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

Hazardous Weather Conditions

Current conditions at

Southern Illinois Airport (KMDH)

Lat: 37.78°NLon: 89.25°WElev: 400ft.

Mostly Cloudy

82°F

28°C

Humidity 70%
Wind Speed N 6 mph
Barometer 30.01 in
Dewpoint 72°F (22°C)
Visibility 10.00 mi
Heat Index86°F (30°C)
Last update 6 Sep 11:52 am CDT
Extended Forecast for

Du Quoin IL

  • This Afternoon

    This Afternoon: Sunny, with a high near 93. Northeast wind 5 to 10 mph.

    High: 93 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 65. East northeast wind 5 to 10 mph.

    Low: 65 °F

    Mostly Clear

  • Labor Day

    Labor Day: Sunny, with a high near 91. East northeast wind 5 to 7 mph.

    High: 91 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 64. Light east wind.

    Low: 64 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 96. Calm wind becoming south 5 to 7 mph in the afternoon.

    High: 96 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 72. South wind 3 to 8 mph.

    Low: 72 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny and hot, with a high near 99. South southwest wind 8 to 11 mph, with gusts as high as 18 mph.

    High: 99 °F

    Hot

  • Wednesday Night

    Wednesday Night: A chance of showers and thunderstorms, mainly after 1am. Partly cloudy, with a low around 72. Southwest wind 3 to 5 mph.

    Low: 72 °F

    Slight Chance
    T-storms then
    Chance
    Showers

  • Thursday

    Thursday: A chance of showers and thunderstorms, mainly before 1pm. Partly sunny, with a high near 88. West northwest wind 3 to 7 mph.

    High: 88 °F

    Chance
    Showers

Detailed Forecast

This Afternoon
Sunny, with a high near 93. Northeast wind 5 to 10 mph.
Tonight
Mostly clear, with a low around 65. East northeast wind 5 to 10 mph.
Labor Day
Sunny, with a high near 91. East northeast wind 5 to 7 mph.
Monday Night
Mostly clear, with a low around 64. Light east wind.
Tuesday
Sunny, with a high near 96. Calm wind becoming south 5 to 7 mph in the afternoon.
Tuesday Night
Mostly clear, with a low around 72. South wind 3 to 8 mph.
Wednesday
Sunny and hot, with a high near 99. South southwest wind 8 to 11 mph, with gusts as high as 18 mph.
Wednesday Night
A chance of showers and thunderstorms, mainly after 1am. Partly cloudy, with a low around 72. Southwest wind 3 to 5 mph.
Thursday
A chance of showers and thunderstorms, mainly before 1pm. Partly sunny, with a high near 88. West northwest wind 3 to 7 mph.
Thursday Night
A slight chance of showers. Partly cloudy, with a low around 65. Light and variable wind.
Friday
A slight chance of showers. Sunny, with a high near 89. Calm wind becoming south around 5 mph.
Friday Night
A slight chance of showers. Mostly clear, with a low around 65. Calm wind.
Saturday
A slight chance of showers. Sunny, with a high near 92. Calm wind becoming south southwest 5 to 7 mph in the morning.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Du Quoin IL
 38.01°N 89.24°W
Last Update:
12:01 pm CDT Sep 6, 2026
Forecast Valid:
12pm CDT Sep 6, 2026-6pm CDT Sep 12, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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