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

26°F

-3°C

Humidity 69%
Wind Speed S 8 mph
Barometer 30.20 in (1023.0 mb)
Dewpoint 17°F (-8°C)
Visibility 10.00 mi
Wind Chill18°F (-8°C)
Last update 2 Feb 2:52 am CST
Extended Forecast for

Carbondale IL

  • Overnight

    Overnight: Mostly cloudy, with a low around 18. South southwest wind around 6 mph.

    Low: 18 °F

    Mostly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 39. Southwest wind 3 to 5 mph.

    High: 39 °F

    Mostly Sunny

  • Monday Night

    Monday Night: 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 before 9am, then a chance of freezing rain between 9am and 10am, then a chance of rain after 10am. Cloudy, with a high near 37. Calm wind becoming north 5 to 8 mph in the morning. Chance of precipitation is 40%.

    High: 37 °F

    Chance Wintry
    Mix 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 7 to 9 mph.

    Low: 29 °F

    Mostly Clear

Detailed Forecast

Overnight
Mostly cloudy, with a low around 18. South southwest wind around 6 mph.
Monday
Mostly sunny, with a high near 39. Southwest wind 3 to 5 mph.
Monday Night
Mostly cloudy, with a low around 26. South southeast wind around 5 mph becoming calm in the evening.
Tuesday
A chance of snow before 9am, then a chance of freezing rain between 9am and 10am, then a chance of rain after 10am. Cloudy, with a high near 37. Calm wind becoming north 5 to 8 mph in the morning. 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 7 to 9 mph.
Friday
Mostly sunny, with a high near 46. 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 6 mph becoming south southeast after midnight.
Sunday
Mostly sunny, with a high near 43. South wind around 6 mph.
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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:
3:22 am CST Feb 2, 2026
Forecast Valid:
3am CST Feb 2, 2026-6pm CST Feb 8, 2026
 
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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