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Petaluma weather in December (California, United States of America)

Will it be rainy or sunny in Petaluma this December? Here's what you need to know about the weather for the month.

Temperatures

The month of December in Petaluma typically brings moderate temperatures and high rainfall. December is typically considered a winter month. The temperature during the day can rise to approximately 14°C. At night, it falls to around 3°C. This time of year is characterized by the most temperate weather of all the months.

Precipitation

Petaluma in December usually receives high rainfall, averaging around 135 mm for the month. This is the wettest month of the year, so having an umbrella ready is a smart choice. Typically around 12 days days of rainfall are expected.

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 Petaluma. April, May, June, July, August, September and October typically offer the most agreeable circumstances. On the other hand, January, February and December tend to be characterized by conditions that may not be as optimal.

For an in-depth look at the yearly conditions, visit our specialized Petaluma climate page with graphs.

 

Petaluma, monthly averages in December

Min TemperatureMin Temperature 3°C  
Max TemperatureMax Temperature 14°C  
Chance of RainChance of Rain 39%  
PrecipitationPrecipitation 135 mm  
Rainy daysRainy days 12 days  
SunshineSunshine 160 hours *  
Percentage SunshinePercentage Sunshine 55% *  
Data from: Healdsburg, the United States of America (46 KM, 28 Miles).

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.

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Legend perfect weather pleasant tolerable unpleasant poor
Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C and 29°C and not too much precipitation (less than 90 mm a month).

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.

Swimming
5/10
Cycling
5/10
Walking
5/10
Camping
3/10
Outdoor sports
9/10

Interested in more climate information?

This site provides you with all the information you need about the climate in Petaluma.

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.