National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

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

  • Washington's Birthday

    Washington's Birthday: Mostly sunny, with a high near 60. South southwest wind 6 to 10 mph.

    High: 60 °F

    Mostly Sunny

  • Tonight

    Tonight: Mostly cloudy, with a low around 40. South wind 5 to 7 mph.

    Low: 40 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Mostly cloudy, with a high near 61. South wind 6 to 14 mph, with gusts as high as 24 mph.

    High: 61 °F

    Mostly Cloudy

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 57. South wind 14 to 18 mph, with gusts as high as 32 mph.

    Low: 57 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 71. West southwest wind 7 to 16 mph, with gusts as high as 30 mph.

    High: 71 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: A 20 percent chance of showers after midnight. Partly cloudy, with a low around 48. South wind around 6 mph.

    Low: 48 °F

    Mostly Clear
    then Slight
    Chance
    Showers

  • Thursday

    Thursday: A chance of showers, with thunderstorms also possible after noon. Mostly sunny, with a high near 69. South southeast wind 6 to 11 mph, with gusts as high as 21 mph. Chance of precipitation is 50%.

    High: 69 °F

    Chance
    Showers then
    Chance
    T-storms

  • Thursday Night

    Thursday Night: A chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 40. West wind around 10 mph, with gusts as high as 21 mph.

    Low: 40 °F

    Chance
    T-storms then
    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 52. West wind 7 to 13 mph, with gusts as high as 21 mph.

    High: 52 °F

    Mostly Sunny

Detailed Forecast

Washington's Birthday
Mostly sunny, with a high near 60. South southwest wind 6 to 10 mph.
Tonight
Mostly cloudy, with a low around 40. South wind 5 to 7 mph.
Tuesday
Mostly cloudy, with a high near 61. South wind 6 to 14 mph, with gusts as high as 24 mph.
Tuesday Night
Mostly cloudy, with a low around 57. South wind 14 to 18 mph, with gusts as high as 32 mph.
Wednesday
Mostly sunny, with a high near 71. West southwest wind 7 to 16 mph, with gusts as high as 30 mph.
Wednesday Night
A 20 percent chance of showers after midnight. Partly cloudy, with a low around 48. South wind around 6 mph.
Thursday
A chance of showers, with thunderstorms also possible after noon. Mostly sunny, with a high near 69. South southeast wind 6 to 11 mph, with gusts as high as 21 mph. Chance of precipitation is 50%.
Thursday Night
A chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 40. West wind around 10 mph, with gusts as high as 21 mph.
Friday
Mostly sunny, with a high near 52. West wind 7 to 13 mph, with gusts as high as 21 mph.
Friday Night
A slight chance of showers. Partly cloudy, with a low around 32. North northwest wind around 6 mph.
Saturday
A slight chance of showers. Mostly sunny, with a high near 49. North northwest wind 6 to 8 mph.
Saturday Night
A chance of showers. Mostly cloudy, with a low around 29. Northwest wind around 7 mph.
Sunday
A slight chance of showers. Mostly sunny, with a high near 42. Northwest wind 8 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:
8:42 am CST Feb 16, 2026
Forecast Valid:
9am CST Feb 16, 2026-6pm CST Feb 22, 2026
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation