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

53°F

12°C

Humidity 57%
Wind Speed Vrbl 7 mph
Barometer 30.31 in (1027.0 mb)
Dewpoint 38°F (3°C)
Visibility 10.00 mi
Wind Chill51°F (11°C)
Last update 6 Apr 8:56 am CDT
Extended Forecast for

9 Miles WSW Johnsonville IL

  • Today

    Today: Sunny, with a high near 62. Northwest wind 8 to 11 mph, with gusts as high as 22 mph.

    High: 62 °F

    Sunny

  • Tonight

    Tonight: Increasing clouds, with a low around 39. North wind 5 to 8 mph.

    Low: 39 °F

    Increasing
    Clouds

  • Tuesday

    Tuesday: Partly sunny, with a high near 52. East northeast wind 7 to 9 mph.

    High: 52 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 37. East southeast wind around 6 mph.

    Low: 37 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 71. South wind 6 to 11 mph.

    High: 71 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 51. South wind 7 to 9 mph, with gusts as high as 20 mph.

    Low: 51 °F

    Partly Cloudy

  • Thursday

    Thursday: A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 69. South wind 9 to 13 mph, with gusts as high as 21 mph.

    High: 69 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Thursday Night

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

    Low: 56 °F

    Slight Chance
    T-storms then
    Chance
    Showers

  • Friday

    Friday: A chance of showers and thunderstorms. Partly sunny, with a high near 73. South wind around 7 mph.

    High: 73 °F

    Chance
    Showers then
    Chance
    T-storms

Detailed Forecast

Today
Sunny, with a high near 62. Northwest wind 8 to 11 mph, with gusts as high as 22 mph.
Tonight
Increasing clouds, with a low around 39. North wind 5 to 8 mph.
Tuesday
Partly sunny, with a high near 52. East northeast wind 7 to 9 mph.
Tuesday Night
Partly cloudy, with a low around 37. East southeast wind around 6 mph.
Wednesday
Partly sunny, with a high near 71. South wind 6 to 11 mph.
Wednesday Night
Partly cloudy, with a low around 51. South wind 7 to 9 mph, with gusts as high as 20 mph.
Thursday
A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 69. South wind 9 to 13 mph, with gusts as high as 21 mph.
Thursday Night
A chance of showers and thunderstorms, mainly after 1am. Mostly cloudy, with a low around 56. South wind around 6 mph.
Friday
A chance of showers and thunderstorms. Partly sunny, with a high near 73. South wind around 7 mph.
Friday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 55. Light and variable wind becoming east around 5 mph after midnight.
Saturday
A chance of showers and thunderstorms. Partly sunny, with a high near 78. East wind 6 to 8 mph becoming south in the morning.
Saturday Night
Partly cloudy, with a low around 60. South southeast wind around 6 mph.
Sunday
A chance of showers and thunderstorms. Partly sunny, with a high near 80. South wind 7 to 14 mph, with gusts as high as 22 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:
5:31 am CDT Apr 6, 2026
Forecast Valid:
9am CDT Apr 6, 2026-6pm CDT Apr 12, 2026
 
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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