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

54°F

12°C

Humidity 100%
Wind Speed Calm
Barometer 30.13 in (1020.2 mb)
Dewpoint 54°F (12°C)
Visibility 0.50 mi
Last update 5 Oct 5:52 am CDT
Extended Forecast for

Carbondale IL

  • Today

    Today: Sunny, with a high near 85. Light south southeast wind becoming south 5 to 10 mph in the morning.

    High: 85 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 65. South southeast wind 5 to 7 mph.

    Low: 65 °F

    Mostly Clear

  • Monday

    Monday: A chance of showers, with thunderstorms also possible after 10am. Mostly sunny, with a high near 81. South wind 3 to 7 mph. Chance of precipitation is 50%.

    High: 81 °F

    Chance
    Showers then
    Chance
    T-storms

  • Monday Night

    Monday Night: A chance of showers before 10pm, then a chance of showers and thunderstorms between 10pm and 1am, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 66. Light southeast wind. Chance of precipitation is 60%.

    Low: 66 °F

    Showers
    Likely

  • Tuesday

    Tuesday: Showers likely and possibly a thunderstorm before 1pm, then a chance of showers and thunderstorms after 1pm. Mostly cloudy, with a high near 78. Calm wind becoming north northwest around 6 mph in the afternoon. Chance of precipitation is 60%.

    High: 78 °F

    Showers
    Likely

  • Tuesday Night

    Tuesday Night: A slight chance of showers before 10pm, then a slight chance of showers and thunderstorms between 10pm and 1am. Mostly cloudy, with a low around 58. North wind around 7 mph. Chance of precipitation is 20%.

    Low: 58 °F

    Slight Chance
    T-storms

  • Wednesday

    Wednesday: Mostly sunny, with a high near 74. Northeast wind around 9 mph.

    High: 74 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 53. East northeast wind 3 to 6 mph.

    Low: 53 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 76. East northeast wind around 6 mph.

    High: 76 °F

    Sunny

Detailed Forecast

Today
Sunny, with a high near 85. Light south southeast wind becoming south 5 to 10 mph in the morning.
Tonight
Mostly clear, with a low around 65. South southeast wind 5 to 7 mph.
Monday
A chance of showers, with thunderstorms also possible after 10am. Mostly sunny, with a high near 81. South wind 3 to 7 mph. Chance of precipitation is 50%.
Monday Night
A chance of showers before 10pm, then a chance of showers and thunderstorms between 10pm and 1am, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 66. Light southeast wind. Chance of precipitation is 60%.
Tuesday
Showers likely and possibly a thunderstorm before 1pm, then a chance of showers and thunderstorms after 1pm. Mostly cloudy, with a high near 78. Calm wind becoming north northwest around 6 mph in the afternoon. Chance of precipitation is 60%.
Tuesday Night
A slight chance of showers before 10pm, then a slight chance of showers and thunderstorms between 10pm and 1am. Mostly cloudy, with a low around 58. North wind around 7 mph. Chance of precipitation is 20%.
Wednesday
Mostly sunny, with a high near 74. Northeast wind around 9 mph.
Wednesday Night
Mostly clear, with a low around 53. East northeast wind 3 to 6 mph.
Thursday
Sunny, with a high near 76. East northeast wind around 6 mph.
Thursday Night
Mostly clear, with a low around 52. Light east wind.
Friday
Sunny, with a high near 79. Calm wind becoming south around 6 mph in the afternoon.
Friday Night
Mostly clear, with a low around 56. Light south southeast wind.
Saturday
Sunny, with a high near 80. Calm wind becoming southeast around 6 mph in the morning.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Carbondale IL
 37.72°N 89.23°W
Last Update:
5:01 am CDT Oct 5, 2025
Forecast Valid:
6am CDT Oct 5, 2025-6pm CDT Oct 11, 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