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Hazardous Weather Conditions

Current conditions at

Mount Vernon Airport (KMVN)

Lat: 38.33°NLon: 88.85°WElev: 466ft.

Fair

92°F

33°C

Humidity 52%
Wind Speed S 12 mph
Barometer 29.96 in (1014.2 mb)
Dewpoint 72°F (22°C)
Visibility 10.00 mi
Heat Index100°F (38°C)
Last update 26 Jun 6:56 pm CDT
Extended Forecast for

Du Bois IL

Heat Advisory June 26, 07:38pm until June 26, 09:00pm
Click here for hazard details and duration
...
  •  
    Heat Advisory June 26, 07:38pm until June 26, 09:00pm

    NOW until 9:00pm Thu

    Heat Advisory

  • Tonight

    Low: 74 °F

    Partly Cloudy

  • Friday

    Friday: A 40 percent chance of showers and thunderstorms, mainly after 3pm. Increasing clouds, with a high near 93. Heat index values as high as 100. Southwest wind 8 to 13 mph, with gusts as high as 20 mph.

    High: 93 °F

    Mostly Sunny
    then Chance
    T-storms

  • Friday Night

    Friday Night: A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 72. Southwest wind 3 to 6 mph.

    Low: 72 °F

    Chance
    T-storms

  • Saturday

    Saturday: A chance of showers and thunderstorms before 1pm, then showers likely and possibly a thunderstorm between 1pm and 4pm, then showers and thunderstorms likely after 4pm. Partly sunny, with a high near 89. Southwest wind 3 to 6 mph. Chance of precipitation is 60%.

    High: 89 °F

    T-storms
    Likely

  • Saturday Night

    Saturday Night: Showers and thunderstorms likely before 10pm, then a slight chance of showers. Mostly cloudy, with a low around 73. Light southwest wind. Chance of precipitation is 60%.

    Low: 73 °F

    T-storms
    Likely then
    Slight Chance
    Showers

  • Sunday

    Sunday: A 50 percent chance of showers and thunderstorms. Mostly sunny, with a high near 91.

    High: 91 °F

    Chance
    Showers then
    Chance
    T-storms

  • Sunday Night

    Sunday Night: A 50 percent chance of showers and thunderstorms, mainly after 1am. Mostly cloudy, with a low around 73.

    Low: 73 °F

    Slight Chance
    T-storms then
    Chance
    T-storms

  • Monday

    Monday: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm. Partly sunny, with a high near 89. Chance of precipitation is 70%.

    High: 89 °F

    Chance
    T-storms then
    Showers
    Likely

Detailed Forecast

Tonight
Partly cloudy, with a low around 74. South wind around 6 mph.
Friday
A 40 percent chance of showers and thunderstorms, mainly after 3pm. Increasing clouds, with a high near 93. Heat index values as high as 100. Southwest wind 8 to 13 mph, with gusts as high as 20 mph.
Friday Night
A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 72. Southwest wind 3 to 6 mph.
Saturday
A chance of showers and thunderstorms before 1pm, then showers likely and possibly a thunderstorm between 1pm and 4pm, then showers and thunderstorms likely after 4pm. Partly sunny, with a high near 89. Southwest wind 3 to 6 mph. Chance of precipitation is 60%.
Saturday Night
Showers and thunderstorms likely before 10pm, then a slight chance of showers. Mostly cloudy, with a low around 73. Light southwest wind. Chance of precipitation is 60%.
Sunday
A 50 percent chance of showers and thunderstorms. Mostly sunny, with a high near 91.
Sunday Night
A 50 percent chance of showers and thunderstorms, mainly after 1am. Mostly cloudy, with a low around 73.
Monday
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm. Partly sunny, with a high near 89. Chance of precipitation is 70%.
Monday Night
A chance of showers and thunderstorms before 1am, then a slight chance of showers. Mostly cloudy, with a low around 71. Chance of precipitation is 30%.
Tuesday
A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 88.
Tuesday Night
Partly cloudy, with a low around 67.
Wednesday
Mostly sunny, with a high near 87.
Wednesday Night
Mostly clear, with a low around 67.
Thursday
A 20 percent chance of showers and thunderstorms. Sunny, with a high near 89.
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ABOUT THIS FORECAST

 
Point Forecast:
Du Bois IL
 38.21°N 89.2°W (Elev. 499 ft)
Last Update:
6:07 pm CDT Jun 26, 2025
Forecast Valid:
7pm CDT Jun 26, 2025-6pm CDT Jul 3, 2025
 
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