December weather forecast and climate
Brentwood, CA

An aerial shot of scenic and organized home community in Brentwood City, California
An aerial shot of scenic and organized home community in Brentwood City, California

Temperature

In Brentwood, the average high-temperature is 55°F (12.8°C), and the average low-temperature is 39°F (3.9°C).

Rainfall

During December, Brentwood regularly aggregates up to 2.4" (61.2mm) of precipitation. During the entire year, Brentwood aggregates up to 13.3" (337.7mm) of precipitation.

Daylight

December has the shortest days of the year, with an average of 9.6h of daylight.

What is the temperature in December in Brentwood?

In Brentwood, in December, the average high-temperature is 55°F (12.8°C), and the average low-temperature is 39°F (3.9°C).

How much does it rain in Brentwood in December?

Throughout December, in Brentwood, California, 2.4" (61.2mm) of precipitation is accumulated.

What is the month with the shortest days in Brentwood?

With an average of 9.6h of daylight, December has the shortest days of the year in Brentwood.

How many hours of daylight does Brentwood have in December?

In Brentwood, the average length of the day in December is 9.6h.
Average temperature in December - Brentwood, CA
  • Average high temperature in December: 55°F

The warmest month (with the highest average high temperature) is July (92°F).
The month with the lowest average high temperature is January (54°F).

  • Average low temperature in December: 39°F

Months with the highest average low temperature are July and August (59°F).
Coldest months (with the lowest average low temperature) are January and December (39°F).

Average rainfall in December - Brentwood, CA
  • Average rainfall in December: 2.4"

The wettest month (with the highest rainfall) is January (2.7").
Driest months (with the lowest rainfall) are July and August (0").

Average daylight in December - Brentwood, CA
  • Average daylight in December: 9.6h

The month with the longest days is June (Average daylight: 14.8h).
The month with shortest days is December (Average daylight: 9.6h).

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