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May and June Phoenix Weather
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Storm Daly
Buzz Daly writes about weather for Weather By Day . com <a href="http://www.weatherbyday.com" title="http://www.weatherbyday.com" target="_blank">http://www.weatherbyday.com</a>, a website that helps travellers and locals determine the most likely weather conditions for a set of dates, including weather in Hawaii. 
By Storm Daly
Published on 04/13/2009
 
Phoenix Arizona is the hottest and sunniest city in the United States, and May and June are when the transition from pleasantly warm to blazing hot takes places The average high temperature increases 18 degrees from May 1st to the June 30th, up to an average of 106 degrees