Dangerous Heat and Humidity Building from the Plains to the East Coast

A strengthening ridge of high pressure will produce much above average temperatures from the Plains to the East Coast, a true summer heat wave. Highs in the 90s and triple digits combined w/ humidity and dewpoints surging into the upper 70s, if not low 80s, will create heat indices as high as 110 to 115 through this weekend. Air quality will likely be poor due to haze and little air circulation. Read More >

Current conditions at

Southern Illinois Airport (KMDH)

Lat: 37.78°NLon: 89.25°WElev: 400ft.

Fair

73°F

23°C

Humidity 94%
Wind Speed S 5 mph
Barometer 29.99 in (1015.1 mb)
Dewpoint 71°F (22°C)
Visibility 10.00 mi
Last update 18 Jul 6:52 am CDT
Extended Forecast for

2 Miles SSW Carbondale IL

Excessive Heat Warning July 18, 12:00pm until July 21, 07:00pm
Click here for hazard details and duration
Excessive Heat Warning
  • Today

    Today: Isolated showers before 8am.  Mostly sunny, with a high near 93. Heat index values as high as 107. Southwest wind 6 to 11 mph, with gusts as high as 18 mph.  Chance of precipitation is 20%.

    Isolated
    Showers then
    Mostly Sunny

    High: 93 °F

  • Tonight

    Tonight: Mostly clear, with a low around 76. South wind 7 to 13 mph, with gusts as high as 21 mph.

    Mostly Clear

    Low: 76 °F

  • Friday

    Friday: Sunny, with a high near 95. Heat index values as high as 107. South southwest wind 8 to 11 mph, with gusts as high as 18 mph.

    Sunny

    High: 95 °F

  • Friday
    Night

    Friday Night: Clear, with a low around 74. South southwest wind 5 to 7 mph.

    Clear

    Low: 74 °F

  • Saturday

    Saturday: Sunny, with a high near 95. Southwest wind around 7 mph.

    Sunny

    High: 95 °F

  • Saturday
    Night

    Saturday Night: Mostly clear, with a low around 74. Southwest wind around 6 mph.

    Mostly Clear

    Low: 74 °F

  • Sunday

    Sunday: A 20 percent chance of showers and thunderstorms after 1pm.  Mostly sunny, with a high near 94. Southwest wind 5 to 7 mph.

    Sunny then
    Slight Chance
    T-storms

    High: 94 °F

  • Sunday
    Night

    Sunday Night: A chance of showers and thunderstorms.  Mostly cloudy, with a low around 73. West wind 5 to 7 mph becoming north after midnight.

    Chance
    T-storms

    Low: 73 °F

  • Monday

    Monday: A chance of showers and thunderstorms, mainly after 1pm.  Partly sunny, with a high near 87. North wind 7 to 9 mph.

    Chance
    T-storms

    High: 87 °F

Detailed Forecast

Today
Isolated showers before 8am. Mostly sunny, with a high near 93. Heat index values as high as 107. Southwest wind 6 to 11 mph, with gusts as high as 18 mph. Chance of precipitation is 20%.
Tonight
Mostly clear, with a low around 76. South wind 7 to 13 mph, with gusts as high as 21 mph.
Friday
Sunny, with a high near 95. Heat index values as high as 107. South southwest wind 8 to 11 mph, with gusts as high as 18 mph.
Friday Night
Clear, with a low around 74. South southwest wind 5 to 7 mph.
Saturday
Sunny, with a high near 95. Southwest wind around 7 mph.
Saturday Night
Mostly clear, with a low around 74. Southwest wind around 6 mph.
Sunday
A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 94. Southwest wind 5 to 7 mph.
Sunday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 73. West wind 5 to 7 mph becoming north after midnight.
Monday
A chance of showers and thunderstorms, mainly after 1pm. Partly sunny, with a high near 87. North wind 7 to 9 mph.
Monday Night
A chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 67. North northeast wind 5 to 9 mph.
Tuesday
Sunny, with a high near 83. North wind 5 to 7 mph.
Tuesday Night
Mostly clear, with a low around 64. North wind around 6 mph becoming calm in the evening.
Wednesday
Sunny, with a high near 83. North wind 3 to 7 mph.
Click Map For Forecast
Point Forecast:
2 Miles SSW Carbondale IL
 37.7°N 89.23°W
6:59 am CDT Jul 18, 2019
7am CDT Jul 18, 2019-6pm CDT Jul 24, 2019
 
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Additional Resources

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