December weather forecastBoneyard, AZ

December

Weather in December

The first month of the winter, December, is also a wintry month in Boneyard, Arizona, with an average temperature ranging between max 41.5°F (5.3°C) and min 23.4°F (-4.8°C).

Temperature

The commencement of December involves a temperature shift, with the average high-temperature dropping from a fresh 51.8°F (11°C) in November to an icy 41.5°F (5.3°C). Boneyard experiences a nighttime temperature average of 23.4°F (-4.8°C) during December.

Humidity

In December, the average relative humidity is 64%.

Rainfall

In December, the rain falls for 3.7 days. Throughout December, 1.18" (30mm) of precipitation is accumulated. In Boneyard, during the entire year, the rain falls for 105.2 days and collects up to 20.71" (526mm) of precipitation.

Snowfall

Months with snowfall are January through May, October through December. In Boneyard, in December, during 8.4 snowfall days, 7.8" (198mm) of snow is typically accumulated. Throughout the year, there are 35.4 snowfall days, and 28.98" (736mm) of snow is accumulated.

Daylight

The month with the shortest days is December, with an average of 9h and 54min of daylight.
On the first day of December, sunrise is at 7:04 am and sunset at 5:08 pm. On the last day of the month, sunrise is at 7:22 am and sunset at 5:18 pm MST.

Sunshine

December has the least sunshine of the year in Boneyard, with an average of 6.6h of sunshine.

UV index

The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 2. A UV Index value of 2, and less, symbolizes a low threat to health from unsafe exposure to UV radiation for ordinary individuals.
Note: In December, an average UV index of 2 transforms into the following instructions:
Prolonged sun exposure should always be prevented in babies, children, and those with sensitive skin. Given the potency of the midday Sun's UV radiation, one should avoid prolonged exposure. Fend off the sun's harsh rays with appropriate clothing, a wide-brim hat, and UV-protective sunglasses. Watch out! The Sun's UV radiation can be nearly magnified twofold due to snow reflection.
Updated: Jun 24, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

The high-temperature, in December, in Boneyard, is 41.5°F (5.3°C), while the low-temperature averages to 23.4°F (-4.8°C).

In Boneyard, the average relative humidity in December is 64%.

In Boneyard, during December, the rain falls for 3.7 days and regularly aggregates up to 1.18" (30mm) of precipitation.

In December, it is snowing for 8.4 days. Throughout December, 7.8" (198mm) of snow is accumulated.

The month with the shortest days is December, with an average of 9h and 54min of daylight.

In Boneyard, the average day length in December is 9h and 56min.

On the first day of December, sunrise is at 7:04 am and sunset at 5:08 pm. On the last day of the month, sunrise is at 7:22 am and sunset at 5:18 pm MST.

The month with the least sunshine is December, with an average of 6.6h of sunshine.

In Boneyard, the average sunshine duration in December is 6.6h.

The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 2.

In Boneyard, the average daily maximum UV index in December is 2. A UV Index estimate of 2, and below, represents a minimal health vulnerability from exposure to the Sun's UV radiation.
Average high temperature
Average low temperature
Average pressure
Average wind speed
Average max. wind speed
Average wind speed gusts
Average humidity
Average rainfall
Average rainfall days
Average snowfall
Average snowfall days
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in December
Boneyard, AZ

  • Average high temperature in December: 41.5°F

The warmest month (with the highest average high temperature) is June (78.1°F).
The month with the lowest average high temperature is January (40.6°F).

  • Average low temperature in December: 23.4°F

The month with the highest average low temperature is July (55.9°F).
The coldest month (with the lowest average low temperature) is January (22.8°F).

Average pressure in December
Boneyard, AZ

  • Average pressure in December: 30.1"Hg

The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).

Average wind speed in December
Boneyard, AZ

  • Average wind speed in December: 7.5mph

The windiest month (with the highest average wind speed) is April (10.3mph).
The calmest month (with the lowest average wind speed) is August (5.5mph).

Average humidity in December
Boneyard, AZ

  • Average humidity in December: 64%

The month with the highest relative humidity is January (67%).
The month with the lowest relative humidity is June (29%).

Average rainfall in December
Boneyard, AZ

  • Average rainfall in December: 1.18"

The wettest month (with the highest rainfall) is July (5.43").
The driest month (with the least rainfall) is April (0.59").

Average rainfall days in December
Boneyard, AZ

  • Average rainfall days in December: 3.7 days

The month with the highest number of rainy days is July (25.3 days).
The month with the least rainy days is November (2.5 days).

Average snowfall in December
Boneyard, AZ

  • Average snowfall in December: 7.8"

The month with the highest snowfall is January (7.87").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in December
Boneyard, AZ

  • Average snowfall days in December: 8.4 days

The month with the highest number of snowfall days is December (8.4 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in December /
Average sunshine in December
Boneyard, AZ

  • Average daylight in December: 9h and 54min

The month with the longest days is June (Average daylight: 14h and 24min).
The month with the shortest days is December (Average daylight: 9h and 54min).

  • Average sunshine in December: 6h and 36min

The month with the most sunshine is June (Average sunshine: 11h and 54min).
The month with the least sunshine is December (Average sunshine: 6h and 36min).

Average sunshine days in December
Boneyard, AZ

  • Average sunshine days in December: 20.8 days

The month with the most sunshine days is November (24.4 days).
The month with the least sunshine days is July (4 days).

Average UV index in December
Boneyard, AZ

  • Average UV index in December: 2

The months with the highest UV index are May, June, July and August (UV index 5).
The months with the lowest UV index are January, February, November and December (UV index 2).

Average cloud cover in December
Boneyard, AZ

  • Average cloud cover in December: 26

The month with the most cloud cover is July (Cloud cover 27).
The month with the least cloud cover is June (Cloud cover 12).

Average visibility in December
Boneyard, 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).