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

43°F

6°C

Humidity 86%
Wind Speed Calm
Barometer 30.30 in (1026.2 mb)
Dewpoint 39°F (4°C)
Visibility 10.00 mi
Last update 7 Apr 1:52 am CDT
Extended Forecast for

Du Quoin IL

  • Overnight

    Overnight: Mostly cloudy, with a low around 39. North northeast wind 5 to 7 mph.

    Low: 39 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 57. East northeast wind around 10 mph.

    High: 57 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 39. East wind 6 to 8 mph.

    Low: 39 °F

    Mostly Clear

  • Wednesday

    Wednesday: Mostly sunny, with a high near 72. Southeast wind 6 to 11 mph, with gusts as high as 18 mph.

    High: 72 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 52. South wind around 9 mph.

    Low: 52 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 76. South southwest wind 9 to 11 mph, with gusts as high as 18 mph.

    High: 76 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 54. South wind around 7 mph.

    Low: 54 °F

    Mostly Clear

  • Friday

    Friday: A chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 77. South southwest wind 7 to 10 mph.

    High: 77 °F

    Mostly Sunny
    then Chance
    Showers

  • Friday Night

    Friday Night: A chance of showers and thunderstorms, mainly after 1am. Mostly cloudy, with a low around 57. Northwest wind around 5 mph becoming light and variable in the evening.

    Low: 57 °F

    Slight Chance
    T-storms then
    Chance
    Showers

Detailed Forecast

Overnight
Mostly cloudy, with a low around 39. North northeast wind 5 to 7 mph.
Tuesday
Mostly sunny, with a high near 57. East northeast wind around 10 mph.
Tuesday Night
Mostly clear, with a low around 39. East wind 6 to 8 mph.
Wednesday
Mostly sunny, with a high near 72. Southeast wind 6 to 11 mph, with gusts as high as 18 mph.
Wednesday Night
Mostly clear, with a low around 52. South wind around 9 mph.
Thursday
Sunny, with a high near 76. South southwest wind 9 to 11 mph, with gusts as high as 18 mph.
Thursday Night
Mostly clear, with a low around 54. South wind around 7 mph.
Friday
A chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 77. South southwest wind 7 to 10 mph.
Friday Night
A chance of showers and thunderstorms, mainly after 1am. Mostly cloudy, with a low around 57. Northwest wind around 5 mph becoming light and variable in the evening.
Saturday
A slight chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 78. East wind 5 to 7 mph becoming south southeast in the afternoon.
Saturday Night
Partly cloudy, with a low around 59. East southeast wind around 6 mph.
Sunday
Mostly sunny, with a high near 82. South wind 7 to 16 mph, with gusts as high as 24 mph.
Sunday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 65. South wind 11 to 14 mph, with gusts as high as 24 mph.
Monday
A chance of showers and thunderstorms. Partly sunny, with a high near 82. South southwest wind 15 to 18 mph, with gusts as high as 26 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:
2:31 am CDT Apr 7, 2026
Forecast Valid:
2am CDT Apr 7, 2026-6pm CDT Apr 13, 2026
 
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Additional Resources

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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