December weather forecastHidden Hills, CA
December
Weather in December
The first month of the winter, December, is still a comfortable month in Hidden Hills, California, with an average temperature varying between 49.1°F (9.5°C) and 61.7°F (16.5°C).Temperature
Temperature records mark December as the coldest month, with highs averaging 61.7°F (16.5°C) and lows at 49.1°F (9.5°C).Humidity
In Hidden Hills, the average relative humidity in December is 56%.Rainfall
In Hidden Hills, during December, the rain falls for 5.5 days and regularly aggregates up to 1.57" (40mm) of precipitation. Throughout the year, there are 49.2 rainfall days, and 9.09" (231mm) of precipitation is accumulated.Daylight
December has the shortest days of the year, with an average of 9h and 54min of daylight.On the first day of December, sunrise is at 6:42 am and sunset at 4:45 pm. On the last day of the month, sunrise is at 7:00 am and sunset at 4:55 pm PST.
Sunshine
The months with the least sunshine are January, February and December, with an average of 6.8h of sunshine.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 exposure to the Sun's UV rays for the ordinary person.Note: In December, an average UV index of 4 transforms into the following instructions:
Prioritize safety - Recommendations to avert sunburn are shared. Solar radiation is at its peak intensity during midday, so it's advisable to stay indoors or in the shade. For effective sun eye protection, rely on sunglasses certified for UVA and UVB resistance.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Hidden Hills, CA
- Average high temperature in December: 61.7°F
The warmest month (with the highest average high temperature) is August (81.1°F).
The month with the lowest average high temperature is December (61.7°F).
- Average low temperature in December: 49.1°F
The month with the highest average low temperature is August (64.6°F).
The coldest months (with the lowest average low temperature) are February and December (49.1°F).
Average pressure in December
Hidden Hills, CA
- Average pressure in December: 30.08"Hg
The month with the highest atmospheric pressure is January (30.11"Hg).
The months with the lowest atmospheric pressure are June and September (29.9"Hg).
Average wind speed in December
Hidden Hills, CA
- Average wind speed in December: 6.2mph
The windiest months (with the highest average wind speed) are April and December (6.2mph).
The calmest month (with the lowest average wind speed) is August (4.5mph).
Average humidity in December
Hidden Hills, 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 (51%).
Average rainfall in December
Hidden Hills, CA
- Average rainfall in December: 1.57"
The wettest month (with the highest rainfall) is February (1.97").
The driest month (with the least rainfall) is June (0.04").
Average rainfall days in December
Hidden Hills, CA
- Average rainfall days in December: 5.5 days
The month with the highest number of rainy days is March (6.8 days).
The month with the least rainy days is August (1.2 days).
Average daylight in December /
Average sunshine in December
Hidden Hills, 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 48min
The months with the most sunshine are June, July and August (Average sunshine: 12h and 6min).
The months with the least sunshine are January, February and December (Average sunshine: 6h and 48min).
Average sunshine days in December
Hidden Hills, CA
- Average sunshine days in December: 24.5 days
The month with the most sunshine days is August (28.3 days).
The month with the least sunshine days is February (21.2 days).
Average UV index in December
Hidden Hills, 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 January, February, March, November and December (UV index 4).
Average cloud cover in December
Hidden Hills, CA
- Average cloud cover in December: 21
The month with the most cloud cover is March (Cloud cover 22).
The month with the least cloud cover is August (Cloud cover 5).
Average visibility in December
Hidden Hills, 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).
