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

37°F

3°C

Humidity 96%
Wind Speed S 3 mph
Barometer 30.01 in (1016.5 mb)
Dewpoint 36°F (2°C)
Visibility 8.00 mi
Last update 9 Feb 11:52 pm CST
Extended Forecast for

Du Quoin IL

  • Overnight

    Overnight: Mostly clear, with a low around 35. South wind 5 to 8 mph.

    Low: 35 °F

    Mostly Clear

  • Tuesday

    Tuesday: Increasing clouds, with a high near 66. South southwest wind 8 to 11 mph becoming north in the afternoon. Winds could gust as high as 21 mph.

    High: 66 °F

    Increasing
    Clouds

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 30. North wind 6 to 10 mph, with gusts as high as 18 mph.

    Low: 30 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Sunny, with a high near 49. North wind 3 to 6 mph.

    High: 49 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 30. Calm wind.

    Low: 30 °F

    Mostly Cloudy

  • Thursday

    Thursday: Mostly cloudy, with a high near 47. Calm wind becoming east southeast around 6 mph in the morning.

    High: 47 °F

    Mostly Cloudy

  • Thursday Night

    Thursday Night: A 20 percent chance of showers. Mostly cloudy, with a low around 32. East wind 3 to 5 mph.

    Low: 32 °F

    Slight Chance
    Showers

  • Friday

    Friday: Partly sunny, with a high near 48. East wind 5 to 7 mph.

    High: 48 °F

    Partly Sunny

  • Friday Night

    Friday Night: A chance of showers, mainly after midnight. Mostly cloudy, with a low around 36. East wind 5 to 7 mph.

    Low: 36 °F

    Chance
    Showers

Detailed Forecast

Overnight
Mostly clear, with a low around 35. South wind 5 to 8 mph.
Tuesday
Increasing clouds, with a high near 66. South southwest wind 8 to 11 mph becoming north in the afternoon. Winds could gust as high as 21 mph.
Tuesday Night
Mostly cloudy, with a low around 30. North wind 6 to 10 mph, with gusts as high as 18 mph.
Wednesday
Sunny, with a high near 49. North wind 3 to 6 mph.
Wednesday Night
Mostly cloudy, with a low around 30. Calm wind.
Thursday
Mostly cloudy, with a high near 47. Calm wind becoming east southeast around 6 mph in the morning.
Thursday Night
A 20 percent chance of showers. Mostly cloudy, with a low around 32. East wind 3 to 5 mph.
Friday
Partly sunny, with a high near 48. East wind 5 to 7 mph.
Friday Night
A chance of showers, mainly after midnight. Mostly cloudy, with a low around 36. East wind 5 to 7 mph.
Saturday
Showers likely, mainly after noon. Cloudy, with a high near 49. East wind 7 to 11 mph, with gusts as high as 18 mph.
Saturday Night
Showers. Cloudy, with a low around 40. East wind around 11 mph, with gusts as high as 20 mph.
Sunday
A chance of showers. Partly sunny, with a high near 52. North northwest wind 9 to 14 mph, with gusts as high as 21 mph.
Sunday Night
Mostly clear, with a low around 35. Northwest wind 5 to 8 mph.
Washington's Birthday
Sunny, with a high near 58. West southwest wind 5 to 9 mph becoming south in the afternoon.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Du Quoin IL
 38.01°N 89.24°W
Last Update:
11:07 pm CST Feb 9, 2026
Forecast Valid:
12am CST Feb 10, 2026-6pm CST Feb 16, 2026
 
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Additional Resources

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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