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

33°F

1°C

Humidity 75%
Wind Speed N 6 mph
Barometer 29.96 in (1014.7 mb)
Dewpoint 26°F (-3°C)
Visibility 10.00 mi
Wind Chill27°F (-3°C)
Last update 2 Jan 8:52 pm CST
Extended Forecast for

Carbondale IL

  • Tonight

    Tonight: Mostly cloudy, with a steady temperature around 32. North northeast wind 3 to 5 mph.

    Low: 32 °F

    Mostly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 42. North northeast wind around 6 mph.

    High: 42 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 25. Light north northwest wind.

    Low: 25 °F

    Mostly Clear

  • Sunday

    Sunday: Increasing clouds, with a high near 41. Calm wind.

    High: 41 °F

    Increasing
    Clouds

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 31. Calm wind becoming south around 6 mph after midnight.

    Low: 31 °F

    Partly Cloudy

  • Monday

    Monday: Sunny, with a high near 54. South southwest wind 6 to 10 mph.

    High: 54 °F

    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 46. South southwest wind around 8 mph.

    Low: 46 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 62. Southwest wind 5 to 9 mph.

    High: 62 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 43. Light and variable wind.

    Low: 43 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Mostly cloudy, with a steady temperature around 32. North northeast wind 3 to 5 mph.
Saturday
Mostly sunny, with a high near 42. North northeast wind around 6 mph.
Saturday Night
Mostly clear, with a low around 25. Light north northwest wind.
Sunday
Increasing clouds, with a high near 41. Calm wind.
Sunday Night
Partly cloudy, with a low around 31. Calm wind becoming south around 6 mph after midnight.
Monday
Sunny, with a high near 54. South southwest wind 6 to 10 mph.
Monday Night
Partly cloudy, with a low around 46. South southwest wind around 8 mph.
Tuesday
Partly sunny, with a high near 62. Southwest wind 5 to 9 mph.
Tuesday Night
Mostly cloudy, with a low around 43. Light and variable wind.
Wednesday
Mostly cloudy, with a high near 61. Calm wind becoming south around 5 mph.
Wednesday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 50. Calm wind becoming south around 6 mph after midnight.
Thursday
Showers likely. Mostly cloudy, with a high near 63. South wind 6 to 9 mph.
Thursday Night
A chance of showers. Partly cloudy, with a low around 52. South southwest wind around 9 mph.
Friday
A chance of showers. Mostly sunny, with a high near 62. South southwest wind 7 to 10 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 89.23°W
Last Update:
8:27 pm CST Jan 2, 2026
Forecast Valid:
9pm CST Jan 2, 2026-6pm CST Jan 9, 2026
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation