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Hazardous Weather Conditions

Current conditions at

Southern Illinois Airport (KMDH)

Lat: 37.78°NLon: 89.25°WElev: 400ft.

Fair

41°F

5°C

Humidity 96%
Wind Speed SW 3 mph
Barometer 30.04 in (1017.4 mb)
Dewpoint 40°F (4°C)
Visibility 9.00 mi
Last update 15 Feb 8:52 pm CST
Extended Forecast for

Carbondale IL

Dense Fog Advisory February 15, 11:00pm until February 16, 09:00am
Click here for hazard details and duration
Dense Fog Advisory

  • Tonight

    Tonight: Widespread dense fog, mainly after 11pm. Otherwise, clear early, then becoming mostly cloudy, with a low around 34. Calm wind.

    Low: 34 °F

    Dense Fog

  • Washington's Birthday

    Washington's Birthday: Widespread dense fog before 9am. Otherwise, mostly cloudy through mid morning, then becoming sunny, with a high near 62. Calm wind becoming south southwest 5 to 9 mph in the morning.

    High: 62 °F

    Dense Fog
    then Mostly
    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 44. South wind around 6 mph.

    Low: 44 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly cloudy, with a high near 64. South wind 6 to 11 mph increasing to 12 to 17 mph in the afternoon. Winds could gust as high as 28 mph.

    High: 64 °F

    Mostly Cloudy

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 59. Breezy, with a south southwest wind 18 to 22 mph, with gusts as high as 34 mph.

    Low: 59 °F

    Mostly Cloudy
    and Breezy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 73. Southwest wind 11 to 18 mph, with gusts as high as 30 mph.

    High: 73 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 53. South southwest wind 6 to 10 mph.

    Low: 53 °F

    Mostly Clear

  • Thursday

    Thursday: A slight chance of showers and thunderstorms after noon. Mostly sunny, with a high near 74. South southwest wind 6 to 14 mph, with gusts as high as 24 mph.

    High: 74 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Thursday Night

    Thursday Night: A chance of showers and thunderstorms before midnight, then a slight chance of showers. Partly cloudy, with a low around 44. South southwest wind 7 to 10 mph becoming west after midnight. Winds could gust as high as 18 mph.

    Low: 44 °F

    Chance
    T-storms then
    Slight Chance
    Showers

Detailed Forecast

Tonight
Widespread dense fog, mainly after 11pm. Otherwise, clear early, then becoming mostly cloudy, with a low around 34. Calm wind.
Washington's Birthday
Widespread dense fog before 9am. Otherwise, mostly cloudy through mid morning, then becoming sunny, with a high near 62. Calm wind becoming south southwest 5 to 9 mph in the morning.
Monday Night
Partly cloudy, with a low around 44. South wind around 6 mph.
Tuesday
Mostly cloudy, with a high near 64. South wind 6 to 11 mph increasing to 12 to 17 mph in the afternoon. Winds could gust as high as 28 mph.
Tuesday Night
Mostly cloudy, with a low around 59. Breezy, with a south southwest wind 18 to 22 mph, with gusts as high as 34 mph.
Wednesday
Mostly sunny, with a high near 73. Southwest wind 11 to 18 mph, with gusts as high as 30 mph.
Wednesday Night
Mostly clear, with a low around 53. South southwest wind 6 to 10 mph.
Thursday
A slight chance of showers and thunderstorms after noon. Mostly sunny, with a high near 74. South southwest wind 6 to 14 mph, with gusts as high as 24 mph.
Thursday Night
A chance of showers and thunderstorms before midnight, then a slight chance of showers. Partly cloudy, with a low around 44. South southwest wind 7 to 10 mph becoming west after midnight. Winds could gust as high as 18 mph.
Friday
A chance of showers, mainly after noon. Partly sunny, with a high near 57. West northwest wind 7 to 9 mph.
Friday Night
A chance of showers. Mostly cloudy, with a low around 35. North wind around 7 mph.
Saturday
A chance of showers. Mostly sunny, with a high near 51. North northwest wind 6 to 8 mph.
Saturday Night
A chance of showers. Partly cloudy, with a low around 30. North northwest wind around 7 mph.
Sunday
Sunny, with a high near 47. North northwest wind 7 to 10 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:
8:42 pm CST Feb 15, 2026
Forecast Valid:
9pm CST Feb 15, 2026-6pm CST Feb 22, 2026
 
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Additional Resources

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