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

29°F

-2°C

Humidity 82%
Wind Speed Calm
Barometer 30.13 in (1020.7 mb)
Dewpoint 24°F (-4°C)
Visibility 10.00 mi
Last update 3 Jan 9:52 pm CST
Extended Forecast for

Carbondale IL

  • Tonight

    Tonight: Mostly clear, with a steady temperature around 28. Calm wind.

    Low: 28 °F

    Mostly Clear

  • Sunday

    Sunday: Increasing clouds, with a high near 43. Light and variable wind.

    High: 43 °F

    Increasing
    Clouds

  • Sunday Night

    Sunday Night: Mostly cloudy during the early evening, then gradual clearing, with a low around 33. South wind 3 to 6 mph.

    Low: 33 °F

    Gradual
    Clearing

  • Monday

    Monday: Sunny, with a high near 56. South southwest wind 6 to 10 mph.

    High: 56 °F

    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 47. South southwest wind around 8 mph.

    Low: 47 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 63. Southwest wind 6 to 10 mph, with gusts as high as 18 mph.

    High: 63 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 42. South southwest wind around 5 mph becoming calm in the evening.

    Low: 42 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 61. Light and variable wind.

    High: 61 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: A chance of showers after midnight. Mostly cloudy, with a low around 49. Calm wind becoming south southeast around 6 mph after midnight.

    Low: 49 °F

    Mostly Cloudy
    then Chance
    Showers

Detailed Forecast

Tonight
Mostly clear, with a steady temperature around 28. Calm wind.
Sunday
Increasing clouds, with a high near 43. Light and variable wind.
Sunday Night
Mostly cloudy during the early evening, then gradual clearing, with a low around 33. South wind 3 to 6 mph.
Monday
Sunny, with a high near 56. South southwest wind 6 to 10 mph.
Monday Night
Partly cloudy, with a low around 47. South southwest wind around 8 mph.
Tuesday
Partly sunny, with a high near 63. Southwest wind 6 to 10 mph, with gusts as high as 18 mph.
Tuesday Night
Partly cloudy, with a low around 42. South southwest wind around 5 mph becoming calm in the evening.
Wednesday
Partly sunny, with a high near 61. Light and variable wind.
Wednesday Night
A chance of showers after midnight. Mostly cloudy, with a low around 49. Calm wind becoming south southeast around 6 mph after midnight.
Thursday
Showers likely, mainly after noon. Mostly cloudy, with a high near 63. South wind 6 to 9 mph.
Thursday Night
A chance of showers. Mostly cloudy, with a low around 51. South wind around 8 mph.
Friday
A chance of showers. Partly sunny, with a high near 61. Southwest wind 7 to 9 mph.
Friday Night
A slight chance of showers. Partly cloudy, with a low around 38. West wind around 7 mph.
Saturday
Mostly sunny, with a high near 48. West wind 7 to 10 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:
10:02 pm CST Jan 3, 2026
Forecast Valid:
10pm CST Jan 3, 2026-6pm CST Jan 10, 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