National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

Southern Illinois Airport (KMDH)

Lat: 37.78°NLon: 89.25°WElev: 400ft.

Fair

51°F

11°C

Humidity 96%
Wind Speed S 3 mph
Barometer 30.02 in (1016.4 mb)
Dewpoint 50°F (10°C)
Visibility 10.00 mi
Last update 6 Oct 10:52 pm CDT
Extended Forecast for

Du Quoin IL

  • Tonight

    Tonight: Mostly clear, with a low around 52. Calm wind.

    Low: 52 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 88. Calm wind becoming west southwest 5 to 9 mph in the morning.

    High: 88 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 57. Southwest wind around 5 mph becoming calm in the evening.

    Low: 57 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 85. Calm wind becoming north northeast 5 to 7 mph in the morning.

    High: 85 °F

    Sunny

  • Thursday Night

    Thursday Night: Clear, with a low around 53. Light northeast wind.

    Low: 53 °F

    Clear

  • Friday

    Friday: Sunny, with a high near 84. Light and variable wind becoming southeast 5 to 8 mph in the morning.

    High: 84 °F

    Sunny

  • Friday Night

    Friday Night: Clear, with a low around 56. Southeast wind around 5 mph becoming calm in the evening.

    Low: 56 °F

    Clear

  • Saturday

    Saturday: Sunny, with a high near 87. Light south southeast wind becoming south 6 to 11 mph in the morning.

    High: 87 °F

    Sunny

  • Saturday Night

    Saturday Night: A chance of showers, with thunderstorms also possible after 1am. Partly cloudy, with a low around 58. Southeast wind 5 to 7 mph.

    Low: 58 °F

    Chance
    Showers

Detailed Forecast

Tonight
Mostly clear, with a low around 52. Calm wind.
Wednesday
Sunny, with a high near 88. Calm wind becoming west southwest 5 to 9 mph in the morning.
Wednesday Night
Mostly clear, with a low around 57. Southwest wind around 5 mph becoming calm in the evening.
Thursday
Sunny, with a high near 85. Calm wind becoming north northeast 5 to 7 mph in the morning.
Thursday Night
Clear, with a low around 53. Light northeast wind.
Friday
Sunny, with a high near 84. Light and variable wind becoming southeast 5 to 8 mph in the morning.
Friday Night
Clear, with a low around 56. Southeast wind around 5 mph becoming calm in the evening.
Saturday
Sunny, with a high near 87. Light south southeast wind becoming south 6 to 11 mph in the morning.
Saturday Night
A chance of showers, with thunderstorms also possible after 1am. Partly cloudy, with a low around 58. Southeast wind 5 to 7 mph.
Sunday
A chance of showers, mainly before 1pm. Partly sunny, with a high near 78. East wind 6 to 11 mph.
Sunday Night
Partly cloudy, with a low around 57. North wind around 5 mph becoming calm in the evening.
Columbus Day
Mostly sunny, with a high near 82. Calm wind becoming north northwest 5 to 9 mph in the morning.
Monday Night
Partly cloudy, with a low around 58. East wind around 6 mph becoming light and variable.
Tuesday
A slight chance of showers. Mostly sunny, with a high near 83. South southwest wind 5 to 11 mph.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Du Quoin IL
 38.01°N 89.21°W
Last Update:
7:20 pm CDT Oct 6, 2026
Forecast Valid:
11pm CDT Oct 6, 2026-6pm CDT Oct 13, 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