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
December tends to be the coldest month, with temperatures averaging a daily high of 36.5°F (2.5°C) and a low of 23.2°F (-4.9°C).Humidity
The months with the highest humidity are January and December, with an average relative humidity of 79%.Rainfall
December is the month with the most rainfall. Rain falls for 8.1 days and accumulates 1.69" (43mm) of precipitation.Snowfall
Months with snowfall are January through June, September through December. December is the month with the most snowfall. Snow falls for 12.4 days and accumulates 8.27" (210mm) of snow.Daylight
The month with the shortest days is December, with an average of 9h and 12min of daylight.On the first day of the month, sunrise is at 7:12 am and sunset at 4:35 pm. On the last day of December, sunrise is at 7:30 am and sunset at 4:44 pm PST.
Sunshine
With an average of 5.4h of sunshine, December has the least sunshine of the year.UV index
The months with the lowest UV index are January through March, November and December, with an average maximum UV index of 2. A UV Index of 2, and less, symbolizes a low health risk from unsafe exposure to UV radiation for the average person.Note: The daily high UV index of 2 in December translates into this advice:
Infants, children, and people with sensitive skin should always have protection against lengthy periods of sun exposure. Stay safe from the Sun's strongest UV rays by limiting exposure during midday. Loose clothes with a tight weave are optimal for safeguarding yourself against the Sun's rays. Be alert! Nearly double the UV rays from the Sun can be reflected by snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the coldest time of year?
How cold is December in Hackamore?
What is the most humid month?
What is the average humidity in December in Hackamore?
What is the rainiest month?
How many days does it rain in December?
What is the snowiest month?
How much does it snow in December?
What is the month with the shortest days?
What is the average length of the day in December in Hackamore?
What time are sunrise and sunset in December?
What is the month with the least sunshine?
How many hours of sunshine does Hackamore have in December?
What are the months with the lowest UV index?
What is the UV index intensity in December?
Average temperature in December
Hackamore, CA
- Average high temperature in December: 36.5°F
The warmest month (with the highest average high temperature) is July (84°F).
The month with the lowest average high temperature is December (36.5°F).
- Average low temperature in December: 23.2°F
The month with the highest average low temperature is July (52.5°F).
The coldest month (with the lowest average low temperature) is December (23.2°F).
Average pressure in December
Hackamore, CA
- Average pressure in December: 30.18"Hg
The month with the highest atmospheric pressure is January (30.21"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in December
Hackamore, CA
- Average wind speed in December: 7.1mph
The windiest month (with the highest average wind speed) is March (8.6mph).
The calmest month (with the lowest average wind speed) is August (6mph).
Average humidity in December
Hackamore, CA
- Average humidity in December: 79%
The months with the highest relative humidity are January and December (79%).
The month with the lowest relative humidity is August (34%).
Average rainfall in December
Hackamore, CA
- Average rainfall in December: 1.69"
The wettest month (with the highest rainfall) is December (1.69").
The driest month (with the least rainfall) is July (0.16").
Average rainfall days in December
Hackamore, CA
- Average rainfall days in December: 8.1 days
The month with the highest number of rainy days is March (11.5 days).
The month with the least rainy days is July (2.5 days).
Average snowfall in December
Hackamore, CA
- Average snowfall in December: 8.27"
The month with the highest snowfall is December (8.27").
The months with the least snowfall are July and August (0").
Average snowfall days in December
Hackamore, CA
- Average snowfall days in December: 12.4 days
The month with the highest number of snowfall days is December (12.4 days).
The months with the least snowfall days are July and August (0 days).
Average daylight in December /
Average sunshine in December
Hackamore, CA
- Average daylight in December: 9h and 1min
The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 12min).
- Average sunshine in December: 5h and 2min
The month with the most sunshine is July (Average sunshine: 12h and 0min).
The month with the least sunshine is December (Average sunshine: 5h and 24min).
Average sunshine days in December
Hackamore, CA
- Average sunshine days in December: 14.8 days
The months with the most sunshine days are July and August (26.3 days).
The month with the least sunshine days is March (13.2 days).
Average UV index in December
Hackamore, CA
- Average UV index in December: 2
The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 2).
Average cloud cover in December
Hackamore, CA
- Average cloud cover in December: 43
The months with the most cloud cover are March and December (Cloud cover 43).
The months with the least cloud cover are July and August (Cloud cover 8).
Average visibility in December
Hackamore, CA
- Average visibility in December: 5mi
The months with the highest visibility are February, March, April, May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January and December (5mi).
Hackamore, California, USA
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