December weather forecastPalmdale, CA
December
Weather in December
The first month of the winter, December, is still a cool month in Palmdale, California, with an average temperature varying between 38.1°F (3.4°C) and 54.5°F (12.5°C).Temperature
The coldest period is December, when temperatures fluctuate between an average high of 54.5°F (12.5°C) and a low of 38.1°F (3.4°C).Humidity
With an average relative humidity of 54%, December is the most humid month.Rainfall
December is the month with the most rainfall. Rain falls for 4.4 days and accumulates 1.14" (29mm) of precipitation.Snowfall
Months with snowfall are February, March, November and December. The month with the most snowfall is December, when snow falls for 0.1 days and typically aggregates up to 1.81" (46mm) of snow.Daylight
With an average of 9h and 54min of daylight, December has the shortest days of the year.On the first day of December, sunrise is at 6:41 am and sunset at 4:41 pm. On the last day of the month, sunrise is at 6:59 am and sunset at 4:52 pm PST.
Sunshine
The average sunshine in December in Palmdale is 6.9h.UV index
January, February, November and December, with an average maximum UV index of 3, are months with the lowest UV index. A UV Index reading of 3 to 5 represents a medium health hazard from unprotected exposure to Sun's UV rays for the average person.Note: The UV index of 3 during December translates into the following guidance:
Adopt protective measures - Requirement to safeguard skin and eyes from harm exists. Considering the Sun's intensity during midday, it's wise to minimize direct exposure. Select sunglasses that boast both UVA and UVB protection to limit the adverse effects of the sun on the eyes. Take warning! The intensity of the Sun's UV radiation can be nearly amplified twice due to snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Palmdale, CA
- Average high temperature in December: 54.5°F
The warmest months (with the highest average high temperature) are July and August (91°F).
The month with the lowest average high temperature is December (54.5°F).
- Average low temperature in December: 38.1°F
The month with the highest average low temperature is August (65.1°F).
The coldest month (with the lowest average low temperature) is December (38.1°F).
Average pressure in December
Palmdale, CA
- Average pressure in December: 30.09"Hg
The month with the highest atmospheric pressure is January (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.86"Hg).
Average wind speed in December
Palmdale, CA
- Average wind speed in December: 6.8mph
The windiest month (with the highest average wind speed) is May (9.1mph).
The calmest month (with the lowest average wind speed) is September (6.6mph).
Average humidity in December
Palmdale, CA
- Average humidity in December: 54%
The month with the highest relative humidity is December (54%).
The month with the lowest relative humidity is August (33%).
Average rainfall in December
Palmdale, CA
- Average rainfall in December: 1.14"
The wettest month (with the highest rainfall) is December (1.14").
The driest month (with the least rainfall) is June (0.04").
Average rainfall days in December
Palmdale, CA
- Average rainfall days in December: 4.4 days
The month with the highest number of rainy days is March (6.3 days).
The month with the least rainy days is June (1.2 days).
Average snowfall in December
Palmdale, CA
- Average snowfall in December: 1.81"
The month with the highest snowfall is December (1.81").
The months with the least snowfall are January, April, May, June, July, August, September and October (0").
Average snowfall days in December
Palmdale, CA
- Average snowfall days in December: 0.1 days
The month with the highest number of snowfall days is February (0.6 days).
The months with the least snowfall days are January, May, June, July, August, September and October (0 days).
Average daylight in December /
Average sunshine in December
Palmdale, 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 54min
The months with the most sunshine are June and July (Average sunshine: 12h and 6min).
The month with the least sunshine is January (Average sunshine: 6h and 48min).
Average sunshine days in December
Palmdale, CA
- Average sunshine days in December: 25.9 days
The month with the most sunshine days is June (27.8 days).
The month with the least sunshine days is February (23.3 days).
Average UV index in December
Palmdale, 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
Palmdale, CA
- Average cloud cover in December: 22
The month with the most cloud cover is December (Cloud cover 22).
The months with the least cloud cover are August and September (Cloud cover 5).
Average visibility in December
Palmdale, 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).
