Mill Valley weather in December (California, United States of America)
Will it be warm or cold in Mill Valley this December? Is now the perfect time to visit? Find all the weather insights for this month on this page.
Temperatures
In December, the weather in Mill Valley generally includes moderate temperatures and heavy rainfall. During the day, temperatures usually reach up to 14°C. At night, they tend to fall to approximately 6°C. Expect the coolest temperatures of the year during December.
Precipitation
Mill Valley in December usually receives heavy rainfall, averaging around 172 mm for the month. The month is marked by heavy rainfall, often coming down in intense bursts. Make sure to have a poncho to stay dry. Records from the past 30 years suggest that around 13 days will experience rain.Average sunshine
The month experiences a moderate amount of sunlight, with 160 hours hours. A nice balance between sunshine and clouds.If you're looking for dry conditions and comfortable temperatures, December may not be the ideal month to visit Mill Valley. May, June, July, August, September and October generally stand out with the best circumstances. While January, February and December tend to showcase less optimal conditions.
For an in-depth look at the yearly conditions, visit our specialized Mill Valley climate page with graphs.
Mill Valley, monthly averages in December
Min Temperature
6°C
Max Temperature
14°C
Chance of Rain
43%
Precipitation
172 mm
Rainy days
13 days
Humidity
78% *
Sunshine
160 hours *
Percentage Sunshine
54% *
Where to go in the United States of America in December
Find out more about the weather in the United States of America and which places have the best travel conditions in this month.
perfect weather
pleasant
tolerable
unpleasant
poor
So, what should you wear in this month?
Plan on layering your clothes. Some days or part of the day it will be nice and warm and some moments it can be a bit chilly. Bring a rain jacket in case it rains during your stay.What To Do
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Interested in more climate information?
This site provides you with all the information you need about the climate in Mill Valley.
Our site offers climate and forecast data for every country in the world. Are you going to the United States of America? On this website you can find historical weather averages for many cities in the United States of America. Not sure yet where to go? We now have a tool which recommends destinations that suit your ideal travel conditions. Find out where to go with our weather planner.
