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

84°F

29°C

Humidity 34%
Wind Speed S 21 G 37 mph
Barometer 29.92 in (1012.8 mb)
Dewpoint 53°F (12°C)
Visibility 10.00 mi
Heat Index82°F (28°C)
Last update 31 Mar 2:52 pm CDT
Extended Forecast for

Carbondale IL

  • This Afternoon

    This Afternoon: Partly sunny, with a high near 83. South southwest wind around 18 mph, with gusts as high as 30 mph.

    High: 83 °F

    Partly Sunny

  • Tonight

    Tonight: A 20 percent chance of showers after midnight. Partly cloudy, with a low around 65. South southwest wind 10 to 14 mph, with gusts as high as 22 mph.

    Low: 65 °F

    Partly Cloudy
    then Slight
    Chance
    Showers

  • Wednesday

    Wednesday: A chance of showers and thunderstorms before 4pm, then a slight chance of showers. Partly sunny, with a high near 83. South southwest wind 8 to 11 mph, with gusts as high as 20 mph. Chance of precipitation is 50%.

    High: 83 °F

    Chance
    Showers

  • Wednesday Night

    Wednesday Night: A 10 percent chance of showers before 7pm. Mostly cloudy, with a low around 67. South wind 9 to 15 mph, with gusts as high as 25 mph.

    Low: 67 °F

    Slight Chance
    Showers then
    Mostly 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.

    Low: 59 °F

    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

Detailed Forecast

This Afternoon
Partly sunny, with a high near 83. South southwest wind around 18 mph, with gusts as high as 30 mph.
Tonight
A 20 percent chance of showers after midnight. Partly cloudy, with a low around 65. South southwest wind 10 to 14 mph, with gusts as high as 22 mph.
Wednesday
A chance of showers and thunderstorms before 4pm, then a slight chance of showers. Partly sunny, with a high near 83. South southwest wind 8 to 11 mph, with gusts as high as 20 mph. Chance of precipitation is 50%.
Wednesday Night
A 10 percent chance of showers before 7pm. Mostly cloudy, with a low around 67. South wind 9 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.
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. Mostly cloudy, with a low around 39. Northwest wind 11 to 13 mph, with gusts as high as 21 mph.
Sunday
Mostly 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.
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ABOUT THIS FORECAST

 
Point Forecast:
Carbondale IL
 37.72°N 89.23°W
Last Update:
2:01 pm CDT Mar 31, 2026
Forecast Valid:
3pm CDT Mar 31, 2026-6pm CDT Apr 6, 2026
 
Forecast Discussion
 
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Additional Resources

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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