December weather forecast
Santa Margarita, CA

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Weather in December

December, the first month of the winter in Santa Margarita, is still a refreshing month, with an average temperature varying between 42.8°F (6°C) and 58.5°F (14.7°C).

Temperature

December is the month that records the lowest temperatures, with averages ranging from a high of 58.5°F (14.7°C) to a low of 42.8°F (6°C).

Humidity

In Santa Margarita, California, the average relative humidity in December is 65%.

Rainfall

In Santa Margarita, during December, the rain falls for 7.6 days and regularly aggregates up to 1.38" (35mm) of precipitation. In Santa Margarita, during the entire year, the rain falls for 54.8 days and collects up to 8.66" (220mm) of precipitation.

Daylight

The month with the shortest days in Santa Margarita is December, with an average of 9h and 48min of daylight.
On the first day of December in Santa Margarita, sunrise is at 6:53 am and sunset at 4:49 pm. On the last day of the month, sunrise is at 7:11 am and sunset at 5:00 pm PST.

Sunshine

February and December, with an average of 6.3h of sunshine, are months with the least sunshine.

UV index

The months with the lowest UV index are February, November and December, with an average maximum UV index of 3. A UV Index value of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV radiation for average individuals.
Note: A maximum daily UV index of 3 during December morphs into the following directions:
Put precautions into practice - Protective measures against sun-induced damage are advised. The midday Sun can be dangerous due to its intense radiation; always find shade and reduce exposure. Tightly woven clothing, when worn loosely, shields effectively against the Sun.
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Frequently asked questions

What part of the year is the coldest in Santa Margarita?

December stands out as Santa Margarita's coldest month, with an average high-temperature of 58.5°F (14.7°C) and a low-temperature of 42.8°F (6°C).

What is the temperature in December in Santa Margarita?

During December, Santa Margarita experiences an average high-temperature of 58.5°F (14.7°C) and a low-temperature of 42.8°F (6°C). The average heat index (a.k.a. 'real feel', 'feels like'), which combines relative humidity and air temperature, in September is appraised at 84.2°F (29°C).

What is the average humidity in December in Santa Margarita?

In December, the average relative humidity is 65%.

How much does it rain in Santa Margarita in December?

In Santa Margarita, in December, during 7.6 rainfall days, 1.38" (35mm) of precipitation is typically accumulated.

What is the month with the shortest days in Santa Margarita?

December has the shortest days of the year in Santa Margarita, California, with an average of 9h and 48min of daylight.

What is the average length of the day in December in Santa Margarita?

The average day length in December is 9h and 49min.

When is the sunrise / sunset in December in Santa Margarita?

On the first day of December, sunrise is at 6:53 am and sunset at 4:49 pm. On the last day of the month, sunrise is at 7:11 am and sunset at 5:00 pm PST.

What are the months with the least sunshine in Santa Margarita?

February and December, with an average of 6.3h of sunshine, are months with the least sunshine in Santa Margarita.

How long on average sun shines in December in Santa Margarita?

In December, the average sunshine duration is 6.3h.

What is the month with the lowest UV index in Santa Margarita?

February, November and December, with an average maximum UV index of 3, are months with the lowest UV index in Santa Margarita.

How high is the UV index in December in Santa Margarita?

The average daily maximum UV index in December is 3. A UV Index of 3 to 5 symbolizes a moderate vulnerability 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
Santa Margarita, CA

Average temperature in December - Santa Margarita, CA
  • Average high temperature in December: 58.5°F

The warmest month (with the highest average high temperature) is August (85.5°F).
The month with the lowest average high temperature is December (58.5°F).

  • Average low temperature in December: 42.8°F

The month with the highest average low temperature is September (59.9°F).
The coldest month (with the lowest average low temperature) is December (42.8°F).

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Average pressure in December
Santa Margarita, CA

Average pressure in December - Santa Margarita, CA
  • Average pressure in December: 30.1"Hg

The month with the highest atmospheric pressure is January (30.12"Hg).
The months with the lowest atmospheric pressure are June, August and September (29.91"Hg).

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Average wind speed in December
Santa Margarita, CA

Average wind speed in December - Santa Margarita, CA
  • Average wind speed in December: 5.7mph

The windiest months (with the highest average wind speed) are March and April (5.9mph).
The calmest months (with the lowest average wind speed) are August and September (4.5mph).

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Average humidity in December
Santa Margarita, CA

Average humidity in December - Santa Margarita, CA
  • Average humidity in December: 65%

The months with the highest relative humidity are February and March (68%).
The month with the lowest relative humidity is September (50%).

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Average rainfall in December
Santa Margarita, CA

Average rainfall in December - Santa Margarita, CA
  • Average rainfall in December: 1.38"

The wettest month (with the highest rainfall) is March (1.73").
The driest months (with the least rainfall) are June and August (0.04").

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Average rainfall days in December
Santa Margarita, CA

Average rainfall days in December - Santa Margarita, CA
  • Average rainfall days in December: 7.6 days

The month with the highest number of rainy days is March (10.2 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
Santa Margarita, CA

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

The month with the longest days is June (Average daylight: 14h and 30min).
The month with the shortest days is December (Average daylight: 9h and 48min).

  • Average sunshine in December: 6h and 2min

The months with the most sunshine are June and July (Average sunshine: 12h and 0min).
The months with the least sunshine are February and December (Average sunshine: 6h and 18min).

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Average sunshine days in December
Santa Margarita, CA

Average sunshine days in December - Santa Margarita, CA
  • Average sunshine days in December: 22 days

The month with the most sunshine days is August (29.8 days).
The month with the least sunshine days is February (19.7 days).

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Average UV index in December
Santa Margarita, CA

Average UV index in December - Santa Margarita, CA
  • Average UV index in December: 3

The months with the highest UV index are June, July, August and September (UV index 6).
The months with the lowest UV index are February, November and December (UV index 3).

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Average cloud cover in December
Santa Margarita, CA

Average cloud cover in December - Santa Margarita, CA
  • Average cloud cover in December: 29

The month with the most cloud cover is March (Cloud cover 31).
The month with the least cloud cover is August (Cloud cover 6).

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Average visibility in December
Santa Margarita, CA

Average visibility in December - Santa Margarita, 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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Santa Margarita, California, USA

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