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 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
Valley Center's coldest weather arrives in December, when temperatures average a high of 62.4°F (16.9°C) and a low of 45.1°F (7.3°C).Humidity
In December, the average relative humidity is 58%.Rainfall
In Valley Center, during December, the rain falls for 5.5 days and regularly aggregates up to 0.79" (20mm) of precipitation. Throughout the year, there are 51.6 rainfall days, and 5.59" (142mm) of precipitation is accumulated.Snowfall
In Valley Center, snow does not fall in January, March through December.Daylight
The month with the shortest days in Valley Center is December, with an average of 10h and 0min of daylight.On the first day of December, sunrise is at 6:34 am and sunset at 4:40 pm. On the last day of the month, sunrise is at 6:51 am and sunset at 4:51 pm PST.
Sunshine
With an average of 6.7h of sunshine, December has the least sunshine of the year in Valley Center.UV index
December is the month with the lowest UV index, with an average maximum UV index of 3. A UV Index value of 3 to 5 symbolizes a medium health hazard from unprotected exposure to Sun's UV rays for average individuals.Note: In December, a daily UV index of 3 turns into the following recommendations:
Exercise prudence. Persons with fair skin could be burned in under 30 minutes. For health reasons, it's advisable to reduce direct sun exposure during peak hours around midday. Select sunglasses that boast both UVA and UVB protection to limit the adverse effects of the sun on the eyes.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the coldest time of year in Valley Center?
What are the temperatures in Valley Center in December?
What is the average humidity in December in Valley Center?
How much does it rain in Valley Center in December?
When it does not snow in Valley Center?
What is the month with the shortest days in Valley Center?
How many hours of daylight does Valley Center have in December?
When is the sunrise / sunset in December in Valley Center?
What is the month with the least sunshine in Valley Center?
How many hours of sunshine does Valley Center have in December?
What is the month with the lowest UV index in Valley Center?
What is the UV index intensity in December in Valley Center?
Average temperature in December
Valley Center, CA
- Average high temperature in December: 62.4°F
The warmest month (with the highest average high temperature) is August (86.9°F).
The month with the lowest average high temperature is December (62.4°F).
- Average low temperature in December: 45.1°F
The month with the highest average low temperature is August (63.1°F).
The coldest month (with the lowest average low temperature) is February (44.6°F).
Average pressure in December
Valley Center, 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 (29.86"Hg).
Average wind speed in December
Valley Center, CA
- Average wind speed in December: 5mph
The windiest month (with the highest average wind speed) is April (5.3mph).
The calmest month (with the lowest average wind speed) is September (4.2mph).
Average humidity in December
Valley Center, CA
- Average humidity in December: 58%
The month with the highest relative humidity is May (66%).
The month with the lowest relative humidity is November (52%).
Average rainfall in December
Valley Center, CA
- Average rainfall in December: 0.79"
The wettest month (with the highest rainfall) is February (0.94").
The driest month (with the least rainfall) is June (0.04").
Average rainfall days in December
Valley Center, CA
- Average rainfall days in December: 5.5 days
The month with the highest number of rainy days is March (7.1 days).
The month with the least rainy days is June (1.3 days).
Average snowfall days in December
Valley Center, CA
- Average snowfall days in December: 0 days
The month with the highest number of snowfall days is February (0.1 days).
The months with the least snowfall days are January, March, April, May, June, July, August, September, October, November and December (0 days).
Average daylight in December /
Average sunshine in December
Valley Center, CA
- 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: 6h and 4min
The month with the most sunshine is July (Average sunshine: 12h and 6min).
The month with the least sunshine is December (Average sunshine: 6h and 42min).
Average sunshine days in December
Valley Center, CA
- Average sunshine days in December: 24.5 days
The month with the most sunshine days is June (28.1 days).
The month with the least sunshine days is February (21.5 days).
Average UV index in December
Valley Center, CA
- Average UV index in December: 3
The months with the highest UV index are June, July, August and September (UV index 6).
The month with the lowest UV index is December (UV index 3).
Average cloud cover in December
Valley Center, CA
- Average cloud cover in December: 23
The month with the most cloud cover is March (Cloud cover 25).
The month with the least cloud cover is August (Cloud cover 6).
Average visibility in December
Valley Center, 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).
Valley Center, California, USA
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