Highlights
- Phoenix temperatures are forecast to climb well above 110 degrees as high pressure builds over the Southwest.
- Rising humidity will accompany the heat, creating unusually sticky conditions for the Valley.
- The National Weather Service notes temperatures are expected to peak 6 to 10 degrees above normal by Thursday.
- Multiple forecasters including NWS Phoenix, FOX 10, and Weather Underground are tracking the same pattern.
Phoenix is headed into a stretch of 110-plus-degree heat with rising humidity, as high pressure builds over the Southwest and pushes temperatures well above seasonal norms, FOX 10 meteorologist Krystal Ortiz reported Tuesday.
The combination of climbing temperatures and increasing moisture will create what Ortiz described as a "hot and sticky period for the Valley", a departure from the typically dry heat that defines early-summer Phoenix.
The National Weather Service forecast office in Phoenix corroborates the outlook, noting that temperatures are expected to peak 6 to 10 degrees above normal by Thursday. NWS also flagged increasing moisture driving isolated and scattered thunderstorm activity across Arizona's higher terrain later in the week.
Residents should expect the heat to intensify through the midweek period. NWS Phoenix last updated its regional map Monday, June 22.
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 23/06/2026 15:08
- weather.gov retrieved 23/06/2026 15:08
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 23/06/2026 15:08. Every claim traces to a source.
