Flagstaff (Grand Canyon) weather in December
Temperature, rain and sunshine in December: long-term averages from 30 years of weather data, not a forecast.
Holiday weather in December
Poor
Best time to visit: April – June, September – October
What is the weather like in Flagstaff (Grand Canyon) in December?
In December, Flagstaff (Grand Canyon) is cold: daytime highs average 6 °C, and nights often drop below freezing (−3 °C). Expect around 6 hours of sunshine a day. Rain falls on about 5 days, adding up to 28 mm. Snow falls on about 4 days. All in all, December is not an ideal month for a holiday in Flagstaff (Grand Canyon).
December compared
How the weather changes from November to January. Tap a month to open it.
| NovemberNov | DecemberDec | JanuaryJan | |
|---|---|---|---|
| Score | 62 | 36 | 38 |
| Day | 12° | 6° | 6° |
| Night | 2° | −3° | −4° |
| Sun | 7 h | 6 h | 6 h |
| Rain days | 3 | 5 | 5 |
More details for December
- Daylight
- 9 h 48 min07:27 – 17:16
- UV index
- 3 · moderateclear sky, noon (estimate)All months
- Muggy days
- 0 daysdew point 18 °C or moreAll months
- Wind
- 16 km/haverage daily peakAll months
- Cloud cover
- 42 %on averageAll months
- Hot days
- 0 days30 °C or moreAll months
- Snow days
- 4 days1 cm or more of fresh snowAll months
- Time zone
- UTC−7America/Phoenix
How the score comes together
- Temperatureweight 50 %0 %
- Sunshineweight 20 %43 %
- Few rainy daysweight 30 %92 %
Each factor is rated from 0 to 100 % and weighted for the travel style “Nature escape”.
What to pack in December
- Warm jacket
- Hat, scarf & gloves
Flagstaff (Grand Canyon) in December: quick answers
Is Flagstaff (Grand Canyon) hot in December?
No. In December, Flagstaff (Grand Canyon) is cold: daytime highs average 6 °C and nights drop to about −3 °C.
Does it rain much in Flagstaff (Grand Canyon) in December?
Rain falls on about 5 days, adding up to 28 mm.
Flagstaff (Grand Canyon) month by month
The whole year in Flagstaff (Grand Canyon)All destinations: USAWhere to go in December
Climate averages 1996–2025, not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, WMO 1991–2020 (NOAA NCEI), GeoNames (CC BY 4.0). Sources & licences