National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

Southern Illinois Airport (KMDH)

Lat: 37.78°NLon: 89.25°WElev: 400ft.

Fog/Mist

70°F

21°C

Humidity 100%
Wind Speed NW 5 mph
Barometer 30.01 in
Dewpoint 70°F (21°C)
Visibility 5.00 mi
Last update 7 Oct 7:48 am CDT
Extended Forecast for

Carbondale IL

  • Today

    Today: A 40 percent chance of showers and thunderstorms, mainly before 2pm. Patchy fog before 11am. Otherwise, mostly cloudy, with a high near 78. North wind 5 to 9 mph.

    High: 78 °F

    Chance
    Showers and
    Patchy Fog
    then Slight
    Chance
    T-storms

  • Tonight

    Tonight: Mostly cloudy, then gradually becoming mostly clear, with a low around 54. North wind around 7 mph.

    Low: 54 °F

    Decreasing
    Clouds

  • Wednesday

    Wednesday: Sunny, with a high near 73. Northeast wind 8 to 11 mph, with gusts as high as 20 mph.

    High: 73 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Clear, with a low around 45. Northeast wind around 6 mph.

    Low: 45 °F

    Clear

  • Thursday

    Thursday: Sunny, with a high near 70. Northeast wind 6 to 8 mph.

    High: 70 °F

    Sunny

  • Thursday Night

    Thursday Night: Clear, with a low around 41. East northeast wind around 5 mph becoming calm in the evening.

    Low: 41 °F

    Clear

  • Friday

    Friday: Sunny, with a high near 76. Light and variable wind.

    High: 76 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 52. Calm wind.

    Low: 52 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 79. Calm wind becoming south around 5 mph in the afternoon.

    High: 79 °F

    Sunny

Detailed Forecast

Today
A 40 percent chance of showers and thunderstorms, mainly before 2pm. Patchy fog before 11am. Otherwise, mostly cloudy, with a high near 78. North wind 5 to 9 mph.
Tonight
Mostly cloudy, then gradually becoming mostly clear, with a low around 54. North wind around 7 mph.
Wednesday
Sunny, with a high near 73. Northeast wind 8 to 11 mph, with gusts as high as 20 mph.
Wednesday Night
Clear, with a low around 45. Northeast wind around 6 mph.
Thursday
Sunny, with a high near 70. Northeast wind 6 to 8 mph.
Thursday Night
Clear, with a low around 41. East northeast wind around 5 mph becoming calm in the evening.
Friday
Sunny, with a high near 76. Light and variable wind.
Friday Night
Mostly clear, with a low around 52. Calm wind.
Saturday
Sunny, with a high near 79. Calm wind becoming south around 5 mph in the afternoon.
Saturday Night
Mostly clear, with a low around 54. Light southeast wind.
Sunday
Sunny, with a high near 80. Calm wind becoming south 5 to 8 mph in the morning.
Sunday Night
Mostly clear, with a low around 55. Southeast wind 3 to 5 mph.
Columbus Day
Sunny, with a high near 81. South wind 3 to 7 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:
8:31 am CDT Oct 7, 2025
Forecast Valid:
9am CDT Oct 7, 2025-6pm CDT Oct 13, 2025
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation