December weather forecastBellflower, CA
December
Weather in December
December, the first month of the winter in Bellflower, is still a refreshing month, with an average temperature fluctuating between 51.6°F (10.9°C) and 64.2°F (17.9°C).Temperature
Bellflower's December weather, marked by an average high temperature of 64.2°F (17.9°C) and an average low temperature of 51.6°F (10.9°C), is the coldest in the year.Humidity
In December, the average relative humidity is 56%.Rainfall
In Bellflower, in December, it is raining for 6.5 days, with typically 1.65" (42mm) of accumulated precipitation. Throughout the year, there are 53.4 rainfall days, and 8.43" (214mm) of precipitation is accumulated.Daylight
With an average of 9h and 54min of daylight, December has the shortest days of the year in Bellflower.On the first day of December, sunrise is at 6:40 am and sunset at 4:43 pm. On the last day of the month, sunrise is at 6:57 am and sunset at 4:54 pm PST.
Sunshine
The month with the least sunshine is December, with an average of 6.7h of sunshine.UV index
February, November and December, with an average maximum UV index of 4, are months with the lowest UV index. A UV Index estimate of 3 to 5 represents a moderate threat to health from unsafe exposure to UV radiation for ordinary individuals.Note: The daily high UV index of 4 in December translates into this advice:
Act with care - Obligation to protect against skin and eye damage is highlighted. The Sun's UV radiation is especially harmful around midday, so reduce exposure and stay safe. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Bellflower, CA
- Average high temperature in December: 64.2°F
The warmest month (with the highest average high temperature) is August (82°F).
The month with the lowest average high temperature is December (64.2°F).
- Average low temperature in December: 51.6°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
Bellflower, 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
Bellflower, 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
Bellflower, CA
- Average humidity in December: 56%
The month with the highest relative humidity is June (68%).
The month with the lowest relative humidity is November (53%).
Average rainfall in December
Bellflower, CA
- Average rainfall in December: 1.65"
The wettest month (with the highest rainfall) is February (1.73").
The driest month (with the least rainfall) is June (0.08").
Average rainfall days in December
Bellflower, CA
- Average rainfall days in December: 6.5 days
The month with the highest number of rainy days is March (8.2 days).
The month with the least rainy days is June (1.4 days).
Average daylight in December /
Average sunshine in December
Bellflower, CA
- Average daylight in December: 9h and 54min
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 42min
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
Bellflower, CA
- Average sunshine days in December: 22.8 days
The month with the most sunshine days is August (25.9 days).
The month with the least sunshine days is February (19.8 days).
Average UV index in December
Bellflower, 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
Bellflower, 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
Bellflower, 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).
