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

54°F

12°C

Humidity 51%
Wind Speed SW 12 mph
Barometer 30.27 in
Dewpoint 36°F (2°C)
Visibility 10.00 mi
Wind Chill50°F (10°C)
Last update 19 Apr 8:50 am CDT
Extended Forecast for

Carbondale IL

  • Today

    Today: Sunny, with a high near 67. Light and variable wind becoming west northwest 5 to 10 mph in the morning. Winds could gust as high as 20 mph.

    High: 67 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 42. West wind around 5 mph becoming light and variable after midnight.

    Low: 42 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 69. Light and variable wind becoming east around 5 mph.

    High: 69 °F

    Sunny

  • Monday Night

    Monday Night: Clear, with a low around 50. South southeast wind 3 to 6 mph.

    Low: 50 °F

    Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 78. Southwest wind 6 to 14 mph, with gusts as high as 24 mph.

    High: 78 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Clear, with a low around 55. Southwest wind 6 to 10 mph, with gusts as high as 18 mph.

    Low: 55 °F

    Clear

  • Wednesday

    Wednesday: Sunny, with a high near 79. Southwest wind 6 to 10 mph.

    High: 79 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 59. South wind around 6 mph.

    Low: 59 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 82. South wind 7 to 15 mph, with gusts as high as 25 mph.

    High: 82 °F

    Sunny

Detailed Forecast

Today
Sunny, with a high near 67. Light and variable wind becoming west northwest 5 to 10 mph in the morning. Winds could gust as high as 20 mph.
Tonight
Mostly clear, with a low around 42. West wind around 5 mph becoming light and variable after midnight.
Monday
Sunny, with a high near 69. Light and variable wind becoming east around 5 mph.
Monday Night
Clear, with a low around 50. South southeast wind 3 to 6 mph.
Tuesday
Mostly sunny, with a high near 78. Southwest wind 6 to 14 mph, with gusts as high as 24 mph.
Tuesday Night
Clear, with a low around 55. Southwest wind 6 to 10 mph, with gusts as high as 18 mph.
Wednesday
Sunny, with a high near 79. Southwest wind 6 to 10 mph.
Wednesday Night
Mostly clear, with a low around 59. South wind around 6 mph.
Thursday
Sunny, with a high near 82. South wind 7 to 15 mph, with gusts as high as 25 mph.
Thursday Night
A chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 64. South wind around 11 mph, with gusts as high as 21 mph.
Friday
Showers and thunderstorms likely. Partly sunny, with a high near 80. South wind 11 to 15 mph, with gusts as high as 24 mph.
Friday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 53. Southwest wind 8 to 10 mph becoming northwest after midnight.
Saturday
A chance of showers and thunderstorms. Mostly sunny, with a high near 72. North northwest wind 9 to 11 mph, with gusts as high as 18 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:
9:06 am CDT Apr 19, 2026
Forecast Valid:
9am CDT Apr 19, 2026-6pm CDT Apr 25, 2026
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation