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

57°F

14°C

Humidity 96%
Wind Speed Calm
Barometer 30.11 in (1019.2 mb)
Dewpoint 56°F (13°C)
Visibility 7.00 mi
Last update 30 Aug 6:52 am CDT
Extended Forecast for

Carbondale IL

  • Today

    Today: Sunny, with a high near 86. Calm wind becoming east northeast 5 to 7 mph in the morning.

    High: 86 °F

    Sunny

  • Tonight

    Tonight: Mostly cloudy, with a low around 61. East northeast wind 3 to 6 mph.

    Low: 61 °F

    Mostly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 84. Northeast wind 3 to 8 mph.

    High: 84 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 58. Northeast wind around 6 mph becoming calm in the evening.

    Low: 58 °F

    Partly Cloudy

  • Labor Day

    Labor Day: Partly sunny, with a high near 82. East northeast wind 3 to 6 mph.

    High: 82 °F

    Partly Sunny

  • Monday Night

    Monday Night: A 20 percent chance of showers after 1am. Mostly cloudy, with a low around 60. North northeast wind around 5 mph becoming calm in the evening.

    Low: 60 °F

    Mostly Cloudy
    then Slight
    Chance
    Showers

  • Tuesday

    Tuesday: A 30 percent chance of showers, mainly after 1pm. Mostly sunny, with a high near 81. Light northeast wind.

    High: 81 °F

    Chance
    Showers

  • Tuesday Night

    Tuesday Night: A chance of showers, mainly before 1am. Partly cloudy, with a low around 58. Light and variable wind.

    Low: 58 °F

    Chance
    Showers

  • Wednesday

    Wednesday: A slight chance of showers after 1pm. Sunny, with a high near 84. Calm wind becoming west 5 to 7 mph in the morning.

    High: 84 °F

    Sunny then
    Slight Chance
    Showers

Detailed Forecast

Today
Sunny, with a high near 86. Calm wind becoming east northeast 5 to 7 mph in the morning.
Tonight
Mostly cloudy, with a low around 61. East northeast wind 3 to 6 mph.
Sunday
Mostly sunny, with a high near 84. Northeast wind 3 to 8 mph.
Sunday Night
Partly cloudy, with a low around 58. Northeast wind around 6 mph becoming calm in the evening.
Labor Day
Partly sunny, with a high near 82. East northeast wind 3 to 6 mph.
Monday Night
A 20 percent chance of showers after 1am. Mostly cloudy, with a low around 60. North northeast wind around 5 mph becoming calm in the evening.
Tuesday
A 30 percent chance of showers, mainly after 1pm. Mostly sunny, with a high near 81. Light northeast wind.
Tuesday Night
A chance of showers, mainly before 1am. Partly cloudy, with a low around 58. Light and variable wind.
Wednesday
A slight chance of showers after 1pm. Sunny, with a high near 84. Calm wind becoming west 5 to 7 mph in the morning.
Wednesday Night
A slight chance of showers before 1am. Partly cloudy, with a low around 51. North northwest wind around 6 mph.
Thursday
Mostly sunny, with a high near 72. North northwest wind 6 to 9 mph.
Thursday Night
Mostly clear, with a low around 48. North northwest wind around 6 mph becoming calm in the evening.
Friday
Sunny, with a high near 79. Calm wind becoming west 5 to 7 mph in the morning.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Carbondale IL
 37.72°N 89.23°W
Last Update:
6:31 am CDT Aug 30, 2025
Forecast Valid:
7am CDT Aug 30, 2025-6pm CDT Sep 5, 2025
 
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