December weather forecast
Newbury Park, CA

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Intense road network and dense home population in Thousand Oaks and Ventura County in Newbury Park, California
Intense road network and dense home population in Thousand Oaks and Ventura County in Newbury Park, California

Weather in December

The first month of the winter, December, is still a mild month in Newbury Park, California, with temperature in the range of an average high of 60.4°F (15.8°C) and an average low of 49.3°F (9.6°C).

Temperature

Newbury Park records the coldest temperatures in December, averaging a high of 60.4°F (15.8°C) and a low of 49.3°F (9.6°C).

Humidity

In Newbury Park, the average relative humidity in December is 57%.

Rainfall

In Newbury Park, in December, it is raining for 5.9 days, with typically 1.61" (41mm) of accumulated precipitation. Throughout the year, there are 51.2 rainfall days, and 9.41" (239mm) of precipitation is accumulated.

Daylight

With an average of 9h and 54min of daylight, December has the shortest days of the year in Newbury Park.
On the first day of December, sunrise is at 6:43 am and sunset at 4:45 pm. On the last day of the month, sunrise is at 7:01 am and sunset at 4:56 pm PST.

Sunshine

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

UV index

The months with the lowest UV index are January through April, November and December, with an average maximum UV index of 4. A UV Index of 3 to 5 symbolizes a medium health hazard from unsafe exposure to UV radiation for the ordinary person.
Note: In December, the average maximum UV index of 4 translates into the following recommendations:
Take heed. Individuals of lighter complexion can be burned in less than half an hour. The Sun's UV radiation is especially harmful around midday, so reduce exposure and stay safe. Loose clothes with a tight weave are optimal for safeguarding yourself against the Sun's rays.
Updated: Aug 31, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What are the coldest months?

The coldest month is December, with an average high-temperature of 60.4°F (15.8°C) and an average low-temperature of 49.3°F (9.6°C).

What are December temperatures?

During December, Newbury Park experiences an average high-temperature of 60.4°F (15.8°C) and a low-temperature of 49.3°F (9.6°C).

What is the average humidity in December?

In Newbury Park, the average relative humidity in December is 57%.

How much does it rain in Newbury Park in December?

In Newbury Park, in December, during 5.9 rainfall days, 1.61" (41mm) of precipitation is typically accumulated.

What is the month with the shortest days?

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

How many hours of daylight does Newbury Park have in December?

The average day length in December is 9h and 55min.

What time are sunrise and sunset in December?

In December, on the first day of the month, sunrise is at 6:43 am and sunset at 4:45 pm. On the last day of the month, sunrise is at 7:01 am and sunset at 4:56 pm PST.

What are the months with the least sunshine?

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

How long on average sun shines in December?

The average sunshine duration in December is 6.8h.

What is the month with the lowest UV index?

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

What is the UV index reading in December?

In December, the average daily maximum UV index is 4. A UV Index value of 3 to 5 symbolizes a medium hazard to health 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
Newbury Park, CA

Average temperature in December - Newbury Park, CA
  • Average high temperature in December: 60.4°F

The warmest month (with the highest average high temperature) is August (78.4°F).
The month with the lowest average high temperature is December (60.4°F).

  • Average low temperature in December: 49.3°F

The month with the highest average low temperature is August (63.7°F).
The coldest month (with the lowest average low temperature) is February (49.1°F).

Average pressure in December
Newbury Park, CA

Average pressure in December - Newbury Park, CA
  • Average pressure in December: 30.08"Hg

The month with the highest atmospheric pressure is January (30.11"Hg).
The months with the lowest atmospheric pressure are June and September (29.9"Hg).

Average wind speed in December
Newbury Park, CA

Average wind speed in December - Newbury Park, CA
  • Average wind speed in December: 6.5mph

The windiest months (with the highest average wind speed) are April and December (6.5mph).
The calmest month (with the lowest average wind speed) is August (4.6mph).

Average humidity in December
Newbury Park, CA

Average humidity in December - Newbury Park, CA
  • Average humidity in December: 57%

The month with the highest relative humidity is June (69%).
The month with the lowest relative humidity is November (53%).

Average rainfall in December
Newbury Park, CA

Average rainfall in December - Newbury Park, CA
  • Average rainfall in December: 1.61"

The wettest months (with the highest rainfall) are January and February (1.93").
The driest month (with the least rainfall) is June (0.08").

Average rainfall days in December
Newbury Park, CA

Average rainfall days in December - Newbury Park, CA
  • Average rainfall days in December: 5.9 days

The month with the highest number of rainy days is March (7.3 days).
The month with the least rainy days is August (1.5 days).

Average daylight in December /
Average sunshine in December
Newbury Park, CA

Average daylight in December / Average sunshine in December - Newbury Park, 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 January, February and December (Average sunshine: 6h and 48min).

Average sunshine days in December
Newbury Park, CA

Average sunshine days in December - Newbury Park, CA
  • Average sunshine days in December: 23.7 days

The month with the most sunshine days is August (26.2 days).
The month with the least sunshine days is February (21 days).

Average UV index in December
Newbury Park, CA

Average UV index in December - Newbury Park, CA
  • Average UV index in December: 4

The months with the highest UV index are June, July, August and September (UV index 6).
The months with the lowest UV index are January, February, March, April, November and December (UV index 4).

Average cloud cover in December
Newbury Park, CA

Average cloud cover in December - Newbury Park, 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).

Average visibility in December
Newbury Park, CA

Average visibility in December - Newbury Park, 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).

Newbury Park, California, USA

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