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

46°F

8°C

Humidity 54%
Wind Speed N 5 mph
Barometer 30.30 in (1026.1 mb)
Dewpoint 30°F (-1°C)
Visibility 10.00 mi
Wind Chill44°F (7°C)
Last update 11 Feb 12:52 pm CST
Extended Forecast for

Carbondale IL

  • This Afternoon

    This Afternoon: Sunny, with a high near 49. North wind 3 to 6 mph.

    High: 49 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 30. Calm wind.

    Low: 30 °F

    Mostly Clear

  • Thursday

    Thursday: Partly sunny, with a high near 51. Light east southeast wind.

    High: 51 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 32. Calm wind.

    Low: 32 °F

    Mostly Cloudy

  • Friday

    Friday: Sunny, with a high near 57. Calm wind becoming south southeast around 6 mph.

    High: 57 °F

    Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 37. Calm wind.

    Low: 37 °F

    Mostly Cloudy

  • Saturday

    Saturday: A 40 percent chance of showers. Cloudy, with a high near 53. Calm wind becoming southeast 5 to 7 mph in the morning.

    High: 53 °F

    Chance
    Showers

  • Saturday Night

    Saturday Night: Showers likely. Cloudy, with a low around 45. East wind 6 to 8 mph.

    Low: 45 °F

    Showers
    Likely

  • Sunday

    Sunday: A chance of showers before noon. Mostly sunny, with a high near 55. North wind 7 to 10 mph.

    High: 55 °F

    Chance
    Showers then
    Mostly Sunny

Detailed Forecast

This Afternoon
Sunny, with a high near 49. North wind 3 to 6 mph.
Tonight
Mostly clear, with a low around 30. Calm wind.
Thursday
Partly sunny, with a high near 51. Light east southeast wind.
Thursday Night
Mostly cloudy, with a low around 32. Calm wind.
Friday
Sunny, with a high near 57. Calm wind becoming south southeast around 6 mph.
Friday Night
Mostly cloudy, with a low around 37. Calm wind.
Saturday
A 40 percent chance of showers. Cloudy, with a high near 53. Calm wind becoming southeast 5 to 7 mph in the morning.
Saturday Night
Showers likely. Cloudy, with a low around 45. East wind 6 to 8 mph.
Sunday
A chance of showers before noon. Mostly sunny, with a high near 55. North wind 7 to 10 mph.
Sunday Night
Mostly clear, with a low around 37. North wind around 6 mph becoming calm in the evening.
Washington's Birthday
Mostly sunny, with a high near 60. Calm wind becoming south southeast 5 to 8 mph in the morning.
Monday Night
Mostly cloudy, with a low around 44. South wind around 7 mph.
Tuesday
Mostly cloudy, with a high near 64. South wind 7 to 15 mph, with gusts as high as 25 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:
12:32 pm CST Feb 11, 2026
Forecast Valid:
1pm CST Feb 11, 2026-6pm CST Feb 17, 2026
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation