Current conditions at

Mount Vernon Airport (KMVN)

Lat: 38.33°NLon: 88.85°WElev: 466ft.

Fair

86°F

30°C

Humidity 59%
Wind Speed S 13 mph
Barometer 30.06 in (1017.7 mb)
Dewpoint 70°F (21°C)
Visibility 10.00 mi
Heat Index91°F (33°C)
Last update 20 Jun 11:56 am CDT
Extended Forecast for

Du Bois IL

Heat Advisory June 21, 12:00pm until June 24, 09:00pm
Click here for hazard details and duration
Heat Advisory
  • This Afternoon

    This Afternoon: Mostly sunny, with a high near 88. South wind around 10 mph.

    High: 88 °F

    Mostly Sunny

  • Tonight

    Tonight: Clear, with a low around 74. South wind 8 to 10 mph.

    Low: 74 °F

    Clear

  • Saturday

    Saturday: Sunny, with a high near 94. Heat index values as high as 104. Southwest wind 9 to 15 mph, with gusts as high as 23 mph.

    High: 94 °F

    Sunny

  • Saturday Night

    Saturday Night: Clear, with a low around 74. South wind 7 to 11 mph, with gusts as high as 21 mph.

    Low: 74 °F

    Clear

  • Sunday

    Sunday: Sunny, with a high near 95. South wind 7 to 10 mph.

    High: 95 °F

    Sunny

  • Sunday Night

    Sunday Night: Clear, with a low around 75.

    Low: 75 °F

    Clear

  • Monday

    Monday: Sunny, with a high near 94.

    High: 94 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 75.

    Low: 75 °F

    Mostly Clear

  • Tuesday

    Tuesday: A 20 percent chance of showers and thunderstorms before 1pm.  Sunny, with a high near 93.

    High: 93 °F

    Slight Chance
    T-storms

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 88. South wind around 10 mph.
Tonight
Clear, with a low around 74. South wind 8 to 10 mph.
Saturday
Sunny, with a high near 94. Heat index values as high as 104. Southwest wind 9 to 15 mph, with gusts as high as 23 mph.
Saturday Night
Clear, with a low around 74. South wind 7 to 11 mph, with gusts as high as 21 mph.
Sunday
Sunny, with a high near 95. South wind 7 to 10 mph.
Sunday Night
Clear, with a low around 75.
Monday
Sunny, with a high near 94.
Monday Night
Mostly clear, with a low around 75.
Tuesday
A 20 percent chance of showers and thunderstorms before 1pm. Sunny, with a high near 93.
Tuesday Night
Mostly clear, with a low around 75.
Wednesday
A 20 percent chance of showers and thunderstorms. Sunny, with a high near 93.
Wednesday Night
Mostly clear, with a low around 75.
Thursday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 92.
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ABOUT THIS FORECAST

 
Point Forecast:
Du Bois IL
 38.21°N 89.2°W (Elev. 499 ft)
11:37 am CDT Jun 20, 2025
12pm CDT Jun 20, 2025-6pm CDT Jun 26, 2025
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database