Current conditions at

Southern Illinois Airport (KMDH)

Lat: 37.78°NLon: 89.25°WElev: 400ft.

N/A

Humidity NA
Wind Speed NA
Barometer NA
Dewpoint N/A
Visibility NA
Last update *** Not a current observation ***
Extended Forecast for

Carbondale IL

Heat Advisory July 19, 12:00pm until July 19, 07:00pm
Click here for hazard details and duration
Heat Advisory
  • Overnight

    Overnight: A 20 percent chance of showers and thunderstorms.  Mostly cloudy, with a low around 73. Calm wind.

    Low: 73 °F

    Slight Chance
    T-storms

  • Saturday

    Saturday: A 40 percent chance of showers and thunderstorms, mainly after 4pm.  Mostly cloudy, then gradually becoming sunny, with a high near 93. Heat index values as high as 107. Southwest wind 5 to 8 mph.

    High: 93 °F

    Chance
    T-storms

  • Saturday Night

    Saturday Night: A 30 percent chance of showers and thunderstorms before 8pm.  Mostly clear, with a low around 77. South southwest wind around 6 mph.

    Low: 77 °F

    Chance
    T-storms then
    Mostly Clear

  • Sunday

    Sunday: Mostly sunny, with a high near 95. Heat index values as high as 106. West southwest wind 6 to 8 mph.

    High: 95 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: A 20 percent chance of showers and thunderstorms.  Mostly clear, with a low around 77. South southwest wind 3 to 6 mph.

    Low: 77 °F

    Slight Chance
    T-storms

  • Monday

    Monday: A 20 percent chance of showers and thunderstorms after 1pm.  Mostly sunny, with a high near 93. West southwest wind 3 to 6 mph.

    High: 93 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Monday Night

    Monday Night: A 20 percent chance of showers and thunderstorms before 1am.  Mostly clear, with a low around 76. East southeast wind around 5 mph becoming calm  in the evening.

    Low: 76 °F

    Slight Chance
    T-storms

  • Tuesday

    Tuesday: Sunny, with a high near 93. Calm wind becoming south southeast around 5 mph in the afternoon.

    High: 93 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 77. Southeast wind around 5 mph becoming calm  in the evening.

    Low: 77 °F

    Mostly Clear

Detailed Forecast

Overnight
A 20 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 73. Calm wind.
Saturday
A 40 percent chance of showers and thunderstorms, mainly after 4pm. Mostly cloudy, then gradually becoming sunny, with a high near 93. Heat index values as high as 107. Southwest wind 5 to 8 mph.
Saturday Night
A 30 percent chance of showers and thunderstorms before 8pm. Mostly clear, with a low around 77. South southwest wind around 6 mph.
Sunday
Mostly sunny, with a high near 95. Heat index values as high as 106. West southwest wind 6 to 8 mph.
Sunday Night
A 20 percent chance of showers and thunderstorms. Mostly clear, with a low around 77. South southwest wind 3 to 6 mph.
Monday
A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 93. West southwest wind 3 to 6 mph.
Monday Night
A 20 percent chance of showers and thunderstorms before 1am. Mostly clear, with a low around 76. East southeast wind around 5 mph becoming calm in the evening.
Tuesday
Sunny, with a high near 93. Calm wind becoming south southeast around 5 mph in the afternoon.
Tuesday Night
Mostly clear, with a low around 77. Southeast wind around 5 mph becoming calm in the evening.
Wednesday
Sunny, with a high near 95. Calm wind becoming south southwest around 6 mph in the afternoon.
Wednesday Night
Mostly clear, with a low around 77. South wind around 5 mph becoming calm in the evening.
Thursday
Sunny, with a high near 96. South southwest wind 3 to 7 mph.
Thursday Night
Mostly clear, with a low around 77. South wind 3 to 6 mph.
Friday
A slight chance of showers and thunderstorms. Sunny, with a high near 95. South southwest wind 3 to 7 mph.
Basemap Options
Click map to change the forecast location
Loading map...

ABOUT THIS FORECAST

 
Point Forecast:
Carbondale IL
 37.72°N 89.23°W
3:01 am CDT Jul 19, 2025
3am CDT Jul 19, 2025-6pm CDT Jul 25, 2025
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database