Southwest Arizona Weather May 12–17: Temps Stay Above Normal, 100° Heat, Sunny Skies Persist

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Phoenix, Arizona weather
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Phoenix, AZ – Above-normal heat will continue across Arizona this week, with temperatures hovering near 100 degrees in the Phoenix metro and other lower desert areas through Saturday, May 17.

According to the National Weather Service in Phoenix, temperatures will gradually ease slightly through midweek but remain 4 to 8 degrees above seasonal averages. Highs in Phoenix are expected to range from 103 to 108 degrees Tuesday, May 12, before dipping closer to 96 to 100 degrees by Thursday, May 14.

Despite the slight cooldown, conditions will remain hot, dry, and sunny across much of the region, including Maricopa County and surrounding desert communities.

Other areas, including Yuma and the Imperial Valley, are also expected to see triple-digit heat early in the week, with highs between 100 and 104 degrees before settling into the upper 90s to near 100 degrees later in the week.

Across south-central Arizona, occasional breezes and some passing high clouds are possible Tuesday and Wednesday, but no precipitation is expected.

By Friday, May 15, and into the weekend, temperatures are forecast to stabilize, with highs generally between 97 and 101 degrees across the lower deserts.

Officials urge residents to take precautions in the heat, including staying hydrated, limiting outdoor activity during peak afternoon hours, and checking on vulnerable individuals.

With no rain in sight and persistent sunshine, early-season heat safety will be key across Arizona this week.