Weather in December in Napa Valley
Planning a journey to Napa Valley this December and curious over the weather conditions to await? Your essential details are found on this page, answering your query:
What is the weather like in Napa Valley in December?
Napa Valley is a region in the United States of America. December in Napa Valley generally has mild temperatures, with precipitation levels ranging from high to heavy. In December, it is winter.
Temperatures
You can expect mild maximum daytime temperatures of around 14°C and nighttime temperatures around 4°C in Napa. In general, this month stands out as the coldest period throughout the year. However, even though December is the coolest month, you can still find places in Napa Valley with moderate temperatures, ensuring a pleasant experience throughout the year.
Precipitation
In December, precipitation varies across different areas. From high rainfall in American Canyon with an average of 101 mm to heavy rainfall in Calistoga with 183 mm. Going by our weather data, it is the wettest month of the year in Napa.Average sunshine
Most cities enjoy a balanced amount of sunshine, with around 160 hours of sunlight anticipated in Napa. This ensures the days are neither too dim nor excessively sunny.For a closer look at December's conditions in Napa Valley, see the map below. For a more detailed look at Napa Valley's yearly weather, check out our Napa Valley climate page.
Where to go in Napa Valley in December
perfect weather
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Popular destinations
What is the weather like in December for the 5 most popular destinations in Napa Valley?
Napa
In December Napa generally has moderate temperatures with maximum daytime temperatures around 14°C, minimum nighttime temperatures around 4°C and high monthly rainfall. So on average the conditions are unpleasant that month.
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Calistoga
In December Calistoga generally has moderate temperatures with maximum daytime temperatures around 14°C, minimum nighttime temperatures around 3°C and heavy monthly rainfall. So on average the conditions are poor that month.
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St. Helena
In December St. Helena generally has moderate temperatures with maximum daytime temperatures around 14°C, minimum nighttime temperatures around 4°C and heavy monthly rainfall. So on average the conditions are unpleasant that month.
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Yountville
In December Yountville generally has moderate temperatures with maximum daytime temperatures around 14°C, minimum nighttime temperatures around 3°C and high monthly rainfall. So on average the conditions are unpleasant that month.
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American Canyon
In December American Canyon generally has moderate temperatures with maximum daytime temperatures around 14°C, minimum nighttime temperatures around 4°C and high monthly rainfall. So on average the conditions are unpleasant that month.
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Is your destination not in the list? Have a look at other destinations in Napa Valley, in the United States of America.
Is December the best time to visit Napa Valley?
In our opinion, December may not be the ideal time to visit Napa Valley due to the typically unpleasant weather in Napa.
On average, the best time to visit Napa Valley is in April, May, June, July, August, September and October with generally perfect weather in Napa. On the other hand, the weather in February and December tend to be unpleasant.
Interested in more climate information?
We have much more information about the climate in Napa Valley.
Interested in the weather conditions in a specific month? Select the month below.
Weather and climate has detailed information for every country in the world. Are you going to the United States of America? Get detailed 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.