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 reaches its lowest average temperatures in December, measuring 56.3°F (13.5°C) at the peak and 41.9°F (5.5°C) at the lowest.Humidity
In December, the average relative humidity in Sierra Vista is 67%.Rainfall
In Sierra Vista, in December, during 7 rainfall days, 1.3" (33mm) of precipitation is typically accumulated. Throughout the year, there are 51 rainfall days, and 7.56" (192mm) of precipitation is accumulated.Daylight
The month with the shortest days is December, with an average of 9h and 42min of daylight.On the first day of December, 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
The month with the least sunshine is December, with an average of 6.2h of sunshine.UV index
The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 3. A UV Index reading of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV rays for the ordinary person.Note: In December, a daily UV index of 3 turns into the following recommendations:
Take precautions. Light skin individuals may get burned in less than 30 minutes. 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.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What part of the year is the coldest?
What is the average December temperature?
What is the average humidity in December?
How many days does it rain in December?
What is the month with the shortest days?
How many hours of daylight does Sierra Vista have in December?
When is the sunrise / sunset in December in Sierra Vista?
What is the month with the least sunshine?
How many hours of sunshine does Sierra Vista have in December?
What is the month with the lowest UV index in Sierra Vista?
What is the UV index reading in December?
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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