December weather forecastPlanada, CA
December
Weather in December
December, the first month of the winter in Planada, is still a refreshing month, with temperature in the range of an average low of 41.9°F (5.5°C) and an average high of 55.9°F (13.3°C).Temperature
December tends to be the coldest month, with temperatures averaging a daily high of 55.9°F (13.3°C) and a low of 41.9°F (5.5°C).Humidity
In Planada, the average relative humidity in December is 68%.Rainfall
In December, the rain falls for 8.7 days. Throughout December, 1.89" (48mm) of precipitation is accumulated. In Planada, during the entire year, the rain falls for 62.9 days and collects up to 11.69" (297mm) of precipitation.Daylight
The month with the shortest days is December, with an average of 9h and 36min of daylight.On the first day of December, sunrise is at 6:57 am and sunset at 4:43 pm. On the last day of the month, sunrise is at 7:15 am and sunset at 4:54 pm PST.
Sunshine
The month with the least sunshine is December, with an average of 6.1h of sunshine.UV index
January, February, November and December, with an average maximum UV index of 3, are months with the lowest UV index in Planada. A UV Index of 3 to 5 symbolizes a medium health hazard from unprotected exposure to Sun's UV rays for ordinary individuals.Note: The maximum UV index of 3 during December translates into these guidelines:
Take heed. Individuals of lighter complexion can be burned in less than half an hour. Avoid the Sun's strongest UV rays by seeking shade and limiting exposure during midday. Sunglasses that guard against UVA and UVB rays are pivotal in minimizing sun-induced ocular damage.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Planada, CA
- Average high temperature in December: 55.9°F
The warmest month (with the highest average high temperature) is July (99.1°F).
The month with the lowest average high temperature is December (55.9°F).
- Average low temperature in December: 41.9°F
The month with the highest average low temperature is July (65.5°F).
The coldest month (with the lowest average low temperature) is December (41.9°F).
Average pressure in December
Planada, CA
- Average pressure in December: 30.12"Hg
The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in December
Planada, CA
- Average wind speed in December: 5.5mph
The windiest month (with the highest average wind speed) is June (8.3mph).
The calmest months (with the lowest average wind speed) are January and November (5.2mph).
Average humidity in December
Planada, CA
- Average humidity in December: 68%
The month with the highest relative humidity is January (70%).
The month with the lowest relative humidity is July (32%).
Average rainfall in December
Planada, CA
- Average rainfall in December: 1.89"
The wettest month (with the highest rainfall) is March (2.44").
The driest month (with the least rainfall) is August (0.04").
Average rainfall days in December
Planada, CA
- Average rainfall days in December: 8.7 days
The month with the highest number of rainy days is March (11.3 days).
The month with the least rainy days is June (1.1 days).
Average daylight in December /
Average sunshine in December
Planada, CA
- Average daylight in December: 9h and 36min
The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 36min).
- Average sunshine in December: 6h and 6min
The month with the most sunshine is July (Average sunshine: 12h and 12min).
The month with the least sunshine is December (Average sunshine: 6h and 6min).
Average sunshine days in December
Planada, CA
- Average sunshine days in December: 21.5 days
The month with the most sunshine days is August (28.8 days).
The month with the least sunshine days is March (18.8 days).
Average UV index in December
Planada, CA
- Average UV index in December: 3
The months with the highest UV index are June, July and August (UV index 7).
The months with the lowest UV index are January, February, November and December (UV index 3).
Average cloud cover in December
Planada, CA
- Average cloud cover in December: 31
The month with the most cloud cover is March (Cloud cover 32).
The months with the least cloud cover are July and August (Cloud cover 5).
Average visibility in December
Planada, 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).
