December weather forecast and climate
Poston, AZ

Weather in December

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

Temperature

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

Humidity

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

Rainfall

In December, in Poston, Arizona, the rain falls for 3.6 days. Throughout December, 0.35" (9mm) of precipitation is accumulated. In Poston, during the entire year, the rain falls for 39.4 days and collects up to 3.9" (99mm) of precipitation.

Daylight

The month with the shortest days in Poston is December, with an average of 9.9h of daylight.

Sunshine

December has the least sunshine of the year, with an average of 7h of sunshine.

UV index

The month with the lowest UV index is December, with an average maximum UV index of 3. A UV Index of 3 to 5 symbolizes a medium health hazard from unsafe exposure to the UV radiation for average individuals.
Note: In December, the average maximum UV index of 3 translate into the following recommendations:
Take precautions - Protection against sun damage is advised. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun.
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FAQ

What is the coldest month in Poston?

With an average high-temperature of 61.2°F (16.2°C) and an average low-temperature of 47.1°F (8.4°C), December is the coldest month in Poston, Arizona.

What is the temperature in December in Poston?

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

What is the most humid month in Poston?

Months with the highest humidity in Poston, Arizona, are January and December, with an average relative humidity of 39%.

What is the average humidity in December in Poston?

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

How much does it rain in Poston in December?

In Poston, in December, during 3.6 rainfall days, 0.35" (9mm) of precipitation is typically accumulated.

What is the month with the shortest days in Poston?

The month with the shortest days in Poston is December, with an average of 9.9h of daylight.

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

The average length of the day in December in Poston is 9.9h.

What is the month with the least sunshine in Poston?

With an average of 7h of sunshine, December has the least sunshine of the year in Poston.

How many hours of sunshine does Poston have in December?

The average sunshine in December is 7h.

When is the lowest UV index in Poston?

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

What is the UV index reading in December in Poston?

In December, the average daily maximum UV index in Poston is 3. A UV Index value of 3 to 5 symbolizes a moderate vulnerability from unprotected exposure to the UV radiation.

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"

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

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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%

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: 9.9h

The month with the longest days is June (Average daylight: 14.4h).
The month with the shortest days is December (Average daylight: 9.9h).

  • Average sunshine in December: 7h

The month with the most sunshine is June (Average sunshine: 12.1h).
The month with the least sunshine is December (Average sunshine: 7h).

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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

Months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).

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