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.

Fog/Mist

61°F

16°C

Humidity 100%
Wind Speed S 5 mph
Barometer 30.04 in (1017.1 mb)
Dewpoint 61°F (16°C)
Visibility 5.00 mi
Last update 5 Mar 9:52 pm CST
Extended Forecast for

Carbondale IL

  • Tonight

    Tonight: A slight chance of showers and thunderstorms before 4am, then a chance of showers and thunderstorms after 5am. Mostly cloudy, with a low around 60. South wind 3 to 5 mph. Chance of precipitation is 30%.

    Low: 60 °F

    Slight Chance
    T-storms then
    Chance
    Showers

  • Friday

    Friday: Partly sunny, with a high near 77. South wind 6 to 11 mph increasing to 12 to 17 mph in the afternoon. Winds could gust as high as 26 mph.

    High: 77 °F

    Partly Sunny

  • Friday Night

    Friday Night: Showers likely and possibly a thunderstorm after midnight. Mostly cloudy, with a low around 63. South wind 10 to 14 mph, with gusts as high as 24 mph. Chance of precipitation is 70%.

    Low: 63 °F

    Mostly Cloudy
    then Showers
    Likely

  • Saturday

    Saturday: Showers and possibly a thunderstorm before noon, then a chance of showers and thunderstorms after noon. High near 73. South southwest wind 9 to 14 mph becoming northwest in the afternoon. Winds could gust as high as 23 mph. Chance of precipitation is 90%.

    High: 73 °F

    Showers then
    Chance
    T-storms

  • Saturday Night

    Saturday Night: A 20 percent chance of showers before midnight. Mostly cloudy, with a low around 43. Northwest wind 5 to 8 mph becoming calm after midnight.

    Low: 43 °F

    Slight Chance
    Showers then
    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 66. Calm wind becoming southwest around 5 mph.

    High: 66 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 50. South wind 3 to 5 mph.

    Low: 50 °F

    Mostly Clear

  • Monday

    Monday: A slight chance of showers after noon. Mostly sunny, with a high near 75. South southwest wind 6 to 13 mph, with gusts as high as 21 mph.

    High: 75 °F

    Mostly Sunny
    then Slight
    Chance
    Showers

  • Monday Night

    Monday Night: A slight chance of showers, then a chance of showers and thunderstorms after midnight. Partly cloudy, with a low around 61. South southwest wind around 10 mph.

    Low: 61 °F

    Chance
    Showers

Detailed Forecast

Tonight
A slight chance of showers and thunderstorms before 4am, then a chance of showers and thunderstorms after 5am. Mostly cloudy, with a low around 60. South wind 3 to 5 mph. Chance of precipitation is 30%.
Friday
Partly sunny, with a high near 77. South wind 6 to 11 mph increasing to 12 to 17 mph in the afternoon. Winds could gust as high as 26 mph.
Friday Night
Showers likely and possibly a thunderstorm after midnight. Mostly cloudy, with a low around 63. South wind 10 to 14 mph, with gusts as high as 24 mph. Chance of precipitation is 70%.
Saturday
Showers and possibly a thunderstorm before noon, then a chance of showers and thunderstorms after noon. High near 73. South southwest wind 9 to 14 mph becoming northwest in the afternoon. Winds could gust as high as 23 mph. Chance of precipitation is 90%.
Saturday Night
A 20 percent chance of showers before midnight. Mostly cloudy, with a low around 43. Northwest wind 5 to 8 mph becoming calm after midnight.
Sunday
Mostly sunny, with a high near 66. Calm wind becoming southwest around 5 mph.
Sunday Night
Mostly clear, with a low around 50. South wind 3 to 5 mph.
Monday
A slight chance of showers after noon. Mostly sunny, with a high near 75. South southwest wind 6 to 13 mph, with gusts as high as 21 mph.
Monday Night
A slight chance of showers, then a chance of showers and thunderstorms after midnight. Partly cloudy, with a low around 61. South southwest wind around 10 mph.
Tuesday
Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 77. South southwest wind 9 to 16 mph, with gusts as high as 25 mph.
Tuesday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 61. South southwest wind 13 to 15 mph, with gusts as high as 25 mph.
Wednesday
Showers. Mostly cloudy, with a high near 70. South southwest wind around 15 mph becoming north northwest in the afternoon. Winds could gust as high as 25 mph.
Wednesday Night
A chance of showers. Mostly cloudy, with a low around 40. North wind 8 to 13 mph, with gusts as high as 21 mph.
Thursday
Mostly sunny, with a high near 55. North wind 7 to 9 mph becoming east 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:
8:32 pm CST Mar 5, 2026
Forecast Valid:
9pm CST Mar 5, 2026-6pm CDT Mar 12, 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