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

Is December a good time to explore Vallejo weather-wise? This guide provides the necessary weather information for your travel plans.

Temperatures

Typically, December in Vallejo includes moderate temperatures and high rainfall. Winter occurs in December. Expect temperatures to climb to 14°C during the day, with nighttime readings dropping to 4°C. December often features the most temperate temperatures compared to other months.

Precipitation

Vallejo in December usually receives high rainfall, averaging around 101 mm for the month. This month sees the most rain, so carrying an umbrella will ensure you stay dry. Historically, approximately 12 days this month are expected to have rain.

Average sunshine

The area enjoys a balanced 160 hours of sunlight, ensuring it's neither too overcast nor too sunny.

If you're looking for dry conditions and comfortable temperatures, December may not be the ideal month to visit Vallejo. April, May, June, July, August, September and October typically offer the best circumstances. While December tends to showcase less optimal conditions.

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

 

Vallejo, monthly averages in December

Min TemperatureMin Temperature 4°C  
Max TemperatureMax Temperature 14°C  
Chance of RainChance of Rain 40%  
PrecipitationPrecipitation 101 mm  
Rainy daysRainy days 12 days  
HumidityHumidity 78% *  
SunshineSunshine 160 hours *  
Percentage SunshinePercentage Sunshine 54% *  
Data from: San Francisco, the United States of America (55 KM, 34 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 Vallejo.

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.