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

64°F

18°C

Humidity 56%
Wind Speed SW 10 mph
Barometer 29.73 in (1006.7 mb)
Dewpoint 48°F (9°C)
Visibility 10.00 mi
Last update 6 Jan 1:52 pm CST
Extended Forecast for

Carbondale IL

  • This Afternoon

    This Afternoon: Sunny, with a high near 65. West southwest wind 7 to 10 mph.

    High: 65 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 36. West southwest wind around 6 mph becoming calm in the evening.

    Low: 36 °F

    Mostly Clear

  • Wednesday

    Wednesday: Mostly sunny, with a high near 60. Calm wind becoming south 5 to 7 mph in the afternoon.

    High: 60 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Increasing clouds, with a low around 45. South southeast wind 3 to 7 mph.

    Low: 45 °F

    Increasing
    Clouds

  • Thursday

    Thursday: Showers, with thunderstorms also possible after 3pm. High near 65. South southeast wind 7 to 17 mph, with gusts as high as 28 mph. Chance of precipitation is 80%.

    High: 65 °F

    Chance
    Showers then
    Showers

  • Thursday Night

    Thursday Night: Showers and possibly a thunderstorm before midnight, then a chance of showers. Low around 56. South southwest wind 9 to 18 mph, with gusts as high as 28 mph. Chance of precipitation is 80%.

    Low: 56 °F

    Showers then
    Chance
    Showers

  • Friday

    Friday: A 30 percent chance of showers. Mostly cloudy, with a high near 62. Southwest wind 6 to 9 mph becoming north northeast in the afternoon.

    High: 62 °F

    Chance
    Showers

  • Friday Night

    Friday Night: A chance of showers. Mostly cloudy, with a low around 45. Northeast wind 6 to 8 mph becoming west after midnight.

    Low: 45 °F

    Chance
    Showers

  • Saturday

    Saturday: Partly sunny, with a high near 50. West northwest wind 9 to 14 mph, with gusts as high as 22 mph.

    High: 50 °F

    Partly Sunny

Detailed Forecast

This Afternoon
Sunny, with a high near 65. West southwest wind 7 to 10 mph.
Tonight
Mostly clear, with a low around 36. West southwest wind around 6 mph becoming calm in the evening.
Wednesday
Mostly sunny, with a high near 60. Calm wind becoming south 5 to 7 mph in the afternoon.
Wednesday Night
Increasing clouds, with a low around 45. South southeast wind 3 to 7 mph.
Thursday
Showers, with thunderstorms also possible after 3pm. High near 65. South southeast wind 7 to 17 mph, with gusts as high as 28 mph. Chance of precipitation is 80%.
Thursday Night
Showers and possibly a thunderstorm before midnight, then a chance of showers. Low around 56. South southwest wind 9 to 18 mph, with gusts as high as 28 mph. Chance of precipitation is 80%.
Friday
A 30 percent chance of showers. Mostly cloudy, with a high near 62. Southwest wind 6 to 9 mph becoming north northeast in the afternoon.
Friday Night
A chance of showers. Mostly cloudy, with a low around 45. Northeast wind 6 to 8 mph becoming west after midnight.
Saturday
Partly sunny, with a high near 50. West northwest wind 9 to 14 mph, with gusts as high as 22 mph.
Saturday Night
Partly cloudy, with a low around 28. West northwest wind 8 to 10 mph.
Sunday
Mostly sunny, with a high near 39. West northwest wind 5 to 9 mph.
Sunday Night
Mostly clear, with a low around 26. Light and variable wind.
Monday
Sunny, with a high near 47. Light southwest wind becoming south southwest 5 to 9 mph in the morning.
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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 Jan 6, 2026
Forecast Valid:
2pm CST Jan 6, 2026-6pm CST Jan 12, 2026
 
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Additional Resources

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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