Contents
- Weather in December
- Frequently asked questions
- Average temperature in December
- Average pressure in December
- Average wind speed in December
- Average humidity in December
- Average rainfall in December
- Average rainfall days in December
- Average snowfall in December
- Average snowfall days in December
- Average daylight in December
- Average sunshine in December
- Average sunshine days in December
- Average UV index in December
- Average cloud cover in December
- Average visibility in December
Weather in December
Temperature
During January and December, Flagstaff registers its lowest temperatures, averaging a high of 42.6°F.Humidity
In December, the average relative humidity is 64%.Rainfall
In Flagstaff, in December, during 3.6 rainfall days, 1.1" of precipitation is typically accumulated. Throughout the year, there are 74.8 rainfall days, and 12.56" of precipitation is accumulated.Snowfall
January through May, October through December are months with snowfall in Flagstaff, Arizona. December is the month with the most snowfall. Snow falls for 7.4 days and accumulates 7.36" of snow.Daylight
December has the shortest days of the year, with an average of 9h and 48min of daylight.On the first day of December, sunrise is at 7:16 am and sunset at 5:14 pm. On the last day of the month, sunrise is at 7:34 am and sunset at 5:24 pm MST.
Sunshine
With an average of 6.8h of sunshine, December has the least sunshine of the year.UV index
The months with the lowest UV index in Flagstaff are January, February, November and December, with an average maximum UV index of 2. A UV Index of 2, and less, symbolizes a minimal health hazard from unprotected exposure to Sun's UV rays for the average person.Note: The daily maximum UV index of 2 in December interprets into the following advice:
While sun exposure does not greatly affect most, individuals with fair skin, babies, and children always need vigilant safeguarding. Considering the Sun's intensity during midday, it's wise to minimize direct exposure. To cut down UV radiation exposure by about half, sport a wide-brim hat. Be attentive! The reflective property of snow can nearly double the Sun's UV radiation.
FAQ
What are the coldest months in Flagstaff?
Is it cold in Flagstaff during December?
What is the average humidity in December in Flagstaff?
How much does it rain in Flagstaff in December?
When does it snow the most in Flagstaff?
How many days does it snow in December in Flagstaff?
What is the month with the shortest days in Flagstaff?
How many hours of daylight does Flagstaff have in December?
What time are sunrise and sunset in December in Flagstaff?
What is the month with the least sunshine in Flagstaff?
How long on average sun shines in December in Flagstaff?
When is the lowest UV index in Flagstaff?
What is the UV index intensity in December in Flagstaff?
Average temperature in December
Flagstaff, AZ
- Average high temperature in December: 42.6°F
The warmest month (with the highest average high temperature) is July (82.8°F).
The months with the lowest average high temperature are January and December (42.6°F).
- Average low temperature in December: 24.8°F
The month with the highest average low temperature is July (60.4°F).
The coldest month (with the lowest average low temperature) is December (24.8°F).
Average pressure in December
Flagstaff, AZ
- Average pressure in December: 30.1"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.86"Hg).
Average wind speed in December
Flagstaff, AZ
- Average wind speed in December: 6.9mph
The windiest month (with the highest average wind speed) is April (9.6mph).
The calmest month (with the lowest average wind speed) is August (5.8mph).
Average humidity in December
Flagstaff, AZ
- Average humidity in December: 64%
The month with the highest relative humidity is January (66%).
The month with the lowest relative humidity is June (24%).
Average rainfall in December
Flagstaff, AZ
- Average rainfall in December: 1.1"
The wettest month (with the highest rainfall) is July (2.56").
The driest month (with the least rainfall) is June (0.24").
Average rainfall days in December
Flagstaff, AZ
- Average rainfall days in December: 3.6 days
The month with the highest number of rainy days is July (16.2 days).
The months with the least rainy days are February and November (2.5 days).
Average snowfall in December
Flagstaff, AZ
- Average snowfall in December: 7.36"
The month with the highest snowfall is December (7.36").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Flagstaff, AZ
- Average snowfall days in December: 7.4 days
The month with the highest number of snowfall days is December (7.4 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in December /
Average sunshine in December
Flagstaff, AZ
- Average daylight in December: 9h and 5min
The month with the longest days is June (Average daylight: 14h and 30min).
The month with the shortest days is December (Average daylight: 9h and 48min).
- Average sunshine in December: 6h and 5min
The months with the most sunshine are June and August (Average sunshine: 12h and 12min).
The month with the least sunshine is December (Average sunshine: 6h and 48min).
Average sunshine days in December
Flagstaff, AZ
- Average sunshine days in December: 22.4 days
The month with the most sunshine days is June (25.8 days).
The month with the least sunshine days is July (11.4 days).
Average UV index in December
Flagstaff, AZ
- Average UV index in December: 2
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in December
Flagstaff, AZ
- Average cloud cover in December: 24
The month with the most cloud cover is December (Cloud cover 24).
The month with the least cloud cover is June (Cloud cover 7).
Average visibility in December
Flagstaff, AZ
- Average visibility in December: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Flagstaff, Arizona, USA
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