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

55°F

13°C

Humidity 69%
Wind Speed E 6 mph
Barometer 30.14 in (1020.4 mb)
Dewpoint 45°F (7°C)
Visibility 10.00 mi
Wind Chill54°F (12°C)
Last update 14 May 7:52 am CDT
Extended Forecast for

Carbondale IL

  • Today

    Today: Sunny, with a high near 77. Calm wind.

    High: 77 °F

    Sunny

  • Tonight

    Tonight: Clear during the evening, then mostly cloudy overnight, with a low around 54. South southeast wind 3 to 6 mph.

    Low: 54 °F

    Partly Cloudy

  • Friday

    Friday: A 40 percent chance of showers and thunderstorms before 11am. Mostly sunny, with a high near 83. South wind 8 to 14 mph, with gusts as high as 23 mph.

    High: 83 °F

    Chance
    Showers then
    Mostly Sunny

  • Friday Night

    Friday Night: A slight chance of showers and thunderstorms between 1am and 4am, then a slight chance of showers after 4am. Mostly cloudy, with a low around 67. South wind 8 to 10 mph, with gusts as high as 18 mph. Chance of precipitation is 20%.

    Low: 67 °F

    Mostly Cloudy
    then Slight
    Chance
    T-storms

  • Saturday

    Saturday: A chance of showers, with thunderstorms also possible after 7am. Partly sunny, with a high near 86. South southwest wind 10 to 13 mph, with gusts as high as 22 mph. Chance of precipitation is 30%.

    High: 86 °F

    Chance
    Showers

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 66. South wind 6 to 9 mph, with gusts as high as 20 mph.

    Low: 66 °F

    Partly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 90. South wind 6 to 15 mph, with gusts as high as 22 mph.

    High: 90 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 69. South wind 8 to 11 mph, with gusts as high as 22 mph.

    Low: 69 °F

    Mostly Clear

  • Monday

    Monday: A chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 88. Breezy, with a south wind 10 to 20 mph, with gusts as high as 28 mph.

    High: 88 °F

    Sunny then
    Chance
    T-storms and
    Breezy

Detailed Forecast

Today
Sunny, with a high near 77. Calm wind.
Tonight
Clear during the evening, then mostly cloudy overnight, with a low around 54. South southeast wind 3 to 6 mph.
Friday
A 40 percent chance of showers and thunderstorms before 11am. Mostly sunny, with a high near 83. South wind 8 to 14 mph, with gusts as high as 23 mph.
Friday Night
A slight chance of showers and thunderstorms between 1am and 4am, then a slight chance of showers after 4am. Mostly cloudy, with a low around 67. South wind 8 to 10 mph, with gusts as high as 18 mph. Chance of precipitation is 20%.
Saturday
A chance of showers, with thunderstorms also possible after 7am. Partly sunny, with a high near 86. South southwest wind 10 to 13 mph, with gusts as high as 22 mph. Chance of precipitation is 30%.
Saturday Night
Partly cloudy, with a low around 66. South wind 6 to 9 mph, with gusts as high as 20 mph.
Sunday
Sunny, with a high near 90. South wind 6 to 15 mph, with gusts as high as 22 mph.
Sunday Night
Mostly clear, with a low around 69. South wind 8 to 11 mph, with gusts as high as 22 mph.
Monday
A chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 88. Breezy, with a south wind 10 to 20 mph, with gusts as high as 28 mph.
Monday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 72. South wind 10 to 15 mph, with gusts as high as 23 mph.
Tuesday
Showers and thunderstorms likely. Partly sunny, with a high near 84. South southwest wind 9 to 16 mph, with gusts as high as 24 mph.
Tuesday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 66. South wind 5 to 10 mph.
Wednesday
Showers likely and possibly a thunderstorm. Partly sunny, with a high near 82. South southwest wind 5 to 8 mph becoming west in the afternoon.
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ABOUT THIS FORECAST

 
Point Forecast:
Carbondale IL
 37.74°N 89.23°W
Last Update:
5:31 am CDT May 14, 2026
Forecast Valid:
8am CDT May 14, 2026-6pm CDT May 20, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

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Chance of Precipitation