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

What kind of weather does December bring to Guerneville? Here’s a detailed forecast of the month’s weather patterns.

Temperatures

In December, Guerneville usually has moderate temperatures and heavy rainfall. The month of December belongs to the winter season. The daytime often sees temperatures reaching 14°C, but nighttime brings a cool-down to 3°C. This month is marked by the mildest temperatures of the year.

Precipitation

Guerneville in December falls under the rainy season with heavy rainfall, averaging around 243 mm for the month. It records the year's peak rainfall, often coming down quite heavily. We recommend bringing a poncho, which will keep you dry. Rain is expected on roughly 13 days.

Average sunshine

The month brings about 160 hours of sunlight, offering a comfortable mix of sun and shade.

If you're looking for dry conditions and comfortable temperatures, December may not be the ideal month to visit Guerneville. April, May, June, July, August, September and October generally stand out with the best circumstances. While February and December tend to showcase less optimal conditions.

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

 

Guerneville, monthly averages in December

Min Temperature 3°C  

Max Temperature 14°C  

Chance of Rain 43%  

Precipitation 243 mm  

Rainy days 13 days  

Sunshine 160 hours *  

Percentage Sunshine 55% *  

Data from: Healdsburg, the United States of America (16 KM, 10 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.

Weather conditions Weather

Temperatures

Precipitation

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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

Interested in more climate information?

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

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.