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.

N/A

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

2 Miles SSW Carbondale IL

Flood Watch until August 20, 07:00am
Click here for hazard details and duration
Flood Watch
  •  
    Flood Watch until August 20, 07:00am

    NOW until 7:00am Thu

    Flood Watch

  • Tonight

    Low: 69 °F

    Showers
    Likely

  • Thursday

    Thursday: A 30 percent chance of showers and thunderstorms after 5pm. Partly sunny, with a high near 86. Calm wind becoming north around 5 mph in the afternoon.

    High: 86 °F

    Partly Sunny
    then Chance
    Showers

  • Thursday Night

    Thursday Night: Increasing clouds, with a low around 67. Calm wind.

    Low: 67 °F

    Increasing
    Clouds

  • Friday

    Friday: Mostly cloudy, then gradually becoming sunny, with a high near 87. Light north wind.

    High: 87 °F

    Decreasing
    Clouds

  • Friday Night

    Friday Night: Mostly clear, with a low around 67. Calm wind.

    Low: 67 °F

    Mostly Clear

  • Saturday

    Saturday: Mostly sunny, with a high near 88. Calm wind becoming northwest 5 to 7 mph in the afternoon.

    High: 88 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 65. Calm wind.

    Low: 65 °F

    Mostly Clear

  • Sunday

    Sunday: Mostly sunny, with a high near 86. Calm wind becoming north around 6 mph in the afternoon.

    High: 86 °F

    Mostly Sunny

Detailed Forecast

Tonight
Showers likely and possibly a thunderstorm before 1am, then a chance of showers and thunderstorms, mainly between 1am and 5am. Mostly cloudy, with a low around 69. Light south wind. Chance of precipitation is 70%.
Thursday
A 30 percent chance of showers and thunderstorms after 5pm. Partly sunny, with a high near 86. Calm wind becoming north around 5 mph in the afternoon.
Thursday Night
Increasing clouds, with a low around 67. Calm wind.
Friday
Mostly cloudy, then gradually becoming sunny, with a high near 87. Light north wind.
Friday Night
Mostly clear, with a low around 67. Calm wind.
Saturday
Mostly sunny, with a high near 88. Calm wind becoming northwest 5 to 7 mph in the afternoon.
Saturday Night
Mostly clear, with a low around 65. Calm wind.
Sunday
Mostly sunny, with a high near 86. Calm wind becoming north around 6 mph in the afternoon.
Sunday Night
A slight chance of showers. Partly cloudy, with a low around 65. Light northeast wind.
Monday
A slight chance of showers before 1pm. Mostly sunny, with a high near 86. Calm wind becoming southeast around 5 mph in the morning.
Monday Night
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 67. East southeast wind 3 to 5 mph.
Tuesday
Mostly sunny, with a high near 89. South southeast wind 3 to 7 mph.
Tuesday Night
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 68. Light east wind.
Wednesday
Mostly sunny, with a high near 90. Calm wind becoming northwest around 6 mph in the morning.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles SSW Carbondale IL
 37.7°N 89.23°W
Last Update:
11:06 pm CDT Aug 19, 2026
Forecast Valid:
11pm CDT Aug 19, 2026-6pm CDT Aug 26, 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