FLAGSTAFF, Ariz. – Drivers in northern Arizona should prepare for a shift Wednesday as storms and cooler air edge closer to Flagstaff. While Tuesday stays sunny and warm, conditions begin to change by late Wednesday night, with storm chances returning Thursday and continuing into the weekend. Travel on I-40 and surrounding mountain highways could be affected by sudden downpours, gusty winds, and slick pavement.
According to the National Weather Service in Flagstaff, Wednesday will bring highs near 82 under mostly sunny skies before clouds build overnight. By Thursday morning, storm chances increase across Coconino County, with scattered showers expected after 11 a.m. Afternoon highs will only reach 77, and winds from the southwest could gust up to 22 mph.
Thunderstorms Thursday night may linger into early Friday. Forecasters warn of localized flooding in low-lying areas and possible delays for commuters. Friday brings the highest storm risk, with showers likely throughout the day and a cooler high of just 74. Campers, hikers, and drivers in the San Francisco Peaks should stay alert for lightning and sudden changes in weather.
By Saturday, another round of storms is possible with breezy conditions, while Sunday offers a slight break. Temperatures remain seasonable but cooler than earlier this week, making fall-like weather more noticeable.
Residents should charge devices, monitor local alerts, and avoid unnecessary mountain travel during storms. Warnings and advisories may continue as moisture lingers into early next week.
Five-Day Forecast for Flagstaff, AZ
- Wednesday: Mostly sunny, high 82, low 46. Clouds increase overnight.
- Thursday: Storm chance after 11 a.m., high 77, breezy. Night storms possible.
- Friday: Showers likely, high 74, storm chances into evening.
- Saturday: Partly sunny, storm risk after 11 a.m., high 75, breezy.
- Sunday: Mostly clear, slight storm chance, high 76, low 47.
