National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

Southern Illinois Airport (KMDH)

Lat: 37.78°NLon: 89.25°WElev: 400ft.

Fog/Mist

70°F

21°C

Humidity 88%
Wind Speed NW 8 mph
Barometer 29.78 in
Dewpoint 66°F (19°C)
Visibility 6.00 mi
Last update 2 Aug 7:52 am CDT
Extended Forecast for

Carbondale IL

  • Today

    Today: Patchy drizzle before 9am, then patchy drizzle after 11am. Mostly cloudy, with a high near 80. North wind 9 to 14 mph, with gusts as high as 23 mph.

    High: 80 °F

    Patchy
    Drizzle

  • Tonight

    Tonight: Partly cloudy, with a low around 65. North wind 5 to 9 mph becoming light after midnight.

    Low: 65 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 85. North wind 3 to 7 mph.

    High: 85 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Clear, with a low around 64. Light northeast wind.

    Low: 64 °F

    Clear

  • Tuesday

    Tuesday: Sunny, with a high near 88. Calm wind.

    High: 88 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 65. Calm wind.

    Low: 65 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 91. Light and variable wind.

    High: 91 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 70. Calm wind.

    Low: 70 °F

    Mostly Clear

  • Thursday

    Thursday: A slight chance of showers and thunderstorms before 1pm. Mostly sunny, with a high near 90. Calm wind becoming southwest 5 to 7 mph in the morning.

    High: 90 °F

    Slight Chance
    T-storms

Detailed Forecast

Today
Patchy drizzle before 9am, then patchy drizzle after 11am. Mostly cloudy, with a high near 80. North wind 9 to 14 mph, with gusts as high as 23 mph.
Tonight
Partly cloudy, with a low around 65. North wind 5 to 9 mph becoming light after midnight.
Monday
Mostly sunny, with a high near 85. North wind 3 to 7 mph.
Monday Night
Clear, with a low around 64. Light northeast wind.
Tuesday
Sunny, with a high near 88. Calm wind.
Tuesday Night
Mostly clear, with a low around 65. Calm wind.
Wednesday
Sunny, with a high near 91. Light and variable wind.
Wednesday Night
Mostly clear, with a low around 70. Calm wind.
Thursday
A slight chance of showers and thunderstorms before 1pm. Mostly sunny, with a high near 90. Calm wind becoming southwest 5 to 7 mph in the morning.
Thursday Night
A slight chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 71. South wind around 5 mph becoming calm in the evening.
Friday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 90. Southwest wind 3 to 6 mph.
Friday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 71. Light south wind.
Saturday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 92. Calm wind becoming south southwest 5 to 7 mph in the morning.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Carbondale IL
 37.74°N 89.23°W
Last Update:
8:00 am CDT Aug 2, 2026
Forecast Valid:
8am CDT Aug 2, 2026-6pm CDT Aug 8, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation