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Last Map Update: Thu, Aug 6, 2026 at 3:32:43 pm MST

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National Weather Service NWS Flagstaff, AZ

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July Climate Summary

Extreme Heat Warnings remain in effect through Sunday across lower deserts locations as localized major HeatRisk continues. Temperatures gradually heat up into the weekend with many lower desert locations exceeding 110 degrees. The elevated humidity levels will make it feel even hotter.

Scattered thunderstorms are expected to develop this afternoon and early evening, mainly across the higher terrain areas north and east of Phoenix. There is a low chance of an outflow descending into the lower elevations, mainly from the north and east, early this evening that could result in some gusty winds. Areas of blowing dust will be also possible with the outflow passage, mainly across Pinal County. Cannot rule out a few isolated storms (5-10% chance) forming behind the outflow boundary in the lower deserts.

Lower desert highs will increase above 110 degrees into this weekend. Elevated moisture levels will lead to increasing "feels like" temperatures. Lower desert locations will have "feels like" temperatures in the range of 110-120°, with the highest readings across SE CA and SW AZ.

Dangerously hot temperatures are in the forecast through the weekend. Make sure to take the proper precautions to protect yourself from the heat, it is the deadliest weather-related phenomenon.

All three official climate sites (Phoenix, Yuma, and El Centro) had above average temperatures with near to below normal precipitation this July. This July was the 5th hottest on record for both Yuma and El Centro and the 6th hottest on record for Phoenix.