Highlights
- Phoenix hit 92 degrees overnight Wednesday, breaking the previous daily record warm low of 88 degrees set in 1997.
- An extreme heat warning remains in effect until 8 p.m. Thursday, with highs expected around 108 degrees.
- Rain chances of roughly 20% arrive Friday night into Saturday, with temperatures dropping to near-normal 100-102 by early next week.
- Statewide temps are running 5 to 8 degrees above average, with overnight lows in the upper 80s across the region.
Phoenix set a new daily record warm low of 92 degrees Wednesday morning, surpassing the previous mark of 88 degrees set in 1997, according to Arizona's Family meteorologist Holly Bock. The record was independently confirmed by KTAR and FOX 10 Phoenix. The average overnight temperature for this time of year is 81 degrees.
An extreme heat warning remains in effect through 8 p.m. Thursday, a First Alert Weather Day, with highs forecast around 108 degrees. Temperatures statewide are running 5 to 8 degrees above average for this point in September, with overnight lows in the upper 80s. Dew points in the 60s are producing a muggy feel across the Phoenix metro; southern Arizona, including Yuma, is seeing dew points in the 70s, pushing feels-like temperatures higher still.
Thunderstorms developing Thursday are expected to stay concentrated over the higher terrain of eastern and southeastern Arizona, with some shower activity possible across Pinal County. Phoenix proper sees little relief until Friday night into Saturday, when rain chances reach approximately 20%.
A ridge of high pressure currently driving temperatures upward will be nudged by a trough moving into the northwestern United States, which is expected to limit significant monsoon activity over the weekend. By early next week, however, storm chances may improve depending on how quickly that trough pushes north. Temperatures are forecast to drop to near-normal levels of 100 to 102 degrees for the first half 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 09/09/2026 21:54
- ktar.com retrieved 09/09/2026 21:54
- Fox 10 Phoenix retrieved 09/09/2026 21:54
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 09/09/2026 21:54. Every claim traces to a source.
