Mill Valley
California, USA
Long-term weather forecast
Long-term weather forecast

December weather forecast and climate
Mill Valley, CA

The first month of the winter, December, is also a moderate month in Mill Valley, California, with temperature in the range of an average low of 41°F (5°C) and an average high of 55.9°F (13.3°C).

Temperature

The coldest months are January and December, with an average high-temperature of 55.9°F (13.3°C).

Daylight

The month with the shortest days in Mill Valley is December, with an average of 9.6h of daylight.

What are the coldest months in Mill Valley?

The coldest months in Mill Valley are January and December, with an average high-temperature of 55.9°F (13.3°C).

What is the temperature in December in Mill Valley?

In Mill Valley, California, in December, the average high-temperature is 55.9°F (13.3°C), and the average low-temperature is 41°F (5°C).

What is the month with the shortest days in Mill Valley?

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

How many hours of daylight does Mill Valley have in December?

In December, the average length of the day in Mill Valley is 9.6h.
Average temperature in December - Mill Valley, CA
  • Average high temperature in December: 56°F

The warmest month (with the highest average high temperature) is July (85°F).
Months with the lowest average high temperature are January and December (56°F).

  • Average low temperature in December: 41°F

The month with the highest average low temperature is August (54°F).
Coldest months (with the lowest average low temperature) are January and December (41°F).

Average daylight in December - Mill Valley, 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).