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.

Light Rain Fog/Mist

40°F

4°C

Humidity 86%
Wind Speed S 17 G 28 mph
Barometer 29.98 in (1015.7 mb)
Dewpoint 36°F (2°C)
Visibility 6.00 mi
Wind Chill31°F (-1°C)
Last update 29 Nov 3:52 pm CST
Extended Forecast for

Carbondale IL

  • This Afternoon

    This Afternoon: Showers. Steady temperature around 40. South wind around 17 mph, with gusts as high as 34 mph. Chance of precipitation is 90%.

    High: 40 °F

    Showers

  • Tonight

    Tonight: A 40 percent chance of showers, mainly before 11pm. Mostly cloudy, with a low around 26. South wind 13 to 16 mph becoming west northwest after midnight. Winds could gust as high as 28 mph.

    Low: 26 °F

    Chance
    Showers then
    Mostly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 33. Northwest wind 8 to 13 mph, with gusts as high as 21 mph.

    High: 33 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 22. North northwest wind around 6 mph becoming calm in the evening.

    Low: 22 °F

    Mostly Cloudy

  • Monday

    Monday: A 30 percent chance of snow showers after noon. Mostly cloudy, with a high near 36. Light northeast wind.

    High: 36 °F

    Mostly Cloudy
    then Chance
    Snow Showers

  • Monday Night

    Monday Night: Snow showers. Low around 25. Calm wind becoming north northwest around 5 mph after midnight. Chance of precipitation is 80%.

    Low: 25 °F

    Snow Showers

  • Tuesday

    Tuesday: Partly sunny, with a high near 32. North northwest wind 3 to 6 mph.

    High: 32 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 19. Calm wind.

    Low: 19 °F

    Mostly Clear

  • Wednesday

    Wednesday: Mostly sunny, with a high near 41. Calm wind becoming south southwest 5 to 7 mph in the morning.

    High: 41 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
Showers. Steady temperature around 40. South wind around 17 mph, with gusts as high as 34 mph. Chance of precipitation is 90%.
Tonight
A 40 percent chance of showers, mainly before 11pm. Mostly cloudy, with a low around 26. South wind 13 to 16 mph becoming west northwest after midnight. Winds could gust as high as 28 mph.
Sunday
Partly sunny, with a high near 33. Northwest wind 8 to 13 mph, with gusts as high as 21 mph.
Sunday Night
Mostly cloudy, with a low around 22. North northwest wind around 6 mph becoming calm in the evening.
Monday
A 30 percent chance of snow showers after noon. Mostly cloudy, with a high near 36. Light northeast wind.
Monday Night
Snow showers. Low around 25. Calm wind becoming north northwest around 5 mph after midnight. Chance of precipitation is 80%.
Tuesday
Partly sunny, with a high near 32. North northwest wind 3 to 6 mph.
Tuesday Night
Mostly clear, with a low around 19. Calm wind.
Wednesday
Mostly sunny, with a high near 41. Calm wind becoming south southwest 5 to 7 mph in the morning.
Wednesday Night
Mostly cloudy, with a low around 22. Light and variable wind becoming northwest around 6 mph after midnight.
Thursday
Partly sunny, with a high near 33. North northwest wind 3 to 6 mph.
Thursday Night
A chance of rain and snow showers. Mostly cloudy, with a low around 22. Light and variable wind.
Friday
A chance of showers. Partly sunny, with a high near 41. West wind 3 to 6 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:
3:16 pm CST Nov 29, 2025
Forecast Valid:
4pm CST Nov 29, 2025-6pm CST Dec 5, 2025
 
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Additional Resources

Radar & Satellite Image

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