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

63°F

17°C

Humidity 40%
Wind Speed Calm
Barometer 29.98 in (1015.3 mb)
Dewpoint 38°F (3°C)
Visibility 10.00 mi
Last update 30 Apr 6:52 pm CDT
Extended Forecast for

Du Quoin IL

  • Tonight

    Tonight: A slight chance of showers between midnight and 1am. Mostly cloudy, with a low around 47. Calm wind becoming northwest around 6 mph after midnight. Chance of precipitation is 20%.

    Low: 47 °F

    Mostly Cloudy
    then Slight
    Chance
    Showers

  • Friday

    Friday: Sunny, with a high near 63. North wind 6 to 9 mph.

    High: 63 °F

    Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 43. North wind around 6 mph becoming calm in the evening.

    Low: 43 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 61. Light and variable wind becoming north northwest 5 to 8 mph in the morning.

    High: 61 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 40. North northwest wind around 6 mph becoming calm in the evening.

    Low: 40 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 70. Light southwest wind becoming south southwest 6 to 11 mph in the morning.

    High: 70 °F

    Sunny

  • Sunday Night

    Sunday Night: A 20 percent chance of showers after 1am. Mostly clear, with a low around 54. South southwest wind 11 to 14 mph, with gusts as high as 23 mph.

    Low: 54 °F

    Mostly Clear
    then Slight
    Chance
    Showers

  • Monday

    Monday: A slight chance of showers, with thunderstorms also possible after 1pm. Mostly sunny, with a high near 79. Breezy, with a south southwest wind 11 to 20 mph, with gusts as high as 28 mph.

    High: 79 °F

    Slight Chance
    Showers then
    Slight Chance
    T-storms and
    Breezy

  • Monday Night

    Monday Night: A slight chance of showers and thunderstorms, then a chance of showers after 1am. Partly cloudy, with a low around 58. South southwest wind 14 to 16 mph, with gusts as high as 23 mph.

    Low: 58 °F

    Slight Chance
    T-storms then
    Chance
    Showers

Detailed Forecast

Tonight
A slight chance of showers between midnight and 1am. Mostly cloudy, with a low around 47. Calm wind becoming northwest around 6 mph after midnight. Chance of precipitation is 20%.
Friday
Sunny, with a high near 63. North wind 6 to 9 mph.
Friday Night
Partly cloudy, with a low around 43. North wind around 6 mph becoming calm in the evening.
Saturday
Mostly sunny, with a high near 61. Light and variable wind becoming north northwest 5 to 8 mph in the morning.
Saturday Night
Mostly clear, with a low around 40. North northwest wind around 6 mph becoming calm in the evening.
Sunday
Sunny, with a high near 70. Light southwest wind becoming south southwest 6 to 11 mph in the morning.
Sunday Night
A 20 percent chance of showers after 1am. Mostly clear, with a low around 54. South southwest wind 11 to 14 mph, with gusts as high as 23 mph.
Monday
A slight chance of showers, with thunderstorms also possible after 1pm. Mostly sunny, with a high near 79. Breezy, with a south southwest wind 11 to 20 mph, with gusts as high as 28 mph.
Monday Night
A slight chance of showers and thunderstorms, then a chance of showers after 1am. Partly cloudy, with a low around 58. South southwest wind 14 to 16 mph, with gusts as high as 23 mph.
Tuesday
A chance of showers and thunderstorms. Partly sunny, with a high near 73. South southwest wind 15 to 18 mph, with gusts as high as 28 mph.
Tuesday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 52. Breezy, with a south southwest wind 13 to 22 mph becoming north after midnight. Winds could gust as high as 29 mph.
Wednesday
A chance of showers and thunderstorms. Partly sunny, with a high near 68. Northwest wind 10 to 13 mph, with gusts as high as 20 mph.
Wednesday Night
A slight chance of showers. Partly cloudy, with a low around 46. North northwest wind 8 to 11 mph.
Thursday
Sunny, with a high near 67. West northwest wind 8 to 14 mph, with gusts as high as 21 mph.
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ABOUT THIS FORECAST

 
Point Forecast:
Du Quoin IL
 38.01°N 89.24°W
Last Update:
6:01 pm CDT Apr 30, 2026
Forecast Valid:
7pm CDT Apr 30, 2026-6pm CDT May 7, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

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Chance of Precipitation