National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

Southern Illinois Airport (KMDH)

Lat: 37.78°NLon: 89.25°WElev: 400ft.

Overcast

77°F

25°C

Humidity 88%
Wind Speed NW 7 mph
Barometer 30.03 in (1016.3 mb)
Dewpoint 73°F (23°C)
Visibility 10.00 mi
Heat Index78°F (26°C)
Last update 14 Oct 11:52 am CDT
Extended Forecast for

Carbondale IL

  • This Afternoon

    This Afternoon: Showers and possibly a thunderstorm, mainly before 3pm, then a chance of showers and thunderstorms after 3pm. High near 81. Southwest wind around 5 mph becoming northwest. Chance of precipitation is 80%.

    High: 81 °F

    Showers

  • Tonight

    Tonight: A chance of showers and thunderstorms before midnight, then a slight chance of showers between midnight and 1am, then a chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 67. Calm wind. Chance of precipitation is 40%.

    Low: 67 °F

    Chance
    T-storms

  • Thursday

    Thursday: A 40 percent chance of showers and thunderstorms, mainly before noon. Cloudy through mid morning, then gradual clearing, with a high near 86. Light and variable wind becoming south southwest 5 to 10 mph in the morning. Winds could gust as high as 18 mph.

    High: 86 °F

    Chance
    Showers then
    Slight Chance
    T-storms

  • Thursday Night

    Thursday Night: A slight chance of showers and thunderstorms before 3am, then a chance of showers between 3am and 4am. Increasing clouds, with a low around 52. South southwest wind 6 to 16 mph becoming northwest after midnight. Winds could gust as high as 24 mph. Chance of precipitation is 40%.

    Low: 52 °F

    Slight Chance
    T-storms then
    Chance
    Showers

  • Friday

    Friday: Partly sunny, with a high near 61. Northwest wind around 18 mph, with gusts as high as 28 mph.

    High: 61 °F

    Partly Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 41. North northwest wind 10 to 15 mph, with gusts as high as 22 mph.

    Low: 41 °F

    Mostly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 61. North wind 6 to 10 mph.

    High: 61 °F

    Sunny

  • Saturday Night

    Saturday Night: Clear, with a low around 38. Calm wind.

    Low: 38 °F

    Clear

  • Sunday

    Sunday: Sunny, with a high near 68. Calm wind becoming south southeast around 5 mph in the afternoon.

    High: 68 °F

    Sunny

Detailed Forecast

This Afternoon
Showers and possibly a thunderstorm, mainly before 3pm, then a chance of showers and thunderstorms after 3pm. High near 81. Southwest wind around 5 mph becoming northwest. Chance of precipitation is 80%.
Tonight
A chance of showers and thunderstorms before midnight, then a slight chance of showers between midnight and 1am, then a chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 67. Calm wind. Chance of precipitation is 40%.
Thursday
A 40 percent chance of showers and thunderstorms, mainly before noon. Cloudy through mid morning, then gradual clearing, with a high near 86. Light and variable wind becoming south southwest 5 to 10 mph in the morning. Winds could gust as high as 18 mph.
Thursday Night
A slight chance of showers and thunderstorms before 3am, then a chance of showers between 3am and 4am. Increasing clouds, with a low around 52. South southwest wind 6 to 16 mph becoming northwest after midnight. Winds could gust as high as 24 mph. Chance of precipitation is 40%.
Friday
Partly sunny, with a high near 61. Northwest wind around 18 mph, with gusts as high as 28 mph.
Friday Night
Mostly cloudy, with a low around 41. North northwest wind 10 to 15 mph, with gusts as high as 22 mph.
Saturday
Sunny, with a high near 61. North wind 6 to 10 mph.
Saturday Night
Clear, with a low around 38. Calm wind.
Sunday
Sunny, with a high near 68. Calm wind becoming south southeast around 5 mph in the afternoon.
Sunday Night
Mostly clear, with a low around 45. Calm wind.
Monday
Mostly sunny, with a high near 69. Calm wind becoming south around 5 mph in the afternoon.
Monday Night
Partly cloudy, with a low around 49. Calm wind.
Tuesday
Mostly sunny, with a high near 74. Light and variable wind.
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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:
12:46 pm CDT Oct 14, 2026
Forecast Valid:
12pm CDT Oct 14, 2026-6pm CDT Oct 20, 2026
 
Forecast Discussion
 
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Additional Resources

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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