High heat, high humidity mean another Excessive Heat Warning for ValleyPosted: Updated:
PHOENIX -- Hot and sticky weather conditions in the Valley are expected to worsen over the next couple of days, prompting the National Weather Service to issue an Excessive Heat Warning.
That warning is in effect today, tomorrow and Wednesday for temperatures peaking between 108 and 111. Typical August high humidity levels mean it will feel more like 115 according to the heat index.
Overnight lows are expected to stay in the mid-upper 80s. Heat like this can be dangerous, as the body has a harder time cooling itself. Remember to drink extra water and limit your time outdoors.
The warning expires Wednesday night at 8:00.
There is a slight chance of storms today and tomorrow, with chances up to about 30 percent by Tuesday night and into Wednesday. Storm chances stay at about 20 percent from Thursday through next weekend.
Temperatures are expected to return average by the weekend.
There is also an Ozone Health Watch in effect for the Valley today. Carpool if you can and refuel after dark.