Flagstaff weather
Ten-year climate averages, month by month
Flagstaff in august
Current month averages, based on ten years of records. Read the full guide →
Flagstaff sits at 35°11′N 111°39′W in United States, in North America. Its climate profile is shaped by these coordinates — and the ten years of records below reveal exactly how each season feels on the ground.
Below, you'll find monthly averages for temperature, rainfall and sunshine, drawn from the Open-Meteo Archive. Every month links to a full guide with what to pack, where to stay, and when to arrive.
The year in weather
Flagstaff weather by month
Pick a month for the full climate guide — temperature, rainfall, sunshine, packing tips and hotel deals for Flagstaff.
Places that feel like Flagstaff in august
Flagstaff weather — FAQ
Q01When is the best time to visit Flagstaff?
When is the best time to visit Flagstaff?
The best months to visit Flagstaff are April, May, June, July. Ten-year daily records show these months hold the most stable mix of temperature, rainfall and sunshine.
Q02What is the hottest month in Flagstaff?
What is the hottest month in Flagstaff?
July runs the highest averages in Flagstaff, with typical daytime highs of 29°C (83°F). Plan around midday and consider accommodation with reliable cooling.
Q03What is the coldest month in Flagstaff?
What is the coldest month in Flagstaff?
January brings the lowest averages, with daytime highs near 5°C (41°F). Layer up and expect shorter daylight hours if you plan sightseeing.
Q04Which month has the most rain in Flagstaff?
Which month has the most rain in Flagstaff?
August typically records the highest monthly rainfall — around 58mm on average. Plan indoor alternatives and pack proper rain gear if visiting this month.
Q05What is the climate like in Flagstaff?
What is the climate like in Flagstaff?
Flagstaff, United States has warm summers, cold winters. You can read the detailed month-by-month breakdown on this page.