Flagstaff Average Temperature by Month

This page shows the average temperature in each month of the year in Flagstaff, Arizona. It is based on NOAA data for the years 1991–2020.
What's the Hottest Month in Flagstaff?
In Flagstaff, Arizona, the warmest month is July, with an average daily high temperature of 82.0 °F and an average low of 51.3 °F.
What's the Coldest Month in Flagstaff?
In Flagstaff, Arizona, the coolest month is January, with an average daily high temperature of 43.4 °F and an average low of 17.7 °F.
Month Avg. High Avg. Low
January 43.4 °F 17.7 °F
February 45.7 °F 19.7 °F
March 52.4 °F 23.9 °F
April 59.2 °F 28.2 °F
May 68.0 °F 34.7 °F
June 79.1 °F 42.3 °F
July 82.0 °F 51.3 °F
August 79.3 °F 50.5 °F
September 74.1 °F 42.5 °F
October 63.6 °F 31.5 °F
November 52.2 °F 23.1 °F
December 43.1 °F 17.0 °F
Year 61.9 °F 31.9 °F
Weather Station Details
Years Station Coordinates
1893–2024 Flagstaff Pulliam Airport location
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