Climate & Weather in Glendale
Glendale shares metro Phoenix's low-desert hot desert climate in full -- extreme, increasingly severe summer heat and mild, dry winters -- along with the region's real monsoon-season flash-flood and dust-storm exposure, concentrated in a fixed summer window rather than spread evenly across the year.
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Learn moreExtreme, well-documented summer heat
As part of the low-desert Phoenix metro, Glendale sees mild, dry winters -- a major part of the region's draw -- against extreme, increasingly severe summer heat: Phoenix set a record of 113 consecutive days at or above 100°F during 2023, and Maricopa County Public Health has documented several hundred confirmed or suspected heat-associated deaths in recent summers, per the fuller figures cited in arizona-tier-a-1.js's phoenix record. Humidity stays low year-round outside the monsoon window.
The North American Monsoon (June 15-September 30) is the state's defining wet-season hazard
Arizona's fixed monsoon window produces more than half the state's annual precipitation, concentrated mid-July through mid-August. Flash flooding is a genuine, recurring hazard during monsoon storms in Glendale as much as anywhere in the low desert, because arid soil can't absorb heavy rainfall quickly -- storms tens of miles away can send fast-moving water into washes and low-lying roads on an otherwise sunny day.
Haboob dust storms are a real, distinct desert-specific hazard
Monsoon storms in the Phoenix metro, including Glendale, can generate haboobs -- large, fast-moving walls of dust that dramatically reduce visibility with little warning, a genuinely distinct driving and outdoor-activity hazard specific to this desert climate, not a feature of the humid-subtropical severe-thunderstorm/tornado corridors covered for other states in this dataset.
No hurricane wind exposure and no meaningful tornado-risk profile
Glendale carries none of the hurricane wind/storm-surge risk or the tornado-corridor risk profile used for other states in this project -- Arizona's dominant weather hazards are extreme heat and monsoon-driven flash flooding/dust storms specifically, a genuinely different hazard mix that should not be described using either of those other frameworks.
Key takeaways
- Glendale shares metro Phoenix's hot desert climate in full: mild, dry winters against extreme, increasingly severe summer heat (Phoenix's 2023 record of 113 consecutive days at or above 100°F).
- Arizona's fixed June 15-September 30 monsoon window brings the state's heaviest rainfall and a real, recurring flash-flood risk to Glendale, since arid soil can't absorb heavy rain quickly.
- Haboob dust storms -- large, fast-moving walls of dust that sharply cut visibility -- are a real, distinct monsoon-season hazard specific to this desert climate.
- Glendale has no hurricane wind/storm-surge exposure and no meaningful tornado-risk profile -- do not apply either framing here; extreme heat and monsoon flooding/dust are the real, dominant hazards.
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