Highlights
- An extreme heat warning remains in effect for the Phoenix area through Sunday, Aug. 23.
- Phoenix is forecast to reach 108 degrees Thursday following severe storms Wednesday night.
- The National Weather Service and AZFamily both confirm the warning covers multiple Valley zones including Central Phoenix and the Northwest Valley.
- Low storm chances Thursday offer little cooling relief before temperatures climb further through the weekend.
An extreme heat warning covering Phoenix and surrounding Valley communities remains in effect through Sunday as temperatures rebound following severe storms Wednesday, FOX 10 Phoenix reported Thursday.
Thursday's forecast high sits at 108 degrees, with storm chances described as low. The warning, which AZFamily confirmed extends through Sunday under its First Alert Weather Day designation, covers a broad footprint including the Northwest Valley, Buckeye and Avondale, Deer Valley, Central Phoenix, and North Phoenix, according to National Weather Service alerts.
Wednesday's storms brought a brief temperature break, but AZFamily reported Thursday morning that the heat is climbing back fast. The NWS Phoenix forecast office shows afternoon highs across the lower deserts ranging between 109 and 113 degrees through the week, several degrees above daily normals, with overnight lows remaining in the 80s.
The warning is expected to lift after Sunday.
Sources
Every factual claim in this article traces to one of the sources below. See how we work for the editorial process.
- Fox 10 Phoenix retrieved 20/08/2026 15:25
- AZ Family (3TV/CBS5) retrieved 20/08/2026 15:25
- api.weather.gov retrieved 20/08/2026 15:25
- AZ Family (3TV/CBS5) retrieved 20/08/2026 15:25
- weather.gov retrieved 20/08/2026 15:25
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 20/08/2026 15:25. Every claim traces to a source.
