Current conditions at

Southern Illinois Airport (KMDH)

Lat: 37.78°NLon: 89.25°WElev: 400ft.

Fair

45°F

7°C

Humidity 76%
Wind Speed Calm
Barometer 29.92 in
Dewpoint 37°F (3°C)
Visibility 10.00 mi
Last update 26 Feb 8:52 pm CST
Extended Forecast for

Carbondale IL

  • Tonight

    Tonight: Clear, with a low around 36. Calm wind.

    Low: 36 °F

    Clear

  • Friday

    Friday: Patchy fog before 8am.  Otherwise, sunny, with a high near 68. Calm wind becoming southwest 5 to 9 mph in the morning.

    High: 68 °F

    Patchy Fog
    then Sunny

  • Friday Night

    Friday Night: Clear, with a low around 43. South southwest wind 5 to 7 mph.

    Low: 43 °F

    Clear

  • Saturday

    Saturday: Mostly sunny, with a high near 67. Northwest wind 5 to 7 mph becoming south southeast in the morning.

    High: 67 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 35. South wind 7 to 10 mph becoming north in the evening. Winds could gust as high as 18 mph.

    Low: 35 °F

    Mostly Clear

  • Sunday

    Sunday: A 30 percent chance of showers after noon.  Mostly cloudy, with a high near 46. Northeast wind around 10 mph, with gusts as high as 18 mph.

    High: 46 °F

    Mostly Cloudy
    then Chance
    Showers

  • Sunday Night

    Sunday Night: Rain and snow showers likely.  Cloudy, with a low around 34. Northeast wind around 10 mph.  Chance of precipitation is 70%.

    Low: 34 °F

    Rain/Snow
    Likely

  • Monday

    Monday: A chance of rain and snow showers before noon, then a slight chance of rain showers.  Mostly cloudy, with a high near 44. East northeast wind 7 to 10 mph.

    High: 44 °F

    Chance
    Rain/Snow
    then Slight
    Chance
    Showers

  • Monday Night

    Monday Night: A chance of showers, mainly after midnight.  Mostly cloudy, with a low around 33. East northeast wind around 6 mph.

    Low: 33 °F

    Chance
    Showers

Detailed Forecast

Tonight
Clear, with a low around 36. Calm wind.
Friday
Patchy fog before 8am. Otherwise, sunny, with a high near 68. Calm wind becoming southwest 5 to 9 mph in the morning.
Friday Night
Clear, with a low around 43. South southwest wind 5 to 7 mph.
Saturday
Mostly sunny, with a high near 67. Northwest wind 5 to 7 mph becoming south southeast in the morning.
Saturday Night
Mostly clear, with a low around 35. South wind 7 to 10 mph becoming north in the evening. Winds could gust as high as 18 mph.
Sunday
A 30 percent chance of showers after noon. Mostly cloudy, with a high near 46. Northeast wind around 10 mph, with gusts as high as 18 mph.
Sunday Night
Rain and snow showers likely. Cloudy, with a low around 34. Northeast wind around 10 mph. Chance of precipitation is 70%.
Monday
A chance of rain and snow showers before noon, then a slight chance of rain showers. Mostly cloudy, with a high near 44. East northeast wind 7 to 10 mph.
Monday Night
A chance of showers, mainly after midnight. Mostly cloudy, with a low around 33. East northeast wind around 6 mph.
Tuesday
A chance of showers. Cloudy, with a high near 51. East wind 5 to 8 mph becoming south in the morning.
Tuesday Night
Showers likely. Cloudy, with a low around 41. South wind around 7 mph.
Wednesday
A chance of showers. Cloudy, with a high near 61. South wind 7 to 10 mph.
Wednesday Night
Showers likely. Cloudy, with a low around 52. South wind 8 to 11 mph, with gusts as high as 20 mph.
Thursday
Showers and thunderstorms likely. Cloudy, with a high near 68. South southwest wind 10 to 14 mph, with gusts as high as 22 mph.
Basemap Options
Click map to change the forecast location
Loading map...

ABOUT THIS FORECAST

 
Point Forecast:
Carbondale IL
 37.72°N 89.23°W
9:13 pm CST Feb 26, 2026
10pm CST Feb 26, 2026-6pm CST Mar 5, 2026
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database