Highlights
- Phoenix will peak near 107 degrees Thursday after overnight storms, down from recent highs above 110.
- Temperatures climb back above 110 by Friday afternoon and hold there through the weekend.
- An Extreme Heat Warning is in effect through Sunday and is expected to be extended through at least mid-next week.
- Storm chances in the Valley today are just 10%, with scattered activity limited to higher elevations.
Phoenix gets a one-day reprieve Thursday after overnight storms swept through the Valley, but the heat returns fast: temperatures will peak near 107 degrees this afternoon before climbing back above 110 by Friday, according to Arizona's Family meteorologist April Warnecke.
Thursday is a First Alert Weather Day for extreme heat. Morning cloud cover is keeping temperatures in the 80s for now, but that buffer burns off quickly. Late-night and early-morning storms brought severe winds and heavy rain to parts of the Valley; a few showers lingered on the west side through early morning before pushing further west.
Storm chances in the Valley today are sharply reduced. The atmosphere is more stable after last night's activity, limiting scattered storms to higher elevations. There is only a 10% chance of an isolated storm moving into the Valley tonight.
The heat reasserts itself through the weekend and into next week. FOX 10 Phoenix reports temperatures will continue at or above 110 degrees, with only minor relief possible by next Monday. The National Weather Service Phoenix office puts afternoon highs across the lower deserts between 109 and 113 degrees throughout the week, several degrees above daily normals.
An Extreme Heat Warning is in effect through Sunday. First Alert Days continue through next Wednesday, and Warnecke notes the warning will likely be extended as hot temperatures are expected to persist through at least the middle of next week.
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 20/08/2026 12:55
- Fox 10 Phoenix retrieved 20/08/2026 12:55
- weather.gov retrieved 20/08/2026 12:55
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 12:55. Every claim traces to a source.
