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Last Map Update: Mon, Aug 3, 2026 at 8:14:51 pm MST

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National Weather Service NWS Flagstaff, AZ

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July Climate Summary

A complex of strong thunderstorms will develop across SE AZ this afternoon and evening. This complex of thunderstorms is expected to push gusty winds north into the Phoenix valley. The main hazards will be strong gusty winds (> 35 mph) and areas of blowing dust. However, a quick pop up storm with brief heavy rainfall cannot be ruled out. Additionally, thunderstorms are expected across Gila County this afternoon and evening.

Well above normal temperatures with scattered areas of Major to Extreme HeatRisk is expected again Today. Temperatures will cool slightly through the first half of the week, but still remain above normal. Additionally, increasing moisture tonight into tomorrow will lead to increasing "feels like" temperatures. Lower desert locations will have "feels like" temperatures in the range of 110-120°, with the highest reading across SE CA and SW AZ. Storm chances will be mainly confined to the higher terrain areas of eastern and southeastern AZ through the majority of this week. Storm chances will increase across the lower deserts by the end of this week, with better chances heading into this weekend.

Extreme Heat Warnings are in effect through Friday across all of the lower deserts. Major HeatRisk continues. Temperatures fall only slightly through Wednesday, only to climb again for late week. Increased humidities will make it feel even hotter.

Dangerously hot temperatures are in the forecast for the upcoming week. Learn to recognize the signs of heat-related illness before they happen, and don't underestimate the heat! It is the deadliest weather-related phenomenon.

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