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

59°F

15°C

Humidity 28%
Wind Speed Vrbl 6 mph
Barometer 30.14 in (1020.7 mb)
Dewpoint 26°F (-3°C)
Visibility 10.00 mi
Last update 13 Feb 2:52 pm CST
Extended Forecast for

Carbondale IL

  • This Afternoon

    This Afternoon: Sunny, with a high near 59. South wind 3 to 5 mph.

    High: 59 °F

    Sunny

  • Tonight

    Tonight: Increasing clouds, with a low around 39. Light south wind.

    Low: 39 °F

    Increasing
    Clouds

  • Saturday

    Saturday: Showers, mainly after 9am. High near 54. Calm wind becoming east southeast around 6 mph in the afternoon. Chance of precipitation is 90%.

    High: 54 °F

    Showers
    Likely then
    Showers

  • Saturday Night

    Saturday Night: Showers. Low around 46. East southeast wind around 7 mph. Chance of precipitation is 100%.

    Low: 46 °F

    Showers

  • Sunday

    Sunday: A 50 percent chance of showers before noon. Mostly cloudy, with a high near 55. North northeast wind 6 to 10 mph, with gusts as high as 18 mph.

    High: 55 °F

    Chance
    Showers then
    Mostly Cloudy

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 40. North northeast wind around 6 mph becoming calm in the evening.

    Low: 40 °F

    Partly Cloudy

  • Washington's Birthday

    Washington's Birthday: Mostly sunny, with a high near 62. Calm wind becoming south around 6 mph in the afternoon.

    High: 62 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 45. South wind around 5 mph.

    Low: 45 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Mostly cloudy, with a high near 65. South wind 5 to 14 mph, with gusts as high as 22 mph.

    High: 65 °F

    Mostly Cloudy

Detailed Forecast

This Afternoon
Sunny, with a high near 59. South wind 3 to 5 mph.
Tonight
Increasing clouds, with a low around 39. Light south wind.
Saturday
Showers, mainly after 9am. High near 54. Calm wind becoming east southeast around 6 mph in the afternoon. Chance of precipitation is 90%.
Saturday Night
Showers. Low around 46. East southeast wind around 7 mph. Chance of precipitation is 100%.
Sunday
A 50 percent chance of showers before noon. Mostly cloudy, with a high near 55. North northeast wind 6 to 10 mph, with gusts as high as 18 mph.
Sunday Night
Partly cloudy, with a low around 40. North northeast wind around 6 mph becoming calm in the evening.
Washington's Birthday
Mostly sunny, with a high near 62. Calm wind becoming south around 6 mph in the afternoon.
Monday Night
Mostly cloudy, with a low around 45. South wind around 5 mph.
Tuesday
Mostly cloudy, with a high near 65. South wind 5 to 14 mph, with gusts as high as 22 mph.
Tuesday Night
Mostly cloudy, with a low around 57. South southwest wind 13 to 15 mph, with gusts as high as 24 mph.
Wednesday
Partly sunny, with a high near 72. Southwest wind 9 to 13 mph, with gusts as high as 22 mph.
Wednesday Night
Mostly cloudy, with a low around 52. South southwest wind around 8 mph.
Thursday
A slight chance of showers. Partly sunny, with a high near 70. South southwest wind 7 to 13 mph, with gusts as high as 22 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:
3:21 pm CST Feb 13, 2026
Forecast Valid:
3pm CST Feb 13, 2026-6pm CST Feb 19, 2026
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation