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 50%
Wind Speed NW 6 mph
Barometer 29.80 in
Dewpoint 30°F (-1°C)
Visibility 10.00 mi
Wind Chill45°F (7°C)
Last update 25 Feb 9:52 am CST
Extended Forecast for

Carbondale IL

  • Today

    Today: Cloudy, with a high near 55. Light and variable wind.

    High: 55 °F

    Cloudy

  • Tonight

    Tonight: A 50 percent chance of showers, mainly between 9pm and 5am. Mostly cloudy, with a low around 39. Northeast wind 3 to 6 mph.

    Low: 39 °F

    Chance
    Showers

  • Thursday

    Thursday: Mostly sunny, with a high near 56. Northeast wind around 6 mph becoming calm in the afternoon.

    High: 56 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 37. Calm wind.

    Low: 37 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 66. Calm wind becoming southwest 5 to 9 mph in the morning.

    High: 66 °F

    Sunny

  • Friday Night

    Friday Night: Clear, with a low around 44. South southwest wind 5 to 7 mph.

    Low: 44 °F

    Clear

  • Saturday

    Saturday: Sunny, with a high near 68. West southwest wind 5 to 9 mph becoming east in the morning.

    High: 68 °F

    Sunny

  • Saturday Night

    Saturday Night: A slight chance of showers before midnight. Partly cloudy, with a low around 36. South wind 8 to 10 mph becoming north in the evening. Winds could gust as high as 18 mph.

    Low: 36 °F

    Slight Chance
    Showers then
    Mostly Cloudy

  • Sunday

    Sunday: A chance of showers after noon. Cloudy, with a high near 51. East northeast wind around 11 mph, with gusts as high as 18 mph.

    High: 51 °F

    Mostly Cloudy
    then Chance
    Showers

Detailed Forecast

Today
Cloudy, with a high near 55. Light and variable wind.
Tonight
A 50 percent chance of showers, mainly between 9pm and 5am. Mostly cloudy, with a low around 39. Northeast wind 3 to 6 mph.
Thursday
Mostly sunny, with a high near 56. Northeast wind around 6 mph becoming calm in the afternoon.
Thursday Night
Mostly clear, with a low around 37. Calm wind.
Friday
Sunny, with a high near 66. Calm wind becoming southwest 5 to 9 mph in the morning.
Friday Night
Clear, with a low around 44. South southwest wind 5 to 7 mph.
Saturday
Sunny, with a high near 68. West southwest wind 5 to 9 mph becoming east in the morning.
Saturday Night
A slight chance of showers before midnight. Partly cloudy, with a low around 36. South wind 8 to 10 mph becoming north in the evening. Winds could gust as high as 18 mph.
Sunday
A chance of showers after noon. Cloudy, with a high near 51. East northeast wind around 11 mph, with gusts as high as 18 mph.
Sunday Night
Rain showers likely before midnight, then rain likely, possibly mixed with snow showers. Cloudy, with a low around 34. East northeast wind around 10 mph.
Monday
A chance of rain and snow showers. Cloudy, with a high near 44. Northeast wind 8 to 10 mph, with gusts as high as 18 mph.
Monday Night
A chance of showers. Cloudy, with a low around 33. East northeast wind 6 to 8 mph.
Tuesday
A chance of showers. Cloudy, with a high near 50. East wind 6 to 8 mph becoming west in the afternoon.
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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:
9:46 am CST Feb 25, 2026
Forecast Valid:
10am CST Feb 25, 2026-6pm CST Mar 3, 2026
 
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Additional Resources

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Chance of Precipitation