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

65°F

18°C

Humidity 32%
Wind Speed S 8 mph
Barometer 30.09 in (1018.7 mb)
Dewpoint 34°F (1°C)
Visibility 10.00 mi
Last update 29 Mar 10:52 pm CDT
Extended Forecast for

Carbondale IL

  • Tonight

    Tonight: Partly cloudy, with a low around 59. South southwest wind 10 to 13 mph, with gusts as high as 22 mph.

    Low: 59 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 79. Breezy, with a south southwest wind 14 to 21 mph, with gusts as high as 31 mph.

    High: 79 °F

    Mostly Sunny
    and Breezy

  • Monday Night

    Monday Night: Mostly clear, with a low around 65. South southwest wind around 14 mph, with gusts as high as 24 mph.

    Low: 65 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 83. Breezy, with a south southwest wind 14 to 20 mph, with gusts as high as 32 mph.

    High: 83 °F

    Mostly Sunny
    and Breezy

  • Tuesday Night

    Tuesday Night: A 50 percent chance of showers after 1am. Mostly cloudy, with a low around 63. South southwest wind 9 to 15 mph, with gusts as high as 24 mph.

    Low: 63 °F

    Mostly Cloudy
    then Chance
    Showers

  • Wednesday

    Wednesday: Showers, with thunderstorms also possible after 1pm. High near 77. South southwest wind 8 to 10 mph, with gusts as high as 18 mph. Chance of precipitation is 80%.

    High: 77 °F

    Showers

  • Wednesday Night

    Wednesday Night: Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 61. South southeast wind 7 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 70%.

    Low: 61 °F

    Showers
    Likely

  • Thursday

    Thursday: Showers and possibly a thunderstorm. Cloudy, with a high near 73. South southwest wind 11 to 15 mph, with gusts as high as 23 mph.

    High: 73 °F

    Showers

  • Thursday Night

    Thursday Night: Showers likely. Mostly cloudy, with a low around 55. South southwest wind 9 to 14 mph, with gusts as high as 20 mph.

    Low: 55 °F

    Showers
    Likely

Detailed Forecast

Tonight
Partly cloudy, with a low around 59. South southwest wind 10 to 13 mph, with gusts as high as 22 mph.
Monday
Mostly sunny, with a high near 79. Breezy, with a south southwest wind 14 to 21 mph, with gusts as high as 31 mph.
Monday Night
Mostly clear, with a low around 65. South southwest wind around 14 mph, with gusts as high as 24 mph.
Tuesday
Mostly sunny, with a high near 83. Breezy, with a south southwest wind 14 to 20 mph, with gusts as high as 32 mph.
Tuesday Night
A 50 percent chance of showers after 1am. Mostly cloudy, with a low around 63. South southwest wind 9 to 15 mph, with gusts as high as 24 mph.
Wednesday
Showers, with thunderstorms also possible after 1pm. High near 77. South southwest wind 8 to 10 mph, with gusts as high as 18 mph. Chance of precipitation is 80%.
Wednesday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 61. South southeast wind 7 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 70%.
Thursday
Showers and possibly a thunderstorm. Cloudy, with a high near 73. South southwest wind 11 to 15 mph, with gusts as high as 23 mph.
Thursday Night
Showers likely. Mostly cloudy, with a low around 55. South southwest wind 9 to 14 mph, with gusts as high as 20 mph.
Friday
A chance of showers. Mostly cloudy, with a high near 75. South wind 9 to 11 mph, with gusts as high as 18 mph.
Friday Night
A chance of showers. Mostly cloudy, with a low around 60. South southeast wind around 9 mph, with gusts as high as 18 mph.
Saturday
Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 75. South wind 10 to 15 mph, with gusts as high as 24 mph.
Saturday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 51. South southwest wind 13 to 15 mph becoming west after midnight. Winds could gust as high as 22 mph.
Sunday
A chance of showers. Mostly cloudy, with a high near 64. Northwest wind around 14 mph, with gusts as high as 22 mph.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Carbondale IL
 37.72°N 89.23°W
Last Update:
8:26 pm CDT Mar 29, 2026
Forecast Valid:
11pm CDT Mar 29, 2026-6pm CDT Apr 5, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation