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 month of December, characterized by an average high of 64°F (17.8°C) and a low of 51.4°F (10.8°C), is recognized as the coldest.Humidity
In Cerritos, the average relative humidity in December is 56%.Rainfall
December is the month with the most rainfall. Rain falls for 4.9 days and accumulates 0.55" (14mm) of precipitation.Daylight
The month with the shortest days is December, with an average of 9h and 54min of daylight.On the first day of the month, sunrise is at 6:39 am and sunset at 4:43 pm. On the last day of December, sunrise is at 6:57 am and sunset at 4:54 pm PST.
Sunshine
With an average of 6.7h of sunshine, December has the least sunshine of the year.UV index
The months with the lowest UV index are February, November and December, with an average maximum UV index of 4. A UV Index of 3 to 5 symbolizes a moderate threat to health from unsafe exposure to UV radiation for the average person.Note: The daily high UV index of 4 in December translates into this advice:
Take precautions - Protection against sunburn is recommended. The mid-day Sun emits the most powerful UV radiation, so seek shade and minimize exposure. Counter UV radiation's ill effects with clothing designed for sun safety and UV-resistant eyewear.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What time of the year is the coldest?
What is the usual temperature for Cerritos in December?
What is the average humidity in December?
What is the rainiest month in Cerritos?
How many days does it rain in December?
What is the month with the shortest days?
How many hours of daylight does Cerritos have in December?
When is the sunrise / sunset in December?
What is the month with the least sunshine?
How many hours of sunshine does Cerritos have in December?
What is the month with the lowest UV index?
How high is the UV index in December?
Average temperature in December
Cerritos, CA
- Average high temperature in December: 64°F
The warmest month (with the highest average high temperature) is August (82°F).
The month with the lowest average high temperature is December (64°F).
- Average low temperature in December: 51.4°F
The month with the highest average low temperature is August (65.7°F).
The coldest month (with the lowest average low temperature) is February (51.3°F).
Average pressure in December
Cerritos, CA
- Average pressure in December: 30.07"Hg
The month with the highest atmospheric pressure is January (30.1"Hg).
The months with the lowest atmospheric pressure are June and September (29.89"Hg).
Average wind speed in December
Cerritos, CA
- Average wind speed in December: 5.3mph
The windiest month (with the highest average wind speed) is April (6.2mph).
The calmest months (with the lowest average wind speed) are September and October (4.8mph).
Average humidity in December
Cerritos, CA
- Average humidity in December: 56%
The month with the highest relative humidity is June (67%).
The month with the lowest relative humidity is November (52%).
Average rainfall in December
Cerritos, 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").
Average rainfall days in December
Cerritos, CA
- Average rainfall days in December: 4.9 days
The month with the highest number of rainy days is March (5.6 days).
The month with the least rainy days is June (0.6 days).
Average daylight in December /
Average sunshine in December
Cerritos, 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 4min
The months with the most sunshine are July and August (Average sunshine: 12h and 0min).
The month with the least sunshine is December (Average sunshine: 6h and 42min).
Average sunshine days in December
Cerritos, CA
- Average sunshine days in December: 24.6 days
The month with the most sunshine days is June (28.6 days).
The month with the least sunshine days is February (22.9 days).
Average UV index in December
Cerritos, CA
- Average UV index in December: 4
The months with the highest UV index are June, July, August and September (UV index 6).
The months with the lowest UV index are February, November and December (UV index 4).
Average cloud cover in December
Cerritos, CA
- Average cloud cover in December: 22
The months with the most cloud cover are March and December (Cloud cover 22).
The month with the least cloud cover is August (Cloud cover 6).
Average visibility in December
Cerritos, 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).
Cerritos, California, USA
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