December weather forecast
Los Serranos, CA

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Weather in December

The first month of the winter, December, is still a refreshing month in Los Serranos, California, with temperature in the range of an average high of 64.4°F (18°C) and an average low of 47.5°F (8.6°C).

Temperature

December, known for its average high temperature of 64.4°F (18°C) and an average low temperature of 47.5°F (8.6°C), is the coldest month.

Humidity

In December, the average relative humidity is 51%.

Rainfall

The month with the most rainfall is December, when the rain falls for 4.7 days and typically aggregates up to 0.75" (19mm) of precipitation.

Daylight

With an average of 9h and 54min of daylight, December has the shortest days of the year.
On the first day of December in Los Serranos, sunrise is at 6:38 am and sunset at 4:41 pm. On the last day of the month, sunrise is at 6:56 am and sunset at 4:52 pm PST.

Sunshine

February and December, with an average of 6.8h of sunshine, are months with the least sunshine.

UV index

January, February, November and December, with an average maximum UV index of 4, are months with the lowest UV index in Los Serranos. A UV Index of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV rays for the ordinary person.
Note: A maximum high daily UV index of 4 during December translates into the following directions:
Guard yourself - Avoiding sunburn is suggested. The Sun's radiation is especially intense around midday; try to stay in shade during this period. On days when the sun blazes, arm yourself with sunglasses that block UVA and UVB radiation.
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Frequently asked questions

What month is the coldest in Los Serranos?

Los Serranos, California, experiences its lowest temperatures in December, with an average peak of 64.4°F (18°C) and a low of 47.5°F (8.6°C).

What is the temperature in December in Los Serranos?

During December, Los Serranos experiences an average high-temperature of 64.4°F (18°C) and a low-temperature of 47.5°F (8.6°C). The average heat index (a.k.a. 'felt air temperature', 'real feel'), which represents the influence of relative humidity on air temperature, in September is computed to be 91.4°F (33°C).

What is the average humidity in December in Los Serranos?

In December, the average relative humidity in Los Serranos, California, is 51%.

What is the rainiest month in Los Serranos?

The month with the most rainfall in Los Serranos is December, when the rain falls for 4.7 days and typically aggregates up to 0.75" (19mm) of precipitation.

How much does it rain in Los Serranos in December?

In December, in Los Serranos, the rain falls for 4.7 days. Throughout December, 0.75" (19mm) of precipitation is accumulated.

What is the month with the shortest days in Los Serranos?

The month with the shortest days in Los Serranos is December, with an average of 9h and 54min of daylight.

How many hours of daylight does Los Serranos have in December?

In Los Serranos, California, the average day length in December is 9h and 56min.

What time are sunrise and sunset in December in Los Serranos?

On the first day of December in Los Serranos, California, sunrise is at 6:38 am and sunset at 4:41 pm. On the last day of the month, sunrise is at 6:56 am and sunset at 4:52 pm PST.

What are the months with the least sunshine in Los Serranos?

The months with the least sunshine in Los Serranos, California, are February and December, with an average of 6.8h of sunshine.

How long on average sun shines in December in Los Serranos?

The average sunshine duration in December is 6.8h.

When is the lowest UV index in Los Serranos?

January, February, November and December, with an average maximum UV index of 4, are months with the lowest UV index.

What is the UV index intensity in December in Los Serranos?

In Los Serranos, California, the average daily maximum UV index in December is 4. A UV Index value of 3 to 5 symbolizes a medium health risk from 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
Los Serranos, CA

Average temperature in December - Los Serranos, CA
  • Average high temperature in December: 64.4°F

The warmest month (with the highest average high temperature) is August (91°F).
The month with the lowest average high temperature is December (64.4°F).

  • Average low temperature in December: 47.5°F

The month with the highest average low temperature is August (66.6°F).
The coldest month (with the lowest average low temperature) is February (47.3°F).

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Average pressure in December
Los Serranos, CA

Average pressure in December - Los Serranos, CA
  • Average pressure in December: 30.07"Hg

The month with the highest atmospheric pressure is January (30.1"Hg).
The month with the lowest atmospheric pressure is June (29.87"Hg).

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Average wind speed in December
Los Serranos, CA

Average wind speed in December - Los Serranos, CA
  • Average wind speed in December: 5mph

The windiest month (with the highest average wind speed) is May (5.7mph).
The calmest month (with the lowest average wind speed) is September (4.5mph).

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Average humidity in December
Los Serranos, CA

Average humidity in December - Los Serranos, CA
  • Average humidity in December: 51%

The month with the highest relative humidity is May (57%).
The month with the lowest relative humidity is November (45%).

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Average rainfall in December
Los Serranos, CA

Average rainfall in December - Los Serranos, CA
  • Average rainfall in December: 0.75"

The wettest month (with the highest rainfall) is December (0.75").
The driest month (with the least rainfall) is June (0").

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Average rainfall days in December
Los Serranos, CA

Average rainfall days in December - Los Serranos, CA
  • Average rainfall days in December: 4.7 days

The month with the highest number of rainy days is March (6.3 days).
The month with the least rainy days is June (0.8 days).

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Average daylight in December /
Average sunshine in December
Los Serranos, CA

Average daylight in December / Average sunshine in December - Los Serranos, CA
  • Average daylight in December: 9h and 5min

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 5min

The month with the most sunshine is July (Average sunshine: 12h and 6min).
The months with the least sunshine are February and December (Average sunshine: 6h and 48min).

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Average sunshine days in December
Los Serranos, CA

Average sunshine days in December - Los Serranos, CA
  • Average sunshine days in December: 25.2 days

The month with the most sunshine days is August (28.8 days).
The month with the least sunshine days is February (22.8 days).

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Average UV index in December
Los Serranos, CA

Average UV index in December - Los Serranos, CA
  • Average UV index in December: 4

The months with the highest UV index are July and August (UV index 7).
The months with the lowest UV index are January, February, November and December (UV index 4).

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Average cloud cover in December
Los Serranos, CA

Average cloud cover in December - Los Serranos, CA
  • Average cloud cover in December: 22

The months with the most cloud cover are February, March and December (Cloud cover 22).
The month with the least cloud cover is August (Cloud cover 5).

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Average visibility in December
Los Serranos, CA

Average visibility in December - Los Serranos, 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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Los Serranos, California, USA

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