Phoenix weather: Dangerous heat threatens the Valley

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by Kim Quintero

Bio | Email | Follow: @kimquintero

azfamily.com

Posted on June 1, 2013 at 4:43 PM

Updated Monday, Jun 3 at 9:57 PM

PHOENIX -- June is roaring in like a lion for the Valley of the Sun. Phoenix reached an afternoon high of 108 degrees Saturday. Average for this time of year is 100.

High pressure over northern Mexico is keep conditions unseasonably hot for this time of year. The Valley will see temperatures on Sunday range from 108 to 111 degrees.

The National Weather Service has issued an Excessive Heat Warning, the first of the year, for 10 a.m. until 8 p.m. Sunday for  Pinal and Maricopa counties, including the greater Phoenix area.

The NWS puts out an Excessive Heat Warning in two instances based on the heat index, which is how hot it feels when the relative humidity is added to the actual air temperature.

     1. The heat index hits at least 105 degrees for more than three hours on two consecutive days.

     2. The heat index hits 115 degrees for any length of time.

For Sunday, the NWS says "the hottest temperatures since late August are forecast across the region. Take the necessary precautions to protect yourself from the heat."

According to US forecasters, heat is the No. 1 weather-related killer.

During these hot temperatures, you should stay indoors in an air-conditioned place. If you must go outside, wear light-fitting clothing, take frequent breaks and stay hydrated. The best time to get your outdoor activity in would be during the early morning or late evening. Elderly, young children and those with health issues are most susceptible to the heat, so they need extra attention during this period.

Read: Risk of dehydration rises with coming heat wave

Read: What you need to know about heatstroke

Overnight low temperatures will cool only into the upper 70s and low 80s for Sunday morning. We’re expecting a high of 109 degrees at Sky Harbor on Sunday afternoon. The current record stands at 110, which was set  in 2006.

Next week, daytime highs in the Valley will drop a couple of degrees. We’ll see afternoons ranging from 103 to 106.

Get the latest forecast for your neighborhood

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