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

61°F

16°C

Humidity 84%
Wind Speed S 8 mph
Barometer 30.13 in (1020.0 mb)
Dewpoint 56°F (13°C)
Visibility 10.00 mi
Last update 12 Apr 6:52 am CDT
Extended Forecast for

Carbondale IL

  • Today

    Today: Mostly sunny, with a high near 82. South southwest wind 7 to 12 mph increasing to 13 to 18 mph in the afternoon. Winds could gust as high as 30 mph.

    High: 82 °F

    Mostly Sunny

  • Tonight

    Tonight: A 40 percent chance of showers and thunderstorms, mainly after 2am. Mostly cloudy, with a low around 66. South wind around 15 mph, with gusts as high as 26 mph.

    Low: 66 °F

    Mostly Cloudy
    then Chance
    T-storms

  • Monday

    Monday: A slight chance of showers and thunderstorms before 10am, then a slight chance of showers between 10am and 1pm. Mostly sunny, with a high near 82. South southwest wind 14 to 17 mph, with gusts as high as 28 mph. Chance of precipitation is 20%.

    High: 82 °F

    Slight Chance
    T-storms then
    Slight Chance
    Showers

  • Monday Night

    Monday Night: Partly cloudy, with a low around 68. South southwest wind 13 to 15 mph, with gusts as high as 24 mph.

    Low: 68 °F

    Partly Cloudy

  • Tuesday

    Tuesday: A 20 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 86. South southwest wind 11 to 16 mph, with gusts as high as 26 mph.

    High: 86 °F

    Partly Sunny
    then Slight
    Chance
    T-storms

  • Tuesday Night

    Tuesday Night: A 20 percent chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 69. South southwest wind 10 to 14 mph, with gusts as high as 22 mph.

    Low: 69 °F

    Partly Cloudy
    then Slight
    Chance
    T-storms

  • Wednesday

    Wednesday: A chance of showers, with thunderstorms also possible after 1pm. Mostly cloudy, with a high near 85. South southwest wind 10 to 15 mph, with gusts as high as 23 mph. Chance of precipitation is 40%.

    High: 85 °F

    Chance
    Showers

  • Wednesday Night

    Wednesday Night: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 65. South southwest wind 8 to 11 mph, with gusts as high as 20 mph.

    Low: 65 °F

    Chance
    T-storms then
    Showers
    Likely

  • Thursday

    Thursday: A chance of showers and thunderstorms. Partly sunny, with a high near 82. South southwest wind 8 to 10 mph.

    High: 82 °F

    Chance
    Showers then
    Chance
    T-storms

Detailed Forecast

Today
Mostly sunny, with a high near 82. South southwest wind 7 to 12 mph increasing to 13 to 18 mph in the afternoon. Winds could gust as high as 30 mph.
Tonight
A 40 percent chance of showers and thunderstorms, mainly after 2am. Mostly cloudy, with a low around 66. South wind around 15 mph, with gusts as high as 26 mph.
Monday
A slight chance of showers and thunderstorms before 10am, then a slight chance of showers between 10am and 1pm. Mostly sunny, with a high near 82. South southwest wind 14 to 17 mph, with gusts as high as 28 mph. Chance of precipitation is 20%.
Monday Night
Partly cloudy, with a low around 68. South southwest wind 13 to 15 mph, with gusts as high as 24 mph.
Tuesday
A 20 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 86. South southwest wind 11 to 16 mph, with gusts as high as 26 mph.
Tuesday Night
A 20 percent chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 69. South southwest wind 10 to 14 mph, with gusts as high as 22 mph.
Wednesday
A chance of showers, with thunderstorms also possible after 1pm. Mostly cloudy, with a high near 85. South southwest wind 10 to 15 mph, with gusts as high as 23 mph. Chance of precipitation is 40%.
Wednesday Night
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 65. South southwest wind 8 to 11 mph, with gusts as high as 20 mph.
Thursday
A chance of showers and thunderstorms. Partly sunny, with a high near 82. South southwest wind 8 to 10 mph.
Thursday Night
A slight chance of showers and thunderstorms before 1am. Mostly clear, with a low around 62. South southwest wind around 6 mph.
Friday
A chance of showers and thunderstorms. Mostly sunny, with a high near 86. South southwest wind 5 to 11 mph, with gusts as high as 21 mph.
Friday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 65. South wind 8 to 10 mph.
Saturday
A chance of showers and thunderstorms. Partly sunny, with a high near 80. South southwest wind 10 to 14 mph, with gusts as high as 22 mph.
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ABOUT THIS FORECAST

 
Point Forecast:
Carbondale IL
 37.72°N 89.23°W
Last Update:
4:36 am CDT Apr 12, 2026
Forecast Valid:
6am CDT Apr 12, 2026-6pm CDT Apr 18, 2026
 
Forecast Discussion
 
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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