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

58°F

14°C

Humidity 84%
Wind Speed Calm
Barometer 30.17 in (1021.2 mb)
Dewpoint 53°F (12°C)
Visibility 10.00 mi
Last update 31 Aug 11:52 pm CDT
Extended Forecast for

Du Quoin IL

  • Overnight

    Overnight: Partly cloudy, with a low around 57. Calm wind.

    Low: 57 °F

    Partly Cloudy

  • Labor Day

    Labor Day: Mostly sunny, with a high near 85. Calm wind becoming east northeast around 6 mph in the morning.

    High: 85 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 62. Northeast wind around 6 mph becoming calm in the evening.

    Low: 62 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: A slight chance of showers between 1pm and 4pm, then a slight chance of showers and thunderstorms after 4pm. Partly sunny, with a high near 83. Calm wind becoming east northeast around 6 mph in the afternoon. Chance of precipitation is 20%.

    High: 83 °F

    Partly Sunny
    then Slight
    Chance
    T-storms

  • Tuesday Night

    Tuesday Night: A slight chance of showers and thunderstorms before 7pm, then a slight chance of showers between 7pm and 1am. Partly cloudy, with a low around 59. Light and variable wind. Chance of precipitation is 20%.

    Low: 59 °F

    Slight Chance
    T-storms then
    Slight Chance
    Showers

  • Wednesday

    Wednesday: Sunny, with a high near 86. Calm wind becoming west 5 to 7 mph in the afternoon.

    High: 86 °F

    Sunny

  • Wednesday Night

    Wednesday Night: A slight chance of showers, then a chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 56. West wind around 7 mph. Chance of precipitation is 40%.

    Low: 56 °F

    Chance
    Showers

  • Thursday

    Thursday: Mostly sunny, with a high near 77. Northwest wind 7 to 10 mph.

    High: 77 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 52. Northwest wind around 6 mph becoming calm in the evening.

    Low: 52 °F

    Mostly Clear

Detailed Forecast

Overnight
Partly cloudy, with a low around 57. Calm wind.
Labor Day
Mostly sunny, with a high near 85. Calm wind becoming east northeast around 6 mph in the morning.
Monday Night
Mostly cloudy, with a low around 62. Northeast wind around 6 mph becoming calm in the evening.
Tuesday
A slight chance of showers between 1pm and 4pm, then a slight chance of showers and thunderstorms after 4pm. Partly sunny, with a high near 83. Calm wind becoming east northeast around 6 mph in the afternoon. Chance of precipitation is 20%.
Tuesday Night
A slight chance of showers and thunderstorms before 7pm, then a slight chance of showers between 7pm and 1am. Partly cloudy, with a low around 59. Light and variable wind. Chance of precipitation is 20%.
Wednesday
Sunny, with a high near 86. Calm wind becoming west 5 to 7 mph in the afternoon.
Wednesday Night
A slight chance of showers, then a chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 56. West wind around 7 mph. Chance of precipitation is 40%.
Thursday
Mostly sunny, with a high near 77. Northwest wind 7 to 10 mph.
Thursday Night
Mostly clear, with a low around 52. Northwest wind around 6 mph becoming calm in the evening.
Friday
Sunny, with a high near 84. Light south southwest wind becoming west southwest 6 to 11 mph in the morning.
Friday Night
Mostly clear, with a low around 53. West northwest wind 5 to 7 mph.
Saturday
Sunny, with a high near 82. Light northwest wind increasing to 5 to 9 mph in the morning.
Saturday Night
Mostly clear, with a low around 52. North northwest wind around 6 mph becoming calm in the evening.
Sunday
Sunny, with a high near 82. Calm wind becoming north northeast 5 to 7 mph in the morning.
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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:
11:16 pm CDT Aug 31, 2025
Forecast Valid:
1am CDT Sep 1, 2025-6pm CDT Sep 7, 2025
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation