National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

Southern Illinois Airport (KMDH)

Lat: 37.78°NLon: 89.25°WElev: 400ft.

Fair

81°F

27°C

Humidity 51%
Wind Speed SW 6 mph
Barometer 30.09 in (1018.7 mb)
Dewpoint 61°F (16°C)
Visibility 10.00 mi
Heat Index82°F (28°C)
Last update 24 Jun 11:52 am CDT
Extended Forecast for

Carbondale IL

  • Today

    Today: Mostly sunny, with a high near 84. South wind 3 to 6 mph.

    High: 84 °F

    Mostly Sunny

  • Tonight

    Tonight: A 30 percent chance of showers and thunderstorms, mainly after 5am. Mostly cloudy, with a low around 68. South wind around 6 mph becoming calm in the evening.

    Low: 68 °F

    Chance
    T-storms

  • Thursday

    Thursday: A chance of showers and thunderstorms before 11am, then a chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 88. Calm wind becoming southwest around 6 mph in the afternoon. Chance of precipitation is 40%.

    High: 88 °F

    Chance
    Showers then
    Chance
    T-storms

  • Thursday Night

    Thursday Night: Showers and thunderstorms likely before 4am, then showers likely and possibly a thunderstorm between 4am and 5am, then a chance of showers and thunderstorms after 5am. Mostly cloudy, with a low around 70. Light south wind. Chance of precipitation is 60%.

    Low: 70 °F

    Showers
    Likely

  • Friday

    Friday: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 7am. Mostly cloudy, with a high near 87. Light south wind becoming south southwest 5 to 10 mph in the morning. Chance of precipitation is 70%.

    High: 87 °F

    Showers
    Likely

  • Friday Night

    Friday Night: Showers likely and possibly a thunderstorm. Partly cloudy, with a low around 72. South southwest wind 3 to 8 mph. Chance of precipitation is 60%.

    Low: 72 °F

    Showers
    Likely

  • Saturday

    Saturday: Showers likely and possibly a thunderstorm before 1pm, then a chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 90. Southwest wind 5 to 7 mph. Chance of precipitation is 60%.

    High: 90 °F

    Showers
    Likely

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 74. South wind 5 to 7 mph.

    Low: 74 °F

    Partly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 95. South southwest wind 7 to 11 mph, with gusts as high as 18 mph.

    High: 95 °F

    Sunny

Detailed Forecast

Today
Mostly sunny, with a high near 84. South wind 3 to 6 mph.
Tonight
A 30 percent chance of showers and thunderstorms, mainly after 5am. Mostly cloudy, with a low around 68. South wind around 6 mph becoming calm in the evening.
Thursday
A chance of showers and thunderstorms before 11am, then a chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 88. Calm wind becoming southwest around 6 mph in the afternoon. Chance of precipitation is 40%.
Thursday Night
Showers and thunderstorms likely before 4am, then showers likely and possibly a thunderstorm between 4am and 5am, then a chance of showers and thunderstorms after 5am. Mostly cloudy, with a low around 70. Light south wind. Chance of precipitation is 60%.
Friday
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 7am. Mostly cloudy, with a high near 87. Light south wind becoming south southwest 5 to 10 mph in the morning. Chance of precipitation is 70%.
Friday Night
Showers likely and possibly a thunderstorm. Partly cloudy, with a low around 72. South southwest wind 3 to 8 mph. Chance of precipitation is 60%.
Saturday
Showers likely and possibly a thunderstorm before 1pm, then a chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 90. Southwest wind 5 to 7 mph. Chance of precipitation is 60%.
Saturday Night
Partly cloudy, with a low around 74. South wind 5 to 7 mph.
Sunday
Sunny, with a high near 95. South southwest wind 7 to 11 mph, with gusts as high as 18 mph.
Sunday Night
Clear, with a low around 76. South southwest wind 5 to 10 mph.
Monday
Sunny and hot, with a high near 97. South southwest wind 5 to 10 mph.
Monday Night
Mostly clear, with a low around 77. South wind 5 to 9 mph becoming calm after midnight.
Tuesday
Sunny and hot, with a high near 99. Calm wind becoming south southwest around 6 mph in the afternoon.
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ABOUT THIS FORECAST

 
Point Forecast:
Carbondale IL
 37.72°N 89.23°W
Last Update:
11:36 am CDT Jun 24, 2026
Forecast Valid:
11am CDT Jun 24, 2026-6pm CDT Jun 30, 2026
 
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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