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

50°F

10°C

Humidity 96%
Wind Speed Calm
Barometer 29.97 in (1014.7 mb)
Dewpoint 49°F (9°C)
Visibility 10.00 mi
Last update 7 Oct 2:52 am CDT
Extended Forecast for

Carbondale IL

  • Overnight

    Overnight: Clear, with a low around 49. Calm wind.

    Low: 49 °F

    Clear

  • Wednesday

    Wednesday: Sunny, with a high near 86. Calm wind becoming southwest 5 to 7 mph in the morning.

    High: 86 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Clear, with a low around 57. Light and variable wind.

    Low: 57 °F

    Clear

  • Thursday

    Thursday: Sunny, with a high near 84. Light and variable wind.

    High: 84 °F

    Sunny

  • Thursday Night

    Thursday Night: Clear, with a low around 55. Calm wind.

    Low: 55 °F

    Clear

  • Friday

    Friday: Sunny, with a high near 85. Calm wind becoming south southeast around 6 mph in the afternoon.

    High: 85 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 59. Light southeast wind.

    Low: 59 °F

    Mostly Clear

  • Saturday

    Saturday: A chance of showers after 1pm. Mostly sunny, with a high near 82. Light south wind becoming south southeast 5 to 9 mph in the morning.

    High: 82 °F

    Mostly Sunny
    then Chance
    Showers

  • Saturday Night

    Saturday Night: A chance of showers, with thunderstorms also possible after 1am. Partly cloudy, with a low around 58. East northeast wind 5 to 7 mph.

    Low: 58 °F

    Chance
    Showers then
    Chance
    T-storms

Detailed Forecast

Overnight
Clear, with a low around 49. Calm wind.
Wednesday
Sunny, with a high near 86. Calm wind becoming southwest 5 to 7 mph in the morning.
Wednesday Night
Clear, with a low around 57. Light and variable wind.
Thursday
Sunny, with a high near 84. Light and variable wind.
Thursday Night
Clear, with a low around 55. Calm wind.
Friday
Sunny, with a high near 85. Calm wind becoming south southeast around 6 mph in the afternoon.
Friday Night
Mostly clear, with a low around 59. Light southeast wind.
Saturday
A chance of showers after 1pm. Mostly sunny, with a high near 82. Light south wind becoming south southeast 5 to 9 mph in the morning.
Saturday Night
A chance of showers, with thunderstorms also possible after 1am. Partly cloudy, with a low around 58. East northeast wind 5 to 7 mph.
Sunday
A chance of showers. Partly sunny, with a high near 76. Northeast wind around 10 mph becoming northwest in the afternoon.
Sunday Night
Mostly cloudy, with a low around 57. Light and variable wind.
Columbus Day
Mostly sunny, with a high near 80. Calm wind becoming southwest 5 to 7 mph in the afternoon.
Monday Night
A slight chance of showers. Partly cloudy, with a low around 58. Light south wind.
Tuesday
A slight chance of showers. Mostly sunny, with a high near 81. Southwest wind 5 to 10 mph.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Carbondale IL
 37.72°N 89.2°W
Last Update:
1:26 am CDT Oct 7, 2026
Forecast Valid:
3am CDT Oct 7, 2026-6pm CDT Oct 13, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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