Weather in Flagstaff in December
Flagstaff, United States averages a high of 5.9°C (42.6°F) and low of -3.6°C (25.5°F) in December, with 5 rain days and 8.4 hours of daily sunshine. Travel score: 63.9/100 (Good). The best time to visit Flagstaff is June.
High
6°C43°F
Low
-4°C26°F
🌧️
5
rain days
☀️
8.4
hrs/day sunshine
💧
59%
humidity
64— Good
December in Flagstaff is cold and mostly dry — bundle up and enjoy the cool weather.
What are the average temperatures in Flagstaff?
How much does it rain in Flagstaff in December?
Flagstaff receives an average of 37.2mm of rainfall across 5 rainy days in December. The annual total is 552.2mm.
What should I pack for Flagstaff in December?
Essentials
👟
Comfortable walking shoes
Essential for exploring the city
🧥
Warm coat
Cool weather with highs around 6°C
🧶
Sweaters and warm layers
Layer up for comfort
🧤
Warm gloves
Cold nights around -4°C
🧣
Warm scarf
Protect against cold winds
Traveling to United States in December?
Don't let a public holiday surprise you — restaurants, shops, and attractions may be closed.
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Data based on 1994–2024 averages · Last updated: 2024-12-31