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.

Overcast

37°F

3°C

Humidity 59%
Wind Speed NW 10 mph
Barometer 30.21 in (1023.3 mb)
Dewpoint 24°F (-4°C)
Visibility 10.00 mi
Wind Chill30°F (-1°C)
Last update 21 Feb 12:52 pm CST
Extended Forecast for

Carbondale IL

  • This Afternoon

    This Afternoon: A chance of sprinkles before 2pm. Partly sunny, with a steady temperature around 39. North northwest wind around 8 mph.

    High: 39 °F

    Chance
    Sprinkles

  • Tonight

    Tonight: Mostly clear, with a low around 24. Northwest wind 6 to 13 mph, with gusts as high as 22 mph.

    Low: 24 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 36. Northwest wind 13 to 18 mph, with gusts as high as 30 mph.

    High: 36 °F

    Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 17. North northwest wind around 14 mph, with gusts as high as 24 mph.

    Low: 17 °F

    Partly Cloudy

  • Monday

    Monday: Sunny, with a high near 34. North northwest wind 7 to 14 mph, with gusts as high as 22 mph.

    High: 34 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 18. Northwest wind around 5 mph becoming calm.

    Low: 18 °F

    Mostly Clear

  • Tuesday

    Tuesday: Partly sunny, with a high near 49. South southwest wind 6 to 16 mph, with gusts as high as 26 mph.

    High: 49 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 40. South southwest wind 10 to 14 mph, with gusts as high as 24 mph.

    Low: 40 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly cloudy, with a high near 62. Southwest wind around 11 mph, with gusts as high as 20 mph.

    High: 62 °F

    Mostly Cloudy

Detailed Forecast

This Afternoon
A chance of sprinkles before 2pm. Partly sunny, with a steady temperature around 39. North northwest wind around 8 mph.
Tonight
Mostly clear, with a low around 24. Northwest wind 6 to 13 mph, with gusts as high as 22 mph.
Sunday
Sunny, with a high near 36. Northwest wind 13 to 18 mph, with gusts as high as 30 mph.
Sunday Night
Partly cloudy, with a low around 17. North northwest wind around 14 mph, with gusts as high as 24 mph.
Monday
Sunny, with a high near 34. North northwest wind 7 to 14 mph, with gusts as high as 22 mph.
Monday Night
Mostly clear, with a low around 18. Northwest wind around 5 mph becoming calm.
Tuesday
Partly sunny, with a high near 49. South southwest wind 6 to 16 mph, with gusts as high as 26 mph.
Tuesday Night
Mostly cloudy, with a low around 40. South southwest wind 10 to 14 mph, with gusts as high as 24 mph.
Wednesday
Mostly cloudy, with a high near 62. Southwest wind around 11 mph, with gusts as high as 20 mph.
Wednesday Night
A chance of showers, mainly after midnight. Mostly cloudy, with a low around 41. South southwest wind around 9 mph becoming north northwest after midnight.
Thursday
A chance of showers. Partly sunny, with a high near 54. West northwest wind 8 to 10 mph.
Thursday Night
A slight chance of showers. Mostly clear, with a low around 31. Northwest wind 5 to 7 mph becoming south southwest after midnight.
Friday
Sunny, with a high near 59. South southwest wind 5 to 9 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:
11:46 am CST Feb 21, 2026
Forecast Valid:
1pm CST Feb 21, 2026-6pm CST Feb 27, 2026
 
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