Highlights
- An Extreme Heat Warning remains in effect for the Phoenix Valley through Saturday, with all six coming days designated First Alert Weather Days.
- Afternoon highs of 114 to 116 degrees are forecast Tuesday through Thursday, with morning lows staying in the low 90s.
- Monday brings a 109-degree high after lingering morning showers clear; storm chances stay slim until Friday night.
- Temperatures are expected to drop below 110 degrees by Sunday as slight storm chances return Saturday and Sunday nights.
An Extreme Heat Warning covering the Phoenix Valley runs through Saturday, with meteorologist April Warnecke at Arizona's Family calling all six of the next days First Alert Weather Days.
Late-night thunderstorms fizzled overnight, but lingering rain continued Monday morning across parts of the Valley under mostly cloudy skies. By afternoon, skies clear to mostly sunny with a high of 109 degrees.
The more significant heat arrives Tuesday through Thursday, as high pressure moves directly over Arizona. Warnecke forecasts afternoon highs near 114 to 116 degrees those three days, with warm morning lows in the low 90s, near-record or record territory for the period.
Storm chances remain slim through the week, returning to the slight category for Friday night. Saturday night and Sunday night carry a 10 to 20 percent storm probability. By Sunday afternoon, temperatures are expected to fall below 110 degrees.
The National Weather Service Phoenix office has issued corroborating Extreme Heat Warnings covering the Northwest Valley, Buckeye and Avondale, Deer Valley, and central Phoenix zones.
The warning remains in effect through Saturday.
Sources
Every factual claim in this article traces to one of the sources below. See how we work for the editorial process.
- AZ Family (3TV/CBS5) retrieved 24/08/2026 13:09
- api.weather.gov retrieved 24/08/2026 13:09
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 24/08/2026 13:09. Every claim traces to a source.
