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.

Overcast

27°F

-3°C

Humidity 69%
Wind Speed SW 6 mph
Barometer 30.23 in (1024.2 mb)
Dewpoint 18°F (-8°C)
Visibility 10.00 mi
Wind Chill20°F (-7°C)
Last update 2 Feb 6:52 am CST
Extended Forecast for

Carbondale IL

  • Today

    Today: Mostly sunny, with a high near 39. Calm wind becoming southwest around 5 mph in the afternoon.

    High: 39 °F

    Mostly Sunny

  • Tonight

    Tonight: Mostly cloudy, with a low around 26. South southeast wind around 5 mph becoming calm in the evening.

    Low: 26 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: A chance of snow between 7am and 9am, then a chance of rain after 9am. Cloudy, with a high near 37. Calm wind becoming north 5 to 8 mph in the afternoon. Chance of precipitation is 40%.

    High: 37 °F

    Chance
    Rain/Snow
    then Chance
    Rain

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 20. North wind 5 to 7 mph.

    Low: 20 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 31. North wind around 6 mph.

    High: 31 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 14. Light and variable wind.

    Low: 14 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 37. Calm wind becoming south 5 to 7 mph in the afternoon.

    High: 37 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 29. Southwest wind around 8 mph.

    Low: 29 °F

    Mostly Clear

  • Friday

    Friday: Mostly sunny, with a high near 47. West southwest wind 7 to 10 mph becoming north northwest in the afternoon.

    High: 47 °F

    Mostly Sunny

Detailed Forecast

Today
Mostly sunny, with a high near 39. Calm wind becoming southwest around 5 mph in the afternoon.
Tonight
Mostly cloudy, with a low around 26. South southeast wind around 5 mph becoming calm in the evening.
Tuesday
A chance of snow between 7am and 9am, then a chance of rain after 9am. Cloudy, with a high near 37. Calm wind becoming north 5 to 8 mph in the afternoon. Chance of precipitation is 40%.
Tuesday Night
Mostly cloudy, with a low around 20. North wind 5 to 7 mph.
Wednesday
Partly sunny, with a high near 31. North wind around 6 mph.
Wednesday Night
Partly cloudy, with a low around 14. Light and variable wind.
Thursday
Mostly sunny, with a high near 37. Calm wind becoming south 5 to 7 mph in the afternoon.
Thursday Night
Mostly clear, with a low around 29. Southwest wind around 8 mph.
Friday
Mostly sunny, with a high near 47. West southwest wind 7 to 10 mph becoming north northwest in the afternoon.
Friday Night
Partly cloudy, with a low around 22. North northwest wind around 6 mph.
Saturday
Sunny, with a high near 38. North northeast wind around 6 mph.
Saturday Night
Partly cloudy, with a low around 24. East wind around 5 mph becoming light and variable.
Sunday
Mostly sunny, with a high near 43. South wind around 6 mph.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Carbondale IL
 37.72°N 89.2°W
Last Update:
6:26 am CST Feb 2, 2026
Forecast Valid:
7am CST Feb 2, 2026-6pm CST Feb 8, 2026
 
Forecast Discussion
 
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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