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.

Overcast

N/A

Humidity NA
Wind Speed Calm
Barometer 30.05 in
Dewpoint N/A
Visibility 8.00 mi
Last update 7 Dec 12:56 pm CST
Extended Forecast for

Du Bois IL

  • This Afternoon

    This Afternoon: A slight chance of drizzle. Cloudy, with a high near 45. North wind 9 to 13 mph.

    High: 45 °F

    Slight Chance
    Drizzle

  • Tonight

    Tonight: A slight chance of drizzle before 8pm, then a slight chance of snow between 8pm and midnight. Mostly cloudy, with a low around 25. North wind 8 to 11 mph. Chance of precipitation is 20%.

    Low: 25 °F

    Slight Chance
    Drizzle/Snow
    then Mostly
    Cloudy

  • Monday

    Monday: Mostly cloudy, then gradually becoming sunny, with a high near 36. North wind 5 to 7 mph becoming calm in the afternoon.

    High: 36 °F

    Decreasing
    Clouds

  • Monday Night

    Monday Night: Partly cloudy, with a low around 26. Light and variable wind becoming southwest 8 to 13 mph after midnight. Winds could gust as high as 20 mph.

    Low: 26 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 49. South wind 14 to 17 mph, with gusts as high as 24 mph.

    High: 49 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 41.

    Low: 41 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 51.

    High: 51 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: A slight chance of rain before midnight, then a slight chance of rain and snow. Mostly cloudy, with a low around 28. Chance of precipitation is 20%.

    Low: 28 °F

    Slight Chance
    Rain then
    Slight Chance
    Rain/Snow

  • Thursday

    Thursday: A chance of rain and snow. Mostly cloudy, with a high near 38. Chance of precipitation is 40%.

    High: 38 °F

    Chance
    Rain/Snow

Detailed Forecast

This Afternoon
A slight chance of drizzle. Cloudy, with a high near 45. North wind 9 to 13 mph.
Tonight
A slight chance of drizzle before 8pm, then a slight chance of snow between 8pm and midnight. Mostly cloudy, with a low around 25. North wind 8 to 11 mph. Chance of precipitation is 20%.
Monday
Mostly cloudy, then gradually becoming sunny, with a high near 36. North wind 5 to 7 mph becoming calm in the afternoon.
Monday Night
Partly cloudy, with a low around 26. Light and variable wind becoming southwest 8 to 13 mph after midnight. Winds could gust as high as 20 mph.
Tuesday
Mostly sunny, with a high near 49. South wind 14 to 17 mph, with gusts as high as 24 mph.
Tuesday Night
Mostly cloudy, with a low around 41.
Wednesday
Partly sunny, with a high near 51.
Wednesday Night
A slight chance of rain before midnight, then a slight chance of rain and snow. Mostly cloudy, with a low around 28. Chance of precipitation is 20%.
Thursday
A chance of rain and snow. Mostly cloudy, with a high near 38. Chance of precipitation is 40%.
Thursday Night
A slight chance of rain and snow before midnight. Mostly cloudy, with a low around 18. Chance of precipitation is 20%.
Friday
Mostly sunny, with a high near 27.
Friday Night
Partly cloudy, with a low around 8.
Saturday
Mostly sunny, with a high near 23.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Du Bois IL
 38.21°N 89.2°W (Elev. 499 ft)
Last Update:
11:06 am CST Dec 7, 2025
Forecast Valid:
1pm CST Dec 7, 2025-6pm CST Dec 13, 2025
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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