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 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 brings the lowest temperatures, with an average high of 64.9°F (18.3°C) and an average low of 49.8°F (9.9°C).Humidity
December is the most humid month, with an average relative humidity of 39%.Rainfall
In Roll, Arizona, during December, the rain falls for 3.5 days and regularly aggregates up to 0.28" (7mm) of precipitation. Throughout the year, in Roll, Arizona, there are 38.1 rainfall days, and 3.9" (99mm) of precipitation is accumulated.Daylight
The month with the shortest days is December, with an average of 10h and 0min of daylight.On the first day of the month, sunrise is at 7:20 am and sunset at 5:29 pm. On the last day of December, sunrise is at 7:38 am and sunset at 5:40 pm MST.
Sunshine
December has the least sunshine of the year in Roll, Arizona, with an average of 7.1h of sunshine.UV index
The months with the lowest UV index in Roll are November and December, with an average maximum UV index of 4. A UV Index reading of 3 to 5 represents a medium vulnerability from unsafe exposure to UV radiation for the ordinary person.Note: The maximum daily UV index of 4 during December translates into the following directions:
Undertake precautions - Guarding against sun damage is counselled. Being in direct Sun during midday can be harmful due to intense solar radiation; take precautions. A wide-brimmed hat provides unparalleled sun protection for sensitive areas like the eyes, ears, and neck.
Frequently asked questions
What time of the year is the coldest in Roll?
What are December temperatures in Roll?
What is the most humid month in Roll?
What is the average humidity in December in Roll?
How many days does it rain in December in Roll?
What is the month with the shortest days in Roll?
How many hours of daylight does Roll have in December?
When is the sunrise / sunset in December in Roll?
What is the month with the least sunshine in Roll?
How long on average sun shines in December in Roll?
What is the month with the lowest UV index in Roll?
What is the UV index intensity in December in Roll?
Average temperature in December
Roll, AZ
- Average high temperature in December: 64.9°F
The warmest month (with the highest average high temperature) is July (103.8°F).
The month with the lowest average high temperature is December (64.9°F).
- Average low temperature in December: 49.8°F
The month with the highest average low temperature is August (85.6°F).
The coldest months (with the lowest average low temperature) are January and December (49.8°F).
Average pressure in December
Roll, AZ
- Average pressure in December: 30.03"Hg
The month with the highest atmospheric pressure is January (30.06"Hg).
The month with the lowest atmospheric pressure is June (29.73"Hg).
Average wind speed in December
Roll, AZ
- Average wind speed in December: 6mph
The windiest month (with the highest average wind speed) is July (8.4mph).
The calmest months (with the lowest average wind speed) are November and December (6mph).
Average humidity in December
Roll, AZ
- Average humidity in December: 39%
The month with the highest relative humidity is December (39%).
The month with the lowest relative humidity is June (21%).
Average rainfall in December
Roll, AZ
- Average rainfall in December: 0.28"
The wettest month (with the highest rainfall) is July (0.71").
The driest month (with the least rainfall) is May (0.04").
Average rainfall days in December
Roll, AZ
- Average rainfall days in December: 3.5 days
The month with the highest number of rainy days is July (7.6 days).
The month with the least rainy days is May (0.9 days).
Average daylight in December /
Average sunshine in December
Roll, AZ
- Average daylight in December: 10h and 0min
The month with the longest days is June (Average daylight: 14h and 18min).
The month with the shortest days is December (Average daylight: 10h and 0min).
- Average sunshine in December: 7h and 1min
The month with the most sunshine is June (Average sunshine: 12h and 12min).
The month with the least sunshine is December (Average sunshine: 7h and 6min).
Average sunshine days in December
Roll, AZ
- Average sunshine days in December: 27.4 days
The month with the most sunshine days is May (29.7 days).
The month with the least sunshine days is July (19.8 days).
Average UV index in December
Roll, AZ
- Average UV index in December: 4
The months with the highest UV index are June, July and August (UV index 8).
The months with the lowest UV index are November and December (UV index 4).
Average cloud cover in December
Roll, AZ
- Average cloud cover in December: 17
The month with the most cloud cover is December (Cloud cover 17).
The month with the least cloud cover is June (Cloud cover 5).
Average visibility in December
Roll, 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).
Roll, Arizona, USA
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