December weather forecast
Poston, AZ

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Weather in December

The first month of the winter, December, is still a refreshing month in Poston, Arizona, with an average temperature fluctuating between 61.2°F (16.2°C) and 47.1°F (8.4°C).

Temperature

December is the coldest month, with the temperature often reaching an average high of 61.2°F (16.2°C) and an average low of 47.1°F (8.4°C).

Humidity

The months with the highest humidity are January and December, with an average relative humidity of 39%.

Rainfall

In December, in Poston, the rain falls for 3.6 days. Throughout December, 0.35" (9mm) of precipitation is accumulated. Throughout the year, there are 39.4 rainfall days, and 3.9" (99mm) of precipitation is accumulated.

Daylight

December has the shortest days of the year, with an average of 9h and 54min of daylight.
On the first day of December, sunrise is at 7:25 am and sunset at 5:28 pm. On the last day of the month, sunrise is at 7:42 am and sunset at 5:39 pm MST.

Sunshine

The month with the least sunshine in Poston is December, with an average of 7h of sunshine.

UV index

With an average maximum UV index of 3, December is the month with the lowest UV index. A UV Index of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV rays for ordinary individuals.
Note: The daily maximum UV index of 3 in December interprets into the following advice:
Proceed with care. Light skin individuals may be exposed to burns in fewer than 30 minutes. The Sun's UV radiation is especially harmful around midday, so reduce exposure and stay safe. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure.
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Frequently asked questions

What time of the year is the coldest in Poston?

In Poston, December is the coldest month, with temperatures averaging a high of 61.2°F (16.2°C) and a low of 47.1°F (8.4°C).

What is the temperature in December in Poston?

The average high-temperature, in December, in Poston, is 61.2°F (16.2°C), while the average low-temperature is 47.1°F (8.4°C).

What are the most humid months in Poston?

The months with the highest humidity are January and December, with an average relative humidity of 39%.

What is the average humidity in December in Poston?

In Poston, Arizona, the average relative humidity in December is 39%.

How much does it rain in Poston in December?

In Poston, during December, the rain falls for 3.6 days and regularly aggregates up to 0.35" (9mm) of precipitation.

What is the month with the shortest days in Poston?

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

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

The average day length in December in Poston is 9h and 56min.

When are sunrise and sunset in December in Poston?

In December, on the first day of the month, sunrise is at 7:25 am and sunset at 5:28 pm. On the last day of the month, sunrise is at 7:42 am and sunset at 5:39 pm MST.

What is the month with the least sunshine in Poston?

The month with the least sunshine in Poston, Arizona, is December, with an average of 7h of sunshine.

How many hours of sunshine does Poston have in December?

In Poston, the average sunshine duration in December is 7h.

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

With an average maximum UV index of 3, December is the month with the lowest UV index in Poston, Arizona.

What is the UV index reading in December in Poston?

In December, the average daily maximum UV index in Poston, Arizona, is 3. A UV Index estimate of 3 to 5 represents a moderate health threat from exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in December
Poston, AZ

Average temperature in December - Poston, AZ
  • Average high temperature in December: 61.2°F

The warmest month (with the highest average high temperature) is July (104.2°F).
The month with the lowest average high temperature is December (61.2°F).

  • Average low temperature in December: 47.1°F

The month with the highest average low temperature is August (85.6°F).
The coldest month (with the lowest average low temperature) is December (47.1°F).

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Average pressure in December
Poston, AZ

Average pressure in December - Poston, AZ
  • Average pressure in December: 30.06"Hg

The month with the highest atmospheric pressure is January (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.74"Hg).

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Average wind speed in December
Poston, AZ

Average wind speed in December - Poston, AZ
  • Average wind speed in December: 6mph

The windiest month (with the highest average wind speed) is April (8.5mph).
The calmest month (with the lowest average wind speed) is November (5.8mph).

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Average humidity in December
Poston, AZ

Average humidity in December - Poston, AZ
  • Average humidity in December: 39%

The months with the highest relative humidity are January and December (39%).
The month with the lowest relative humidity is June (15%).

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Average rainfall in December
Poston, AZ

Average rainfall in December - Poston, AZ
  • Average rainfall in December: 0.35"

The wettest month (with the highest rainfall) is July (0.59").
The driest months (with the least rainfall) are May and June (0.04").

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Average rainfall days in December
Poston, AZ

Average rainfall days in December - Poston, AZ
  • Average rainfall days in December: 3.6 days

The month with the highest number of rainy days is July (7.8 days).
The month with the least rainy days is May (1.2 days).

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

Average daylight in December / Average sunshine in December - Poston, AZ
  • Average daylight in December: 9h and 5min

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: 7h and 0min

The month with the most sunshine is June (Average sunshine: 12h and 6min).
The month with the least sunshine is December (Average sunshine: 7h and 0min).

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Average sunshine days in December
Poston, AZ

Average sunshine days in December - Poston, AZ
  • Average sunshine days in December: 26.8 days

The month with the most sunshine days is May (29.3 days).
The month with the least sunshine days is July (20.2 days).

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Average UV index in December
Poston, AZ

Average UV index in December - Poston, AZ
  • Average UV index in December: 3

The month with the highest UV index is July (UV index 9).
The month with the lowest UV index is December (UV index 3).

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Average cloud cover in December
Poston, AZ

Average cloud cover in December - Poston, AZ
  • Average cloud cover in December: 19

The month with the most cloud cover is December (Cloud cover 19).
The month with the least cloud cover is June (Cloud cover 5).

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Average visibility in December
Poston, AZ

Average visibility in December - Poston, 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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Poston, Arizona, USA

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