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.

N/A

Humidity NA
Wind Speed NA
Barometer NA
Dewpoint N/A
Visibility NA
Last update *** Not a current observation ***
Extended Forecast for

Du Quoin IL

  • Today

    Today: Mostly cloudy, with a high near 57. North northwest wind around 5 mph becoming calm in the afternoon.

    High: 57 °F

    Mostly Cloudy

  • Tonight

    Tonight: A 40 percent chance of showers after midnight. Mostly cloudy, with a low around 36. East northeast wind 3 to 6 mph.

    Low: 36 °F

    Mostly Cloudy
    then Chance
    Showers

  • Thursday

    Thursday: A 20 percent chance of showers before noon. Mostly sunny, with a high near 53. East northeast wind 3 to 7 mph.

    High: 53 °F

    Slight Chance
    Showers then
    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 33. Calm wind.

    Low: 33 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 65. Calm wind becoming south southwest 5 to 9 mph in the morning.

    High: 65 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 43. South southwest wind 6 to 8 mph.

    Low: 43 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 66. South southwest wind 6 to 9 mph becoming east southeast in the afternoon.

    High: 66 °F

    Sunny

  • Saturday Night

    Saturday Night: A slight chance of showers after midnight. Partly cloudy, with a low around 35. East wind around 10 mph becoming north northeast in the evening. Winds could gust as high as 20 mph.

    Low: 35 °F

    Partly Cloudy
    then Slight
    Chance
    Showers

  • Sunday

    Sunday: A chance of showers, mainly after noon. Mostly cloudy, with a high near 51. East northeast wind around 11 mph, with gusts as high as 18 mph.

    High: 51 °F

    Chance
    Showers

Detailed Forecast

Today
Mostly cloudy, with a high near 57. North northwest wind around 5 mph becoming calm in the afternoon.
Tonight
A 40 percent chance of showers after midnight. Mostly cloudy, with a low around 36. East northeast wind 3 to 6 mph.
Thursday
A 20 percent chance of showers before noon. Mostly sunny, with a high near 53. East northeast wind 3 to 7 mph.
Thursday Night
Mostly clear, with a low around 33. Calm wind.
Friday
Sunny, with a high near 65. Calm wind becoming south southwest 5 to 9 mph in the morning.
Friday Night
Mostly clear, with a low around 43. South southwest wind 6 to 8 mph.
Saturday
Sunny, with a high near 66. South southwest wind 6 to 9 mph becoming east southeast in the afternoon.
Saturday Night
A slight chance of showers after midnight. Partly cloudy, with a low around 35. East wind around 10 mph becoming north northeast in the evening. Winds could gust as high as 20 mph.
Sunday
A chance of showers, mainly after noon. Mostly cloudy, with a high near 51. East northeast wind around 11 mph, with gusts as high as 18 mph.
Sunday Night
A chance of showers. Mostly cloudy, with a low around 36. East northeast wind around 10 mph, with gusts as high as 18 mph.
Monday
A chance of showers. Mostly cloudy, with a high near 47. Northeast wind 9 to 11 mph, with gusts as high as 18 mph.
Monday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 32. Northeast wind around 8 mph.
Tuesday
A chance of showers. Mostly cloudy, with a high near 50. Northeast wind around 8 mph becoming northwest in the afternoon.
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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:
4:12 am CST Feb 25, 2026
Forecast Valid:
5am CST Feb 25, 2026-6pm CST Mar 3, 2026
 
Forecast Discussion
 
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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