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.

Mostly Cloudy and Breezy

66°F

19°C

Humidity 73%
Wind Speed S 21 mph
Barometer 30.03 in (1016.8 mb)
Dewpoint 57°F (14°C)
Visibility 10.00 mi
Last update 3 Mar 6:52 pm CST
Extended Forecast for

Carbondale IL

  • Tonight

    Tonight: A chance of showers before 3am, then a chance of showers and thunderstorms between 3am and 4am, then showers likely and possibly a thunderstorm after 4am. Mostly cloudy, with a low around 57. South wind 5 to 9 mph. Chance of precipitation is 60%.

    Low: 57 °F

    Slight Chance
    Showers then
    Showers
    Likely

  • Wednesday

    Wednesday: Showers and thunderstorms likely, then showers and possibly a thunderstorm after 3pm. High near 72. South southwest wind 5 to 10 mph. Chance of precipitation is 80%.

    High: 72 °F

    Showers

  • Wednesday Night

    Wednesday Night: Showers and possibly a thunderstorm. Low around 59. South southwest wind 6 to 9 mph. Chance of precipitation is 90%.

    Low: 59 °F

    Showers

  • Thursday

    Thursday: Showers and possibly a thunderstorm before 9am, then showers between 9am and noon, then showers likely and possibly a thunderstorm after noon. High near 71. Southwest wind 7 to 11 mph. Chance of precipitation is 90%.

    High: 71 °F

    Showers then
    Showers
    Likely

  • Thursday Night

    Thursday Night: A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 59. South wind around 7 mph.

    Low: 59 °F

    Chance
    Showers

  • Friday

    Friday: A 20 percent chance of showers. Partly sunny, with a high near 79. South wind 8 to 16 mph, with gusts as high as 25 mph.

    High: 79 °F

    Slight Chance
    Showers

  • Friday Night

    Friday Night: A slight chance of showers, then showers likely and possibly a thunderstorm after midnight. Mostly cloudy, with a low around 62. South wind 10 to 13 mph, with gusts as high as 23 mph. Chance of precipitation is 70%.

    Low: 62 °F

    Slight Chance
    Showers then
    Showers
    Likely

  • Saturday

    Saturday: Showers and possibly a thunderstorm before noon, then a chance of showers. Mostly cloudy, with a high near 71. South southwest wind 6 to 11 mph becoming west northwest in the afternoon. Winds could gust as high as 20 mph.

    High: 71 °F

    Showers

  • Saturday Night

    Saturday Night: A slight chance of showers. Partly cloudy, with a low around 47. West northwest wind around 5 mph becoming calm in the evening.

    Low: 47 °F

    Slight Chance
    Showers

Detailed Forecast

Tonight
A chance of showers before 3am, then a chance of showers and thunderstorms between 3am and 4am, then showers likely and possibly a thunderstorm after 4am. Mostly cloudy, with a low around 57. South wind 5 to 9 mph. Chance of precipitation is 60%.
Wednesday
Showers and thunderstorms likely, then showers and possibly a thunderstorm after 3pm. High near 72. South southwest wind 5 to 10 mph. Chance of precipitation is 80%.
Wednesday Night
Showers and possibly a thunderstorm. Low around 59. South southwest wind 6 to 9 mph. Chance of precipitation is 90%.
Thursday
Showers and possibly a thunderstorm before 9am, then showers between 9am and noon, then showers likely and possibly a thunderstorm after noon. High near 71. Southwest wind 7 to 11 mph. Chance of precipitation is 90%.
Thursday Night
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 59. South wind around 7 mph.
Friday
A 20 percent chance of showers. Partly sunny, with a high near 79. South wind 8 to 16 mph, with gusts as high as 25 mph.
Friday Night
A slight chance of showers, then showers likely and possibly a thunderstorm after midnight. Mostly cloudy, with a low around 62. South wind 10 to 13 mph, with gusts as high as 23 mph. Chance of precipitation is 70%.
Saturday
Showers and possibly a thunderstorm before noon, then a chance of showers. Mostly cloudy, with a high near 71. South southwest wind 6 to 11 mph becoming west northwest in the afternoon. Winds could gust as high as 20 mph.
Saturday Night
A slight chance of showers. Partly cloudy, with a low around 47. West northwest wind around 5 mph becoming calm in the evening.
Sunday
A slight chance of showers. Mostly sunny, with a high near 67. Calm wind becoming southwest 5 to 7 mph in the morning.
Sunday Night
A slight chance of showers. Mostly clear, with a low around 51. South southwest wind around 5 mph.
Monday
A slight chance of showers. Sunny, with a high near 75. South southwest wind 5 to 10 mph.
Monday Night
A chance of showers and thunderstorms. Mostly clear, with a low around 59. South southwest wind 8 to 10 mph, with gusts as high as 20 mph.
Tuesday
A chance of showers and thunderstorms. Mostly cloudy, with a high near 77. South southwest wind 10 to 16 mph, with gusts as high as 25 mph.
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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:
6:17 pm CST Mar 3, 2026
Forecast Valid:
6pm CST Mar 3, 2026-6pm CDT Mar 10, 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