Mesa, Ariz. – The East Valley wakes under a calm, hazy dawn — that classic desert stillness before another round of sun takes hold. Skies stretch clear and golden this Monday morning as Mesa settles into what could be the final stretch of 90-degree heat this fall.
The National Weather Service in Phoenix calls for sunshine and stability through midweek. Monday’s high should top out near 88°F, followed by a Tuesday surge to around 90°F under bright skies and light east winds. The warmth won’t break any records, but it’s enough to make the afternoons feel more like late summer than mid-October.
Residents should plan outdoor work or errands for early in the day when air quality is best and temperatures still hover in the 70s. While no weather alerts are active, officials remind residents to stay hydrated — particularly for workers and hikers using trails around Usery Mountain Park or San Tan.
By Wednesday, the ridge of high pressure begins to ease. Temperatures fall back to the low 80s by Thursday and Friday, marking the start of a more seasonable pattern. Winds may turn slightly breezy by the weekend, helping nudge in cooler desert air.
Looking ahead, models hint at further cooling into next week — perhaps the first sign that Arizona’s fall transition is finally setting in for the Valley.
Five-Day Outlook for Mesa, AZ:
Mon: 88/61 – Sunny, calm.
Tue: 90/65 – Mostly sunny, hot.
Wed: 90/60 – Mostly sunny, light breeze.
Thu: 83/60 – Sunny, cooler trend.
Fri: 85/61 – Pleasant, sunny skies.
