Highlights

Phoenix's extreme heat warning has lifted after a summer that produced 40 days above 110 degrees, including a high of 113 degrees on Saturday, according to AZFamily meteorologist Brian Petersheim.

Rising humidity is now fueling a new threat: thunderstorms. Petersheim reports a good chance of storms Sunday and into Monday, with a First Alert issued for both days. Anthem picked up roughly a quarter inch of rain from passing storms Saturday.

Monday's high is forecast at 98 degrees. The average high for this time of year is around 105 degrees, Petersheim notes, putting Monday's expected temperature 7 degrees below that mark. Drier air is expected to push in later in the week, with temperatures staying below average Monday through Wednesday and below 110 degrees through next weekend.

Sources

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  1. AZ Family (3TV/CBS5) retrieved 30/08/2026 16:22

Authored by The Scottsdale Signal. Drafted by AI from primary-source material under our beat-specific editorial guides; reviewed by humans before publish under our five-gate process. Sources retrieved at 30/08/2026 16:22. Every claim traces to a source.