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

Southern Illinois Airport (KMDH)

Lat: 37.78°NLon: 89.25°WElev: 400ft.

Fair

66°F

19°C

Humidity 68%
Wind Speed S 9 mph
Barometer 29.95 in (1013.8 mb)
Dewpoint 55°F (13°C)
Visibility 10.00 mi
Last update 1 Apr 1:52 am CDT
Extended Forecast for

Carbondale IL

  • Overnight

    Overnight: Partly cloudy, with a steady temperature around 68. South southwest wind around 10 mph, with gusts as high as 21 mph.

    Low: 68 °F

    Partly Cloudy

  • Wednesday

    Wednesday: A 30 percent chance of showers and thunderstorms, mainly before 2pm. Partly sunny, with a high near 83. South southwest wind 7 to 11 mph, with gusts as high as 18 mph.

    High: 83 °F

    Chance
    Showers then
    Chance
    T-storms

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 67. South wind 8 to 15 mph, with gusts as high as 25 mph.

    Low: 67 °F

    Partly Cloudy

  • Thursday

    Thursday: A slight chance of showers, then showers likely and possibly a thunderstorm after 1pm. Mostly cloudy, with a high near 80. Breezy, with a south wind 17 to 22 mph, with gusts as high as 34 mph. Chance of precipitation is 60%.

    High: 80 °F

    Breezy.
    Slight Chance
    Showers then
    Showers
    Likely

  • Thursday Night

    Thursday Night: Showers and possibly a thunderstorm. Low around 64. South southwest wind 10 to 17 mph, with gusts as high as 28 mph. Chance of precipitation is 80%.

    Low: 64 °F

    Showers

  • Friday

    Friday: Showers likely before 7am, then showers likely and possibly a thunderstorm between 7am and 1pm, then a chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 81. South wind 9 to 14 mph, with gusts as high as 23 mph. Chance of precipitation is 60%.

    High: 81 °F

    Showers
    Likely

  • Friday Night

    Friday Night: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 59. South wind 11 to 13 mph, with gusts as high as 22 mph. Chance of precipitation is 70%.

    Low: 59 °F

    Chance
    Showers then
    Showers
    Likely

  • Saturday

    Saturday: Showers and possibly a thunderstorm. Mostly cloudy, with a high near 71. South wind 13 to 15 mph becoming west northwest in the afternoon. Winds could gust as high as 24 mph.

    High: 71 °F

    Showers

  • Saturday Night

    Saturday Night: A chance of showers, mainly before 1am. Partly cloudy, with a low around 39. Northwest wind 11 to 13 mph, with gusts as high as 21 mph.

    Low: 39 °F

    Chance
    Showers

Detailed Forecast

Overnight
Partly cloudy, with a steady temperature around 68. South southwest wind around 10 mph, with gusts as high as 21 mph.
Wednesday
A 30 percent chance of showers and thunderstorms, mainly before 2pm. Partly sunny, with a high near 83. South southwest wind 7 to 11 mph, with gusts as high as 18 mph.
Wednesday Night
Partly cloudy, with a low around 67. South wind 8 to 15 mph, with gusts as high as 25 mph.
Thursday
A slight chance of showers, then showers likely and possibly a thunderstorm after 1pm. Mostly cloudy, with a high near 80. Breezy, with a south wind 17 to 22 mph, with gusts as high as 34 mph. Chance of precipitation is 60%.
Thursday Night
Showers and possibly a thunderstorm. Low around 64. South southwest wind 10 to 17 mph, with gusts as high as 28 mph. Chance of precipitation is 80%.
Friday
Showers likely before 7am, then showers likely and possibly a thunderstorm between 7am and 1pm, then a chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 81. South wind 9 to 14 mph, with gusts as high as 23 mph. Chance of precipitation is 60%.
Friday Night
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 59. South wind 11 to 13 mph, with gusts as high as 22 mph. Chance of precipitation is 70%.
Saturday
Showers and possibly a thunderstorm. Mostly cloudy, with a high near 71. South wind 13 to 15 mph becoming west northwest in the afternoon. Winds could gust as high as 24 mph.
Saturday Night
A chance of showers, mainly before 1am. Partly cloudy, with a low around 39. Northwest wind 11 to 13 mph, with gusts as high as 21 mph.
Sunday
Sunny, with a high near 56. North northwest wind 11 to 14 mph, with gusts as high as 21 mph.
Sunday Night
Mostly clear, with a low around 36. North wind 5 to 10 mph.
Monday
Sunny, with a high near 62. Northeast wind 5 to 8 mph.
Monday Night
Mostly clear, with a low around 40. East wind around 6 mph becoming south southwest after midnight.
Tuesday
Sunny, with a high near 69. South southwest wind 6 to 10 mph becoming north in the afternoon.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Carbondale IL
 37.72°N 89.23°W
Last Update:
1:48 am CDT Apr 1, 2026
Forecast Valid:
2am CDT Apr 1, 2026-6pm CDT Apr 7, 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