National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

Southern Illinois Airport (KMDH)

Lat: 37.78°NLon: 89.25°WElev: 400ft.

Fair

37°F

3°C

Humidity 82%
Wind Speed S 16 mph
Barometer 30.14 in (1020.9 mb)
Dewpoint 32°F (0°C)
Visibility 10.00 mi
Wind Chill28°F (-2°C)
Last update 21 Jan 6:52 am CST
Extended Forecast for

Carbondale IL

  • Today

    Today: A 20 percent chance of showers before 8am. Mostly cloudy, then gradually becoming sunny, with a high near 47. West southwest wind 6 to 13 mph, with gusts as high as 23 mph.

    High: 47 °F

    Slight Chance
    Showers then
    Mostly Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 24. West southwest wind around 6 mph becoming light and variable after midnight.

    Low: 24 °F

    Mostly Clear

  • Thursday

    Thursday: Mostly sunny, with a high near 40. Light north wind.

    High: 40 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 15. Light northeast wind becoming north 8 to 13 mph after midnight. Winds could gust as high as 21 mph.

    Low: 15 °F

    Mostly Cloudy

  • Friday

    Friday: Mostly cloudy, with a high near 22. North wind around 14 mph, with gusts as high as 24 mph.

    High: 22 °F

    Mostly Cloudy

  • Friday Night

    Friday Night: A 20 percent chance of snow showers after midnight. Mostly cloudy, with a low around 5. North northeast wind 11 to 14 mph, with gusts as high as 22 mph.

    Low: 5 °F

    Mostly Cloudy
    then Slight
    Chance Snow
    Showers

  • Saturday

    Saturday: Snow showers likely, mainly after noon. Cloudy, with a high near 15. North northeast wind around 11 mph, with gusts as high as 20 mph. Chance of precipitation is 60%.

    High: 15 °F

    Snow Showers
    Likely

  • Saturday Night

    Saturday Night: Snow showers likely, mainly before midnight. Mostly cloudy, with a low around 10. North northeast wind 7 to 10 mph.

    Low: 10 °F

    Snow Showers
    Likely

  • Sunday

    Sunday: A slight chance of snow showers before noon. Mostly cloudy, with a high near 20. North wind 6 to 8 mph.

    High: 20 °F

    Slight Chance
    Snow Showers
    then Partly
    Sunny

Detailed Forecast

Today
A 20 percent chance of showers before 8am. Mostly cloudy, then gradually becoming sunny, with a high near 47. West southwest wind 6 to 13 mph, with gusts as high as 23 mph.
Tonight
Mostly clear, with a low around 24. West southwest wind around 6 mph becoming light and variable after midnight.
Thursday
Mostly sunny, with a high near 40. Light north wind.
Thursday Night
Mostly cloudy, with a low around 15. Light northeast wind becoming north 8 to 13 mph after midnight. Winds could gust as high as 21 mph.
Friday
Mostly cloudy, with a high near 22. North wind around 14 mph, with gusts as high as 24 mph.
Friday Night
A 20 percent chance of snow showers after midnight. Mostly cloudy, with a low around 5. North northeast wind 11 to 14 mph, with gusts as high as 22 mph.
Saturday
Snow showers likely, mainly after noon. Cloudy, with a high near 15. North northeast wind around 11 mph, with gusts as high as 20 mph. Chance of precipitation is 60%.
Saturday Night
Snow showers likely, mainly before midnight. Mostly cloudy, with a low around 10. North northeast wind 7 to 10 mph.
Sunday
A slight chance of snow showers before noon. Mostly cloudy, with a high near 20. North wind 6 to 8 mph.
Sunday Night
Partly cloudy, with a low around 6. Northwest wind 3 to 5 mph.
Monday
Sunny, with a high near 23. Light and variable wind becoming west northwest around 6 mph in the morning.
Monday Night
Mostly clear, with a low around 8. South southwest wind 3 to 5 mph.
Tuesday
Mostly sunny, with a high near 31. South southwest wind 5 to 7 mph.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Carbondale IL
 37.72°N 89.23°W
Last Update:
5:46 am CST Jan 21, 2026
Forecast Valid:
6am CST Jan 21, 2026-6pm CST Jan 27, 2026
 
Forecast Discussion
 
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

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation