December weather forecast
Yorba Linda, CA

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Weather in December

December, the first month of the winter in Yorba Linda, is also an enjoyable month, with an average temperature fluctuating between 64°F (17.8°C) and 49.5°F (9.7°C).

Temperature

Yorba Linda's December weather reaches an average high of 64°F (17.8°C) and an average low of 49.5°F (9.7°C), making it the coldest month.

Humidity

The average relative humidity in December in Yorba Linda is 53%.

Rainfall

The month with the most rainfall is December, when the rain falls for 6.2 days and typically aggregates up to 1.54" (39mm) of precipitation.

Daylight

With an average of 9h and 54min of daylight, December has the shortest days of the year in Yorba Linda.
On the first day of the month, sunrise is at 6:38 am and sunset at 4:42 pm. On the last day of December, in Yorba Linda, sunrise is at 6:56 am and sunset at 4:52 pm PST.

Sunshine

December has the least sunshine of the year, with an average of 6.8h of sunshine.

UV index

January, February, November and December, with an average maximum UV index of 4, are months with the lowest UV index in Yorba Linda. A UV Index of 3 to 5 symbolizes a medium vulnerability from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: The daily maximum UV index of 4 in December interprets into the following advice:
Preventative actions are necessary - The mandate to avoid skin and eye damage is in place. Protect yourself from the midday Sun's peak UV radiation by minimizing exposure. Sun protection is enhanced with clothing that boasts a tight weave yet offers a loose fit.
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Frequently asked questions

What month is the coldest in Yorba Linda?

Yorba Linda reaches its average lowest temperatures in December, measuring 64°F (17.8°C) at the peak and 49.5°F (9.7°C) at the lowest.

What is the usual temperature for Yorba Linda in December?

In Yorba Linda, in December, the average high-temperature is 64°F (17.8°C), and the average low-temperature is 49.5°F (9.7°C). In September, the average heat index (a.k.a. 'apparent temperature', 'felt air temperature'), which factors the actual air temperature with the relative humidity, is estimated at 86°F (30°C).

What is the average humidity in December in Yorba Linda?

The average relative humidity in December in Yorba Linda, California, is 53%.

What is the rainiest month in Yorba Linda?

The month with the most rainfall is December, when the rain falls for 6.2 days and typically aggregates up to 1.54" (39mm) of precipitation.

How many days does it rain in December in Yorba Linda?

In Yorba Linda, during December, the rain falls for 6.2 days and regularly aggregates up to 1.54" (39mm) of precipitation.

What is the month with the shortest days in Yorba Linda?

December has the shortest days of the year, with an average of 9h and 54min of daylight.

How many hours of daylight does Yorba Linda have in December?

The average day length in December in Yorba Linda, California, is 9h and 56min.

When is the sunrise / sunset in December in Yorba Linda?

On the first day of December, sunrise is at 6:38 am and sunset at 4:42 pm. On the last day of the month, sunrise is at 6:56 am and sunset at 4:52 pm PST.

What is the month with the least sunshine in Yorba Linda?

The month with the least sunshine in Yorba Linda, California, is December, with an average of 6.8h of sunshine.

How many hours of sunshine does Yorba Linda have in December?

In Yorba Linda, the average sunshine duration in December is 6.8h.

When is the lowest UV index in Yorba Linda?

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 Yorba Linda?

The average daily maximum UV index in December in Yorba Linda is 4. A UV Index estimate of 3 to 5 represents a medium hazard to health 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
Yorba Linda, CA

Average temperature in December - Yorba Linda, CA
  • Average high temperature in December: 64°F

The warmest month (with the highest average high temperature) is August (86.7°F).
The month with the lowest average high temperature is December (64°F).

  • Average low temperature in December: 49.5°F

The month with the highest average low temperature is August (65.8°F).
The coldest month (with the lowest average low temperature) is February (48.9°F).

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Average pressure in December
Yorba Linda, CA

Average pressure in December - Yorba Linda, CA
  • Average pressure in December: 30.07"Hg

The month with the highest atmospheric pressure is January (30.1"Hg).
The months with the lowest atmospheric pressure are June and September (29.88"Hg).

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Average wind speed in December
Yorba Linda, CA

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

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

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Average humidity in December
Yorba Linda, CA

Average humidity in December - Yorba Linda, CA
  • Average humidity in December: 53%

The months with the highest relative humidity are May and June (61%).
The month with the lowest relative humidity is November (49%).

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Average rainfall in December
Yorba Linda, CA

Average rainfall in December - Yorba Linda, CA
  • Average rainfall in December: 1.54"

The wettest month (with the highest rainfall) is December (1.54").
The driest month (with the least rainfall) is June (0.04").

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Average rainfall days in December
Yorba Linda, CA

Average rainfall days in December - Yorba Linda, CA
  • Average rainfall days in December: 6.2 days

The month with the highest number of rainy days is March (6.8 days).
The month with the least rainy days is June (1.2 days).

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Average daylight in December /
Average sunshine in December
Yorba Linda, CA

Average daylight in December / Average sunshine in December - Yorba Linda, 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 month with the least sunshine is December (Average sunshine: 6h and 48min).

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Average sunshine days in December
Yorba Linda, CA

Average sunshine days in December - Yorba Linda, CA
  • Average sunshine days in December: 23 days

The month with the most sunshine days is August (25.9 days).
The month with the least sunshine days is February (21.2 days).

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Average UV index in December
Yorba Linda, CA

Average UV index in December - Yorba Linda, CA
  • Average UV index in December: 4

The month with the highest UV index is 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
Yorba Linda, CA

Average cloud cover in December - Yorba Linda, CA
  • Average cloud cover in December: 22

The months with the most cloud cover are 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
Yorba Linda, CA

Average visibility in December - Yorba Linda, 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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Yorba Linda, California, USA

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