PHOENIX, Ariz. – Morning light glints off desert rooftops as another dry, calm start settles over the Valley of the Sun. Warm, steady air will hold through midweek, keeping the Phoenix area locked in a late-season pattern that feels more like early October than the approach of Halloween.
According to the National Weather Service in Phoenix, clear skies dominate this Tuesday through Thursday with highs around 90 to 91 degrees. Winds stay light—mostly out of the east and shifting westward through the afternoons—bringing just enough breeze to stir up dust along open stretches of I-10 and Loop 202. The pattern favors ideal air quality and stable travel conditions across Maricopa and Pinal counties.
By Thursday, subtle changes begin. A weak trough passing north of Arizona will bring slightly cooler air into the region, trimming highs into the low to mid-80s by Friday and into the weekend. The shift won’t be dramatic, but residents will notice cooler evenings and a return of those crisp desert mornings that signal fall’s quiet arrival.
No rain is expected through early next week, keeping the dry stretch intact. However, long-range models hint at a deeper cool push as the calendar nears Halloween—a potential early sign of Arizona’s first fall cold snap. Until then, it’s prime weather for outdoor events, trail runs, and evening walks before the true seasonal chill finally returns to the Valley.
Five-Day Forecast for Phoenix, AZ:
Tue: 90/62 – Sunny; light breeze, warm afternoon.
Wed: 91/62 – Mostly sunny; calm and dry.
Thu: 83/61 – Sunny; slight cooldown begins.
Fri: 85/63 – Bright skies; cooler breeze west.
Sat: 84/62 – Sunny; mild fall air returns.
