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.

Mostly Cloudy

64°F

18°C

Humidity 68%
Wind Speed S 17 G 28 mph
Barometer 30.10 in (1019.0 mb)
Dewpoint 53°F (12°C)
Visibility 10.00 mi
Last update 30 Mar 4:52 am CDT
Extended Forecast for

Du Quoin IL

  • Today

    Today: Mostly sunny, with a high near 79. Breezy, with a south southwest wind 13 to 21 mph, with gusts as high as 34 mph.

    High: 79 °F

    Mostly Sunny
    and Breezy

  • Tonight

    Tonight: Mostly clear, with a low around 64. South southwest wind 14 to 16 mph, with gusts as high as 28 mph.

    Low: 64 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 82. Breezy, with a south southwest wind 14 to 23 mph, with gusts as high as 34 mph.

    High: 82 °F

    Mostly Sunny
    and Breezy

  • Tuesday Night

    Tuesday Night: A 40 percent chance of showers, mainly after 1am. Mostly cloudy, with a low around 62. South southwest wind 9 to 15 mph, with gusts as high as 26 mph.

    Low: 62 °F

    Chance
    Showers

  • Wednesday

    Wednesday: Showers likely and possibly a thunderstorm before 10am, then showers likely between 10am and 1pm, then showers likely and possibly a thunderstorm after 1pm. Partly sunny, with a high near 80. South wind 8 to 11 mph, with gusts as high as 18 mph. Chance of precipitation is 70%.

    High: 80 °F

    Showers
    Likely

  • Wednesday Night

    Wednesday Night: A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 65. South wind 10 to 14 mph, with gusts as high as 23 mph.

    Low: 65 °F

    Chance
    Showers

  • Thursday

    Thursday: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm. Mostly cloudy, with a high near 77. South wind 14 to 18 mph, with gusts as high as 26 mph. Chance of precipitation is 70%.

    High: 77 °F

    Chance
    T-storms then
    Showers
    Likely

  • Thursday Night

    Thursday Night: Showers and possibly a thunderstorm. Mostly cloudy, with a low around 62. South wind 14 to 18 mph, with gusts as high as 25 mph.

    Low: 62 °F

    Showers

  • Friday

    Friday: Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 77. South wind 10 to 13 mph, with gusts as high as 20 mph.

    High: 77 °F

    Showers
    Likely

Detailed Forecast

Today
Mostly sunny, with a high near 79. Breezy, with a south southwest wind 13 to 21 mph, with gusts as high as 34 mph.
Tonight
Mostly clear, with a low around 64. South southwest wind 14 to 16 mph, with gusts as high as 28 mph.
Tuesday
Mostly sunny, with a high near 82. Breezy, with a south southwest wind 14 to 23 mph, with gusts as high as 34 mph.
Tuesday Night
A 40 percent chance of showers, mainly after 1am. Mostly cloudy, with a low around 62. South southwest wind 9 to 15 mph, with gusts as high as 26 mph.
Wednesday
Showers likely and possibly a thunderstorm before 10am, then showers likely between 10am and 1pm, then showers likely and possibly a thunderstorm after 1pm. Partly sunny, with a high near 80. South wind 8 to 11 mph, with gusts as high as 18 mph. Chance of precipitation is 70%.
Wednesday Night
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 65. South wind 10 to 14 mph, with gusts as high as 23 mph.
Thursday
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm. Mostly cloudy, with a high near 77. South wind 14 to 18 mph, with gusts as high as 26 mph. Chance of precipitation is 70%.
Thursday Night
Showers and possibly a thunderstorm. Mostly cloudy, with a low around 62. South wind 14 to 18 mph, with gusts as high as 25 mph.
Friday
Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 77. South wind 10 to 13 mph, with gusts as high as 20 mph.
Friday Night
Showers likely, mainly after 1am. Mostly cloudy, with a low around 60. South southeast wind 10 to 13 mph, with gusts as high as 21 mph.
Saturday
Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 71. South wind 13 to 16 mph becoming west in the afternoon. Winds could gust as high as 24 mph.
Saturday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 42. West northwest wind around 14 mph, with gusts as high as 21 mph.
Sunday
A chance of showers. Mostly sunny, with a high near 59. Northwest wind 13 to 15 mph, with gusts as high as 21 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:
1:26 am CDT Mar 30, 2026
Forecast Valid:
5am CDT Mar 30, 2026-6pm CDT Apr 5, 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