Current conditions at

Southern Illinois Airport (KMDH)

Lat: 37.78°NLon: 89.25°WElev: 400ft.

Fair

80°F

27°C

Humidity 74%
Wind Speed W 5 mph
Barometer 30.01 in (1015.9 mb)
Dewpoint 71°F (22°C)
Visibility 10.00 mi
Heat Index83°F (28°C)
Last update 25 Jun 9:52 am CDT
Extended Forecast for

Carbondale IL

Flood Watch June 25, 04:00pm until June 27, 07:00am
Click here for hazard details and duration
Flood Watch
  • Today

    Today: Mostly sunny, with a high near 89. South southwest wind 3 to 5 mph.

    High: 89 °F

    Mostly Sunny

  • Tonight

    Tonight: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 3am.  Increasing clouds, with a low around 70. Light southeast wind.  Chance of precipitation is 70%.

    Low: 70 °F

    Chance
    T-storms then
    Showers
    Likely

  • Friday

    Friday: Showers and thunderstorms likely before 4pm, then showers likely and possibly a thunderstorm between 4pm and 5pm, then a chance of showers and thunderstorms after 5pm.  Mostly cloudy, with a high near 86. South wind 5 to 10 mph, with gusts as high as 18 mph.  Chance of precipitation is 70%.

    High: 86 °F

    Showers
    Likely

  • Friday Night

    Friday Night: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 7pm.  Mostly cloudy, with a low around 72. South southwest wind 5 to 9 mph becoming light  after midnight.  Chance of precipitation is 70%.

    Low: 72 °F

    Showers
    Likely

  • Saturday

    Saturday: Showers likely and possibly a thunderstorm before 1pm, then a chance of showers and thunderstorms after 1pm.  Partly sunny, with a high near 89. Southwest wind 3 to 7 mph.  Chance of precipitation is 60%.

    High: 89 °F

    Showers
    Likely

  • Saturday Night

    Saturday Night: A 20 percent chance of showers and thunderstorms before 1am.  Partly cloudy, with a low around 74. South wind 3 to 5 mph.

    Low: 74 °F

    Slight Chance
    T-storms

  • Sunday

    Sunday: Sunny, with a high near 95. South southwest wind 5 to 10 mph.

    High: 95 °F

    Sunny

  • Sunday Night

    Sunday Night: Clear, with a low around 76. South southwest wind 5 to 9 mph.

    Low: 76 °F

    Clear

  • Monday

    Monday: Sunny and hot, with a high near 97. Light south southwest wind increasing to 5 to 9 mph in the morning.

    High: 97 °F

    Hot

Detailed Forecast

Today
Mostly sunny, with a high near 89. South southwest wind 3 to 5 mph.
Tonight
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 3am. Increasing clouds, with a low around 70. Light southeast wind. Chance of precipitation is 70%.
Friday
Showers and thunderstorms likely before 4pm, then showers likely and possibly a thunderstorm between 4pm and 5pm, then a chance of showers and thunderstorms after 5pm. Mostly cloudy, with a high near 86. South wind 5 to 10 mph, with gusts as high as 18 mph. Chance of precipitation is 70%.
Friday Night
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 7pm. Mostly cloudy, with a low around 72. South southwest wind 5 to 9 mph becoming light after midnight. Chance of precipitation is 70%.
Saturday
Showers likely and possibly a thunderstorm before 1pm, then a chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 89. Southwest wind 3 to 7 mph. Chance of precipitation is 60%.
Saturday Night
A 20 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 74. South wind 3 to 5 mph.
Sunday
Sunny, with a high near 95. South southwest wind 5 to 10 mph.
Sunday Night
Clear, with a low around 76. South southwest wind 5 to 9 mph.
Monday
Sunny and hot, with a high near 97. Light south southwest wind increasing to 5 to 9 mph in the morning.
Monday Night
Clear, with a low around 77. South wind 5 to 8 mph becoming calm after midnight.
Tuesday
Sunny and hot, with a high near 99. Calm wind becoming south southwest around 5 mph in the afternoon.
Tuesday Night
Clear, with a low around 77. South wind around 5 mph becoming calm in the evening.
Wednesday
Sunny and hot, with a high near 100. Light south southwest wind.
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ABOUT THIS FORECAST

 
Point Forecast:
Carbondale IL
 37.72°N 89.23°W
9:51 am CDT Jun 25, 2026
9am CDT Jun 25, 2026-6pm CDT Jul 1, 2026
 
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