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

79°F

26°C

Humidity 45%
Wind Speed NE 5 mph
Barometer 30.14 in (1020.4 mb)
Dewpoint 56°F (13°C)
Visibility 10.00 mi
Heat Index80°F (27°C)
Last update 23 Jun 6:52 pm CDT
Extended Forecast for

2 Miles SW Du Quoin IL

  • Tonight

    Tonight: Partly cloudy, with a low around 61. Calm wind.

    Low: 61 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 84. Calm wind becoming south around 5 mph in the afternoon.

    High: 84 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: A slight chance of showers and thunderstorms, then a chance of showers after 1am. Partly cloudy, with a low around 66. South southwest wind around 5 mph becoming calm in the evening. Chance of precipitation is 30%.

    Low: 66 °F

    Slight Chance
    T-storms then
    Chance
    Showers

  • Thursday

    Thursday: A chance of showers before 10am, then a slight chance of showers and thunderstorms between 10am and 1pm, then showers likely and possibly a thunderstorm after 1pm. Partly sunny, with a high near 86. Light south southwest wind. Chance of precipitation is 60%.

    High: 86 °F

    Chance
    Showers then
    Showers
    Likely

  • Thursday Night

    Thursday Night: Showers and possibly a thunderstorm. Low around 68. Light south southeast wind. Chance of precipitation is 90%.

    Low: 68 °F

    Showers

  • Friday

    Friday: Showers, with thunderstorms also possible after 7am. High near 84. West southwest wind 3 to 8 mph. Chance of precipitation is 90%.

    High: 84 °F

    Showers

  • Friday Night

    Friday Night: Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 71. South southwest wind around 6 mph becoming calm in the evening. Chance of precipitation is 70%.

    Low: 71 °F

    Showers
    Likely

  • Saturday

    Saturday: A chance of showers and thunderstorms. Partly sunny, with a high near 88. Calm wind becoming south southwest around 6 mph in the morning.

    High: 88 °F

    Chance
    T-storms

  • Saturday Night

    Saturday Night: A slight chance of showers and thunderstorms. Partly cloudy, with a low around 73. South wind around 5 mph.

    Low: 73 °F

    Slight Chance
    T-storms

Detailed Forecast

Tonight
Partly cloudy, with a low around 61. Calm wind.
Wednesday
Mostly sunny, with a high near 84. Calm wind becoming south around 5 mph in the afternoon.
Wednesday Night
A slight chance of showers and thunderstorms, then a chance of showers after 1am. Partly cloudy, with a low around 66. South southwest wind around 5 mph becoming calm in the evening. Chance of precipitation is 30%.
Thursday
A chance of showers before 10am, then a slight chance of showers and thunderstorms between 10am and 1pm, then showers likely and possibly a thunderstorm after 1pm. Partly sunny, with a high near 86. Light south southwest wind. Chance of precipitation is 60%.
Thursday Night
Showers and possibly a thunderstorm. Low around 68. Light south southeast wind. Chance of precipitation is 90%.
Friday
Showers, with thunderstorms also possible after 7am. High near 84. West southwest wind 3 to 8 mph. Chance of precipitation is 90%.
Friday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 71. South southwest wind around 6 mph becoming calm in the evening. Chance of precipitation is 70%.
Saturday
A chance of showers and thunderstorms. Partly sunny, with a high near 88. Calm wind becoming south southwest around 6 mph in the morning.
Saturday Night
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 73. South wind around 5 mph.
Sunday
Sunny, with a high near 94. South southwest wind 6 to 13 mph, with gusts as high as 20 mph.
Sunday Night
Mostly clear, with a low around 74. South wind 6 to 10 mph.
Monday
Sunny, with a high near 96. South southwest wind 6 to 11 mph.
Monday Night
Mostly clear, with a low around 75. South wind 5 to 9 mph becoming light south southwest after midnight.
Tuesday
Sunny and hot, with a high near 98. South southwest wind 3 to 7 mph.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles SW Du Quoin IL
 37.99°N 89.27°W
Last Update:
6:15 pm CDT Jun 23, 2026
Forecast Valid:
7pm CDT Jun 23, 2026-6pm CDT Jun 30, 2026
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation