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

75°F

24°C

Humidity 52%
Wind Speed Vrbl 5 mph
Barometer 30.04 in (1017.1 mb)
Dewpoint 56°F (13°C)
Visibility 10.00 mi
Last update 11 Oct 11:52 am CDT
Extended Forecast for

Du Quoin IL

  • This Afternoon

    This Afternoon: Sunny, with a high near 86. West northwest wind around 5 mph.

    High: 86 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 60. Light south wind.

    Low: 60 °F

    Mostly Clear

  • Columbus Day

    Columbus Day: Partly sunny, then gradually becoming sunny, with a high near 92. Southwest wind 5 to 14 mph, with gusts as high as 18 mph.

    High: 92 °F

    Becoming
    Sunny

  • Monday Night

    Monday Night: Clear, with a low around 67. Southwest wind around 8 mph.

    Low: 67 °F

    Clear

  • Tuesday

    Tuesday: Sunny, with a high near 93. Southwest wind 7 to 11 mph.

    High: 93 °F

    Sunny

  • Tuesday Night

    Tuesday Night: A 30 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 69. South southwest wind around 6 mph.

    Low: 69 °F

    Mostly Clear
    then Chance
    T-storms

  • Wednesday

    Wednesday: Showers likely and possibly a thunderstorm. Partly sunny, with a high near 86. West wind 3 to 8 mph. Chance of precipitation is 60%.

    High: 86 °F

    Showers
    Likely

  • Wednesday Night

    Wednesday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 64. Northeast wind 3 to 6 mph.

    Low: 64 °F

    Chance
    Showers

  • Thursday

    Thursday: A chance of showers, then showers likely and possibly a thunderstorm after 1pm. Mostly cloudy, with a high near 82. East wind 8 to 11 mph becoming south southwest in the afternoon.

    High: 82 °F

    Showers
    Likely

Detailed Forecast

This Afternoon
Sunny, with a high near 86. West northwest wind around 5 mph.
Tonight
Mostly clear, with a low around 60. Light south wind.
Columbus Day
Partly sunny, then gradually becoming sunny, with a high near 92. Southwest wind 5 to 14 mph, with gusts as high as 18 mph.
Monday Night
Clear, with a low around 67. Southwest wind around 8 mph.
Tuesday
Sunny, with a high near 93. Southwest wind 7 to 11 mph.
Tuesday Night
A 30 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 69. South southwest wind around 6 mph.
Wednesday
Showers likely and possibly a thunderstorm. Partly sunny, with a high near 86. West wind 3 to 8 mph. Chance of precipitation is 60%.
Wednesday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 64. Northeast wind 3 to 6 mph.
Thursday
A chance of showers, then showers likely and possibly a thunderstorm after 1pm. Mostly cloudy, with a high near 82. East wind 8 to 11 mph becoming south southwest in the afternoon.
Thursday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 55. South southwest wind 7 to 9 mph becoming west northwest after midnight.
Friday
A slight chance of showers. Partly sunny, with a high near 70. Breezy, with a northwest wind 15 to 21 mph.
Friday Night
Partly cloudy, with a low around 42. North northwest wind 9 to 17 mph.
Saturday
Mostly sunny, with a high near 62. North wind 11 to 15 mph, with gusts as high as 20 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:
9:21 am CDT Oct 11, 2026
Forecast Valid:
12pm CDT Oct 11, 2026-6pm CDT Oct 17, 2026
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation