December weather forecastPalm Grove, CA
December
Weather in December
The first month of the winter, December, is still a mild month in Palm Grove, California, with temperature in the range of an average high of 59°F (15°C) and an average low of 42.3°F (5.7°C).Temperature
The coldest period tends to be December, when average temperatures fluctuate between a high of 59°F (15°C) and a low of 42.3°F (5.7°C).Humidity
In December, the average relative humidity is 53%.Rainfall
In Palm Grove, in December, during 6.8 rainfall days, 1.02" (26mm) of precipitation is typically accumulated. In Palm Grove, California, during the entire year, the rain falls for 64.8 days and collects up to 8.7" (221mm) of precipitation.Snowfall
Months with snowfall are February, March and December. December is the first month it typically snows. Throughout December, in the average 0.2 snowfall days, it receives 0.12" (3mm) of snow. Throughout the year, there are 1.2 snowfall days, and 0.71" (18mm) of snow is accumulated.Daylight
The month with the shortest days is December, with an average of 10h and 0min of daylight.On the first day of December, sunrise is at 6:29 am and sunset at 4:38 pm. On the last day of the month, sunrise is at 6:47 am and sunset at 4:49 pm PST.
Sunshine
With an average of 6.3h of sunshine, December has the least sunshine of the year.UV index
The months with the lowest UV index are November and December, with an average maximum UV index of 3. A UV Index value of 3 to 5 symbolizes a medium vulnerability from unsafe exposure to UV radiation for the ordinary person.Note: The UV index of 3 during December leads to these advisories:
Act with care - Obligation to protect against skin and eye damage is highlighted. Avoiding the Sun's peak radiation during midday hours is essential for health and safety. In bright sunlight, prioritize sunglasses that grant protection from UVA and UVB radiation. Take note! UV radiation from the Sun can double in intensity due to snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Palm Grove, CA
- Average high temperature in December: 59°F
The warmest month (with the highest average high temperature) is August (90.3°F).
The month with the lowest average high temperature is December (59°F).
- Average low temperature in December: 42.3°F
The month with the highest average low temperature is August (66.7°F).
The coldest month (with the lowest average low temperature) is December (42.3°F).
Average pressure in December
Palm Grove, CA
- Average pressure in December: 30.05"Hg
The month with the highest atmospheric pressure is January (30.08"Hg).
The month with the lowest atmospheric pressure is June (29.84"Hg).
Average wind speed in December
Palm Grove, CA
- Average wind speed in December: 7.2mph
The windiest months (with the highest average wind speed) are April and May (7.3mph).
The calmest month (with the lowest average wind speed) is August (5.1mph).
Average humidity in December
Palm Grove, CA
- Average humidity in December: 53%
The months with the highest relative humidity are March and May (54%).
The month with the lowest relative humidity is August (43%).
Average rainfall in December
Palm Grove, CA
- Average rainfall in December: 1.02"
The wettest month (with the highest rainfall) is February (1.5").
The driest month (with the least rainfall) is June (0.08").
Average rainfall days in December
Palm Grove, CA
- Average rainfall days in December: 6.8 days
The month with the highest number of rainy days is July (7.9 days).
The month with the least rainy days is June (1.5 days).
Average snowfall in December
Palm Grove, CA
- Average snowfall in December: 0.12"
The month with the highest snowfall is February (0.55").
The months with the least snowfall are January, April, May, June, July, August, September, October and November (0").
Average snowfall days in December
Palm Grove, CA
- Average snowfall days in December: 0.2 days
The month with the highest number of snowfall days is February (0.8 days).
The months with the least snowfall days are January, April, May, June, July, August, September, October and November (0 days).
Average daylight in December /
Average sunshine in December
Palm Grove, CA
- Average daylight in December: 10h and 0min
The month with the longest days is June (Average daylight: 14h and 18min).
The month with the shortest days is December (Average daylight: 10h and 0min).
- Average sunshine in December: 6h and 18min
The month with the most sunshine is June (Average sunshine: 12h and 6min).
The month with the least sunshine is December (Average sunshine: 6h and 18min).
Average sunshine days in December
Palm Grove, CA
- Average sunshine days in December: 22.9 days
The month with the most sunshine days is June (27.8 days).
The month with the least sunshine days is July (19 days).
Average UV index in December
Palm Grove, CA
- Average UV index in December: 3
The months with the highest UV index are July and August (UV index 7).
The months with the lowest UV index are November and December (UV index 3).
Average cloud cover in December
Palm Grove, CA
- Average cloud cover in December: 26
The month with the most cloud cover is December (Cloud cover 26).
The month with the least cloud cover is June (Cloud cover 6).
Average visibility in December
Palm Grove, 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).
