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 with Haze

45°F

7°C

Humidity 77%
Wind Speed N 8 mph
Barometer 30.05 in (1017.7 mb)
Dewpoint 38°F (3°C)
Visibility 5.00 mi
Wind Chill41°F (5°C)
Last update 7 Dec 1:52 pm CST
Extended Forecast for

Carbondale IL

  • This Afternoon

    This Afternoon: A slight chance of drizzle after 3pm. Cloudy, with a high near 47. North wind 7 to 9 mph.

    High: 47 °F

    Slight Chance
    Drizzle

  • Tonight

    Tonight: A slight chance of rain and snow showers before 11pm, then a slight chance of snow showers between 11pm and 2am. Cloudy, with a low around 27. North wind 7 to 9 mph. Chance of precipitation is 20%.

    Low: 27 °F

    Slight Chance
    Rain/Snow
    then Slight
    Chance Snow
    Showers

  • Monday

    Monday: Mostly cloudy, then gradually becoming sunny, with a high near 37. North wind 5 to 7 mph becoming calm in the afternoon.

    High: 37 °F

    Decreasing
    Clouds

  • Monday Night

    Monday Night: Mostly clear, with a low around 27. Light and variable wind becoming south southwest 5 to 10 mph after midnight. Winds could gust as high as 18 mph.

    Low: 27 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 49. South southwest wind 11 to 14 mph, with gusts as high as 22 mph.

    High: 49 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 43. Southwest wind around 14 mph, with gusts as high as 25 mph.

    Low: 43 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 51. Southwest wind 7 to 14 mph becoming northwest in the afternoon. Winds could gust as high as 22 mph.

    High: 51 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: A slight chance of rain and snow showers after midnight. Mostly cloudy, with a low around 29. Northwest wind around 6 mph becoming calm in the evening.

    Low: 29 °F

    Mostly Cloudy
    then Slight
    Chance
    Rain/Snow

  • Thursday

    Thursday: A chance of rain and snow showers before noon, then a slight chance of rain showers. Mostly cloudy, with a high near 38. Northeast wind 5 to 7 mph becoming west southwest in the afternoon.

    High: 38 °F

    Chance
    Rain/Snow
    then Slight
    Chance
    Showers

Detailed Forecast

This Afternoon
A slight chance of drizzle after 3pm. Cloudy, with a high near 47. North wind 7 to 9 mph.
Tonight
A slight chance of rain and snow showers before 11pm, then a slight chance of snow showers between 11pm and 2am. Cloudy, with a low around 27. North wind 7 to 9 mph. Chance of precipitation is 20%.
Monday
Mostly cloudy, then gradually becoming sunny, with a high near 37. North wind 5 to 7 mph becoming calm in the afternoon.
Monday Night
Mostly clear, with a low around 27. Light and variable wind becoming south southwest 5 to 10 mph after midnight. Winds could gust as high as 18 mph.
Tuesday
Mostly sunny, with a high near 49. South southwest wind 11 to 14 mph, with gusts as high as 22 mph.
Tuesday Night
Mostly cloudy, with a low around 43. Southwest wind around 14 mph, with gusts as high as 25 mph.
Wednesday
Partly sunny, with a high near 51. Southwest wind 7 to 14 mph becoming northwest in the afternoon. Winds could gust as high as 22 mph.
Wednesday Night
A slight chance of rain and snow showers after midnight. Mostly cloudy, with a low around 29. Northwest wind around 6 mph becoming calm in the evening.
Thursday
A chance of rain and snow showers before noon, then a slight chance of rain showers. Mostly cloudy, with a high near 38. Northeast wind 5 to 7 mph becoming west southwest in the afternoon.
Thursday Night
Mostly cloudy, with a low around 22. North northwest wind 6 to 9 mph.
Friday
Partly sunny, with a high near 31. Northwest wind around 10 mph, with gusts as high as 18 mph.
Friday Night
Partly cloudy, with a low around 9. Northwest wind around 9 mph.
Saturday
Mostly sunny, with a high near 23. Northwest wind 5 to 8 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:
1:26 pm CST Dec 7, 2025
Forecast Valid:
2pm CST Dec 7, 2025-6pm CST Dec 13, 2025
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

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High Temperature

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Chance of Precipitation