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 40%
Wind Speed N 9 mph
Barometer 30.23 in (1023.8 mb)
Dewpoint 40°F (4°C)
Visibility 10.00 mi
Last update 6 Apr 5:52 pm CDT
Extended Forecast for

Carbondale IL

  • Tonight

    Tonight: Mostly clear, with a low around 40. North wind around 6 mph.

    Low: 40 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 60. East northeast wind 8 to 11 mph, with gusts as high as 20 mph.

    High: 60 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 39. East wind 5 to 7 mph.

    Low: 39 °F

    Mostly Clear

  • Wednesday

    Wednesday: Mostly sunny, with a high near 73. South wind 5 to 10 mph.

    High: 73 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 53. South wind around 8 mph.

    Low: 53 °F

    Partly Cloudy

  • Thursday

    Thursday: Sunny, with a high near 75. South wind 8 to 10 mph, with gusts as high as 18 mph.

    High: 75 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 55. South wind around 6 mph.

    Low: 55 °F

    Mostly Clear

  • Friday

    Friday: A chance of showers, with thunderstorms also possible after 1pm. Mostly sunny, with a high near 78. Southwest wind 6 to 9 mph.

    High: 78 °F

    Chance
    Showers

  • Friday Night

    Friday Night: A slight chance of showers and thunderstorms. Mostly cloudy, with a low around 58. South southwest wind around 5 mph becoming light and variable in the evening.

    Low: 58 °F

    Slight Chance
    T-storms

Detailed Forecast

Tonight
Mostly clear, with a low around 40. North wind around 6 mph.
Tuesday
Mostly sunny, with a high near 60. East northeast wind 8 to 11 mph, with gusts as high as 20 mph.
Tuesday Night
Mostly clear, with a low around 39. East wind 5 to 7 mph.
Wednesday
Mostly sunny, with a high near 73. South wind 5 to 10 mph.
Wednesday Night
Partly cloudy, with a low around 53. South wind around 8 mph.
Thursday
Sunny, with a high near 75. South wind 8 to 10 mph, with gusts as high as 18 mph.
Thursday Night
Mostly clear, with a low around 55. South wind around 6 mph.
Friday
A chance of showers, with thunderstorms also possible after 1pm. Mostly sunny, with a high near 78. Southwest wind 6 to 9 mph.
Friday Night
A slight chance of showers and thunderstorms. Mostly cloudy, with a low around 58. South southwest wind around 5 mph becoming light and variable in the evening.
Saturday
A slight chance of showers, with thunderstorms also possible after 1pm. Partly sunny, with a high near 80. Light and variable wind becoming south southeast around 6 mph in the morning.
Saturday Night
Partly cloudy, with a low around 61. Southeast wind around 6 mph.
Sunday
Partly sunny, with a high near 83. South wind 6 to 15 mph, with gusts as high as 23 mph.
Sunday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 67. South wind 11 to 13 mph, with gusts as high as 24 mph.
Monday
A chance of showers and thunderstorms. Partly sunny, with a high near 84. South southwest wind 14 to 18 mph, with gusts as high as 29 mph.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Carbondale IL
 37.72°N 89.2°W
Last Update:
4:16 pm CDT Apr 6, 2026
Forecast Valid:
6pm CDT Apr 6, 2026-6pm CDT Apr 13, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation