December weather forecast
Holbrook, AZ

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The small town of Holbrook in Arizona
The small town of Holbrook in Arizona

Weather in December

December, the first month of the winter in Holbrook, is also a frosty month, with an average temperature varying between 47.7°F (8.7°C) and 30.9°F (-0.6°C).

Temperature

December's onset brings a reduction in the average high-temperature, from a refreshing 59.2°F (15.1°C) in November to a chilly 47.7°F (8.7°C). During the nights in December, Holbrook experiences a consistent average temperature of 30.9°F (-0.6°C).

Humidity

The average relative humidity in December in Holbrook is 54%.

Rainfall

In December, the rain falls for 5.1 days. Throughout December, 0.63" (16mm) of precipitation is accumulated. Throughout the year, in Holbrook, there are 74.3 rainfall days, and 7.2" (183mm) of precipitation is accumulated.

Snowfall

Months with snowfall are January through April, November and December. In Holbrook, Arizona, in December, snow falls for 3.1 days, with typically accumulated 1.3" (33mm) of snow. In Holbrook, Arizona, during the entire year, snow falls for 11.2 days and aggregates up to 5.98" (152mm) of snow.

Daylight

With an average of 9h and 54min of daylight, December has the shortest days of the year.
On the first day of December in Holbrook, sunrise is at 7:10 am and sunset at 5:09 pm. On the last day of the month, sunrise is at 7:28 am and sunset at 5:19 pm MST.

Sunshine

The month with the least sunshine is December, with an average of 6.8h of sunshine.

UV index

The month with the lowest UV index in Holbrook is December, with an average maximum UV index of 2. A UV Index estimate of 2, and below, represents a low threat to health from unprotected exposure to Sun's UV rays for the ordinary person.
Note: A daily maximum UV index of 2 in December translates into the following instructions:
For the majority, extended sun exposure is not of great concern. Infants and people with sensitive skin must always be protected. To prevent harmful UV exposure, minimize direct contact with the Sun around midday. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. Take careful note! The UV radiation of the Sun can be nearly doubled by snow reflection.
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Frequently asked questions

What are the temperatures in Holbrook in December?

In December, the average high-temperature and low-temperature in Holbrook are 47.7°F (8.7°C) and 30.9°F (-0.6°C) respectively.

What is the average humidity in December in Holbrook?

In Holbrook, the average relative humidity in December is 54%.

How much does it rain in Holbrook in December?

In Holbrook, Arizona, in December, it is raining for 5.1 days, with typically 0.63" (16mm) of accumulated precipitation.

How many days does it snow in December in Holbrook?

In Holbrook, Arizona, during December, snow falls for 3.1 days and regularly aggregates up to 1.3" (33mm) of snow.

What is the month with the shortest days in Holbrook?

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

What is the average length of the day in December in Holbrook?

In Holbrook, the average day length in December is 9h and 52min.

What time are sunrise and sunset in December in Holbrook?

On the first day of December, sunrise is at 7:10 am and sunset at 5:09 pm. On the last day of the month, sunrise is at 7:28 am and sunset at 5:19 pm MST.

What is the month with the least sunshine in Holbrook?

The month with the least sunshine in Holbrook, Arizona, is December, with an average of 6.8h of sunshine.

How many hours of sunshine does Holbrook have in December?

In Holbrook, the average sunshine duration in December is 6.8h.

What is the month with the lowest UV index in Holbrook?

With an average maximum UV index of 2, December is the month with the lowest UV index.

What is the UV index intensity in December in Holbrook?

The average daily maximum UV index in December in Holbrook, Arizona, is 2. A UV Index reading of 2, and below, represents a low health risk from exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in December
Holbrook, AZ

Average temperature in December - Holbrook, AZ
  • Average high temperature in December: 47.7°F

The warmest month (with the highest average high temperature) is July (90.1°F).
The month with the lowest average high temperature is January (46.8°F).

  • Average low temperature in December: 30.9°F

The month with the highest average low temperature is July (70.5°F).
The coldest month (with the lowest average low temperature) is January (29.8°F).

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Average pressure in December
Holbrook, AZ

Average pressure in December - Holbrook, AZ
  • Average pressure in December: 30.11"Hg

The month with the highest atmospheric pressure is January (30.16"Hg).
The months with the lowest atmospheric pressure are May and June (29.88"Hg).

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Average wind speed in December
Holbrook, AZ

Average wind speed in December - Holbrook, AZ
  • Average wind speed in December: 6.9mph

The windiest months (with the highest average wind speed) are April and May (10.6mph).
The calmest month (with the lowest average wind speed) is January (6.1mph).

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Average humidity in December
Holbrook, AZ

Average humidity in December - Holbrook, AZ
  • Average humidity in December: 54%

The month with the highest relative humidity is January (59%).
The month with the lowest relative humidity is June (18%).

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Average rainfall in December
Holbrook, AZ

Average rainfall in December - Holbrook, AZ
  • Average rainfall in December: 0.63"

The wettest month (with the highest rainfall) is July (1.1").
The driest month (with the least rainfall) is June (0.16").

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Average rainfall days in December
Holbrook, AZ

Average rainfall days in December - Holbrook, AZ
  • Average rainfall days in December: 5.1 days

The month with the highest number of rainy days is July (13.3 days).
The months with the least rainy days are June and November (3.4 days).

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Average snowfall in December
Holbrook, AZ

Average snowfall in December - Holbrook, AZ
  • Average snowfall in December: 1.3"

The month with the highest snowfall is February (2.17").
The months with the least snowfall are May, June, July, August, September and October (0").

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Average snowfall days in December
Holbrook, AZ

Average snowfall days in December - Holbrook, AZ
  • Average snowfall days in December: 3.1 days

The month with the highest number of snowfall days is December (3.1 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

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

Average daylight in December / Average sunshine in December - Holbrook, 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 54min).

  • Average sunshine in December: 6h and 5min

The month with the most sunshine is August (Average sunshine: 12h and 12min).
The month with the least sunshine is December (Average sunshine: 6h and 48min).

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Average sunshine days in December
Holbrook, AZ

Average sunshine days in December - Holbrook, AZ
  • Average sunshine days in December: 23.7 days

The months with the most sunshine days are May, June and November (25.3 days).
The month with the least sunshine days is July (12.8 days).

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Average UV index in December
Holbrook, AZ

Average UV index in December - Holbrook, AZ
  • Average UV index in December: 2

The months with the highest UV index are June, July and August (UV index 7).
The month with the lowest UV index is December (UV index 2).

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Average cloud cover in December
Holbrook, AZ

Average cloud cover in December - Holbrook, AZ
  • Average cloud cover in December: 23

The month with the most cloud cover is December (Cloud cover 23).
The month with the least cloud cover is June (Cloud cover 9).

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Average visibility in December
Holbrook, AZ

Average visibility in December - Holbrook, 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).

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Holbrook, Arizona, USA

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