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

56°F

13°C

Humidity 97%
Wind Speed Calm
Barometer 30.01 in (1016.3 mb)
Dewpoint 55°F (13°C)
Visibility 10.00 mi
Last update 12 Oct 5:56 am CDT
Extended Forecast for

Du Bois IL

  • Columbus Day

    Columbus Day: Sunny, with a high near 92. Southwest wind 5 to 15 mph.

    High: 92 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 66. Southwest wind around 8 mph.

    Low: 66 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 94. Southwest wind 6 to 11 mph.

    High: 94 °F

    Sunny

  • Tuesday Night

    Tuesday Night: A chance of showers between 1am and 4am, then a chance of showers and thunderstorms after 4am. Mostly clear, with a low around 70. South wind around 7 mph. Chance of precipitation is 30%.

    Low: 70 °F

    Clear then
    Chance
    Showers

  • Wednesday

    Wednesday: Showers and possibly a thunderstorm. High near 85. Southwest wind around 6 mph. Chance of precipitation is 90%.

    High: 85 °F

    Showers

  • Wednesday Night

    Wednesday Night: Showers likely and possibly a thunderstorm before 10pm, then showers likely between 10pm and 1am, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 65. Chance of precipitation is 70%.

    Low: 65 °F

    Showers
    Likely

  • Thursday

    Thursday: Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 83. Chance of precipitation is 70%.

    High: 83 °F

    Showers
    Likely

  • Thursday Night

    Thursday Night: A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 53.

    Low: 53 °F

    Chance
    Showers then
    Chance
    T-storms

  • Friday

    Friday: Mostly sunny, with a high near 65. Breezy.

    High: 65 °F

    Mostly Sunny
    and Breezy

Detailed Forecast

Columbus Day
Sunny, with a high near 92. Southwest wind 5 to 15 mph.
Tonight
Mostly clear, with a low around 66. Southwest wind around 8 mph.
Tuesday
Sunny, with a high near 94. Southwest wind 6 to 11 mph.
Tuesday Night
A chance of showers between 1am and 4am, then a chance of showers and thunderstorms after 4am. Mostly clear, with a low around 70. South wind around 7 mph. Chance of precipitation is 30%.
Wednesday
Showers and possibly a thunderstorm. High near 85. Southwest wind around 6 mph. Chance of precipitation is 90%.
Wednesday Night
Showers likely and possibly a thunderstorm before 10pm, then showers likely between 10pm and 1am, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 65. Chance of precipitation is 70%.
Thursday
Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 83. Chance of precipitation is 70%.
Thursday Night
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 53.
Friday
Mostly sunny, with a high near 65. Breezy.
Friday Night
Mostly clear, with a low around 39.
Saturday
Sunny, with a high near 62.
Saturday Night
Clear, with a low around 36.
Sunday
Sunny, with a high near 70.
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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:
6:21 am CDT Oct 12, 2026
Forecast Valid:
8am CDT Oct 12, 2026-6pm CDT Oct 18, 2026
 
Forecast Discussion
 
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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