National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

Southern Illinois Airport (KMDH)

Lat: 37.78°NLon: 89.25°WElev: 400ft.

Mostly Cloudy

70°F

21°C

Humidity 64%
Wind Speed S 20 G 33 mph
Barometer 29.45 in (996.9 mb)
Dewpoint 57°F (14°C)
Visibility 10.00 mi
Last update 19 Feb 4:52 pm CST
Extended Forecast for

Carbondale IL

  • This Afternoon

    This Afternoon: A 20 percent chance of showers. Mostly sunny, with a high near 68. South wind around 15 mph, with gusts as high as 26 mph.

    High: 68 °F

    Slight Chance
    Showers

  • Tonight

    Tonight: Mostly clear, with a low around 37. South southwest wind 13 to 15 mph becoming west after midnight. Winds could gust as high as 29 mph.

    Low: 37 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 53. West wind 6 to 14 mph, with gusts as high as 24 mph.

    High: 53 °F

    Sunny

  • Friday Night

    Friday Night: Increasing clouds, with a low around 33. Calm wind becoming north around 5 mph after midnight.

    Low: 33 °F

    Increasing
    Clouds

  • Saturday

    Saturday: A slight chance of rain showers before 9am, then a slight chance of rain and snow showers between 9am and 3pm, then a slight chance of rain showers after 3pm. Partly sunny, with a high near 46. North wind 6 to 10 mph. Chance of precipitation is 20%.

    High: 46 °F

    Slight Chance
    Rain/Snow

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 25. Northwest wind 8 to 10 mph, with gusts as high as 20 mph.

    Low: 25 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 39. Northwest wind 10 to 17 mph, with gusts as high as 28 mph.

    High: 39 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 19. North northwest wind around 11 mph, with gusts as high as 20 mph.

    Low: 19 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 37. North northwest wind 7 to 13 mph, with gusts as high as 21 mph.

    High: 37 °F

    Sunny

Detailed Forecast

This Afternoon
A 20 percent chance of showers. Mostly sunny, with a high near 68. South wind around 15 mph, with gusts as high as 26 mph.
Tonight
Mostly clear, with a low around 37. South southwest wind 13 to 15 mph becoming west after midnight. Winds could gust as high as 29 mph.
Friday
Sunny, with a high near 53. West wind 6 to 14 mph, with gusts as high as 24 mph.
Friday Night
Increasing clouds, with a low around 33. Calm wind becoming north around 5 mph after midnight.
Saturday
A slight chance of rain showers before 9am, then a slight chance of rain and snow showers between 9am and 3pm, then a slight chance of rain showers after 3pm. Partly sunny, with a high near 46. North wind 6 to 10 mph. Chance of precipitation is 20%.
Saturday Night
Mostly clear, with a low around 25. Northwest wind 8 to 10 mph, with gusts as high as 20 mph.
Sunday
Sunny, with a high near 39. Northwest wind 10 to 17 mph, with gusts as high as 28 mph.
Sunday Night
Mostly clear, with a low around 19. North northwest wind around 11 mph, with gusts as high as 20 mph.
Monday
Sunny, with a high near 37. North northwest wind 7 to 13 mph, with gusts as high as 21 mph.
Monday Night
Mostly clear, with a low around 19. North northwest wind around 5 mph becoming calm in the evening.
Tuesday
Partly sunny, with a high near 48. Light south wind increasing to 9 to 14 mph in the morning. Winds could gust as high as 23 mph.
Tuesday Night
Mostly cloudy, with a low around 41. South southwest wind around 14 mph, with gusts as high as 24 mph.
Wednesday
A slight chance of showers. Mostly cloudy, with a high near 58. South southwest wind 10 to 14 mph, with gusts as high as 24 mph.
Wednesday Night
A chance of showers. Partly cloudy, with a low around 35. Southwest wind 7 to 9 mph becoming north northwest after midnight.
Thursday
A chance of showers. Mostly sunny, with a high near 56. North northwest wind 7 to 9 mph becoming south southeast in the afternoon.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Carbondale IL
 37.72°N 89.23°W
Last Update:
3:21 pm CST Feb 19, 2026
Forecast Valid:
5pm CST Feb 19, 2026-6pm CST Feb 26, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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