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Hazardous Weather Conditions

Current conditions at

Mount Vernon Airport (KMVN)

Lat: 38.33°NLon: 88.85°WElev: 466ft.

Overcast

64°F

18°C

Humidity 90%
Wind Speed SW 12 mph
Barometer 29.91 in (1013.0 mb)
Dewpoint 61°F (16°C)
Visibility 10.00 mi
Last update 10 Mar 12:56 am CDT
Extended Forecast for

9 Miles WSW Johnsonville IL

  • Overnight

    Overnight: Mostly cloudy, with a low around 61. South southwest wind around 10 mph, with gusts as high as 21 mph.

    Low: 61 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Mostly cloudy, with a high near 78. South southwest wind 8 to 16 mph, with gusts as high as 24 mph.

    High: 78 °F

    Mostly Cloudy

  • Tuesday Night

    Tuesday Night: A slight chance of showers, then a chance of showers and thunderstorms after 10pm. Cloudy, with a low around 64. South southwest wind 15 to 17 mph, with gusts as high as 29 mph. Chance of precipitation is 40%.

    Low: 64 °F

    Chance
    T-storms

  • Wednesday

    Wednesday: Showers and possibly a thunderstorm before 1pm, then showers likely. High near 69. Breezy, with a southwest wind 16 to 20 mph becoming northwest in the afternoon. Winds could gust as high as 29 mph. Chance of precipitation is 90%.

    High: 69 °F

    Showers and
    Breezy

  • Wednesday Night

    Wednesday Night: A 30 percent chance of showers before 7pm. Mostly cloudy, with a low around 33. North northwest wind 8 to 15 mph, with gusts as high as 25 mph.

    Low: 33 °F

    Chance
    Showers then
    Mostly Cloudy

  • Thursday

    Thursday: Sunny, with a high near 52. North northwest wind around 6 mph becoming west southwest in the afternoon.

    High: 52 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 42. South wind 5 to 15 mph, with gusts as high as 28 mph.

    Low: 42 °F

    Mostly Cloudy

  • Friday

    Friday: Mostly cloudy, with a high near 62. Southwest wind 9 to 15 mph, with gusts as high as 28 mph.

    High: 62 °F

    Mostly Cloudy

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 39. North northwest wind around 5 mph becoming light and variable.

    Low: 39 °F

    Mostly Cloudy

Detailed Forecast

Overnight
Mostly cloudy, with a low around 61. South southwest wind around 10 mph, with gusts as high as 21 mph.
Tuesday
Mostly cloudy, with a high near 78. South southwest wind 8 to 16 mph, with gusts as high as 24 mph.
Tuesday Night
A slight chance of showers, then a chance of showers and thunderstorms after 10pm. Cloudy, with a low around 64. South southwest wind 15 to 17 mph, with gusts as high as 29 mph. Chance of precipitation is 40%.
Wednesday
Showers and possibly a thunderstorm before 1pm, then showers likely. High near 69. Breezy, with a southwest wind 16 to 20 mph becoming northwest in the afternoon. Winds could gust as high as 29 mph. Chance of precipitation is 90%.
Wednesday Night
A 30 percent chance of showers before 7pm. Mostly cloudy, with a low around 33. North northwest wind 8 to 15 mph, with gusts as high as 25 mph.
Thursday
Sunny, with a high near 52. North northwest wind around 6 mph becoming west southwest in the afternoon.
Thursday Night
Mostly cloudy, with a low around 42. South wind 5 to 15 mph, with gusts as high as 28 mph.
Friday
Mostly cloudy, with a high near 62. Southwest wind 9 to 15 mph, with gusts as high as 28 mph.
Friday Night
Mostly cloudy, with a low around 39. North northwest wind around 5 mph becoming light and variable.
Saturday
Mostly sunny, with a high near 67. East wind 6 to 11 mph becoming south in the afternoon. Winds could gust as high as 18 mph.
Saturday Night
Mostly clear, with a low around 52. South southwest wind 8 to 13 mph, with gusts as high as 24 mph.
Sunday
Showers likely. Mostly cloudy, with a high near 64. South southwest wind 14 to 18 mph becoming west northwest in the afternoon. Winds could gust as high as 28 mph.
Sunday Night
A chance of rain and snow showers. Mostly cloudy, with a low around 29. North northwest wind 13 to 15 mph, with gusts as high as 24 mph.
Monday
Mostly sunny, with a high near 41. North northwest wind 9 to 11 mph, with gusts as high as 20 mph.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
9 Miles WSW Johnsonville IL
 38.48°N 88.68°W
Last Update:
12:01 am CDT Mar 10, 2026
Forecast Valid:
1am CDT Mar 10, 2026-6pm CDT Mar 16, 2026
 
Forecast Discussion
 
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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

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation