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 its average high-temperature of 54.1°F (12.3°C) and an average low-temperature of 38.7°F (3.7°C), holds the record as the coldest month.Humidity
The months with the highest humidity are February and December, with an average relative humidity of 53%.Rainfall
December is the month with the most rainfall. Rain falls for 4.5 days and accumulates 1.38" (35mm) of precipitation.Snowfall
Months with snowfall are January through April, November and December. December is the month with the most snowfall. Snow falls for 1.5 days and accumulates 3.31" (84mm) of snow.Daylight
With an average of 9h and 54min of daylight, December has the shortest days of the year.On the first day of December, sunrise is at 6:40 am and sunset at 4:41 pm. On the last day of the month, sunrise is at 6:57 am and sunset at 4:51 pm PST.
Sunshine
With an average of 6.8h of sunshine, December has the least sunshine of the year in Valyermo, California.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 reading of 3 to 5 represents a medium health hazard from unprotected exposure to Sun's UV rays for the average person.Note: The maximum daily UV index of 3 during December translates into the following directions:
Be vigilant - Preventing sunburn is recommended. Protect yourself from the midday Sun's peak UV radiation by minimizing exposure. During bright days, sunglasses that offer UVA and UVB defense are recommended. Observe! Snow reflection can nearly intensify the Sun's UV radiation twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What month is the coldest?
What is the average December temperature?
What are the most humid months in Valyermo?
What is the average humidity in December?
What is the rainiest month?
How many days does it rain in December?
What is the snowiest month?
How many days does it snow in December in Valyermo?
What is the month with the shortest days?
What is the average length of the day in December?
When are sunrise and sunset in December?
What is the month with the least sunshine?
How many hours of sunshine does Valyermo have in December?
What are the months with the lowest UV index?
How high is the UV index in December?
Average temperature in December
Valyermo, CA
- Average high temperature in December: 54.1°F
The warmest month (with the highest average high temperature) is August (90.1°F).
The month with the lowest average high temperature is December (54.1°F).
- Average low temperature in December: 38.7°F
The month with the highest average low temperature is August (65.3°F).
The coldest month (with the lowest average low temperature) is December (38.7°F).
Average pressure in December
Valyermo, CA
- Average pressure in December: 30.08"Hg
The month with the highest atmospheric pressure is January (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.85"Hg).
Average wind speed in December
Valyermo, CA
- Average wind speed in December: 6.3mph
The windiest month (with the highest average wind speed) is May (8mph).
The calmest month (with the lowest average wind speed) is September (5.7mph).
Average humidity in December
Valyermo, CA
- Average humidity in December: 53%
The months with the highest relative humidity are February and December (53%).
The month with the lowest relative humidity is August (34%).
Average rainfall in December
Valyermo, CA
- Average rainfall in December: 1.38"
The wettest month (with the highest rainfall) is December (1.38").
The driest month (with the least rainfall) is June (0.04").
Average rainfall days in December
Valyermo, CA
- Average rainfall days in December: 4.5 days
The month with the highest number of rainy days is March (5.2 days).
The month with the least rainy days is June (0.9 days).
Average snowfall in December
Valyermo, CA
- Average snowfall in December: 3.31"
The month with the highest snowfall is December (3.31").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in December
Valyermo, CA
- Average snowfall days in December: 1.5 days
The month with the highest number of snowfall days is February (2.1 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in December /
Average sunshine in December
Valyermo, 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: 6h and 5min
The months with the most sunshine are June and July (Average sunshine: 12h and 6min).
The month with the least sunshine is December (Average sunshine: 6h and 48min).
Average sunshine days in December
Valyermo, CA
- Average sunshine days in December: 24.6 days
The month with the most sunshine days is June (28.4 days).
The month with the least sunshine days is February (22.9 days).
Average UV index in December
Valyermo, CA
- Average UV index in December: 3
The month with the highest UV index is July (UV index 7).
The months with the lowest UV index are January, February, November and December (UV index 3).
Average cloud cover in December
Valyermo, CA
- Average cloud cover in December: 22
The month with the most cloud cover is December (Cloud cover 22).
The month with the least cloud cover is August (Cloud cover 5).
Average visibility in December
Valyermo, 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).
Valyermo, California, USA
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