Contents
- Weather in December
- Frequently asked questions
- Average temperature in December
- Average pressure in December
- Average wind speed in December
- Average humidity in December
- Average rainfall in December
- Average rainfall days in December
- Average snowfall in December
- Average snowfall days in December
- Average daylight in December
- Average sunshine in December
- Average sunshine days in December
- Average UV index in December
- Average cloud cover in December
- Average visibility in December
Weather in December
Temperature
Palomar Mountain records the coldest temperatures in December, averaging a high of 62.4°F (16.9°C) and a low of 45.1°F (7.3°C).Humidity
In December, the average relative humidity in Palomar Mountain, California, is 58%.Rainfall
In Palomar Mountain, in December, it is raining for 5.5 days, with typically 0.79" (20mm) of accumulated precipitation. In Palomar Mountain, during the entire year, the rain falls for 51.6 days and collects up to 5.59" (142mm) of precipitation.Snowfall
Months with snowfall in Palomar Mountain are January through May, October through December. Throughout December, 5.39" (137mm) of snow is accumulated. In Palomar Mountain, during the entire year, snow aggregates up to 35.51" (902mm).Daylight
With an average of 10h and 0min of daylight, December has the shortest days of the year in Palomar Mountain.On the first day of the month, sunrise is at 6:33 am and sunset at 4:39 pm. On the last day of December, in Palomar Mountain, sunrise is at 6:51 am and sunset at 4:50 pm PST.
Sunshine
The month with the least sunshine is December, with an average of 6.7h of sunshine.UV index
With an average maximum UV index of 3, December is the month with the lowest UV index in Palomar Mountain. A UV Index estimate of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV rays for ordinary individuals.Note: The daily high UV index of 3 in December translates into this advice:
Ensure safety - Imperative it is to shield skin and eyes from damage. The mid-day Sun emits the most powerful UV radiation, so seek shade and minimize exposure. In bright sunlight, prioritize sunglasses that grant protection from UVA and UVB radiation. Mark this! Snow reflection can nearly double the UV radiation intensity from the Sun.
Frequently asked questions
What time of the year is the coldest in Palomar Mountain?
What is the temperature in December in Palomar Mountain?
What is the average humidity in December in Palomar Mountain?
How much does it rain in Palomar Mountain in December?
How much does it snow in Palomar Mountain in December?
What is the month with the shortest days in Palomar Mountain?
How many hours of daylight does Palomar Mountain have in December?
When is the sunrise / sunset in December in Palomar Mountain?
What is the month with the least sunshine in Palomar Mountain?
How many hours of sunshine does Palomar Mountain have in December?
What is the month with the lowest UV index in Palomar Mountain?
What is the UV index intensity in December in Palomar Mountain?
Average temperature in December
Palomar Mountain, CA
- Average high temperature in December: 62.4°F
The warmest month (with the highest average high temperature) is August (86.9°F).
The month with the lowest average high temperature is December (62.4°F).
- Average low temperature in December: 45.1°F
The month with the highest average low temperature is August (63.1°F).
The coldest month (with the lowest average low temperature) is February (44.6°F).
Average pressure in December
Palomar Mountain, CA
- Average pressure in December: 30.06"Hg
The month with the highest atmospheric pressure is January (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.86"Hg).
Average wind speed in December
Palomar Mountain, CA
- Average wind speed in December: 5mph
The windiest month (with the highest average wind speed) is April (5.3mph).
The calmest month (with the lowest average wind speed) is September (4.2mph).
Average humidity in December
Palomar Mountain, CA
- Average humidity in December: 58%
The month with the highest relative humidity is May (66%).
The month with the lowest relative humidity is November (52%).
Average rainfall in December
Palomar Mountain, CA
- Average rainfall in December: 0.79"
The wettest month (with the highest rainfall) is February (0.94").
The driest month (with the least rainfall) is June (0.04").
Average rainfall days in December
Palomar Mountain, CA
- Average rainfall days in December: 5.5 days
The month with the highest number of rainy days is March (7.1 days).
The month with the least rainy days is June (1.3 days).
Average snowfall in December
Palomar Mountain, CA
- Average snowfall in December: 5.4"
The month with the highest snowfall is March (9.4").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Palomar Mountain, CA
- Average snowfall days in December: 0 days
The month with the highest number of snowfall days is February (0.1 days).
The months with the least snowfall days are January, March, April, May, June, July, August, September, October, November and December (0 days).
Average daylight in December /
Average sunshine in December
Palomar Mountain, 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 4min
The month with the most sunshine is July (Average sunshine: 12h and 6min).
The month with the least sunshine is December (Average sunshine: 6h and 42min).
Average sunshine days in December
Palomar Mountain, CA
- Average sunshine days in December: 24.5 days
The month with the most sunshine days is June (28.1 days).
The month with the least sunshine days is February (21.5 days).
Average UV index in December
Palomar Mountain, CA
- Average UV index in December: 3
The months with the highest UV index are June, July, August and September (UV index 6).
The month with the lowest UV index is December (UV index 3).
Average cloud cover in December
Palomar Mountain, CA
- Average cloud cover in December: 23
The month with the most cloud cover is March (Cloud cover 25).
The month with the least cloud cover is August (Cloud cover 6).
Average visibility in December
Palomar Mountain, 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).
Palomar Mountain, California, USA
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