Highlights
- Arizona's monsoon season began June 15, running through September 30.
- Phoenix saw passing showers and storms on the season's opening day, an unusual early start.
- ABC15 and AZFamily both reported scattered showers and thunderstorms across the Valley and central Arizona Monday morning.
- The National Weather Service's Phoenix office flagged additional storm chances developing over northern and southeastern Arizona.
Arizona's monsoon season opened Monday with passing showers and storms across the Phoenix area, an atypical start to a season that FOX 10 meteorologist Krystal Ortiz described as departing from the norm.
The official season runs June 15 through September 30, a fixed window established by the National Weather Service. Storms typically build over higher terrain before pushing into the Valley later in the season; Monday's early activity was notable for arriving on day one.
ABC15 and AZFamily both reported scattered showers and thunderstorms across the Valley and central Arizona Monday morning. The NWS Phoenix office noted additional rounds of scattered showers and thunderstorms expected to develop over northern Arizona high terrain and southeastern Arizona through the afternoon.
A seasonal outlook published by the NWS Tucson office in May projected above-normal precipitation for Phoenix and Tucson through July, August, and September.
Residents should monitor NWS alerts as storm activity is expected to continue through the afternoon.
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 16/06/2026 00:13
- weather.gov retrieved 16/06/2026 00:13
- ABC15 Arizona retrieved 16/06/2026 00:13
- AZ Family (3TV/CBS5) retrieved 16/06/2026 00:13
- weather.gov retrieved 16/06/2026 00:13
- weather.gov retrieved 16/06/2026 00:13
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 16/06/2026 00:13. Every claim traces to a source.
