Arizona Valley faces intense heat of 45°C with extreme alert activated for Wednesday and Thursday
An intense heat wave is returning to Arizona, driven by the formation of a high pressure zone over the Desert Southwest. This atmospheric phenomenon will result in maximum temperatures that will exceed 43 degrees Celsius in the Valley region.
As a result of these conditions, an extreme heat alert has been issued and will remain in effect throughout Wednesday and Thursday throughout the Valley, with temperatures approaching 45 degrees Celsius.
Given the seriousness of the situation, Wednesday and Thursday were designated as ABC15 Meteorological Action Days. This initiative serves as a crucial reminder for all residents to take essential preventative measures to protect themselves, their families and their pets from these dangerous heat levels.
It is essential to stay well hydrated and significantly reduce the time spent outdoors, especially between 11am and 6pm, the period when temperatures reach their peaks. During these critical times, it is recommended that pets be kept indoors.
If it is unavoidable to remain outdoors, the recommendation is to wear light, light-colored clothing, in addition to taking frequent breaks in shaded or air-conditioned places to cool down the body.
Authorities are also monitoring the issuance of other heat warnings for several other parts of Arizona.
A specific extreme heat warning is in effect for the Grand Canyon area located below 4,000 feet, extending through Tuesday night.
At the same time, some regions in southeastern Arizona, such as the cities of Tucson and Safford, are also under extreme heat warnings this Tuesday and Wednesday.
Despite the dry weather forecast for the Valley throughout the week, there is the possibility of some storms occurring in higher altitude areas. The highest chances of precipitation on Tuesday are concentrated along the Mogollon Rim and throughout northeastern Arizona.
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At the end of the week, the winds are expected to intensify. Valley residents can expect gusts approaching 30 miles per hour on Friday and Saturday.
The beginning of next week will bring relief in high temperatures, with the passage of a low pressure area to the north. The expectation is that highs will return to levels close to 40 degrees Celsius on Sunday and Monday.
Official accumulated precipitation to date in 2026 at Sky Harbor Airport: 0.32 inches, which represents a deficit of 2.61 inches from the historical average.
The official precipitation forecast for the month of 2026 at Sky Harbor Airport is 0.00 inches, with a deviation of 0.01 inch below the monthly average.
Precipitation scenario in Phoenix indicates a decreasing trend
The average precipitation during the monsoon period in Phoenix (1981-2010) was 68.7 millimeters (equivalent to 2.71 inches) of rain.
The new average precipitation during the monsoon in Phoenix (1991-2020) points to 61.6 millimeters (2.43 inches) of rain, reflecting a decrease that directly impacts the water resources of the desert region.
The average annual precipitation in Phoenix (1981-2010) was 8.03 inches of rain.
The NEW average annual precipitation in Phoenix (1991-2020) is 7.22 inches of rain.
