December weather forecastPoston, AZ
December
Weather in December
The first month of the winter, December, is still a comfortable month in Poston, Arizona, with an average temperature varying between 61.2°F (16.2°C) and 47.1°F (8.4°C).Temperature
December is the month when Poston experiences its coldest temperatures, averaging a high of 61.2°F (16.2°C) and a low of 47.1°F (8.4°C).Humidity
January and December, with an average relative humidity of 39%, are the most humid months.Rainfall
In Poston, during December, the rain falls for 3.6 days and regularly aggregates up to 0.35" (9mm) of precipitation. In Poston, during the entire year, the rain falls for 39.4 days and collects up to 3.9" (99mm) of precipitation.Daylight
With an average of 9h and 54min of daylight, December has the shortest days of the year.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
December has the least sunshine of the year, 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 estimate of 3 to 5 represents a medium vulnerability from unsafe exposure to UV radiation for ordinary individuals.Note: In December, the maximum UV index of 3 suggests this advice:
Ensure safety - Recommendations to avert sunburn are presented. Solar radiation is at its peak intensity during midday, so it's advisable to stay indoors or in the shade. Sunglasses that guard against UVA and UVB rays are pivotal in minimizing sun-induced ocular damage.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
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).
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).
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).
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%).
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").
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).
Average daylight in December /
Average sunshine in December
Poston, 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: 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).
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).
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).
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).
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).
