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

60°F

16°C

Humidity 93%
Wind Speed S 3 mph
Barometer 30.00 in (1015.4 mb)
Dewpoint 58°F (14°C)
Visibility 10.00 mi
Last update 12 Oct 12:52 am CDT
Extended Forecast for

Carbondale IL

  • Overnight

    Overnight: Partly cloudy, with a steady temperature around 66. South southwest wind 3 to 6 mph.

    Low: 66 °F

    Partly Cloudy

  • Columbus Day

    Columbus Day: Sunny, with a high near 90. Southwest wind 6 to 11 mph, with gusts as high as 18 mph.

    High: 90 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 67. Southwest wind 6 to 8 mph.

    Low: 67 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 92. South southwest wind 6 to 9 mph.

    High: 92 °F

    Sunny

  • Tuesday Night

    Tuesday Night: A chance of showers between 1am and 4am, then a chance of showers and thunderstorms after 4am. Mostly clear, with a low around 72. South southwest wind around 5 mph. Chance of precipitation is 30%.

    Low: 72 °F

    Clear then
    Chance
    Showers

  • Wednesday

    Wednesday: Showers and possibly a thunderstorm. High near 85. Southwest wind around 6 mph. Chance of precipitation is 90%.

    High: 85 °F

    Showers
    Likely then
    Showers

  • Wednesday Night

    Wednesday Night: Showers likely and possibly a thunderstorm before 10pm, then showers likely between 10pm and 1am, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 67. Calm wind. Chance of precipitation is 70%.

    Low: 67 °F

    Showers
    Likely

  • Thursday

    Thursday: A chance of showers and thunderstorms. Partly sunny, with a high near 84. Light and variable wind becoming southwest 5 to 10 mph in the morning.

    High: 84 °F

    Chance
    Showers then
    Chance
    T-storms

  • Thursday Night

    Thursday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 56. West wind 5 to 14 mph, with gusts as high as 18 mph.

    Low: 56 °F

    Chance
    Showers then
    Chance
    T-storms

Detailed Forecast

Overnight
Partly cloudy, with a steady temperature around 66. South southwest wind 3 to 6 mph.
Columbus Day
Sunny, with a high near 90. Southwest wind 6 to 11 mph, with gusts as high as 18 mph.
Monday Night
Mostly clear, with a low around 67. Southwest wind 6 to 8 mph.
Tuesday
Sunny, with a high near 92. South southwest wind 6 to 9 mph.
Tuesday Night
A chance of showers between 1am and 4am, then a chance of showers and thunderstorms after 4am. Mostly clear, with a low around 72. South southwest wind around 5 mph. Chance of precipitation is 30%.
Wednesday
Showers and possibly a thunderstorm. High near 85. Southwest wind around 6 mph. Chance of precipitation is 90%.
Wednesday Night
Showers likely and possibly a thunderstorm before 10pm, then showers likely between 10pm and 1am, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 67. Calm wind. Chance of precipitation is 70%.
Thursday
A chance of showers and thunderstorms. Partly sunny, with a high near 84. Light and variable wind becoming southwest 5 to 10 mph in the morning.
Thursday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 56. West wind 5 to 14 mph, with gusts as high as 18 mph.
Friday
Mostly sunny, with a high near 65. Breezy, with a north northwest wind 17 to 20 mph, with gusts as high as 29 mph.
Friday Night
Mostly clear, with a low around 41. North wind 8 to 15 mph, with gusts as high as 23 mph.
Saturday
Sunny, with a high near 61. Northeast wind 6 to 8 mph.
Saturday Night
Clear, with a low around 38. Calm wind.
Sunday
Sunny, with a high near 68. Calm wind becoming south around 6 mph 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:
1:26 am CDT Oct 12, 2026
Forecast Valid:
1am CDT Oct 12, 2026-6pm CDT Oct 18, 2026
 
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Additional Resources

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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