Contents
- Weather in December
- Frequently asked questions
- Average temperature in December
- Average pressure in December
- Average wind speed in December
- Average humidity in December
- Average rainfall in December
- Average rainfall days in December
- Average snowfall in December
- Average snowfall days in December
- Average daylight in December
- Average sunshine in December
- Average sunshine days in December
- Average UV index in December
- Average cloud cover in December
- Average visibility in December
Weather in December
Temperature
December, with an average high of 44.4°F (6.9°C) and a low of 29.3°F (-1.5°C), signifies the coldest month of the year.Humidity
The months with the highest humidity in Phoenix are January and December, with an average relative humidity of 83%.Rainfall
December is the month with the most rainfall. Rain falls for 14.4 days and accumulates 3.11" (79mm) of precipitation.Snowfall
January through April, November and December are months with snowfall. In Phoenix, in December, during 2.7 snowfall days, 1.3" (33mm) of snow is typically accumulated. Throughout the year, in Phoenix, there are 14.2 snowfall days, and 8.15" (207mm) of snow is accumulated.Daylight
December has the shortest days of the year in Phoenix, with an average of 9h and 6min of daylight.On the first day of December, sunrise is at 7:21 am and sunset at 4:39 pm. On the last day of the month, sunrise is at 7:40 am and sunset at 4:49 pm PST.
Sunshine
With an average of 5.3h of sunshine, December has the least sunshine of the year.UV index
January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Phoenix. A UV Index estimate of 2, and below, represents a minimal health hazard from exposure to the Sun's UV radiation for average individuals.Note: A maximum high UV index of 2 in December translates into the following recommendations:
Unlike children, who always need sun protection, most individuals can remain in the sun for up to an hour without getting burnt. The Sun's harshest UV rays are around midday; it's wise to seek shade and limit time outdoors. Wearing a wide-brim hat can block approximately 50% of UV radiation, protecting the eyes. Be advised! The UV radiation from the Sun can be almost doubled due to the reflective properties of snow.
Frequently asked questions
What time of the year is the coldest in Phoenix?
How cold is December in Phoenix?
What are the most humid months in Phoenix?
What is the average humidity in December in Phoenix?
What is the wettest month in Phoenix?
How many days does it rain in December in Phoenix?
How much does it snow in Phoenix in December?
What is the month with the shortest days in Phoenix?
How many hours of daylight does Phoenix have in December?
What time are sunrise and sunset in December in Phoenix?
What is the month with the least sunshine in Phoenix?
How long on average sun shines in December in Phoenix?
What are the months with the lowest UV index in Phoenix?
What is the UV index reading in December in Phoenix?
Average temperature in December
Phoenix, OR
- Average high temperature in December: 44.4°F
The warmest month (with the highest average high temperature) is August (85.1°F).
The month with the lowest average high temperature is December (44.4°F).
- Average low temperature in December: 29.3°F
The month with the highest average low temperature is August (49.5°F).
The coldest month (with the lowest average low temperature) is December (29.3°F).
Average pressure in December
Phoenix, OR
- Average pressure in December: 30.13"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is August (29.98"Hg).
Average wind speed in December
Phoenix, OR
- Average wind speed in December: 3.9mph
The windiest months (with the highest average wind speed) are January and March (4.2mph).
The calmest months (with the lowest average wind speed) are August, September and October (3.4mph).
Average humidity in December
Phoenix, OR
- Average humidity in December: 83%
The months with the highest relative humidity are January and December (83%).
The month with the lowest relative humidity is August (59%).
Average rainfall in December
Phoenix, OR
- Average rainfall in December: 3.11"
The wettest month (with the highest rainfall) is December (3.11").
The driest month (with the least rainfall) is July (0.2").
Average rainfall days in December
Phoenix, OR
- Average rainfall days in December: 14.4 days
The month with the highest number of rainy days is March (17.8 days).
The month with the least rainy days is August (3.7 days).
Average snowfall in December
Phoenix, OR
- Average snowfall in December: 1.3"
The month with the highest snowfall is February (2.64").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in December
Phoenix, OR
- Average snowfall days in December: 2.7 days
The month with the highest number of snowfall days is February (4.8 days).
The months with the least snowfall days are June, July, August and October (0 days).
Average daylight in December /
Average sunshine in December
Phoenix, OR
- Average daylight in December: 9h and 1min
The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 6min).
- Average sunshine in December: 5h and 2min
The months with the most sunshine are July and August (Average sunshine: 11h and 54min).
The month with the least sunshine is December (Average sunshine: 5h and 18min).
Average sunshine days in December
Phoenix, OR
- Average sunshine days in December: 14 days
The month with the most sunshine days is August (25.3 days).
The month with the least sunshine days is March (11.2 days).
Average UV index in December
Phoenix, OR
- Average UV index in December: 2
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in December
Phoenix, OR
- Average cloud cover in December: 46
The month with the most cloud cover is March (Cloud cover 48).
The month with the least cloud cover is August (Cloud cover 11).
Average visibility in December
Phoenix, OR
- Average visibility in December: 5mi
The months with the highest visibility are July, August, September and October (6mi).
The months with the lowest visibility are January, February, March, April, May, June, November and December (5mi).
Phoenix, Oregon, USA
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