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

31°F

-1°C

Humidity 79%
Wind Speed SW 10 mph
Barometer 29.95 in (1014.7 mb)
Dewpoint 25°F (-4°C)
Visibility 8.00 mi
Wind Chill22°F (-6°C)
Last update 5 Dec 9:52 pm CST
Extended Forecast for

Carbondale IL

  • Tonight

    Tonight: Increasing clouds, with a low around 28. Southwest wind 3 to 6 mph.

    Low: 28 °F

    Increasing
    Clouds

  • Saturday

    Saturday: Partly sunny, with a high near 45. Light and variable wind.

    High: 45 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Cloudy, with a low around 34. Calm wind becoming south around 5 mph after midnight.

    Low: 34 °F

    Cloudy

  • Sunday

    Sunday: Mostly cloudy, with a high near 46. South wind 5 to 10 mph becoming north in the afternoon.

    High: 46 °F

    Mostly Cloudy

  • Sunday Night

    Sunday Night: A 30 percent chance of snow showers before midnight. Mostly cloudy, with a low around 23. North wind 7 to 10 mph.

    Low: 23 °F

    Chance Snow
    Showers then
    Mostly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 35. North wind 5 to 7 mph becoming calm in the afternoon.

    High: 35 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 24. Calm wind becoming south southwest 5 to 8 mph after midnight.

    Low: 24 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 47. South southwest wind 9 to 13 mph, with gusts as high as 21 mph.

    High: 47 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 38. South southwest wind 10 to 14 mph, with gusts as high as 21 mph.

    Low: 38 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Increasing clouds, with a low around 28. Southwest wind 3 to 6 mph.
Saturday
Partly sunny, with a high near 45. Light and variable wind.
Saturday Night
Cloudy, with a low around 34. Calm wind becoming south around 5 mph after midnight.
Sunday
Mostly cloudy, with a high near 46. South wind 5 to 10 mph becoming north in the afternoon.
Sunday Night
A 30 percent chance of snow showers before midnight. Mostly cloudy, with a low around 23. North wind 7 to 10 mph.
Monday
Mostly sunny, with a high near 35. North wind 5 to 7 mph becoming calm in the afternoon.
Monday Night
Partly cloudy, with a low around 24. Calm wind becoming south southwest 5 to 8 mph after midnight.
Tuesday
Mostly sunny, with a high near 47. South southwest wind 9 to 13 mph, with gusts as high as 21 mph.
Tuesday Night
Mostly cloudy, with a low around 38. South southwest wind 10 to 14 mph, with gusts as high as 21 mph.
Wednesday
A chance of showers, mainly before noon. Partly sunny, with a high near 48. West northwest wind 8 to 14 mph, with gusts as high as 21 mph.
Wednesday Night
A slight chance of showers. Mostly cloudy, with a low around 28. West northwest wind around 7 mph.
Thursday
Partly sunny, with a high near 43. North wind 6 to 8 mph becoming south southwest in the afternoon.
Thursday Night
Mostly cloudy, with a low around 25. South southwest wind around 7 mph becoming northwest after midnight.
Friday
Mostly sunny, with a high near 36. Northwest wind 7 to 9 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:
7:27 pm CST Dec 5, 2025
Forecast Valid:
10pm CST Dec 5, 2025-6pm CST Dec 12, 2025
 
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Additional Resources

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High Temperature

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Chance of Precipitation