PHOENIX, Ariz. – Morning air feels crisp now, but desert warmth is building fast across the Valley as Arizona settles into a stretch of classic late-fall sun. Sunday begins with clear skies and light winds before daytime highs reach the upper 80s, setting the stage for a steady climb into the low 90s by Tuesday.
According to the National Weather Service in Phoenix, high pressure over the Southwest will keep conditions dry and skies nearly cloudless through midweek. Winds remain light, mainly from the northeast at 5 to 10 mph, but a subtle pattern shift is expected by late Tuesday that could drop daytime highs several degrees heading toward Halloween. The NWS says the change will be gradual but noticeable—temperatures closer to the mid-80s by Thursday and upper 70s by Friday evening.
That timing means trick-or-treaters can expect mild but cooling air under mostly clear skies Friday night. Light jackets should do the job as readings fall through the 70s after sunset. Roads, including I-10 and Loop 101, should stay dry for evening events, though a few light gusts may stir dust across open desert spots west of the metro.
Residents planning yard work or Halloween setup should take advantage of calm mornings before the breeze returns late week. No rain is on the horizon yet, but models hint at cooler northwest flow early next week—a sign November could bring the season’s first real chill.
Five-Day Forecast for Phoenix, AZ:
Sun: 88/62 – Sunny, light east wind; pleasant fall warmth.
Mon: 88/63 – Bright and calm; very dry air.
Tue: 91/66 – Sunny, warmer; light breeze near I-10.
Wed: 91/65 – Mostly sunny; slight cooling trend begins.
Thu: 89/64 – Sunny; highs easing down ahead of Halloween.
