Castro Valley weather in December (California, United States of America)
How is December weather typically in Castro Valley? This guide provides the necessary weather information for your travel plans.
Temperatures
In December, Castro Valley usually has moderate temperatures and high rainfall. December is part of winter. During the day, temperatures can climb to about 14°C. At night, they may fall to a cooler 5°C. December usually brings the most temperate weather conditions of the year.
Precipitation
Castro Valley in December usually receives high rainfall, averaging around 111 mm for the month. Given that this is the rainiest month, it's wise to carry an umbrella to stay dry during unexpected showers. On average, there are about 13 days with rain during this month.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 Castro Valley. May, June, July, August, September and October typically offer the most agreeable circumstances. On the other hand, December tends to be characterized by conditions that may not be as optimal.
For an in-depth look at the yearly conditions, visit our specialized Castro Valley climate page with graphs.
Castro Valley, monthly averages in December
Min Temperature
5°C
Max Temperature
14°C
Chance of Rain
44%
Precipitation
111 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 Castro 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.
