Weather & Best Time to Visit in Flagstaff

Best time to visit Flagstaff

Late May through early September for hiking and festivals; late September–October for fall foliage and lighter crowds.. Late May–September: Humphreys Peak trails are snow-free, summer festivals are active, weather is warm and dry before monsoon season (July–Sept). Late Sept–Oct: aspen foliage on the San Francisco Peaks peaks, crowd pressure drops, prices ease, and the Festival of Science and Pickin' in the Pines provide anchor events

Flagstaff weather by month

MonthHigh (°F)Low (°F)Notes
Jan4224crisp & mostly dry
Feb4426crisp & mostly dry
Mar5231cool & mostly dry
Apr6137mild & mostly dry
May7045mild & mostly dry
Jun8256warm & sunny
Jul8361warm & changeable
Aug8059warm & changeable
Sep7454warm & mostly dry
Oct6444mild & mostly dry
Nov5334cool & sunny
Dec4326crisp & mostly dry