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 and Breezy

78°F

26°C

Humidity 28%
Wind Speed S 24 G 33 mph
Barometer 30.06 in (1017.7 mb)
Dewpoint 42°F (6°C)
Visibility 10.00 mi
Heat Index78°F (26°C)
Last update 21 Apr 3:52 pm CDT
Extended Forecast for

Carbondale IL

  • This Afternoon

    This Afternoon: Mostly sunny, with a high near 78. South southwest wind around 15 mph, with gusts as high as 24 mph.

    High: 78 °F

    Mostly Sunny

  • Tonight

    Tonight: Clear, with a low around 54. Southwest wind 6 to 10 mph, with gusts as high as 21 mph.

    Low: 54 °F

    Clear

  • Wednesday

    Wednesday: Sunny, with a high near 78. Southwest wind 6 to 10 mph, with gusts as high as 18 mph.

    High: 78 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Clear, with a low around 57. South wind around 6 mph.

    Low: 57 °F

    Clear

  • Thursday

    Thursday: Sunny, with a high near 81. South wind 6 to 15 mph, with gusts as high as 24 mph.

    High: 81 °F

    Sunny

  • Thursday Night

    Thursday Night: A 30 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 63. South wind around 10 mph, with gusts as high as 20 mph.

    Low: 63 °F

    Partly Cloudy
    then Chance
    Showers

  • Friday

    Friday: Showers and possibly a thunderstorm. High near 77. South wind 10 to 13 mph, with gusts as high as 21 mph. Chance of precipitation is 90%.

    High: 77 °F

    Showers

  • Friday Night

    Friday Night: Showers likely and possibly a thunderstorm before 1am, then a chance of showers. Mostly cloudy, with a low around 57. South southwest wind around 5 mph becoming calm in the evening.

    Low: 57 °F

    Showers
    Likely

  • Saturday

    Saturday: A slight chance of showers. Mostly sunny, with a high near 78. North northeast wind 3 to 7 mph.

    High: 78 °F

    Slight Chance
    Showers

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 78. South southwest wind around 15 mph, with gusts as high as 24 mph.
Tonight
Clear, with a low around 54. Southwest wind 6 to 10 mph, with gusts as high as 21 mph.
Wednesday
Sunny, with a high near 78. Southwest wind 6 to 10 mph, with gusts as high as 18 mph.
Wednesday Night
Clear, with a low around 57. South wind around 6 mph.
Thursday
Sunny, with a high near 81. South wind 6 to 15 mph, with gusts as high as 24 mph.
Thursday Night
A 30 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 63. South wind around 10 mph, with gusts as high as 20 mph.
Friday
Showers and possibly a thunderstorm. High near 77. South wind 10 to 13 mph, with gusts as high as 21 mph. Chance of precipitation is 90%.
Friday Night
Showers likely and possibly a thunderstorm before 1am, then a chance of showers. Mostly cloudy, with a low around 57. South southwest wind around 5 mph becoming calm in the evening.
Saturday
A slight chance of showers. Mostly sunny, with a high near 78. North northeast wind 3 to 7 mph.
Saturday Night
A slight chance of showers. Partly cloudy, with a low around 54. North northeast wind around 5 mph becoming calm in the evening.
Sunday
A slight chance of showers and thunderstorms. Partly sunny, with a high near 79. East wind 3 to 7 mph.
Sunday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 60. East southeast wind 6 to 9 mph.
Monday
Showers and thunderstorms likely. Partly sunny, with a high near 80. South wind 11 to 14 mph, with gusts as high as 22 mph.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Carbondale IL
 37.72°N 89.2°W
Last Update:
1:26 pm CDT Apr 21, 2026
Forecast Valid:
4pm CDT Apr 21, 2026-6pm CDT Apr 27, 2026
 
Forecast Discussion
 
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

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation