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.

Mostly Cloudy

74°F

23°C

Humidity 88%
Wind Speed S 3 mph
Barometer 29.96 in (1013.9 mb)
Dewpoint 70°F (21°C)
Visibility 9.00 mi
Last update 14 Oct 3:52 am CDT
Extended Forecast for

Carbondale IL

  • Overnight

    Overnight: A 10 percent chance of showers and thunderstorms after 5am. Mostly cloudy, with a low around 73. Calm wind.

    Low: 73 °F

    Slight Chance
    T-storms

  • Wednesday

    Wednesday: Showers and thunderstorms before 2pm, then showers likely and possibly a thunderstorm between 2pm and 3pm, then a chance of showers and thunderstorms after 3pm. High near 81. West southwest wind around 5 mph becoming light and variable in the afternoon. Chance of precipitation is 90%.

    High: 81 °F

    Showers

  • Wednesday Night

    Wednesday Night: A chance of showers and thunderstorms before 11pm, then a chance of showers between 11pm 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
    Showers then
    Chance
    T-storms

  • Thursday

    Thursday: A 40 percent chance of showers and thunderstorms, mainly before 4pm. Mostly cloudy, then gradually becoming sunny, with a high near 86. Light and variable wind becoming south southwest 5 to 10 mph in the morning.

    High: 86 °F

    Chance
    Showers then
    Chance
    T-storms

  • Thursday Night

    Thursday Night: A chance of showers and thunderstorms. Partly cloudy, with a low around 52. South southwest wind 6 to 16 mph becoming northwest after midnight. Winds could gust as high as 25 mph. Chance of precipitation is 40%.

    Low: 52 °F

    Chance
    Showers

  • Friday

    Friday: Partly sunny, with a high near 61. Breezy, with a north northwest wind 18 to 21 mph, with gusts as high as 30 mph.

    High: 61 °F

    Partly Sunny
    and Breezy

  • Friday Night

    Friday Night: Partly cloudy, with a low around 41. North wind 7 to 14 mph, with gusts as high as 21 mph.

    Low: 41 °F

    Partly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 61. Northeast wind 5 to 7 mph.

    High: 61 °F

    Sunny

  • Saturday Night

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

    Low: 38 °F

    Clear

Detailed Forecast

Overnight
A 10 percent chance of showers and thunderstorms after 5am. Mostly cloudy, with a low around 73. Calm wind.
Wednesday
Showers and thunderstorms before 2pm, then showers likely and possibly a thunderstorm between 2pm and 3pm, then a chance of showers and thunderstorms after 3pm. High near 81. West southwest wind around 5 mph becoming light and variable in the afternoon. Chance of precipitation is 90%.
Wednesday Night
A chance of showers and thunderstorms before 11pm, then a chance of showers between 11pm 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 4pm. Mostly cloudy, then gradually becoming sunny, with a high near 86. Light and variable wind becoming south southwest 5 to 10 mph in the morning.
Thursday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 52. South southwest wind 6 to 16 mph becoming northwest after midnight. Winds could gust as high as 25 mph. Chance of precipitation is 40%.
Friday
Partly sunny, with a high near 61. Breezy, with a north northwest wind 18 to 21 mph, with gusts as high as 30 mph.
Friday Night
Partly cloudy, with a low around 41. North wind 7 to 14 mph, with gusts as high as 21 mph.
Saturday
Sunny, with a high near 61. Northeast wind 5 to 7 mph.
Saturday Night
Clear, with a low around 38. Calm wind.
Sunday
Sunny, with a high near 68. Calm wind becoming south 5 to 7 mph in the morning.
Sunday Night
Partly cloudy, with a low around 45. Light south southeast wind.
Monday
Mostly sunny, with a high near 69. Calm wind becoming south around 6 mph in the morning.
Monday Night
Partly cloudy, with a low around 49. Calm wind.
Tuesday
Mostly sunny, with a high near 74. Calm wind becoming south southeast around 5 mph in the afternoon.
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ABOUT THIS FORECAST

 
Point Forecast:
Carbondale IL
 37.72°N 89.23°W
Last Update:
3:51 am CDT Oct 14, 2026
Forecast Valid:
4am CDT Oct 14, 2026-6pm CDT Oct 20, 2026
 
Forecast Discussion
 
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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