FLAGSTAFF, Ariz. — The early morning chill cuts sharply through the ponderosa pines as the first light breaks over the San Francisco Peaks. It’s a crisp, quiet start to Tuesday across northern Arizona, with clear skies and a slow, steady warm-up that will stretch into a pleasant Halloween week.
Flagstaff begins this Tuesday with temperatures in the mid-40s, but readings will tumble again tonight — dipping near 20°F under calm, clear conditions. Motorists along I-40 should expect icy windshields and frosty bridges before sunrise. It’s a good week to check outdoor plumbing, prep garden hoses, and layer up for the early morning commute.
By Wednesday, high pressure strengthens, pushing daytime highs into the mid-60s while keeping skies bright and winds light. Thursday and Friday continue the steady climb, with highs near 67–68°F, a touch warmer than average for late October. Breezes will remain gentle, making for ideal outdoor plans and early decorating weather ahead of the holidays.
Halloween Friday looks nearly perfect for trick-or-treaters across the high country — clear skies, temperatures around 60°F at dusk, and no threat of rain or wind.
The weekend will hold this calm pattern with highs in the upper 60s and plenty of sun. But models hint at a cooler trend by early next week — the kind that could bring the season’s first light snow to the higher peaks in early November.
Five-Day Outlook for Flagstaff, AZ:
Tue: 59/29 – Sunny; brisk, dry air.
Wed: 65/29 – Clear, calm, warming trend.
Thu: 67/37 – Sunny; mild afternoon.
Fri: 66/37 – Mostly sunny; perfect Halloween.
Sat: 68/40 – Sunny, pleasant weekend stretch.
