Heat Wave Expands to the East Coast; Flash Flooding Likely in the Central Plains into the Midwest; Severe Thunderstorms in the Northeast

Dangerous, prolonged heat is ongoing in the Mid-South to Mid-Mississippi Valley and heat expands into the Northeast for a brief period today. Widely scattered instances of flash flooding due to heavy rains are forecast from northeast Kansas to much of Indiana. Scattered strong to severe thunderstorms are possible across parts of New England, northern Mid-Atlantic, and North Dakota. Read More >

Current conditions at

Southern Illinois Airport (KMDH)

Lat: 37.78°NLon: 89.25°WElev: 400ft.

Fair

80°F

27°C

Humidity 94%
Wind Speed SE 5 mph
Barometer 30.02 in (1016.0 mb)
Dewpoint 78°F (26°C)
Visibility 8.00 mi
Heat Index86°F (30°C)
Last update 25 Jul 10:52 pm CDT
Extended Forecast for

Carbondale IL

Extreme Heat Watch July 28, 12:00pm until July 29, 08:00pm
Heat Advisory July 25, 11:13pm until July 27, 07:00pm
Click here for hazard details and duration
Extreme Heat Watch
Heat Advisory
  •  
    Heat Advisory July 25, 11:13pm until July 27, 07:00pm

    NOW until 7:00pm Sun

    Heat Advisory

  • Tonight

    Low: 76 °F

    Mostly Clear

  • Saturday

    Saturday: A 30 percent chance of showers and thunderstorms after 1pm.  Mostly sunny, with a high near 91. South southwest wind 6 to 10 mph.

    High: 91 °F

    Mostly Sunny
    then Chance
    T-storms

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 77. South southwest wind 6 to 8 mph.

    Low: 77 °F

    Partly Cloudy

  • Sunday

    Sunday: A 30 percent chance of showers and thunderstorms after 1pm.  Sunny, with a high near 93. Heat index values as high as 107. South southwest wind around 7 mph.

    High: 93 °F

    Sunny then
    Chance
    T-storms

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 77. South southwest wind around 6 mph becoming calm  in the evening.

    Low: 77 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 96. Calm wind becoming west around 5 mph.

    High: 96 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 78. Calm wind.

    Low: 78 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny and hot, with a high near 97. Light and variable wind.

    High: 97 °F

    Hot

Detailed Forecast

Tonight
Mostly clear, with a low around 76. Light south wind.
Saturday
A 30 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 91. South southwest wind 6 to 10 mph.
Saturday Night
Partly cloudy, with a low around 77. South southwest wind 6 to 8 mph.
Sunday
A 30 percent chance of showers and thunderstorms after 1pm. Sunny, with a high near 93. Heat index values as high as 107. South southwest wind around 7 mph.
Sunday Night
Mostly clear, with a low around 77. South southwest wind around 6 mph becoming calm in the evening.
Monday
Sunny, with a high near 96. Calm wind becoming west around 5 mph.
Monday Night
Mostly clear, with a low around 78. Calm wind.
Tuesday
Sunny and hot, with a high near 97. Light and variable wind.
Tuesday Night
A slight chance of showers and thunderstorms before 1am. Mostly clear, with a low around 77. Calm wind.
Wednesday
A chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 94. Calm wind becoming north around 5 mph in the afternoon.
Wednesday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 74. North northeast wind 3 to 5 mph.
Thursday
A chance of showers and thunderstorms. Partly sunny, with a high near 87. Northeast wind 5 to 8 mph.
Thursday Night
A slight chance of showers and thunderstorms. Mostly cloudy, with a low around 69. North northeast wind 6 to 8 mph.
Friday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 84. Northeast wind 7 to 10 mph.
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ABOUT THIS FORECAST

 
Point Forecast:
Carbondale IL
 37.72°N 89.23°W
10:31 pm CDT Jul 25, 2025
11pm CDT Jul 25, 2025-6pm CDT Aug 1, 2025
 
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Additional Resources

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