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

57°F

14°C

Humidity 60%
Wind Speed N 18 mph
Barometer 29.97 in (1015.0 mb)
Dewpoint 43°F (6°C)
Visibility 10.00 mi
Last update 10 Feb 5:52 pm CST
Extended Forecast for

Carbondale IL

  • Tonight

    Tonight: A 30 percent chance of showers, mainly before 7pm. Mostly cloudy, then gradually becoming mostly clear, with a low around 31. North wind 7 to 10 mph.

    Low: 31 °F

    Chance
    Showers then
    Partly Cloudy

  • Wednesday

    Wednesday: Sunny, with a high near 49. North wind 5 to 8 mph.

    High: 49 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Increasing clouds, with a low around 29. Calm wind.

    Low: 29 °F

    Increasing
    Clouds

  • Thursday

    Thursday: Mostly cloudy, with a high near 48. Calm wind becoming east southeast around 5 mph in the afternoon.

    High: 48 °F

    Mostly Cloudy

  • Thursday Night

    Thursday Night: A 20 percent chance of showers before midnight. Mostly cloudy, with a low around 34. East wind around 5 mph becoming calm in the evening.

    Low: 34 °F

    Slight Chance
    Showers then
    Mostly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 54. Calm wind becoming southeast around 5 mph.

    High: 54 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 39. Light east southeast wind.

    Low: 39 °F

    Mostly Cloudy

  • Saturday

    Saturday: A chance of showers. Cloudy, with a high near 52. East southeast wind 3 to 7 mph.

    High: 52 °F

    Chance
    Showers

  • Saturday Night

    Saturday Night: Showers likely. Cloudy, with a low around 45. East wind around 8 mph.

    Low: 45 °F

    Showers
    Likely

Detailed Forecast

Tonight
A 30 percent chance of showers, mainly before 7pm. Mostly cloudy, then gradually becoming mostly clear, with a low around 31. North wind 7 to 10 mph.
Wednesday
Sunny, with a high near 49. North wind 5 to 8 mph.
Wednesday Night
Increasing clouds, with a low around 29. Calm wind.
Thursday
Mostly cloudy, with a high near 48. Calm wind becoming east southeast around 5 mph in the afternoon.
Thursday Night
A 20 percent chance of showers before midnight. Mostly cloudy, with a low around 34. East wind around 5 mph becoming calm in the evening.
Friday
Mostly sunny, with a high near 54. Calm wind becoming southeast around 5 mph.
Friday Night
Mostly cloudy, with a low around 39. Light east southeast wind.
Saturday
A chance of showers. Cloudy, with a high near 52. East southeast wind 3 to 7 mph.
Saturday Night
Showers likely. Cloudy, with a low around 45. East wind around 8 mph.
Sunday
A chance of showers, mainly before noon. Partly sunny, with a high near 56. North wind 7 to 9 mph.
Sunday Night
Mostly clear, with a low around 37. North wind around 6 mph becoming calm in the evening.
Washington's Birthday
Sunny, with a high near 60. Calm wind becoming south southeast around 6 mph in the morning.
Monday Night
Mostly cloudy, with a low around 43. South wind around 6 mph.
Tuesday
Partly sunny, with a high near 64. South wind 7 to 14 mph, with gusts as high as 23 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:
5:41 pm CST Feb 10, 2026
Forecast Valid:
6pm CST Feb 10, 2026-6pm CST Feb 17, 2026
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation