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

25°F

-4°C

Humidity 85%
Wind Speed Calm
Barometer 30.13 in (1020.5 mb)
Dewpoint 21°F (-6°C)
Visibility 10.00 mi
Last update 9 Feb 4:52 am CST
Extended Forecast for

Carbondale IL

  • Today

    Today: Patchy fog before 8am. Otherwise, sunny, with a high near 53. Calm wind.

    High: 53 °F

    Patchy Fog
    then Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 40. Calm wind becoming south southwest 5 to 7 mph in the evening.

    Low: 40 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 63. Southwest wind 6 to 8 mph becoming north northwest in the afternoon.

    High: 63 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: A chance of rain showers before 3am, then a chance of rain and snow showers. Mostly cloudy, with a low around 34. North wind around 6 mph. Chance of precipitation is 30%.

    Low: 34 °F

    Chance
    Showers then
    Chance
    Rain/Snow

  • Wednesday

    Wednesday: Mostly sunny, with a high near 50. North wind 3 to 6 mph.

    High: 50 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 32. Calm wind.

    Low: 32 °F

    Mostly Cloudy

  • Thursday

    Thursday: Mostly cloudy, with a high near 48. Calm wind becoming east southeast around 6 mph in the morning.

    High: 48 °F

    Mostly Cloudy

  • Thursday Night

    Thursday Night: A chance of showers. Mostly cloudy, with a low around 34. East wind around 6 mph.

    Low: 34 °F

    Chance
    Showers

  • Friday

    Friday: A chance of showers, mainly after noon. Mostly cloudy, with a high near 47. East wind around 7 mph.

    High: 47 °F

    Chance
    Showers

Detailed Forecast

Today
Patchy fog before 8am. Otherwise, sunny, with a high near 53. Calm wind.
Tonight
Partly cloudy, with a low around 40. Calm wind becoming south southwest 5 to 7 mph in the evening.
Tuesday
Mostly sunny, with a high near 63. Southwest wind 6 to 8 mph becoming north northwest in the afternoon.
Tuesday Night
A chance of rain showers before 3am, then a chance of rain and snow showers. Mostly cloudy, with a low around 34. North wind around 6 mph. Chance of precipitation is 30%.
Wednesday
Mostly sunny, with a high near 50. North wind 3 to 6 mph.
Wednesday Night
Mostly cloudy, with a low around 32. Calm wind.
Thursday
Mostly cloudy, with a high near 48. Calm wind becoming east southeast around 6 mph in the morning.
Thursday Night
A chance of showers. Mostly cloudy, with a low around 34. East wind around 6 mph.
Friday
A chance of showers, mainly after noon. Mostly cloudy, with a high near 47. East wind around 7 mph.
Friday Night
A chance of showers, with thunderstorms also possible after midnight. Mostly cloudy, with a low around 34. East northeast wind around 7 mph.
Saturday
Showers likely. Cloudy, with a high near 48. East northeast wind 7 to 9 mph.
Saturday Night
A chance of showers. Mostly cloudy, with a low around 36. North wind around 10 mph.
Sunday
A chance of showers. Mostly sunny, with a high near 51. Northwest wind 7 to 11 mph, with gusts as high as 18 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:
5:06 am CST Feb 9, 2026
Forecast Valid:
5am CST Feb 9, 2026-6pm CST Feb 15, 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