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.

Fog/Mist

60°F

16°C

Humidity 100%
Wind Speed Calm
Barometer 30.11 in (1019.3 mb)
Dewpoint 60°F (16°C)
Visibility 5.00 mi
Last update 1 Oct 7:52 am CDT
Extended Forecast for

Du Quoin IL

  • Today

    Today: Mostly sunny, with a high near 89. Calm wind becoming east 5 to 7 mph in the afternoon.

    High: 89 °F

    Mostly Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 62. East wind around 5 mph becoming calm in the evening.

    Low: 62 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 89. Calm wind becoming south southeast around 6 mph in the afternoon.

    High: 89 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 64. Light south southeast wind.

    Low: 64 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 88. Calm wind becoming south southwest around 6 mph in the morning.

    High: 88 °F

    Sunny

  • Friday Night

    Friday Night: Clear, with a low around 59. South wind around 5 mph becoming calm in the evening.

    Low: 59 °F

    Clear

  • Saturday

    Saturday: Sunny, with a high near 86. Calm wind becoming south 5 to 9 mph in the morning.

    High: 86 °F

    Sunny

  • Saturday Night

    Saturday Night: Clear, with a low around 59. South southeast wind around 6 mph.

    Low: 59 °F

    Clear

  • Sunday

    Sunday: Sunny, with a high near 86. South wind 6 to 10 mph.

    High: 86 °F

    Sunny

Detailed Forecast

Today
Mostly sunny, with a high near 89. Calm wind becoming east 5 to 7 mph in the afternoon.
Tonight
Partly cloudy, with a low around 62. East wind around 5 mph becoming calm in the evening.
Thursday
Mostly sunny, with a high near 89. Calm wind becoming south southeast around 6 mph in the afternoon.
Thursday Night
Mostly clear, with a low around 64. Light south southeast wind.
Friday
Sunny, with a high near 88. Calm wind becoming south southwest around 6 mph in the morning.
Friday Night
Clear, with a low around 59. South wind around 5 mph becoming calm in the evening.
Saturday
Sunny, with a high near 86. Calm wind becoming south 5 to 9 mph in the morning.
Saturday Night
Clear, with a low around 59. South southeast wind around 6 mph.
Sunday
Sunny, with a high near 86. South wind 6 to 10 mph.
Sunday Night
Mostly clear, with a low around 63. South southeast wind 3 to 6 mph.
Monday
Mostly sunny, with a high near 85. South southeast wind 3 to 7 mph.
Monday Night
Partly cloudy, with a low around 63. South southeast wind around 5 mph becoming calm in the evening.
Tuesday
A slight chance of showers. Mostly sunny, with a high near 84. Southwest wind 3 to 8 mph.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Du Quoin IL
 38.01°N 89.24°W
Last Update:
7:15 am CDT Oct 1, 2025
Forecast Valid:
8am CDT Oct 1, 2025-6pm CDT Oct 7, 2025
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation