In October, Flagstaff typically sees daytime highs of 18.4°C and overnight lows around 1.1°C. Compared to the annual average high of 16.9°C, October runs +1.6°C.
October in Flagstaff averages a daytime high of 18.4°C and an overnight low of 1.1°C.
October runs +1.6°C compared to Flagstaff's annual average high of 16.9°C, ranking #6 of 12 months by warmth.
Plan for daytime highs near 18.4°C and cooler evenings around 1.1°C.