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.

Fair

57°F

14°C

Humidity 41%
Wind Speed Vrbl 5 mph
Barometer 30.27 in (1025.5 mb)
Dewpoint 33°F (1°C)
Visibility 8.00 mi
Last update 5 Apr 5:56 pm CDT
Extended Forecast for

9 Miles WSW Johnsonville IL

  • Tonight

    Tonight: Clear, with a low around 39. Northwest wind 5 to 7 mph becoming calm in the evening.

    Low: 39 °F

    Clear

  • Monday

    Monday: Sunny, with a high near 62. Northwest wind 5 to 9 mph.

    High: 62 °F

    Sunny

  • Monday Night

    Monday Night: Increasing clouds, with a low around 38. North wind around 7 mph.

    Low: 38 °F

    Increasing
    Clouds

  • Tuesday

    Tuesday: Partly sunny, with a high near 52. East northeast wind around 8 mph.

    High: 52 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 38. East wind around 6 mph.

    Low: 38 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 71. South wind 6 to 10 mph, with gusts as high as 18 mph.

    High: 71 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 52. South wind 7 to 10 mph, with gusts as high as 20 mph.

    Low: 52 °F

    Partly Cloudy

  • Thursday

    Thursday: A slight chance of showers. Mostly sunny, with a high near 70. South wind 9 to 13 mph, with gusts as high as 21 mph.

    High: 70 °F

    Slight Chance
    Showers

  • Thursday Night

    Thursday Night: A slight chance of showers after 1am. Mostly cloudy, with a low around 56. South wind around 6 mph.

    Low: 56 °F

    Mostly Cloudy
    then Slight
    Chance
    Showers

Detailed Forecast

Tonight
Clear, with a low around 39. Northwest wind 5 to 7 mph becoming calm in the evening.
Monday
Sunny, with a high near 62. Northwest wind 5 to 9 mph.
Monday Night
Increasing clouds, with a low around 38. North wind around 7 mph.
Tuesday
Partly sunny, with a high near 52. East northeast wind around 8 mph.
Tuesday Night
Partly cloudy, with a low around 38. East wind around 6 mph.
Wednesday
Mostly sunny, with a high near 71. South wind 6 to 10 mph, with gusts as high as 18 mph.
Wednesday Night
Partly cloudy, with a low around 52. South wind 7 to 10 mph, with gusts as high as 20 mph.
Thursday
A slight chance of showers. Mostly sunny, with a high near 70. South wind 9 to 13 mph, with gusts as high as 21 mph.
Thursday Night
A slight chance of showers after 1am. Mostly cloudy, with a low around 56. South wind around 6 mph.
Friday
A slight chance of showers, then a chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 76. South wind 6 to 9 mph.
Friday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 56. East wind around 5 mph.
Saturday
A chance of showers and thunderstorms. Partly sunny, with a high near 79. East southeast wind 6 to 8 mph becoming south in the afternoon.
Saturday Night
A slight chance of showers. Mostly cloudy, with a low around 60. South southeast wind around 7 mph.
Sunday
A chance of showers and thunderstorms. Partly sunny, with a high near 81. South wind 7 to 13 mph, with gusts as high as 21 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:
4:47 pm CDT Apr 5, 2026
Forecast Valid:
6pm CDT Apr 5, 2026-6pm CDT Apr 12, 2026
 
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Additional Resources

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Chance of Precipitation