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

52°F

11°C

Humidity 97%
Wind Speed Calm
Barometer 30.17 in (1021.4 mb)
Dewpoint 51°F (11°C)
Visibility 10.00 mi
Last update 28 Aug 5:52 am CDT
Extended Forecast for

Carbondale IL

  • Today

    Today: Mostly sunny, with a high near 83. Calm wind becoming south southwest around 5 mph.

    High: 83 °F

    Mostly Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 58. Calm wind.

    Low: 58 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 87. Calm wind becoming east around 5 mph in the afternoon.

    High: 87 °F

    Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 60. East northeast wind around 5 mph becoming calm in the evening.

    Low: 60 °F

    Partly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 86. Northeast wind 3 to 8 mph.

    High: 86 °F

    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 59. Northeast wind 3 to 6 mph.

    Low: 59 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 84. East northeast wind 5 to 8 mph.

    High: 84 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 59. Northeast wind 5 to 7 mph becoming calm in the evening.

    Low: 59 °F

    Partly Cloudy

  • Labor Day

    Labor Day: Mostly sunny, with a high near 84. Northeast wind 3 to 6 mph.

    High: 84 °F

    Mostly Sunny

Detailed Forecast

Today
Mostly sunny, with a high near 83. Calm wind becoming south southwest around 5 mph.
Tonight
Mostly clear, with a low around 58. Calm wind.
Friday
Sunny, with a high near 87. Calm wind becoming east around 5 mph in the afternoon.
Friday Night
Partly cloudy, with a low around 60. East northeast wind around 5 mph becoming calm in the evening.
Saturday
Sunny, with a high near 86. Northeast wind 3 to 8 mph.
Saturday Night
Partly cloudy, with a low around 59. Northeast wind 3 to 6 mph.
Sunday
Mostly sunny, with a high near 84. East northeast wind 5 to 8 mph.
Sunday Night
Partly cloudy, with a low around 59. Northeast wind 5 to 7 mph becoming calm in the evening.
Labor Day
Mostly sunny, with a high near 84. Northeast wind 3 to 6 mph.
Monday Night
Partly cloudy, with a low around 60. East northeast wind around 5 mph becoming calm in the evening.
Tuesday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 83. Calm wind becoming east southeast around 5 mph in the afternoon.
Tuesday Night
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 61. Light and variable wind.
Wednesday
A slight chance of showers. Mostly sunny, with a high near 85. Calm wind becoming west 5 to 7 mph in the morning.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Carbondale IL
 37.72°N 89.2°W
Last Update:
6:16 am CDT Aug 28, 2025
Forecast Valid:
6am CDT Aug 28, 2025-6pm CDT Sep 3, 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