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
Sierra Vista records the coldest temperatures in December, averaging a high of 56.3°F (13.5°C) and a low of 41.9°F (5.5°C).Humidity
The average relative humidity in December in Sierra Vista, California, is 67%.Rainfall
In Sierra Vista, California, during December, the rain falls for 7 days and regularly aggregates up to 1.3" (33mm) of precipitation. In Sierra Vista, during the entire year, the rain falls for 51 days and collects up to 7.56" (192mm) of precipitation.Daylight
With an average of 9h and 42min of daylight, December has the shortest days of the year in Sierra Vista.On the first day of December in Sierra Vista, California, sunrise is at 6:56 am and sunset at 4:44 pm. On the last day of the month, sunrise is at 7:14 am and sunset at 4:54 pm PST.
Sunshine
With an average of 6.2h of sunshine, December has the least sunshine of the year in Sierra Vista.UV index
January, February, November and December, with an average maximum UV index of 3, are months with the lowest UV index. A UV Index value of 3 to 5 symbolizes a medium vulnerability from unprotected exposure to Sun's UV rays for the average person.Note: The UV index of 3 during December leads to these advisories:
Make use of precautions - Shielding skin and eyes from injury is a requirement. Midday is the peak time for the Sun's radiation; stay in the shade and protect yourself. For effective sun eye protection, rely on sunglasses certified for UVA and UVB resistance.
Frequently asked questions
What time of the year is the coldest in Sierra Vista?
What is the temperature in December in Sierra Vista?
What is the average humidity in December in Sierra Vista?
How much does it rain in Sierra Vista in December?
What is the month with the shortest days in Sierra Vista?
What is the average length of the day in December in Sierra Vista?
When are sunrise and sunset in December in Sierra Vista?
What is the month with the least sunshine in Sierra Vista?
How many hours of sunshine does Sierra Vista have in December?
What are the months with the lowest UV index in Sierra Vista?
What is the UV index reading in December in Sierra Vista?
Average temperature in December
Sierra Vista, CA
- Average high temperature in December: 56.3°F
The warmest month (with the highest average high temperature) is July (100°F).
The month with the lowest average high temperature is December (56.3°F).
- Average low temperature in December: 41.9°F
The month with the highest average low temperature is July (65.8°F).
The coldest month (with the lowest average low temperature) is December (41.9°F).
Average pressure in December
Sierra Vista, CA
- Average pressure in December: 30.12"Hg
The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in December
Sierra Vista, CA
- Average wind speed in December: 5mph
The windiest month (with the highest average wind speed) is June (7.9mph).
The calmest month (with the lowest average wind speed) is November (4.7mph).
Average humidity in December
Sierra Vista, CA
- Average humidity in December: 67%
The month with the highest relative humidity is January (68%).
The month with the lowest relative humidity is July (31%).
Average rainfall in December
Sierra Vista, CA
- Average rainfall in December: 1.3"
The wettest month (with the highest rainfall) is March (1.46").
The driest month (with the least rainfall) is August (0.04").
Average rainfall days in December
Sierra Vista, CA
- Average rainfall days in December: 7 days
The month with the highest number of rainy days is March (8.6 days).
The month with the least rainy days is June (0.8 days).
Average daylight in December /
Average sunshine in December
Sierra Vista, CA
- Average daylight in December: 9h and 4min
The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 42min).
- Average sunshine in December: 6h and 1min
The month with the most sunshine is July (Average sunshine: 12h and 12min).
The month with the least sunshine is December (Average sunshine: 6h and 12min).
Average sunshine days in December
Sierra Vista, CA
- Average sunshine days in December: 23.3 days
The month with the most sunshine days is June (28.8 days).
The month with the least sunshine days is February (21.5 days).
Average UV index in December
Sierra Vista, CA
- Average UV index in December: 3
The months with the highest UV index are June, July and August (UV index 7).
The months with the lowest UV index are January, February, November and December (UV index 3).
Average cloud cover in December
Sierra Vista, CA
- Average cloud cover in December: 30
The months with the most cloud cover are March and December (Cloud cover 30).
The months with the least cloud cover are July, August and September (Cloud cover 5).
Average visibility in December
Sierra Vista, CA
- 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).
Sierra Vista, California, USA
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