San Rafael
California, USA
Long-term weather forecast
Long-term weather forecast

December weather forecast and climate
San Rafael, CA

December, the first month of the winter, in San Rafael, is also a fresh month, with average temperature ranging between min 41°F (5°C) and max 55°F (12.8°C).

Temperature

The coldest months are January and December, with an average high-temperature of 55°F (12.8°C).

Rainfall

In San Rafael, it is raining for 10.4 days, with typically 6" (151.6mm) of accumulated precipitation. Throughout the year, in San Rafael, California, there are 64.3 rainfall days, and 32.2" (817.2mm) of precipitation is accumulated.

Daylight

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

What is the coldest month in San Rafael?

January and December, with an average high-temperature of 55°F (12.8°C), are the coldest months in San Rafael, California.

What is the temperature in December in San Rafael?

The average high-temperature, in December, is 55°F (12.8°C), while the average low-temperature is 41°F (5°C).

How much does it rain in San Rafael in December?

In San Rafael, in December, it is raining for 10.4 days, with typically 6" (151.6mm) of accumulated precipitation.

What is the month with the shortest days in San Rafael?

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

How many hours of daylight does San Rafael have in December?

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

Warmest months (with the highest average high temperature) are July and August (80°F).
Months with the lowest average high temperature are January and December (55°F).

  • Average low temperature in December: 41°F

Months with the highest average low temperature are July and August (55°F).
The coldest month (with the lowest average low temperature) is December (41°F).

Average rainfall in December - San Rafael, CA
  • Average rainfall in December: 6"

The wettest month (with the highest rainfall) is February (7.9").
The driest month (with the lowest rainfall) is July (0").

Average rainfall days in December - San Rafael, CA
  • Average rainfall days in December: 10.4 days

The month with the highest number of rainy days is January (12.2 days).
The month with the lowest number of rainy days is July (0 days).

Average daylight in December - San Rafael, 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).