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

48°F

9°C

Humidity 61%
Wind Speed S 5 mph
Barometer 30.09 in (1018.9 mb)
Dewpoint 35°F (2°C)
Visibility 10.00 mi
Wind Chill46°F (8°C)
Last update 18 Mar 11:52 pm CDT
Extended Forecast for

Carbondale IL

  • Overnight

    Overnight: Mostly cloudy, with a low around 44. South southwest wind around 5 mph.

    Low: 44 °F

    Mostly Cloudy

  • Thursday

    Thursday: Mostly cloudy through mid morning, then gradual clearing, with a high near 72. South southwest wind 3 to 6 mph.

    High: 72 °F

    Becoming
    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 51. South southeast wind 3 to 5 mph.

    Low: 51 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 80. Southwest wind around 7 mph.

    High: 80 °F

    Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 53. South southwest wind 3 to 6 mph.

    Low: 53 °F

    Partly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 80. Calm wind becoming west around 6 mph in the afternoon.

    High: 80 °F

    Sunny

  • Saturday Night

    Saturday Night: Clear, with a low around 58. South wind 3 to 6 mph.

    Low: 58 °F

    Clear

  • Sunday

    Sunday: Sunny, with a high near 84. South southwest wind 7 to 13 mph, with gusts as high as 21 mph.

    High: 84 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 41. North wind around 13 mph, with gusts as high as 22 mph.

    Low: 41 °F

    Mostly Cloudy

Detailed Forecast

Overnight
Mostly cloudy, with a low around 44. South southwest wind around 5 mph.
Thursday
Mostly cloudy through mid morning, then gradual clearing, with a high near 72. South southwest wind 3 to 6 mph.
Thursday Night
Mostly clear, with a low around 51. South southeast wind 3 to 5 mph.
Friday
Sunny, with a high near 80. Southwest wind around 7 mph.
Friday Night
Partly cloudy, with a low around 53. South southwest wind 3 to 6 mph.
Saturday
Sunny, with a high near 80. Calm wind becoming west around 6 mph in the afternoon.
Saturday Night
Clear, with a low around 58. South wind 3 to 6 mph.
Sunday
Sunny, with a high near 84. South southwest wind 7 to 13 mph, with gusts as high as 21 mph.
Sunday Night
Mostly cloudy, with a low around 41. North wind around 13 mph, with gusts as high as 22 mph.
Monday
Mostly sunny, with a high near 56. North northeast wind 9 to 11 mph, with gusts as high as 20 mph.
Monday Night
Mostly clear, with a low around 36. East northeast wind 5 to 8 mph.
Tuesday
Mostly sunny, with a high near 61. East southeast wind 5 to 7 mph.
Tuesday Night
Partly cloudy, with a low around 42. Southeast wind around 6 mph.
Wednesday
Partly sunny, with a high near 70. South wind 6 to 11 mph, with gusts as high as 18 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:
11:36 pm CDT Mar 18, 2026
Forecast Valid:
12am CDT Mar 19, 2026-6pm CDT Mar 25, 2026
 
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Additional Resources

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Chance of Precipitation