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

29°F

-2°C

Humidity 47%
Wind Speed NW 6 mph
Barometer 30.34 in (1028.0 mb)
Dewpoint 11°F (-12°C)
Visibility 10.00 mi
Wind Chill23°F (-5°C)
Last update 27 Jan 4:52 pm CST
Extended Forecast for

Carbondale IL

  • Tonight

    Tonight: Patchy fog before 1am, then patchy fog after 2am. Otherwise, mostly cloudy, with a low around 1. Light west wind.

    Low: 1 °F

    Patchy Fog

  • Wednesday

    Wednesday: Areas of fog before 9am. Otherwise, mostly sunny, with a high near 30. Calm wind becoming west around 6 mph.

    High: 30 °F

    Areas Fog
    then Mostly
    Sunny

  • Wednesday Night

    Wednesday Night: Increasing clouds, with a low around 12. Calm wind.

    Low: 12 °F

    Increasing
    Clouds

  • Thursday

    Thursday: Mostly cloudy, with a high near 27. Calm wind becoming northeast around 6 mph in the afternoon.

    High: 27 °F

    Mostly Cloudy

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 8. North wind around 6 mph.

    Low: 8 °F

    Mostly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 17. North wind 6 to 10 mph.

    High: 17 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 2. North wind 6 to 9 mph.

    Low: 2 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 16. North northwest wind 6 to 10 mph.

    High: 16 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 3. Northwest wind around 5 mph becoming calm in the evening.

    Low: 3 °F

    Partly Cloudy

Detailed Forecast

Tonight
Patchy fog before 1am, then patchy fog after 2am. Otherwise, mostly cloudy, with a low around 1. Light west wind.
Wednesday
Areas of fog before 9am. Otherwise, mostly sunny, with a high near 30. Calm wind becoming west around 6 mph.
Wednesday Night
Increasing clouds, with a low around 12. Calm wind.
Thursday
Mostly cloudy, with a high near 27. Calm wind becoming northeast around 6 mph in the afternoon.
Thursday Night
Mostly cloudy, with a low around 8. North wind around 6 mph.
Friday
Mostly sunny, with a high near 17. North wind 6 to 10 mph.
Friday Night
Partly cloudy, with a low around 2. North wind 6 to 9 mph.
Saturday
Mostly sunny, with a high near 16. North northwest wind 6 to 10 mph.
Saturday Night
Partly cloudy, with a low around 3. Northwest wind around 5 mph becoming calm in the evening.
Sunday
Partly sunny, with a high near 25. Calm wind becoming west southwest around 6 mph in the morning.
Sunday Night
A slight chance of snow showers. Mostly cloudy, with a low around 14. South southwest wind 3 to 5 mph.
Monday
Partly sunny, with a high near 33. West wind 3 to 6 mph.
Monday Night
Mostly cloudy, with a low around 16. Light west northwest wind.
Tuesday
Partly sunny, with a high near 33. Calm wind becoming south southwest around 6 mph in the morning.
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:
4:46 pm CST Jan 27, 2026
Forecast Valid:
5pm CST Jan 27, 2026-6pm CST Feb 3, 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