a low around 35. West northwest wind 5 to 7 mph becoming light and variable.

    Low: 35 °F

    Mostly Clear

  • Saturday

    Saturday: Mostly sunny, with a high near 64. East wind 6 to 13 mph becoming south southeast in the afternoon. Winds could gust as high as 18 mph.

    High: 64 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 52. Southeast wind 7 to 10 mph, with gusts as high as 22 mph.

    Low: 52 °F

    Mostly Cloudy

  • Sunday

    Sunday: Showers likely, with thunderstorms also possible after 4pm. Mostly cloudy, with a high near 70. Breezy, with a south wind 14 to 24 mph, with gusts as high as 34 mph. Chance of precipitation is 70%.

    High: 70 °F

    Breezy.
    Slight Chance
    Showers then
    Showers
    Likely

  • Sunday Night

    Sunday Night: Rain showers before 1am, then a chance of rain and snow showers. Some thunder is also possible. Low around 24. Blustery, with a south southwest wind 20 to 23 mph becoming west northwest after midnight. Winds could gust as high as 37 mph. Chance of precipitation is 80%.

    Low: 24 °F

    Showers and
    Breezy then
    Rain/Snow and
    Blustery

  • Monday

    Monday: A slight chance of snow showers before 1pm. Mostly cloudy, with a high near 30. Blustery, with a west northwest wind 21 to 24 mph, with gusts as high as 34 mph.

    High: 30 °F

    Slight Chance
    Snow Showers
    and Blustery

  • Monday Night

    Monday Night: Mostly clear, with a low around 13. West northwest wind 9 to 15 mph, with gusts as high as 23 mph.

    Low: 13 °F

    Mostly Clear

Detailed Forecast

Overnight
Mostly cloudy, with a steady temperature around 44. South southwest wind 11 to 18 mph, with gusts as high as 33 mph.
Friday
Partly sunny, with a high near 60. Breezy, with a west wind 15 to 20 mph, with gusts as high as 36 mph.
Friday Night
Mostly clear, with a low around 35. West northwest wind 5 to 7 mph becoming light and variable.
Saturday
Mostly sunny, with a high near 64. East wind 6 to 13 mph becoming south southeast in the afternoon. Winds could gust as high as 18 mph.
Saturday Night
Mostly cloudy, with a low around 52. Southeast wind 7 to 10 mph, with gusts as high as 22 mph.
Sunday
Showers likely, with thunderstorms also possible after 4pm. Mostly cloudy, with a high near 70. Breezy, with a south wind 14 to 24 mph, with gusts as high as 34 mph. Chance of precipitation is 70%.
Sunday Night
Rain showers before 1am, then a chance of rain and snow showers. Some thunder is also possible. Low around 24. Blustery, with a south southwest wind 20 to 23 mph becoming west northwest after midnight. Winds could gust as high as 37 mph. Chance of precipitation is 80%.
Monday
A slight chance of snow showers before 1pm. Mostly cloudy, with a high near 30. Blustery, with a west northwest wind 21 to 24 mph, with gusts as high as 34 mph.
Monday Night
Mostly clear, with a low around 13. West northwest wind 9 to 15 mph, with gusts as high as 23 mph.
Tuesday
Mostly sunny, with a high near 34. West wind 7 to 9 mph.
Tuesday Night
A slight chance of rain and snow showers. Mostly cloudy, with a low around 24. West southwest wind 5 to 8 mph becoming southeast in the evening.
Wednesday
A slight chance of rain and snow showers. Partly sunny, with a high near 52. South wind around 10 mph, with gusts as high as 18 mph.
Wednesday Night
Mostly cloudy, with a low around 37. South southwest wind around 6 mph.
Thursday
Mostly sunny, with a high near 63. South southwest wind 6 to 9 mph.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
9 Miles WSW Johnsonville IL
 38.48°N 88.68°W
Last Update:
11:56 pm CDT Mar 12, 2026
Forecast Valid:
12am CDT Mar 13, 2026-6pm CDT Mar 19, 2026
 
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Additional Resources

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Hourly Weather Forecast

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation