National Weather Service United States Department of Commerce
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Last Map Update: Mon, Aug 3, 2026 at 11:28:28 am MST

A complex of strong thunderstorms will develop across SE AZ this afternoon and evening. This complex of thunderstorms is expected to fall apart in SE AZ, however, it will send a strong outflow boundary into south-central and SW AZ this evening. The main hazards will be strong gusty winds (> 35 mph) and areas of blowing dust. Rain chances for the lower deserts is < 10%. Additionally, isolated to scattered showers and 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 areawide today and across all of the lower deserts through Tuesday. Localized Major HeatRisk will linger beyond Tuesday and even likely increase in coverage again later in the week leaving the possibility of Heat Warnings being extended for some areas. Even as temperatures drop back to around 110°F by Wednesday, increased humidities will make it feel just as hot.
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.

 

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