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

77°F

25°C

Humidity 47%
Wind Speed SW 17 G 22 mph
Barometer 29.99 in (1015.2 mb)
Dewpoint 55°F (13°C)
Visibility 10.00 mi
Heat Index79°F (26°C)
Last update 22 Apr 5:52 pm CDT
Extended Forecast for

Carbondale IL

  • Tonight

    Tonight: Clear, with a low around 56. South southwest wind 5 to 9 mph.

    Low: 56 °F

    Clear

  • Thursday

    Thursday: Mostly sunny, with a high near 82. South wind 6 to 11 mph increasing to 12 to 17 mph in the afternoon. Winds could gust as high as 25 mph.

    High: 82 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: A chance of showers between 1am and 4am, then a chance of showers and thunderstorms after 4am. Partly cloudy, with a low around 63. South wind 10 to 13 mph, with gusts as high as 24 mph. Chance of precipitation is 30%.

    Low: 63 °F

    Mostly Clear
    then Chance
    Showers

  • Friday

    Friday: Showers and possibly a thunderstorm. High near 76. South southwest wind 10 to 13 mph, with gusts as high as 22 mph. Chance of precipitation is 90%.

    High: 76 °F

    Showers then
    T-storms

  • Friday Night

    Friday Night: Showers and thunderstorms likely before 7pm, then showers likely and possibly a thunderstorm between 7pm and 10pm, then showers likely after 10pm. Mostly cloudy, with a low around 56. West southwest wind around 6 mph becoming light and variable. Chance of precipitation is 60%.

    Low: 56 °F

    T-storms
    Likely then
    Showers
    Likely

  • Saturday

    Saturday: Mostly sunny, with a high near 77. Northeast wind around 7 mph.

    High: 77 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: A 20 percent chance of showers after 1am. Mostly clear, with a low around 55. Northeast wind around 5 mph becoming calm in the evening.

    Low: 55 °F

    Mostly Clear
    then Slight
    Chance
    Showers

  • Sunday

    Sunday: A slight chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 76. East southeast wind 5 to 7 mph.

    High: 76 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Sunday Night

    Sunday Night: A chance of showers and thunderstorms, mainly after 1am. Mostly cloudy, with a low around 63. East southeast wind 7 to 10 mph, with gusts as high as 18 mph.

    Low: 63 °F

    Chance
    T-storms

Detailed Forecast

Tonight
Clear, with a low around 56. South southwest wind 5 to 9 mph.
Thursday
Mostly sunny, with a high near 82. South wind 6 to 11 mph increasing to 12 to 17 mph in the afternoon. Winds could gust as high as 25 mph.
Thursday Night
A chance of showers between 1am and 4am, then a chance of showers and thunderstorms after 4am. Partly cloudy, with a low around 63. South wind 10 to 13 mph, with gusts as high as 24 mph. Chance of precipitation is 30%.
Friday
Showers and possibly a thunderstorm. High near 76. South southwest wind 10 to 13 mph, with gusts as high as 22 mph. Chance of precipitation is 90%.
Friday Night
Showers and thunderstorms likely before 7pm, then showers likely and possibly a thunderstorm between 7pm and 10pm, then showers likely after 10pm. Mostly cloudy, with a low around 56. West southwest wind around 6 mph becoming light and variable. Chance of precipitation is 60%.
Saturday
Mostly sunny, with a high near 77. Northeast wind around 7 mph.
Saturday Night
A 20 percent chance of showers after 1am. Mostly clear, with a low around 55. Northeast wind around 5 mph becoming calm in the evening.
Sunday
A slight chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 76. East southeast wind 5 to 7 mph.
Sunday Night
A chance of showers and thunderstorms, mainly after 1am. Mostly cloudy, with a low around 63. East southeast wind 7 to 10 mph, with gusts as high as 18 mph.
Monday
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm. Partly sunny, with a high near 81. Breezy, with a south wind 13 to 20 mph, with gusts as high as 31 mph.
Monday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 54. West wind 7 to 16 mph, with gusts as high as 24 mph.
Tuesday
Sunny, with a high near 74. West northwest wind 6 to 8 mph.
Tuesday Night
Mostly clear, with a low around 52. Light north northwest wind.
Wednesday
A chance of showers and thunderstorms. Mostly sunny, with a high near 73. North wind 3 to 7 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:
5:37 pm CDT Apr 22, 2026
Forecast Valid:
6pm CDT Apr 22, 2026-6pm CDT Apr 29, 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