Measurements:
°C
°F
Flagstaff
64°F
N 9 mph
Feels like: 64°F
Precip: 20%
World Resorts USA Flagstaff Weather August Weather in Flagstaff

Flagstaff Weather: August

Average Day Temperature: 81.9°F
Average Night Temperature: 64.7°F
Number of Sunny Days: 15 days
Sunshine Hours: 12.9 - 13.9 hours
Number of Rainy Days: 4 days
Precipitation Totals: 1.7 in

Air Temperature in August, °F

Select Year: 2026 2025 2024

The highest day temperature in August 2026 was 94°F. The lowest night temperature was 54°F. The average values for day and night temperatures during August were 80.7°F и 64.0°F respectivly.

Sunny, Cloudy and Gloomy days

Most of the days in August are sunny but you can also expect cloudy and gloomy days.

Precipitation Totals in August, in

Precipitation total in August for Flagstaff is 1.7 in. It makes august one of the most rainy months of the year.

Wind Speed in August, mph

The average wind speed in August is 5.8 mph. It makes August the most windless month of the year for Flagstaff.

Average Sunny Hours Per Day

We are using day length and cloud cover information for each day of the month to calculate averages for this chart. Average sunny hours for Flagstaff in August is 9.0 hours.

Best Time to Visit Flagstaff
The most sunny months:
October 25 days
May 25 days
June 23 days
The most warm months:
July 84.6 °F
August 81.9 °F
June 81.4 °F
The most cold months:
January 38.7 °F
February 42.5 °F
December 43.6 °F
The most rainy months:
August 4 days
July 4 days
October 2 days
The most windy months:
April 9 mph
May 9 mph
March 9 mph

Flagstaff on the Weather Map

USA Resorts:
NAME
Boston +64
Chicago +66
Hawaii +80
Las Vegas +80
Los Angeles +74
Maui +66
Miami +92
Myrtle Beach +88
New York +72
Panama City Beach +90
San Diego +72
San Francisco +60
Santa Monica +72
Sarasota +94
Washington +76
24 Hours Weather Forecast
Flagstaff
Local time: 08:07
15 sep, tuesday
0900 64°F
N
9 mph
1200 72°F
NE
11 mph
1500 70°F
NE
12 mph
1800 64°F
NE
9 mph
2100 58°F
NE
2 mph
16 sep, wednesday
0000 56°F
N
2 mph
0300 54°F
N
2 mph
0600 56°F
N
2 mph