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
The coldest period is December, when temperatures fluctuate between an average high of 56.8°F (13.8°C) and a low of 42.1°F (5.6°C).Humidity
The most humid month in Sky Valley is December, with an average relative humidity of 46%.Rainfall
December is the month with the most rainfall in Sky Valley. Rain falls for 4.4 days and accumulates 0.55" (14mm) 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 in Sky Valley, sunrise is at 6:33 am and sunset at 4:36 pm. On the last day of the month, sunrise is at 6:50 am and sunset at 4:47 pm PST.
Sunshine
With an average of 7h of sunshine, December has the least sunshine of the year in Sky Valley, California.UV index
December is the month with the lowest UV index, with an average maximum UV index of 3. A UV Index of 3 to 5 symbolizes a moderate threat to health from unprotected exposure to Sun's UV rays for the average person.Note: In December, the UV index of 3 transforms into the following advice:
Guard yourself - Precautionary measures against sun damage are advocated. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. During bright days, sunglasses that offer UVA and UVB defense are recommended.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the coldest months in Sky Valley?
What is the temperature in December in Sky Valley?
What is the most humid month in Sky Valley?
What is the average humidity in December in Sky Valley?
What is the rainiest month in Sky Valley?
How much does it rain in Sky Valley in December?
What is the month with the shortest days in Sky Valley?
What is the average length of the day in December in Sky Valley?
When are sunrise and sunset in December in Sky Valley?
What is the month with the least sunshine in Sky Valley?
How long on average sun shines in December in Sky Valley?
What is the month with the lowest UV index in Sky Valley?
What is the UV index reading in December in Sky Valley?
Average temperature in December
Sky Valley, CA
- Average high temperature in December: 56.8°F
The warmest month (with the highest average high temperature) is July (93.7°F).
The month with the lowest average high temperature is December (56.8°F).
- Average low temperature in December: 42.1°F
The month with the highest average low temperature is August (72.1°F).
The coldest month (with the lowest average low temperature) is December (42.1°F).
Average pressure in December
Sky Valley, CA
- 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 (29.8"Hg).
Average wind speed in December
Sky Valley, CA
- Average wind speed in December: 7mph
The windiest month (with the highest average wind speed) is May (9.4mph).
The calmest month (with the lowest average wind speed) is January (6.8mph).
Average humidity in December
Sky Valley, CA
- Average humidity in December: 46%
The month with the highest relative humidity is December (46%).
The month with the lowest relative humidity is August (25%).
Average rainfall in December
Sky Valley, CA
- Average rainfall in December: 0.55"
The wettest month (with the highest rainfall) is December (0.55").
The driest month (with the least rainfall) is June (0.04").
Average rainfall days in December
Sky Valley, CA
- Average rainfall days in December: 4.4 days
The month with the highest number of rainy days is July (5.3 days).
The month with the least rainy days is June (0.7 days).
Average daylight in December /
Average sunshine in December
Sky Valley, CA
- Average daylight in December: 9h and 5min
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
Sky Valley, CA
- Average sunshine days in December: 25.7 days
The month with the most sunshine days is October (28.7 days).
The month with the least sunshine days is July (21.4 days).
Average UV index in December
Sky Valley, CA
- Average UV index in December: 3
The month with the highest UV index is July (UV index 8).
The month with the lowest UV index is December (UV index 3).
Average cloud cover in December
Sky Valley, CA
- Average cloud cover in December: 20
The month with the most cloud cover is December (Cloud cover 20).
The month with the least cloud cover is June (Cloud cover 5).
Average visibility in December
Sky Valley, 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).
Sky Valley, California, USA
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