Weather in Flagstaff: August
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Average day temperature: | 78.7°F |
| Average night temperature: | 63.3°F | |
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Number of sunny days: | 15 days |
| Day length: | 12.9 - 13.9 hours | |
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Number of rainy days: | 4 days |
| Precipitation totals: | 1.7 in. | |
| more information | ||
14 days
forecast
forecast
| Flagstaff |
weather in
September
September
| Flagstaff |
Air temperature in August, °F
Show year:
2026
2025
2024
The highest day temperature during August of 2026 was 89°F. At the same time the lowest night temperature was 53°F. Daily and nightly averages during August were 77.6°F and 62.6°F.
Sunny, partly cloudy and cloudy days
Mostly all days in August are sunny but cloudy days are also possible.
Precipitation total in August, in.
Precipitation total value in Flagstaff in August is 1.7 in. Other months of the year show relatively similar values.
Wind speed in August, mph
The average wind speed value in August is 5.8 mph It makes August lest windy month of the year.
Average sunny hours
This chart shows average number of hours during the day when sunlight can reach the ground. It depends on day length and cloudiness during the day. The average number of sunny hours in August is: 8.8.
Best time for vacation in Flagstaff
Flagstaff on a weather map
Places in USA:
Name
°F
24 Hours Forecast
Flagstaff
Local time: 13:19
September 16, wednesday
1500
61°F
N
7 mph
7 mph
1800
59°F
NW
3 mph
3 mph
2100
57°F
NW
5 mph
5 mph
September 17, thursday
0000
54°F
NW
3 mph
3 mph
0300
54°F
W
2 mph
2 mph
0600
50°F
N
1 mph
1 mph
0900
59°F
NE
5 mph
5 mph
1200
66°F
NE
7 mph
7 mph
