December weather forecast
Temecula, CA

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

December, the first month of the winter, in Temecula, is still a comfortable month, with average temperature ranging between max 61.7°F (16.5°C) and min 43.5°F (6.4°C).

Temperature

December is the coldest month, with an average high-temperature of 61.7°F (16.5°C) and an average low-temperature of 43.5°F (6.4°C).

Humidity

In Temecula, California, the average relative humidity is 58%.

Rainfall

The month with the most rainfall 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 of daylight, December has the shortest days of the year.

Sunshine

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

UV index

The month with the lowest UV index is December, with an average maximum UV index of 3. A UV Index value of 3 to 5 symbolizes a medium vulnerability from the exposure to the Sun's UV radiation for average individuals.
Note: In December, the average maximum UV index of 3 translate into the following recommendations:
Take precautions - Protection against sun damage is advised. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.
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FAQ

What is the coldest month in Temecula?

With an average high-temperature of 61.7°F (16.5°C) and an average low-temperature of 43.5°F (6.4°C), December is the coldest month in Temecula.

What is the average humidity in December in Temecula?

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

What is the wettest month in Temecula?

December is the month with the most rainfall in Temecula, California. Rain falls for 6.5 days and accumulates 1.81" (46mm) of precipitation.

How many days does it rain in December in Temecula?

In Temecula, in December, during 6.5 rainfall days, 1.81" (46mm) of precipitation is typically accumulated.

What is the month with the shortest days in Temecula?

The month with the shortest days in Temecula is December, with an average of 10h of daylight.

What is the average length of the day in December in Temecula?

In Temecula, the average length of the day in December is 10h.

What is the month with the least sunshine in Temecula?

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

How many hours of sunshine does Temecula have in December?

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

When is the lowest UV index in Temecula?

December is the month with the lowest UV index in Temecula, California, 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 in Temecula is 3. A UV Index of 3 to 5 symbolizes a moderate vulnerability from unsafe exposure to the Sun's UV rays.

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"

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

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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

The month with the longest days is June (Average daylight: 14.4h).
The month with the shortest days is December (Average daylight: 10h).

  • Average sunshine in December: 6.5h

The month with the most sunshine is July (Average sunshine: 12.1h).
The month with the least sunshine is December (Average sunshine: 6.5h).

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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

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

Months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).

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