Flagstaff, Arizona 

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Climate in Flagstaff, Arizona

Flagstaff, Arizona gets 21 inches of rain, on average, per year. The US average is 38 inches of rain per year.

Flagstaff averages 81 inches of snow per year. The US average is 28 inches of snow per year.

On average, there are 266 sunny days per year in Flagstaff. The US average is 205 sunny days.

Flagstaff gets some kind of precipitation, on average, 83 days per year. Precipitation is rain, snow, sleet, or hail that falls to the ground. In order for precipitation to be counted you have to get at least .01 inches on the ground to measure.

Weather Highlights

Summer High: the July high is around 82 degrees
Winter Low: the January low is 14
Rain: averages 21 inches of rain a year
Snow: averages 81 inches of snow a year


The annual BestPlaces Comfort Index for Flagstaff is 6.9 (10=best), which means it is one of the least comfortable places in Arizona.

8.8 / 5.1

Summer   /   Winter
June, August and July are the most pleasant months in Flagstaff, while January and February are the least comfortable months.

Climate Averages
  Flagstaff, ArizonaUnited States
  20.7 in.38.1 in.
  81.0 in.27.8 in.
  83.4 days106.2 days
  266 days205 days
  6903 ft.2443 ft.


Many people confuse weather and climate but they are different. Weather is the conditions of the atmosphere over a short period of time, and climate is how the atmosphere is over long periods of time.

Weather is how the atmosphere is behaving and its effects upon life and human activities. Weather can change from minute-to-minute. Most people think of weather in terms of temperature, humidity, precipitation, cloudiness, brightness, visibility, wind, and atmospheric pressure.

Climate is the description of the long-term pattern of weather in a place. Climate can mean the average weather for a particular region and time period taken over 30 years. Climate is the average of weather over time.

July is the hottest month for Flagstaff with an average high temperature of 81.7°, which ranks it as one of the coolest places in Arizona. In Flagstaff, there are 4 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Flagstaff are June, August and July.

In Flagstaff, there are 3.4 days annually when the high temperature is over 90°, which is one of the coolest places in Arizona.

January has the coldest nighttime temperatures for Flagstaff with an average of 14.3°. This is one of the coldest places in Arizona.

In Flagstaff, there are 210.5 days annually when the nighttime low temperature falls below freezing, which is one of the coldest places in Arizona.

In Flagstaff, there are 7.8 days annually when the nighttime low temperature falls below zero°, which is one of the coldest places in Arizona.

Humidity is very low in Flagstaff, so low that the dry air may be uncomfortable for some people. There are few days during the year when the humidity is even noticable. A very dry climate can lead to cracked, itchy skin and dry eyes.

August is the wettest month in Flagstaff with 3.3 inches of rain, and the driest month is June with 0.3 inches. The wettest season is Autumn with 29% of yearly precipitation and 17% occurs in Summer, which is the driest season. The annual rainfall of 20.7 inches in Flagstaff means that it is wetter than most places in Arizona.

August is the rainiest month in Flagstaff with 13.8 days of rain, and June is the driest month with only 2.8 rainy days. There are 83.4 rainy days annually in Flagstaff, which is one of the rainiest places in Arizona. The rainiest season is Autumn when it rains 34% of the time and the driest is Summer with only a 20% chance of a rainy day.

An annual snowfall of 81.0 inches in Flagstaff means that it is one of the snowiest places in Arizona. January is the snowiest month in Flagstaff with 19.1 inches of snow, and 8 months of the year have significant snowfall.

  • Annual Rainfall (US Avg: 36.5")
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    Reviews for Flagstaff    49 Reviews
    Cost of living is outrageous - 6/29/2022
    I've lived here for one year and have to move because the cost to rent here is astronomical. I've been paying $2550/month and now for a comparable home it is $2900 and... Read More
    Leah |  | Reply | 1 Reply

    Start Your Review of Flagstaff

    Small city feel and beautiful outdoors - 11/25/2019
    Every place depends on what you are looking for. So I will say a bit about me so you can assess where the review is coming from. I am a professional, single, female... Read More

    Not perfect, but pretty darned nice. - 11/16/2019
    Flagstaff is a city that enjoys clean air, a mild four season climate and abundant natural beauty. Nestled near the San Francisco Peaks, approximately 50 miles south of... Read More

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