PHOENIX (AZFamily) — A ridge of high pressure that could bring moisture into Arizona will not, because it’s moving east from New Mexico and will remain over Arizona for several days.
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That will allow temperatures to near records around the state and greatly reduce the chances for thunderstorms, even in the mountains.
We have First Alert Weather Days for Friday and Saturday, with Saturday being the hottest of those two days and another set of First Alert Days for extreme heat next Wednesday and Thursday. It’s possible that by Thursday, we could see a high of 117 degrees in Phoenix.
With a few exceptions, not much moisture will be allowed into the state due to the position of the high, which will both block moisture from coming into Arizona from the south and catch the rest of the moisture, sending it west into southern California.
We ended July with an average high of 107, which is much cooler than the average high in July 2024 of 112 degrees. While last July was the second-hottest on record for Phoenix, the July we’re just finishing up ranks as the ninth warmest.
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Arizona Braces for Heat Wave: First Alert Weather Days Announced
Phoenix, AZ — Arizona is preparing for a sweltering stretch of extreme temperatures as meteorologists announce First Alert Weather Days across the state. The National Weather Service has issued an excessive heat warning, with triple-digit temperatures expected to soar well above 110°F in several regions, including Phoenix, Tucson, and Yuma.
The First Alert designation, effective from Friday through Monday, is meant to heighten public awareness of the health and safety risks associated with the intense heat. Forecasters warn that the upcoming heat wave will be among the most severe of the summer, potentially breaking temperature records and posing a serious threat to vulnerable populations.
“We are urging residents to take this heat wave seriously,” said meteorologist Daniel Reyes of Arizona First Alert Weather. “This is not your average summer heat. Prolonged exposure can be dangerous, especially for children, seniors, and individuals with pre-existing health conditions.”
Local hospitals and emergency services are preparing for a spike in heat-related illnesses, including dehydration, heat exhaustion, and heatstroke. Cooling centers are being opened in major cities, with extended hours to accommodate those without access to air conditioning.
Officials recommend the following precautions:
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Stay indoors during peak afternoon hours.
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Drink plenty of water and avoid sugary or alcoholic beverages.
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Never leave children or pets in parked vehicles.
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Wear lightweight, loose-fitting clothing and sunscreen.
School districts and outdoor event organizers are also revisiting schedules and safety plans, with some canceling outdoor activities altogether.
The extreme weather comes amid a broader pattern of heat domes impacting much of the American Southwest this summer. Climate experts continue to warn that such events are becoming more frequent and intense due to global climate change.
Residents are encouraged to stay informed through local news channels, weather apps, and official updates from the National Weather Service.
For emergency resources and a list of local cooling centers, visit Arizona Emergency Information Network.
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