Weather in Flagstaff
What's the weather like in Flagstaff?
Flagstaff has a wide swing between hot summers and cold winters and moderate rainfall spread across the year. Average daytime highs range from 6°C (42°F) in January to 28°C (83°F) in July, with overnight lows around -4°C (24°F) and 16°C (60°F) respectively.
For comfortable sightseeing temperatures (18–26°C daytime highs), the best months to visit Flagstaff are May through June, and August through October.
Quick facts
- Country
- 🇺🇸 United States
- Region
- North America
- Time zone
- America/Phoenix
- Coordinates
- 35.198, -111.651
Monthly climate
Long-run averages for each month of the year.
| Month | Avg high | Avg low | Rainfall | Rain days | Snow days |
|---|---|---|---|---|---|
| January | 6°C / 42°F | -4°C / 24°F | 48 mm | 7 | — |
| February | 8°C / 46°F | -3°C / 26°F | 44 mm | 5 | — |
| March | 11°C / 51°F | -1°C / 31°F | 51 mm | 7 | — |
| April | 17°C / 62°F | 3°C / 38°F | 15 mm | 4 | — |
| May | 20°C / 68°F | 7°C / 44°F | 30 mm | 7 | — |
| June | 28°C / 82°F | 13°C / 56°F | 11 mm | 3 | — |
| July | 28°C / 83°F | 16°C / 60°F | 72 mm | 13 | — |
| August | 27°C / 80°F | 15°C / 58°F | 71 mm | 12 | — |
| September | 24°C / 75°F | 12°C / 54°F | 39 mm | 7 | — |
| October | 18°C / 64°F | 6°C / 43°F | 27 mm | 6 | — |
| November | 12°C / 53°F | 1°C / 34°F | 29 mm | 4 | — |
| December | 6°C / 44°F | -3°C / 27°F | 41 mm | 6 | — |
Flagstaff by month
Detailed weather for any specific month:
Seasonal patterns to know
Atlantic hurricane season runs June–November (peak August–October). Tropical storms and hurricanes are possible — peak risk is August–October.
Cities with a similar climate to Flagstaff
Frequently asked questions
When is the best time to visit Flagstaff?
The most comfortable months in Flagstaff are usually May, September, October, when average highs sit near 18–26°C (64–79°F) with relatively little rain. See the full month-by-month breakdown for the exact figures.
What is the hottest month in Flagstaff?
July is typically the hottest month in Flagstaff, averaging a high of 28°C (83°F).
What is the coldest month in Flagstaff?
January is usually the coldest, with average lows around -4°C (24°F).
Does it snow in Flagstaff?
Snow is rare in Flagstaff; the climate data shows essentially no snowfall across the year.
Live forecast, sunrise/sunset, and more.