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.

Fair

20°F

-7°C

Humidity 65%
Wind Speed Vrbl 6 mph
Barometer 30.25 in (1025.6 mb)
Dewpoint 10°F (-12°C)
Visibility 10.00 mi
Wind Chill12°F (-11°C)
Last update 19 Jan 6:56 am CST
Extended Forecast for

9 Miles WSW Johnsonville IL

  • M.L.King Day

    M.L.King Day: Sunny, with a steady temperature around 16. Wind chill values as low as -4. West northwest wind 8 to 17 mph, with gusts as high as 26 mph.

    High: 16 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 10. West northwest wind around 5 mph becoming calm in the evening.

    Low: 10 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 35. Calm wind becoming south southwest 5 to 9 mph in the morning.

    High: 35 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Increasing clouds, with a low around 25. South wind 6 to 14 mph, with gusts as high as 28 mph.

    Low: 25 °F

    Increasing
    Clouds

  • Wednesday

    Wednesday: Mostly sunny, with a high near 46. West southwest wind 6 to 15 mph, with gusts as high as 28 mph.

    High: 46 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 23. West wind around 6 mph.

    Low: 23 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 35. West northwest wind 3 to 7 mph.

    High: 35 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 19. Calm wind becoming north around 6 mph after midnight.

    Low: 19 °F

    Partly Cloudy

  • Friday

    Friday: Mostly cloudy, with a high near 27. North wind 7 to 10 mph.

    High: 27 °F

    Mostly Cloudy

Detailed Forecast

M.L.King Day
Sunny, with a steady temperature around 16. Wind chill values as low as -4. West northwest wind 8 to 17 mph, with gusts as high as 26 mph.
Tonight
Mostly clear, with a low around 10. West northwest wind around 5 mph becoming calm in the evening.
Tuesday
Mostly sunny, with a high near 35. Calm wind becoming south southwest 5 to 9 mph in the morning.
Tuesday Night
Increasing clouds, with a low around 25. South wind 6 to 14 mph, with gusts as high as 28 mph.
Wednesday
Mostly sunny, with a high near 46. West southwest wind 6 to 15 mph, with gusts as high as 28 mph.
Wednesday Night
Partly cloudy, with a low around 23. West wind around 6 mph.
Thursday
Mostly sunny, with a high near 35. West northwest wind 3 to 7 mph.
Thursday Night
Partly cloudy, with a low around 19. Calm wind becoming north around 6 mph after midnight.
Friday
Mostly cloudy, with a high near 27. North wind 7 to 10 mph.
Friday Night
A slight chance of snow showers. Mostly cloudy, with a low around 3. North wind 8 to 10 mph, with gusts as high as 18 mph.
Saturday
A slight chance of snow showers. Mostly cloudy, with a high near 16. North northeast wind 8 to 10 mph, with gusts as high as 18 mph.
Saturday Night
A chance of snow showers. Mostly cloudy, with a low around 7. North northeast wind around 7 mph.
Sunday
Mostly sunny, with a high near 24. North northeast wind around 7 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:
7:01 am CST Jan 19, 2026
Forecast Valid:
7am CST Jan 19, 2026-6pm CST Jan 25, 2026
 
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