Arizona — Frost clings to windshields at sunrise, then fades fast as bright high-country sun pushes temperatures upward before lunchtime.
According to the National Weather Service, Flagstaff warms from near 30–32° early this morning to about 64° this afternoon, with a brief window for patchy frost across neighborhoods like Doney Park, Kachina Village, and downtown Flagstaff.
This is part of a broader spring transition pattern across northern Arizona, where clear skies allow rapid overnight cooling followed by quick daytime warming.
The most impactful window runs from 6 a.m. to 9 a.m., when cold pavement and frost create slick spots, especially on bridges and shaded stretches of I-40 and Route 89. Low-lying areas near wooded terrain and rural roads may see the most persistent frost.
By late morning, conditions improve quickly as sunlight dries roads and visibility remains clear. However, the sharp temperature swing can stress vehicles and outdoor plans, requiring layers early and lighter clothing later.
A slight chance of sprinkles develops after 2 p.m., but impacts remain minimal with dry ground absorbing any light moisture.
Looking ahead, Saturday and Sunday bring highs in the mid to upper 60s, with a small chance of afternoon thunderstorms Sunday that could briefly reduce visibility and create gusty winds along I-17.
Next week trends cooler, with highs dipping toward the upper 50s by Tuesday and increasing chances for showers.
Drivers should watch for early slick patches this morning and allow extra braking distance until temperatures rise above freezing.
