December weather forecast
Birds Landing, CA

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Weather in December

The first month of the winter, December, is still a cool month in Birds Landing, California, with an average temperature varying between 41.7°F (5.4°C) and 55.2°F (12.9°C).

Temperature

In Birds Landing, December is the coldest month, with temperatures averaging a high of 55.2°F (12.9°C) and a low of 41.7°F (5.4°C).

Humidity

The average relative humidity in December is 71%.

Rainfall

In Birds Landing, in December, it is raining for 5.9 days, with typically 0.39" (10mm) of accumulated precipitation. In Birds Landing, during the entire year, the rain falls for 37.4 days and collects up to 2.44" (62mm) of precipitation.

Daylight

December has the shortest days of the year, with an average of 9h and 36min of daylight.
On the first day of the month, sunrise is at 7:05 am and sunset at 4:47 pm. On the last day of December, sunrise is at 7:23 am and sunset at 4:57 pm PST.

Sunshine

December has the least sunshine of the year, with an average of 5.8h of sunshine.

UV index

January, February, November and December, with an average maximum UV index of 3, are months with the lowest UV index. A UV Index estimate of 3 to 5 represents a medium health hazard from unsafe exposure to UV radiation for the ordinary person.
Note: A maximum high daily UV index of 3 during December translates into the following directions:
Exercise prevention - Protecting skin and eyes from harm is required. When the Sun's UV radiation is most intense during midday, it's best to find shade and limit exposure. Stay sun-safe with clothing that is both closely woven and worn loosely.
Updated: Jun 18, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the coldest month in Birds Landing?

December, with its high-temperature average of 55.2°F (12.9°C) and a low-temperature average of 41.7°F (5.4°C), is the coldest month.

What are December temperatures?

The high-temperature in Birds Landing during December is 55.2°F (12.9°C) and the low-temperature is 41.7°F (5.4°C). In September, the average heat index (a.k.a. 'feels like', 'felt air temperature'), which combines air temperature and relative humidity, is evaluated at 87.8°F (31°C).

What is the average humidity in December?

The average relative humidity in December is 71%.

How much does it rain in December?

In December, the rain falls for 5.9 days. Throughout December, 0.39" (10mm) of precipitation is accumulated.

What is the month with the shortest days?

With an average of 9h and 36min of daylight, December has the shortest days of the year.

What is the average length of the day in December?

The average day length in December is 9h and 34min.

When is the sunrise / sunset in December?

In December, on the first day of the month, sunrise is at 7:05 am and sunset at 4:47 pm. On the last day of the month, sunrise is at 7:23 am and sunset at 4:57 pm PST.

What is the month with the least sunshine?

December has the least sunshine of the year, with an average of 5.8h of sunshine.

How many hours of sunshine does Birds Landing have in December?

The average sunshine duration in December is 5.8h.

When is the lowest UV index?

The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 3.

What is the UV index reading in December?

In December, the average daily maximum UV index is 3. A UV Index of 3 to 5 symbolizes a moderate health threat 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
Birds Landing, CA

Average temperature in December - Birds Landing, CA
  • Average high temperature in December: 55.2°F

The warmest month (with the highest average high temperature) is July (87.4°F).
The month with the lowest average high temperature is December (55.2°F).

  • Average low temperature in December: 41.7°F

The month with the highest average low temperature is September (57.7°F).
The coldest month (with the lowest average low temperature) is January (41.5°F).

Average pressure in December
Birds Landing, CA

Average pressure in December - Birds Landing, CA
  • Average pressure in December: 30.11"Hg

The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).

Average wind speed in December
Birds Landing, CA

Average wind speed in December - Birds Landing, CA
  • Average wind speed in December: 4.9mph

The windiest month (with the highest average wind speed) is June (7.6mph).
The calmest months (with the lowest average wind speed) are January and November (4.5mph).

Average humidity in December
Birds Landing, CA

Average humidity in December - Birds Landing, CA
  • Average humidity in December: 71%

The months with the highest relative humidity are January and March (73%).
The month with the lowest relative humidity is September (53%).

Average rainfall in December
Birds Landing, CA

Average rainfall in December - Birds Landing, CA
  • Average rainfall in December: 0.39"

The wettest month (with the highest rainfall) is February (0.59").
The driest months (with the least rainfall) are June, July and August (0").

Average rainfall days in December
Birds Landing, CA

Average rainfall days in December - Birds Landing, CA
  • Average rainfall days in December: 5.9 days

The month with the highest number of rainy days is March (8.1 days).
The month with the least rainy days is August (0.5 days).

Average daylight in December /
Average sunshine in December
Birds Landing, CA

Average daylight in December / Average sunshine in December - Birds Landing, CA
  • Average daylight in December: 9h and 4min

The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 36min).

  • Average sunshine in December: 5h 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: 5h and 48min).

Average sunshine days in December
Birds Landing, CA

Average sunshine days in December - Birds Landing, CA
  • Average sunshine days in December: 24.5 days

The months with the most sunshine days are July and August (30.3 days).
The month with the least sunshine days is March (21.8 days).

Average UV index in December
Birds Landing, CA

Average UV index in December - Birds Landing, CA
  • Average UV index in December: 3

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

Average cloud cover in December
Birds Landing, CA

Average cloud cover in December - Birds Landing, CA
  • Average cloud cover in December: 35

The month with the most cloud cover is March (Cloud cover 36).
The month with the least cloud cover is July (Cloud cover 5).

Average visibility in December
Birds Landing, CA

Average visibility in December - Birds Landing, 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).

Birds Landing, California, USA

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