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

  • This Afternoon

    This Afternoon: Mostly cloudy, with a high near 32. South wind 6 to 8 mph.

    High: 32 °F

    Mostly Cloudy

  • Tonight

    Tonight: Mostly cloudy, with a low around 26. South wind around 6 mph becoming light and variable.

    Low: 26 °F

    Mostly Cloudy

  • Friday

    Friday: Increasing clouds, with a high near 45. West wind 6 to 13 mph becoming north northwest in the afternoon. Winds could gust as high as 21 mph.

    High: 45 °F

    Increasing
    Clouds

  • Friday Night

    Friday Night: Mostly cloudy, then gradually becoming mostly clear, with a low around 21. North northwest wind 6 to 8 mph.

    Low: 21 °F

    Decreasing
    Clouds

  • Saturday

    Saturday: Sunny, with a high near 31. North northeast wind around 6 mph becoming calm in the afternoon.

    High: 31 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 21. Calm wind becoming south southeast around 6 mph after midnight.

    Low: 21 °F

    Mostly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 49. South wind 3 to 7 mph.

    High: 49 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 28. Calm wind.

    Low: 28 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 54. Light south southwest wind.

    High: 54 °F

    Sunny

Detailed Forecast

This Afternoon
Mostly cloudy, with a high near 32. South wind 6 to 8 mph.
Tonight
Mostly cloudy, with a low around 26. South wind around 6 mph becoming light and variable.
Friday
Increasing clouds, with a high near 45. West wind 6 to 13 mph becoming north northwest in the afternoon. Winds could gust as high as 21 mph.
Friday Night
Mostly cloudy, then gradually becoming mostly clear, with a low around 21. North northwest wind 6 to 8 mph.
Saturday
Sunny, with a high near 31. North northeast wind around 6 mph becoming calm in the afternoon.
Saturday Night
Mostly cloudy, with a low around 21. Calm wind becoming south southeast around 6 mph after midnight.
Sunday
Mostly sunny, with a high near 49. South wind 3 to 7 mph.
Sunday Night
Mostly clear, with a low around 28. Calm wind.
Monday
Sunny, with a high near 54. Light south southwest wind.
Monday Night
Mostly clear, with a low around 39. Calm wind becoming south southwest around 5 mph after midnight.
Tuesday
A slight chance of showers. Partly sunny, with a high near 60. South southwest wind 5 to 8 mph.
Tuesday Night
A chance of showers. Mostly cloudy, with a low around 41. South southwest wind around 6 mph becoming north northeast after midnight.
Wednesday
A chance of showers. Mostly cloudy, with a high near 54. North wind 6 to 8 mph becoming south in the afternoon.
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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:
10:42 am CST Feb 5, 2026
Forecast Valid:
1pm CST Feb 5, 2026-6pm CST Feb 11, 2026
 
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Additional Resources

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Chance of Precipitation