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

33°F

1°C

Humidity 85%
Wind Speed Calm
Barometer 30.01 in (1016.6 mb)
Dewpoint 29°F (-2°C)
Visibility 10.00 mi
Last update 31 Dec 6:52 pm CST
Extended Forecast for

Carbondale IL

  • Tonight

    Tonight: Mostly cloudy, then gradually becoming clear, with a low around 28. West southwest wind around 6 mph becoming light and variable after midnight.

    Low: 28 °F

    Decreasing
    Clouds

  • New Year's Day

    New Year's Day: Partly sunny, with a high near 42. North northeast wind around 5 mph becoming calm in the afternoon.

    High: 42 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 30. Calm wind.

    Low: 30 °F

    Mostly Cloudy

  • Friday

    Friday: Cloudy, with a high near 44. Calm wind becoming east northeast around 6 mph in the afternoon.

    High: 44 °F

    Cloudy

  • Friday Night

    Friday Night: A 20 percent chance of showers. Cloudy, with a low around 31. Northeast wind around 6 mph.

    Low: 31 °F

    Slight Chance
    Showers

  • Saturday

    Saturday: Partly sunny, with a high near 43. North wind around 6 mph.

    High: 43 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 26. Light north wind.

    Low: 26 °F

    Mostly Clear

  • Sunday

    Sunday: Mostly sunny, with a high near 44. Light and variable wind.

    High: 44 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 34. Light and variable wind becoming south 5 to 7 mph in the evening.

    Low: 34 °F

    Partly Cloudy

Detailed Forecast

Tonight
Mostly cloudy, then gradually becoming clear, with a low around 28. West southwest wind around 6 mph becoming light and variable after midnight.
New Year's Day
Partly sunny, with a high near 42. North northeast wind around 5 mph becoming calm in the afternoon.
Thursday Night
Mostly cloudy, with a low around 30. Calm wind.
Friday
Cloudy, with a high near 44. Calm wind becoming east northeast around 6 mph in the afternoon.
Friday Night
A 20 percent chance of showers. Cloudy, with a low around 31. Northeast wind around 6 mph.
Saturday
Partly sunny, with a high near 43. North wind around 6 mph.
Saturday Night
Mostly clear, with a low around 26. Light north wind.
Sunday
Mostly sunny, with a high near 44. Light and variable wind.
Sunday Night
Partly cloudy, with a low around 34. Light and variable wind becoming south 5 to 7 mph in the evening.
Monday
Sunny, with a high near 55. South southwest wind 7 to 10 mph, with gusts as high as 18 mph.
Monday Night
Mostly cloudy, with a low around 42. South southwest wind around 6 mph.
Tuesday
Mostly sunny, with a high near 61. South southwest wind around 7 mph.
Tuesday Night
Partly cloudy, with a low around 39. Southwest wind around 6 mph becoming northwest after midnight.
Wednesday
Partly sunny, with a high near 55. Northwest wind 5 to 7 mph becoming south southwest in the afternoon.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Carbondale IL
 37.72°N 89.23°W
Last Update:
3:16 pm CST Dec 31, 2025
Forecast Valid:
6pm CST Dec 31, 2025-6pm CST Jan 7, 2026
 
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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