Flagstaff (Route 66) in december: average Weather, Temperature and Climate
Weather in Flagstaff (Route 66) in december 2026
The weather in Flagstaff (Route 66) in the month of december comes from statistical datas on the last years. You can view the weather statistics the entire month, but also by using the tabs for the beginning, the middle and the end of the month.
Average weather throughout december
very bad weather 427.2cm
Weather at 6am
29°F
Clear/Sunny
62% of time
16%
12%
5%
Weather at 12pm
41°F
Clear/Sunny
67% of time
14%
13%
7%
Weather at 6pm
38°F
Clear/Sunny
63% of time
17%
16%
4%
Weather at 3am
31°F
60%
18%
13%
5%
Evolution of daily average temperature and precipitation in Flagstaff (Route 66) in december
These charts show the evolution of average minimum/maximum temperatures as well as average daily precipitation volume in Flagstaff (Route 66) in december.
The climate of Flagstaff (Route 66) in december is very bad
In december in Flagstaff (Route 66), the climate is relatively dry (with 2.3in of rainfall over 3 days). It should be noted a worsening from the previous month since in november there is an average of 1.4in of precipitation over 2 days.
The climate is rather cold in this city this month. Plan to cover you well! Temperatures are up to 43°F. The minimum is 29°F. Thus, the mean temperature average in december in Flagstaff (Route 66) is 36°F. Note that seasonal normals in contrast with those observed in Flagstaff (Route 66) in december with a maximum record of 67°F in 2021 and a minimum record of 5°F in 2009. You can expect to have about 23 days with temperatures under 32°F, or 74% of the month.
In december in Flagstaff (Route 66), the days on average last 09:48. The sun rises at 07:28 and sunset is at 17:16.
December: another location in the United States (USA)?
If you want to go to the United States (USA) in december, there are destinations with better weather than Flagstaff (Route 66):
In december, Miami (Florida) has perfect weather.
Furthermore, Hawaii (Honolulu), Houston, Myrtle Beach, Phoenix (Arizona), Carolina Beach and Dauphin Island (Alabama) have good weather.
Finally, California, Louisiana, Atlanta, Dallas, Austin and Big Bend National Park (Texas) have a tolerable climate, but better than Flagstaff (Route 66).
Seasonal average climate and temperature of Flagstaff (Route 66) in december
Check below seasonal norms These datas are set from the weather statements of the past years of december.
| December | |||||
| Outside temperature | |||||
| Average temperature | 36°F | ||||
| Highest temperature | 43°F | ||||
| Lowest temperature | 29°F | ||||
| Highest record temperature | 67°F (2021) | ||||
| Lowest record temperature | 5°F (2009) | ||||
| Number of days at +65°F | 0 day(s) (0%) | ||||
| Number of days at -32°F | 23 day(s) (74%) | ||||
| Wind | |||||
| Wind speed | 17km/h | ||||
| Wind temperature | 22°F | ||||
| Precipitation (rainfall) | |||||
| Rainfall | 2.3in | ||||
| Number of days with rainfall | 3 day(s) (11%) | ||||
| Record daily rainfall | 1.8in (2021) | ||||
| Snowfall | 427.2cm | ||||
| Other climate data | |||||
| Humidity | 69% | ||||
| Visibility | 8.91km | ||||
| Cloud cover | 24% | ||||
| UV index | 2 | ||||
| Daily sunshine hours | 9 | ||||
| Sunrise and sunset | |||||
| Time of sunrise | 07:28 | ||||
| Time of sunset | 17:16 | ||||
| Length of day | 09:48 | ||||
| Our opinion about the weather in december | |||||
| Our opinion at whereandwhen.net | very bad | ||||
How was the weather last december?
Here is the day by day recorded weather in Flagstaff (Route 66) in december 2025:
31°F to 41°F
29°F to 43°F
31°F to 38°F
27°F to 41°F
31°F to 49°F
38°F to 52°F
34°F to 50°F
40°F to 50°F
38°F to 58°F
43°F to 56°F
43°F to 61°F
45°F to 61°F
47°F to 61°F
43°F to 56°F
45°F to 59°F
43°F to 58°F
45°F to 59°F
43°F to 59°F
45°F to 56°F
40°F to 50°F
40°F to 50°F
45°F to 58°F
47°F to 52°F
43°F to 45°F
40°F to 43°F
38°F to 40°F
32°F to 36°F
25°F to 29°F
25°F to 38°F
31°F to 40°F
36°F to 45°F
Map: other cities in the United States (USA) in december
Cities near Flagstaff (Route 66):
| Grand Canyon in december | very bad weather |
| Havasu Falls (Arizona) in december | very bad weather |
| Page (Arizona) in december | very bad weather |
| Phoenix (Arizona) in december | good weather |
| Monument Valley in december | very bad weather |
| Lake Havasu City in december | tolerable weather |
| Zion National Park in december | very bad weather |
| Bryce Canyon in december | very bad weather |
| Laughlin in december | very bad weather |
| Tucson in december | tolerable weather |
| Las Vegas in december | very bad weather |
| Mesa Verde National Park (Colorado) in december | very bad weather |
Click over cities on the map for information about the weather in december.
Flagstaff (Route 66)
perfect weather
good
tolerable
bad
very bad
Weather data for Flagstaff (Route 66) in december:
Weather data for Flagstaff (Route 66) for december are derived from an average of the weather forecast since 2009 in Flagstaff (Route 66). There is a margin of error and these forecasts are to be considered as general information only. The weather in Flagstaff (Route 66) can vary slightly from year to year, but this data should limit surprises. So you can pack your bags or check for the best time in year to go to Flagstaff (Route 66).