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

72°F

22°C

Humidity 55%
Wind Speed S 15 G 25 mph
Barometer 29.97 in (1014.7 mb)
Dewpoint 55°F (13°C)
Visibility 10.00 mi
Last update 30 Mar 11:52 pm CDT
Extended Forecast for

Carbondale IL

  • Overnight

    Overnight: Mostly clear, with a low around 65. South southwest wind 11 to 14 mph, with gusts as high as 24 mph.

    Low: 65 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 83. Breezy, with a south southwest wind 15 to 22 mph, with gusts as high as 36 mph.

    High: 83 °F

    Mostly Sunny
    and Breezy

  • Tuesday Night

    Tuesday Night: A 30 percent chance of showers, mainly between 2am and 5am. Partly cloudy, with a low around 65. South southwest wind 10 to 13 mph, with gusts as high as 22 mph.

    Low: 65 °F

    Partly Cloudy
    then Chance
    Showers

  • Wednesday

    Wednesday: A 50 percent chance of showers, mainly after 7am. Mostly cloudy, with a high near 81. South southwest wind 8 to 11 mph, with gusts as high as 20 mph.

    High: 81 °F

    Chance
    Showers

  • Wednesday Night

    Wednesday Night: A 20 percent chance of showers. Mostly cloudy, with a low around 66. South wind 9 to 14 mph, with gusts as high as 24 mph.

    Low: 66 °F

    Slight Chance
    Showers

  • Thursday

    Thursday: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm. Mostly cloudy, with a high near 80. Breezy, with a south wind 15 to 20 mph, with gusts as high as 31 mph. Chance of precipitation is 70%.

    High: 80 °F

    Breezy.
    Chance
    Showers then
    Showers
    Likely

  • Thursday Night

    Thursday Night: Showers and possibly a thunderstorm. Low around 64. South wind 10 to 16 mph, with gusts as high as 26 mph. Chance of precipitation is 80%.

    Low: 64 °F

    Showers

  • Friday

    Friday: Showers likely, with thunderstorms also possible after 1pm. Mostly cloudy, with a high near 80. South wind 9 to 13 mph, with gusts as high as 21 mph.

    High: 80 °F

    Showers
    Likely

  • Friday Night

    Friday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 63. South wind around 10 mph, with gusts as high as 18 mph.

    Low: 63 °F

    Chance
    T-storms

Detailed Forecast

Overnight
Mostly clear, with a low around 65. South southwest wind 11 to 14 mph, with gusts as high as 24 mph.
Tuesday
Mostly sunny, with a high near 83. Breezy, with a south southwest wind 15 to 22 mph, with gusts as high as 36 mph.
Tuesday Night
A 30 percent chance of showers, mainly between 2am and 5am. Partly cloudy, with a low around 65. South southwest wind 10 to 13 mph, with gusts as high as 22 mph.
Wednesday
A 50 percent chance of showers, mainly after 7am. Mostly cloudy, with a high near 81. South southwest wind 8 to 11 mph, with gusts as high as 20 mph.
Wednesday Night
A 20 percent chance of showers. Mostly cloudy, with a low around 66. South wind 9 to 14 mph, with gusts as high as 24 mph.
Thursday
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm. Mostly cloudy, with a high near 80. Breezy, with a south wind 15 to 20 mph, with gusts as high as 31 mph. Chance of precipitation is 70%.
Thursday Night
Showers and possibly a thunderstorm. Low around 64. South wind 10 to 16 mph, with gusts as high as 26 mph. Chance of precipitation is 80%.
Friday
Showers likely, with thunderstorms also possible after 1pm. Mostly cloudy, with a high near 80. South wind 9 to 13 mph, with gusts as high as 21 mph.
Friday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 63. South wind around 10 mph, with gusts as high as 18 mph.
Saturday
Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 73. South wind 10 to 14 mph, with gusts as high as 24 mph.
Saturday Night
A chance of showers. Mostly cloudy, with a low around 43. West northwest wind around 11 mph, with gusts as high as 18 mph.
Sunday
A chance of showers. Partly sunny, with a high near 59. North northwest wind around 11 mph, with gusts as high as 20 mph.
Sunday Night
Mostly clear, with a low around 36. North northwest wind 5 to 8 mph.
Monday
Sunny, with a high near 62. North wind 5 to 8 mph.
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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:
12:17 am CDT Mar 31, 2026
Forecast Valid:
12am CDT Mar 31, 2026-6pm CDT Apr 6, 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