Flagstaff weather
in December
“Cool and moody. Best paired with warm rooms and long lunches.”
Roughly 5 rainy days across the month, on average.
In december, Flagstaff settles into its cold, contemplative stillness. The city keeps a different pulse than in summer or midwinter, and travellers who arrive with the right expectations are rewarded.
Days average around 7°C (45°F), cooling to -3°C after sunset. Rainfall is moderate — around 5 rainy days spread through the month. Long days of sunshine reward early starts.
These figures are climatological averages, drawn from a decade of daily records via the Open-Meteo Archive — not a forecast. But they are honest, and they are the sort of thing a good travel guide ought to tell you before you book the flight.
What to pack for Flagstaff in December
- •A properly warm coat — not a fashion piece
- •A merino base layer for the cold evenings
- •Comfortable, broken-in walking shoes
- •A small daypack that won't look like a tourist beacon
What to pack for Flagstaff in December
- →Lightweight fleeceAmazon · shop this
- →Merino travel socksAmazon · shop this
- →Reef-safe sunscreen SPF 50Amazon · shop this
- →Polarized sunglassesAmazon · shop this
- →Universal travel adapterAmazon · shop this
- →Compression packing cubesAmazon · shop this
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Where to stay in Flagstaff
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Flagstaff in December — FAQ
Q01Is December a good time to visit Flagstaff?
Is December a good time to visit Flagstaff?
It is a fair time to visit — expect variable conditions and plan flexibility. In December, Flagstaff averages a high of 7°C (45°F) and a low of -3°C (27°F), with 34mm of rainfall across roughly 5 rainy days.
Q02What is the average temperature in Flagstaff in December?
What is the average temperature in Flagstaff in December?
The average high temperature in Flagstaff during December is 7°C (45°F), with an average low of -3°C (27°F). These figures are averaged from ten years of daily records (2015–2024, Open-Meteo Archive).
Q03How many rainy days does Flagstaff have in December?
How many rainy days does Flagstaff have in December?
Flagstaff averages approximately 5 rainy days in December, with a total monthly rainfall of about 34mm. This is based on daily precipitation records where days with 1mm or more of rain are counted as rainy days.
Q04What should I pack for Flagstaff in December?
What should I pack for Flagstaff in December?
For Flagstaff in December, pack a warm winter coat, a merino base layer for evenings, comfortable walking shoes. These recommendations are based on the ten-year weather averages for this specific month.
Q05How crowded is Flagstaff in December?
How crowded is Flagstaff in December?
Tourist crowds in Flagstaff during December are typically low — winter is off-season, meaning quiet streets and better hotel deals. Consider this when planning accommodation — prices track crowd levels closely.