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Hazardous Weather Conditions

Current conditions at

Southern Illinois Airport (KMDH)

Lat: 37.78°NLon: 89.25°WElev: 400ft.

Fair

51°F

11°C

Humidity 77%
Wind Speed S 5 mph
Barometer 30.15 in (1020.8 mb)
Dewpoint 44°F (7°C)
Visibility 10.00 mi
Wind Chill49°F (9°C)
Last update 21 Apr 3:52 am CDT
Extended Forecast for

Carbondale IL

Lake Wind Advisory April 21, 11:00am until April 21, 09:00pm
Click here for hazard details and duration
Lake Wind Advisory

  • Today

    Today: Mostly sunny, with a high near 78. Breezy, with a south southwest wind 6 to 11 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 29 mph.

    High: 78 °F

    Sunny then
    Mostly Sunny
    and Breezy

  • Tonight

    Tonight: Mostly clear, with a low around 55. South southwest wind 12 to 17 mph decreasing to 6 to 11 mph after midnight. Winds could gust as high as 24 mph.

    Low: 55 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 77. Southwest wind 6 to 10 mph, with gusts as high as 18 mph.

    High: 77 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 57. South wind around 6 mph.

    Low: 57 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 81. South wind 6 to 15 mph, with gusts as high as 24 mph.

    High: 81 °F

    Sunny

  • Thursday Night

    Thursday Night: A 40 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 63. South wind around 11 mph, with gusts as high as 21 mph.

    Low: 63 °F

    Partly Cloudy
    then Chance
    Showers

  • Friday

    Friday: Showers and possibly a thunderstorm. High near 76. South wind 10 to 14 mph, with gusts as high as 22 mph. Chance of precipitation is 90%.

    High: 76 °F

    Showers

  • Friday Night

    Friday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 58. South southwest wind 6 to 8 mph becoming north northwest after midnight.

    Low: 58 °F

    Chance
    T-storms

  • Saturday

    Saturday: A chance of showers, mainly after 1pm. Mostly sunny, with a high near 76. North wind 6 to 8 mph.

    High: 76 °F

    Chance
    Showers

Detailed Forecast

Today
Mostly sunny, with a high near 78. Breezy, with a south southwest wind 6 to 11 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 29 mph.
Tonight
Mostly clear, with a low around 55. South southwest wind 12 to 17 mph decreasing to 6 to 11 mph after midnight. Winds could gust as high as 24 mph.
Wednesday
Sunny, with a high near 77. Southwest wind 6 to 10 mph, with gusts as high as 18 mph.
Wednesday Night
Mostly clear, with a low around 57. South wind around 6 mph.
Thursday
Sunny, with a high near 81. South wind 6 to 15 mph, with gusts as high as 24 mph.
Thursday Night
A 40 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 63. South wind around 11 mph, with gusts as high as 21 mph.
Friday
Showers and possibly a thunderstorm. High near 76. South wind 10 to 14 mph, with gusts as high as 22 mph. Chance of precipitation is 90%.
Friday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 58. South southwest wind 6 to 8 mph becoming north northwest after midnight.
Saturday
A chance of showers, mainly after 1pm. Mostly sunny, with a high near 76. North wind 6 to 8 mph.
Saturday Night
A slight chance of showers. Partly cloudy, with a low around 54. East northeast wind around 6 mph.
Sunday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 76. East wind 6 to 8 mph.
Sunday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 60. East wind around 7 mph.
Monday
Showers and thunderstorms likely. Partly sunny, with a high near 77. South wind 8 to 11 mph, with gusts as high as 20 mph.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Carbondale IL
 37.72°N 89.2°W
Last Update:
2:56 am CDT Apr 21, 2026
Forecast Valid:
4am CDT Apr 21, 2026-6pm CDT Apr 27, 2026
 
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Additional Resources

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Hourly Weather Forecast

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation