December weather forecast
Hathaway Pines, CA

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Weather in December

December, the first month of the winter in Hathaway Pines, is still a chilly month, with an average temperature fluctuating between 48°F and 32°F.

Temperature

December is the month when Hathaway Pines experiences its coldest temperatures, averaging a high of 48°F and a low of 32°F.

Humidity

The average relative humidity in December is 67%.

Rainfall

In Hathaway Pines, California, in December, during 8.2 rainfall days, 4.76" of precipitation is typically accumulated. Throughout the year, there are 69 rainfall days, and 29.09" of precipitation is accumulated.

Snowfall

January through May, October through December are months with snowfall in Hathaway Pines, California. In Hathaway Pines, during December, snow falls for 6 days and regularly aggregates up to 11.06" of snow. In Hathaway Pines, during the entire year, snow falls for 31 days and aggregates up to 79.92" of snow.

Daylight

December has the shortest days of the year, with an average of 9h and 36min of daylight.
On the first day of December in Hathaway Pines, sunrise is at 6:59 am and sunset at 4:41 pm. On the last day of the month, sunrise is at 7:17 am and sunset at 4:51 pm PST.

Sunshine

With an average of 6h of sunshine, December has the least sunshine of the year.

UV index

The months with the lowest UV index in Hathaway Pines, California, are February, November and December, with an average maximum UV index of 2. A UV Index estimate of 2, and below, represents a minimal health vulnerability from unsafe exposure to UV radiation for ordinary individuals.
Note: The maximum UV index of 2 during December leads to these instructions:
Those with sensitive skin, infants, and children require constant safeguarding from prolonged sun exposure. Around midday, solar radiation is most harmful; hence, exposure should be limited. For excellent sun protection for the eyes, ears, face, and neck, consider a wide-brim hat. Take note! UV radiation from the Sun can double in intensity due to snow reflection.
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FAQ

What is the coldest time of year in Hathaway Pines?

With average high and low temperatures of 48°F and 32°F respectively, December is Hathaway Pines's coldest month.

What are the temperatures in Hathaway Pines in December?

December temperatures in Hathaway Pines vary between a high-temperature of 48°F and a low-temperature of 32°F.

What is the average humidity in December in Hathaway Pines?

In December, the average relative humidity in Hathaway Pines, California, is 67%.

How many days does it rain in December in Hathaway Pines?

In Hathaway Pines, during December, the rain falls for 8.2 days and regularly aggregates up to 4.76" of precipitation.

How much does it snow in Hathaway Pines in December?

In Hathaway Pines, during December, snow falls for 6 days and regularly aggregates up to 11.06" of snow.

What is the month with the shortest days in Hathaway Pines?

The month with the shortest days in Hathaway Pines, California, is December, with an average of 9h and 36min of daylight.

What is the average length of the day in December in Hathaway Pines?

In December, the average day length is 9h and 34min.

When are sunrise and sunset in December in Hathaway Pines?

On the first day of December, sunrise is at 6:59 am and sunset at 4:41 pm. On the last day of the month, sunrise is at 7:17 am and sunset at 4:51 pm PST.

What is the month with the least sunshine in Hathaway Pines?

December has the least sunshine of the year, with an average of 6h of sunshine.

How many hours of sunshine does Hathaway Pines have in December?

In Hathaway Pines, California, the average sunshine duration in December is 6h.

What are the months with the lowest UV index in Hathaway Pines?

February, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Hathaway Pines.

How high is the UV index in December in Hathaway Pines?

In Hathaway Pines, the average daily maximum UV index in December is 2. A UV Index value of 2, and less, symbolizes a minimal hazard to health from unsafe exposure to Sun's UV rays.
Average high temperature
Average low temperature
Average pressure
Average wind speed
Average max. wind speed
Average wind speed gusts
Average humidity
Average rainfall
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in December
Hathaway Pines, CA

Average temperature in December - Hathaway Pines, CA
  • Average high temperature in December: 48°F

The warmest month (with the highest average high temperature) is July (85.8°F).
The month with the lowest average high temperature is December (48°F).

  • Average low temperature in December: 32°F

The month with the highest average low temperature is July (57.2°F).
The coldest month (with the lowest average low temperature) is December (32°F).

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Average pressure in December
Hathaway Pines, CA

Average pressure in December - Hathaway Pines, CA
  • Average pressure in December: 30.13"Hg

The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).

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Average wind speed in December
Hathaway Pines, CA

Average wind speed in December - Hathaway Pines, CA
  • Average wind speed in December: 5.3mph

The windiest month (with the highest average wind speed) is February (6.1mph).
The calmest month (with the lowest average wind speed) is August (4.8mph).

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Average humidity in December
Hathaway Pines, CA

Average humidity in December - Hathaway Pines, CA
  • Average humidity in December: 67%

The month with the highest relative humidity is March (74%).
The month with the lowest relative humidity is July (36%).

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Average rainfall in December
Hathaway Pines, CA

Average rainfall in December - Hathaway Pines, CA
  • Average rainfall in December: 4.76"

The wettest month (with the highest rainfall) is March (5.98").
The driest months (with the least rainfall) are July and August (0.08").

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Average rainfall days in December
Hathaway Pines, CA

Average rainfall days in December - Hathaway Pines, CA
  • Average rainfall days in December: 8.2 days

The month with the highest number of rainy days is March (11.3 days).
The month with the least rainy days is August (1.6 days).

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Average snowfall in December
Hathaway Pines, CA

Average snowfall in December - Hathaway Pines, CA
  • Average snowfall in December: 11.06"

The month with the highest snowfall is March (21.34").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in December
Hathaway Pines, CA

Average snowfall days in December - Hathaway Pines, CA
  • Average snowfall days in December: 6 days

The month with the highest number of snowfall days is March (7.2 days).
The months with the least snowfall days are June, July and August (0 days).

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Average daylight in December /
Average sunshine in December
Hathaway Pines, CA

Average daylight in December / Average sunshine in December - Hathaway Pines, CA
  • Average daylight in December: 9h and 4min

The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 36min).

  • Average sunshine in December: 6h and 0min

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 0min).

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Average sunshine days in December
Hathaway Pines, CA

Average sunshine days in December - Hathaway Pines, CA
  • Average sunshine days in December: 19.5 days

The month with the most sunshine days is August (27.9 days).
The month with the least sunshine days is March (14.5 days).

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Average UV index in December
Hathaway Pines, CA

Average UV index in December - Hathaway Pines, CA
  • Average UV index in December: 2

The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are February, November and December (UV index 2).

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Average cloud cover in December
Hathaway Pines, CA

Average cloud cover in December - Hathaway Pines, CA
  • Average cloud cover in December: 32

The month with the most cloud cover is March (Cloud cover 37).
The months with the least cloud cover are July and August (Cloud cover 5).

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Average visibility in December
Hathaway Pines, CA

Average visibility in December - Hathaway Pines, 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).

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Hathaway Pines, California, USA

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