Weather in Flagstaff: December
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Average day temperature: | 44.2°F |
| Average night temperature: | 32.4°F | |
 |
Number of sunny days: | 19 days |
| Day length: | 9.8 - 10.0 hours | |
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Number of days with precipitation: | 2 days |
| Precipitation totals: | 0.7 in. | |
| more information | ||
14 days
forecast
forecast
| Flagstaff |
weather in
January
January
| Flagstaff |
Air temperature in December, °F
Show year:
2025
2024
2023
The highest day temperature during December of 2025 was 60°F. At the same time the lowest night temperature was 24°F. Daily and nightly averages during December were 48.9°F and 38.6°F.
Sunny, partly cloudy and cloudy days
Mostly all days in December are sunny but cloudy days are also possible.
Precipitation total in December, in.
Precipitation total value in Flagstaff in December is 0.7 in. Other months of the year show relatively similar values.
Wind speed in December, mph
The average wind speed value in December is 6.4 mph It makes December one of the least windy months 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 December is: 6.9.
Best time for vacation in Flagstaff
Flagstaff on a weather map
Places in USA:
Name
°F
24 Hours Forecast
Flagstaff
Local time: 19:42
January 06, tuesday
2100
39°F
N
2 mph
2 mph
January 07, wednesday
0000
37°F
NE
2 mph
2 mph
0300
36°F
E
2 mph
2 mph
0600
34°F
E
2 mph
2 mph
0900
34°F
NE
3 mph
3 mph
1200
37°F
NE
9 mph
9 mph
1500
37°F
NE
7 mph
7 mph
1800
36°F
E
4 mph
4 mph
