December weather forecast
Biola, CA

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Weather in December

The first month of the winter, December, is still a refreshing month in Biola, California, with an average temperature varying between 57°F (13.9°C) and 42.6°F (5.9°C).

Temperature

With average high temperatures of 57°F (13.9°C) and lows of 42.6°F (5.9°C), December is the coldest month.

Humidity

In December, the average relative humidity in Biola is 66%.

Rainfall

In Biola, in December, it is raining for 6.5 days, with typically 0.75" (19mm) of accumulated precipitation. Throughout the year, there are 47.3 rainfall days, and 5.67" (144mm) of precipitation is accumulated.

Daylight

December has the shortest days of the year in Biola, with an average of 9h and 42min of daylight.
On the first day of the month, sunrise is at 6:54 am and sunset at 4:43 pm. On the last day of December, in Biola, sunrise is at 7:12 am and sunset at 4:54 pm PST.

Sunshine

The month with the least sunshine in Biola, California, is December, with an average of 6.3h of sunshine.

UV index

The months with the lowest UV index are January, November and December, with an average maximum UV index of 3. A UV Index value of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV radiation for ordinary individuals.
Note: The maximum UV index, 3 during December, leads to the following recommendations:
Make use of precautions - Shielding skin and eyes from injury is a requirement. It's recommended to limit sun exposure when its radiation is at its peak during midday. Sunglasses providing both UVA and UVB protection are non-negotiable on sunlit days.
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Frequently asked questions

What time of the year is the coldest in Biola?

Biola's December weather, marked by an average high temperature of 57°F (13.9°C) and an average low temperature of 42.6°F (5.9°C), is the coldest in the year.

What is the temperature in December in Biola?

During December, Biola experiences an average high-temperature of 57°F (13.9°C) and a low-temperature of 42.6°F (5.9°C). In May, the average heat index (a.k.a. 'feels like', 'felt air temperature'), which takes the relative humidity and factors it into the air temperature reading, is estimated at 82.4°F (28°C).

What is the average humidity in December in Biola?

In Biola, the average relative humidity in December is 66%.

How much does it rain in Biola in December?

In Biola, during December, the rain falls for 6.5 days and regularly aggregates up to 0.75" (19mm) of precipitation.

What is the month with the shortest days in Biola?

The month with the shortest days is December, with an average of 9h and 42min of daylight.

How many hours of daylight does Biola have in December?

In Biola, the average day length in December is 9h and 41min.

When is the sunrise / sunset in December in Biola?

In December, on the first day of the month, sunrise is at 6:54 am and sunset at 4:43 pm. On the last day of the month, in Biola, California, sunrise is at 7:12 am and sunset at 4:54 pm PST.

What is the month with the least sunshine in Biola?

The month with the least sunshine in Biola is December, with an average of 6.3h of sunshine.

How many hours of sunshine does Biola have in December?

In December, the average sunshine duration is 6.3h.

What is the month with the lowest UV index in Biola?

January, November and December, with an average maximum UV index of 3, are months with the lowest UV index in Biola, California.

How high is the UV index in December in Biola?

In Biola, California, the average daily maximum UV index in December is 3. A UV Index reading of 3 to 5 represents a medium health risk from unsafe exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in December
Biola, CA

Average temperature in December - Biola, CA
  • Average high temperature in December: 57°F

The warmest month (with the highest average high temperature) is July (102°F).
The month with the lowest average high temperature is December (57°F).

  • Average low temperature in December: 42.6°F

The month with the highest average low temperature is July (67.1°F).
The coldest month (with the lowest average low temperature) is December (42.6°F).

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Average pressure in December
Biola, CA

Average pressure in December - Biola, CA
  • Average pressure in December: 30.12"Hg

The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).

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Average wind speed in December
Biola, CA

Average wind speed in December - Biola, CA
  • Average wind speed in December: 5.1mph

The windiest month (with the highest average wind speed) is June (7.8mph).
The calmest months (with the lowest average wind speed) are January and November (5mph).

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Average humidity in December
Biola, CA

Average humidity in December - Biola, CA
  • Average humidity in December: 66%

The month with the highest relative humidity is January (67%).
The month with the lowest relative humidity is July (29%).

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Average rainfall in December
Biola, CA

Average rainfall in December - Biola, CA
  • Average rainfall in December: 0.75"

The wettest month (with the highest rainfall) is February (1.02").
The driest month (with the least rainfall) is August (0.04").

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Average rainfall days in December
Biola, CA

Average rainfall days in December - Biola, CA
  • Average rainfall days in December: 6.5 days

The month with the highest number of rainy days is March (7.2 days).
The month with the least rainy days is August (1 days).

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Average daylight in December /
Average sunshine in December
Biola, CA

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

The month with the longest days is June (Average daylight: 14h and 36min).
The month with the shortest days is December (Average daylight: 9h and 42min).

  • Average sunshine in December: 6h and 2min

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 18min).

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Average sunshine days in December
Biola, CA

Average sunshine days in December - Biola, CA
  • Average sunshine days in December: 23.7 days

The month with the most sunshine days is August (28.5 days).
The month with the least sunshine days is February (21.5 days).

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Average UV index in December
Biola, CA

Average UV index in December - Biola, 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, November and December (UV index 3).

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Average cloud cover in December
Biola, CA

Average cloud cover in December - Biola, CA
  • Average cloud cover in December: 29

The months with the most cloud cover are March and December (Cloud cover 29).
The months with the least cloud cover are July, August and September (Cloud cover 5).

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Average visibility in December
Biola, CA

Average visibility in December - Biola, 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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Biola, California, USA

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