Granite Bay
California, USA
Long-term weather forecast
Long-term weather forecast

December weather forecast and climate
Granite Bay, CA

December, the first month of the winter, in Granite Bay, is also a fresh month, with average temperature varying between 39°F (3.9°C) and 54°F (12.2°C).

Temperature

In December, the average high-temperature drops, from an enjoyable 63°F (17.2°C) in November, to a cool 54°F (12.2°C). The average low-temperature, in Granite Bay, is 39°F (3.9°C).

Rainfall

Throughout December, 3.3" (84.6mm) of precipitation is accumulated. During the entire year, Granite Bay aggregates up to 20.4" (519.3mm) of precipitation.

Daylight

December has the shortest days of the year, with an average of 9.5h of daylight.

What is the temperature in December in Granite Bay?

The average high-temperature, in December, in Granite Bay, California, is 54°F (12.2°C), while the average low-temperature is 39°F (3.9°C).

How much does it rain in Granite Bay in December?

In Granite Bay, California, in December, 3.3" (84.6mm) of precipitation is typically accumulated.

What is the month with the shortest days in Granite Bay?

The month with the shortest days is December, with an average of 9.5h of daylight.

How many hours of daylight does Granite Bay have in December?

In Granite Bay, California, the average length of the day in December is 9.5h.
Average temperature in December - Granite Bay, CA
  • Average high temperature in December: 54°F

The warmest month (with the highest average high temperature) is July (94°F).
The month with the lowest average high temperature is January (53°F).

  • Average low temperature in December: 39°F

Months with the highest average low temperature are July and August (61°F).
Coldest months (with the lowest average low temperature) are January and December (39°F).

Average rainfall in December - Granite Bay, CA
  • Average rainfall in December: 3.3"

The wettest month (with the highest rainfall) is January (4").
The driest month (with the lowest rainfall) is July (0").

Average daylight in December - Granite Bay, CA
  • Average daylight in December: 9.5h

The month with the longest days is June (Average daylight: 14.9h).
The month with shortest days is December (Average daylight: 9.5h).