December weather forecast
Temecula, CA

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Beautiful sunlit homes in a stunning neighborhood in the Corte Morelia region, Temecula City, California
Beautiful sunlit homes in a stunning neighborhood in the Corte Morelia region, Temecula City, California

Weather in December

Finally, December ushers in the winter season in Temecula with dropping temperatures and increased cloud cover. Following a drier November, rainfall in December reaches a peak from 1.81" (46mm) setting it apart as the wettest month of the year. The month also observes the least amount of sunshine hours, in contrast to the high that was experienced during summer months. Despite the slight increase in average wind speed from November to December, the wind retains its chill, making December the beginning of the cold season. The drop in UV index is another characteristic of the wintry month, rounding out the variations in the weather cycle over the year in Temecula, California.

Temperature

December proves to be the coldest month, recording an average maximum temperature of 61.7°F (16.5°C) and a minimum temperature of 43.5°F (6.4°C).

Humidity

In December, the average relative humidity in Temecula is 58%.

Rainfall

The month with the most rainfall in Temecula is December, when the rain falls for 6.5 days and typically aggregates up to 1.81" (46mm) of precipitation.

Daylight

With an average of 10h and 0min of daylight, December has the shortest days of the year in Temecula.
On the first day of December in Temecula, sunrise is at 6:35 am and sunset at 4:40 pm. On the last day of the month, sunrise is at 6:52 am and sunset at 4:51 pm PST.

Sunshine

The month with the least sunshine in Temecula is December, with an average of 6.5h of sunshine.

UV index

December is the month with the lowest UV index, with an average maximum UV index of 3. A UV Index estimate of 3 to 5 represents a medium health hazard from exposure to the Sun's UV radiation for ordinary individuals.
Note: The maximum daily UV index of 3 during December translates into the following directions:
Ensure safety - Imperative it is to shield skin and eyes from damage. To protect against the Sun's most potent rays, avoid direct exposure around midday. To cut down UV radiation exposure by about half, sport a wide-brim hat.
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Frequently asked questions

What time of the year is the coldest in Temecula?

Temecula's coldest weather arrives in December, when temperatures average a high of 61.7°F (16.5°C) and a low of 43.5°F (6.4°C).

What is the average December temperature in Temecula?

In December, the average high-temperature and low-temperature in Temecula, California, are 61.7°F (16.5°C) and 43.5°F (6.4°C) respectively. The average heat index (a.k.a. 'feels like', 'real feel'), which represents the influence of relative humidity on air temperature, in September is evaluated at 87.8°F (31°C).

What is the average humidity in December in Temecula?

The average relative humidity in December in Temecula is 58%.

What is the rainiest month in Temecula?

The month with the most rainfall in Temecula is December, when the rain falls for 6.5 days and typically aggregates up to 1.81" (46mm) of precipitation.

How many days does it rain in December in Temecula?

In December, in Temecula, the rain falls for 6.5 days. Throughout December, 1.81" (46mm) of precipitation is accumulated.

What is the month with the shortest days in Temecula?

With an average of 10h and 0min of daylight, December has the shortest days of the year.

How many hours of daylight does Temecula have in December?

In Temecula, California, the average day length in December is 9h and 59min.

When is the sunrise / sunset in December in Temecula?

On the first day of December, sunrise is at 6:35 am and sunset at 4:40 pm. On the last day of the month, sunrise is at 6:52 am and sunset at 4:51 pm PST.

What is the month with the least sunshine in Temecula?

December has the least sunshine of the year, with an average of 6.5h of sunshine.

How long on average sun shines in December in Temecula?

In Temecula, California, the average sunshine duration in December is 6.5h.

When is the lowest UV index in Temecula?

The month with the lowest UV index is December, with an average maximum UV index of 3.

What is the UV index intensity in December in Temecula?

The average daily maximum UV index in December is 3. A UV Index estimate of 3 to 5 represents a medium health risk from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in December
Temecula, CA

Average temperature in December - Temecula, CA
  • Average high temperature in December: 61.7°F

The warmest month (with the highest average high temperature) is August (87.4°F).
The month with the lowest average high temperature is December (61.7°F).

  • Average low temperature in December: 43.5°F

The month with the highest average low temperature is August (62.2°F).
The coldest month (with the lowest average low temperature) is February (43.3°F).

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Average pressure in December
Temecula, CA

Average pressure in December - Temecula, CA
  • Average pressure in December: 30.06"Hg

The month with the highest atmospheric pressure is January (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.86"Hg).

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Average wind speed in December
Temecula, CA

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

The windiest month (with the highest average wind speed) is April (5.5mph).
The calmest month (with the lowest average wind speed) is September (4.3mph).

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Average humidity in December
Temecula, CA

Average humidity in December - Temecula, CA
  • Average humidity in December: 58%

The month with the highest relative humidity is May (65%).
The month with the lowest relative humidity is November (52%).

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Average rainfall in December
Temecula, CA

Average rainfall in December - Temecula, CA
  • Average rainfall in December: 1.81"

The wettest month (with the highest rainfall) is December (1.81").
The driest month (with the least rainfall) is June (0.04").

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Average rainfall days in December
Temecula, CA

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

The month with the highest number of rainy days is March (8.2 days).
The month with the least rainy days is June (1.4 days).

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

Average daylight in December / Average sunshine in December - Temecula, CA
  • Average daylight in December: 10h and 0min

The month with the longest days is June (Average daylight: 14h and 18min).
The month with the shortest days is December (Average daylight: 10h and 0min).

  • Average sunshine in December: 6h and 3min

The month with the most sunshine is July (Average sunshine: 12h and 6min).
The month with the least sunshine is December (Average sunshine: 6h and 30min).

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Average sunshine days in December
Temecula, CA

Average sunshine days in December - Temecula, CA
  • Average sunshine days in December: 23.4 days

The month with the most sunshine days is June (26.5 days).
The month with the least sunshine days is February (20.8 days).

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Average UV index in December
Temecula, CA

Average UV index in December - Temecula, CA
  • Average UV index in December: 3

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

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Average cloud cover in December
Temecula, CA

Average cloud cover in December - Temecula, CA
  • Average cloud cover in December: 26

The month with the most cloud cover is March (Cloud cover 27).
The month with the least cloud cover is August (Cloud cover 7).

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Average visibility in December
Temecula, CA

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

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