December weather forecastRolling Hills Estates, CA
December
Weather in December
December, the first month of the winter in Rolling Hills Estates, is still a comfortable month, with an average temperature fluctuating between 53.6°F (12°C) and 62.4°F (16.9°C).Temperature
December tends to be the coldest month, with temperatures averaging a daily high of 62.4°F (16.9°C) and a low of 53.6°F (12°C).Humidity
In December, the average relative humidity in Rolling Hills Estates is 60%.Rainfall
In Rolling Hills Estates, California, in December, during 6.1 rainfall days, 1.34" (34mm) of precipitation is typically accumulated. Throughout the year, in Rolling Hills Estates, there are 57.4 rainfall days, and 7.68" (195mm) of precipitation is accumulated.Daylight
The month with the shortest days in Rolling Hills Estates is December, with an average of 10h and 0min of daylight.On the first day of December in Rolling Hills Estates, sunrise is at 6:40 am and sunset at 4:44 pm. On the last day of the month, sunrise is at 6:58 am and sunset at 4:55 pm PST.
Sunshine
January and December, with an average of 6.7h of sunshine, are months with the least sunshine in Rolling Hills Estates.UV index
January through March, November and December, with an average maximum UV index of 4, are months with the lowest UV index. A UV Index reading of 3 to 5 represents a moderate health risk from unprotected exposure to Sun's UV rays for ordinary individuals.Note: The daily high UV index of 4 during December translates into the following recommendations:
Prioritize safety - The need to safeguard skin and eyes from harm is emphasized. Sun exposure should be minimized, especially during midday, to avoid harmful UV radiation. Fend off the sun's harsh rays with appropriate clothing, a wide-brim hat, and UV-protective sunglasses.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Rolling Hills Estates, CA
- Average high temperature in December: 62.4°F
The warmest months (with the highest average high temperature) are August and September (76.1°F).
The month with the lowest average high temperature is December (62.4°F).
- Average low temperature in December: 53.6°F
The month with the highest average low temperature is August (64.4°F).
The coldest month (with the lowest average low temperature) is February (52.5°F).
Average pressure in December
Rolling Hills Estates, 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 (29.9"Hg).
Average wind speed in December
Rolling Hills Estates, CA
- Average wind speed in December: 6mph
The windiest month (with the highest average wind speed) is April (7mph).
The calmest month (with the lowest average wind speed) is September (5.3mph).
Average humidity in December
Rolling Hills Estates, CA
- Average humidity in December: 60%
The month with the highest relative humidity is June (75%).
The month with the lowest relative humidity is November (58%).
Average rainfall in December
Rolling Hills Estates, CA
- Average rainfall in December: 1.34"
The wettest month (with the highest rainfall) is January (1.46").
The driest month (with the least rainfall) is June (0.12").
Average rainfall days in December
Rolling Hills Estates, CA
- Average rainfall days in December: 6.1 days
The month with the highest number of rainy days is March (6.6 days).
The month with the least rainy days is August (3.3 days).
Average daylight in December /
Average sunshine in December
Rolling Hills Estates, CA
- Average daylight in December: 10h and 0min
The month with the longest days is June (Average daylight: 14h and 24min).
The month with the shortest days is December (Average daylight: 10h and 0min).
- Average sunshine in December: 6h and 42min
The month with the most sunshine is August (Average sunshine: 11h and 54min).
The months with the least sunshine are January and December (Average sunshine: 6h and 42min).
Average sunshine days in December
Rolling Hills Estates, CA
- Average sunshine days in December: 23.6 days
The month with the most sunshine days is January (24.4 days).
The month with the least sunshine days is June (17.8 days).
Average UV index in December
Rolling Hills Estates, CA
- Average UV index in December: 4
The months with the highest UV index are July, August and September (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 4).
Average cloud cover in December
Rolling Hills Estates, CA
- Average cloud cover in December: 23
The month with the most cloud cover is December (Cloud cover 23).
The month with the least cloud cover is August (Cloud cover 9).
Average visibility in December
Rolling Hills Estates, 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).
