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.

Fair

26°F

-3°C

Humidity 63%
Wind Speed SE 8 mph
Barometer 30.26 in (1025.2 mb)
Dewpoint 15°F (-9°C)
Visibility 10.00 mi
Wind Chill18°F (-8°C)
Last update 8 Feb 3:52 am CST
Extended Forecast for

Carbondale IL

  • Today

    Today: Partly sunny, with a high near 45. Southeast wind 5 to 7 mph.

    High: 45 °F

    Partly Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 29. Light east wind.

    Low: 29 °F

    Partly Cloudy

  • Monday

    Monday: Sunny, with a high near 55. Calm wind.

    High: 55 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 40. Calm wind becoming south southwest around 6 mph in the evening.

    Low: 40 °F

    Mostly Clear

  • Tuesday

    Tuesday: Partly sunny, with a high near 61. South southwest wind around 6 mph becoming north northwest in the afternoon.

    High: 61 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: A 50 percent chance of showers. Mostly cloudy, with a low around 37. North wind around 6 mph.

    Low: 37 °F

    Chance
    Showers

  • Wednesday

    Wednesday: A 20 percent chance of showers before noon. Partly sunny, with a high near 51. North northeast wind around 6 mph.

    High: 51 °F

    Slight Chance
    Showers then
    Partly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 33. Light east northeast wind.

    Low: 33 °F

    Mostly Cloudy

  • Thursday

    Thursday: A chance of showers, mainly after noon. Mostly cloudy, with a high near 48. East northeast wind 3 to 7 mph.

    High: 48 °F

    Chance
    Showers

Detailed Forecast

Today
Partly sunny, with a high near 45. Southeast wind 5 to 7 mph.
Tonight
Partly cloudy, with a low around 29. Light east wind.
Monday
Sunny, with a high near 55. Calm wind.
Monday Night
Mostly clear, with a low around 40. Calm wind becoming south southwest around 6 mph in the evening.
Tuesday
Partly sunny, with a high near 61. South southwest wind around 6 mph becoming north northwest in the afternoon.
Tuesday Night
A 50 percent chance of showers. Mostly cloudy, with a low around 37. North wind around 6 mph.
Wednesday
A 20 percent chance of showers before noon. Partly sunny, with a high near 51. North northeast wind around 6 mph.
Wednesday Night
Mostly cloudy, with a low around 33. Light east northeast wind.
Thursday
A chance of showers, mainly after noon. Mostly cloudy, with a high near 48. East northeast wind 3 to 7 mph.
Thursday Night
A chance of showers. Mostly cloudy, with a low around 33. East northeast wind around 6 mph.
Friday
A slight chance of showers. Mostly sunny, with a high near 50. East northeast wind 5 to 7 mph.
Friday Night
A chance of showers. Partly cloudy, with a low around 33. East wind around 6 mph.
Saturday
A chance of showers. Mostly cloudy, with a high near 50. Southeast wind 6 to 9 mph.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Carbondale IL
 37.72°N 89.2°W
Last Update:
3:16 am CST Feb 8, 2026
Forecast Valid:
4am CST Feb 8, 2026-6pm CST Feb 14, 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