Flagstaff, AZ Weather & Climate Normals
What a normal year in Flagstaff actually looks like
On the 30-year record NOAA keeps for Flagstaff, AZ, the comfort score comes out to 38/100, weather-driven: Heat, cold, snow, or rainfall here are heavy enough that they shape daily life for a large part of the year. Only 4 months a year land in the 55–75°F range this site treats as mild.
How much Flagstaff's weather actually swings
Average temperatures in Flagstaff run from 30°F in Dec up to 67°F in Jul, a 36.7°F seasonal swing, a middling gap by national standards.
Flagstaff, month by month
| Month | Avg high | Avg low | Precip | Snow |
|---|---|---|---|---|
| Jan | 43°F | 18°F | 2.05in | 20.9in |
| Feb | 46°F | 20°F | 2.17in | 19.3in |
| Mar | 52°F | 24°F | 1.88in | 15.6in |
| Apr | 59°F | 28°F | 0.89in | 5in |
| May | 68°F | 35°F | 0.77in | 1.1in |
| Jun | 79°F | 43°F | 0.3in | 0in |
| Jul | 82°F | 51°F | 2.61in | 0in |
| Aug | 79°F | 51°F | 3.04in | 0in |
| Sep | 74°F | 43°F | 1.84in | 0in |
| Oct | 64°F | 32°F | 1.52in | 1.5in |
| Nov | 52°F | 23°F | 1.55in | 8.2in |
| Dec | 43°F | 17°F | 1.9in | 18.5in |
If you're timing a visit, Jun, Jul, Aug, and Sep are Flagstaff's mildest stretch; if you're moving there, you should plan around Dec's cold instead.
How wet Flagstaff actually gets
Over a typical year, Flagstaff sees about 20.52in of precipitation a year across roughly 82 days with measurable rain or snow, with 90.1in of snow a year.
Flagstaff against the rest of the country
Out of 4876 cities scored here, Flagstaff comes in at 4683; within AZ alone it ranks 57 of 57. Population is about 77,539.
Checking the actual forecast
These figures come from Flagstaff Pulliam Ap, AZ US, the NOAA station 3.8 miles from Flagstaff, averaged over 30 years, not tomorrow's forecast.
More on how this is worked out
Why some cities show no snow or rain figure · What a 30-year climate normal actually is