Napa Valley weather in July
Are you planning a trip to Napa Valley in July and wondering what kind of weather to expect? This page has all the details you need.
What is the weather like in Napa Valley in July?
Napa Valley is a region in the United States of America. July in Napa Valley generally has temperatures that range from warm to very warm, with almost no precipitation. During July, summer is in full swing.
Based on our climate data spanning from 1990-2020, the average maximum temperature is warm in American Canyon at 27°C to very warm in Calistoga at 32°C. Nighttime temperatures generally drop to 13°C in Calistoga and 13°C in American Canyon. The temperatures cited for both day and night represent usual averages, but it's possible some days could be hotter. It's advisable to dress accordingly to handle the heat.
July is a very dry month with an average rainfall of around 0.1 mm in Napa. Going by our weather data, this month in Napa usually has the least rain, making it the driest month of the year. Meanwhile, Napa enjoys approximately 306 hours of sunshine, offering a mostly sunny climate that adds a pleasant and vibrant feel to the month.
For a closer look at July'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 July
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Popular destinations
What is the weather like in July for the 5 most popular destinations in Napa Valley?
Napa
In July Napa generally has high temperatures with maximum daytime temperatures around 29°C, minimum nighttime temperatures around 13°C and almost no monthly rainfall. So on average the conditions are perfect that month.
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Calistoga
In July Calistoga generally has very high temperatures with maximum daytime temperatures around 32°C, minimum nighttime temperatures around 13°C and almost no monthly rainfall. So on average the conditions are perfect that month.
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St. Helena
In July St. Helena generally has very high temperatures with maximum daytime temperatures around 32°C, minimum nighttime temperatures around 13°C and almost no monthly rainfall. So on average the conditions are perfect that month.
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Yountville
In July Yountville generally has very high temperatures with maximum daytime temperatures around 32°C, minimum nighttime temperatures around 13°C and almost no monthly rainfall. So on average the conditions are perfect that month.
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American Canyon
In July American Canyon generally has high temperatures with maximum daytime temperatures around 27°C, minimum nighttime temperatures around 13°C and almost no monthly rainfall. So on average the conditions are perfect 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 July the best time to visit Napa Valley?
We believe that July is one of the best times to visit Napa Valley with overall perfect weather in Napa.
Generally speaking, April, May, June, July, August, September and October provide perfect weather in Napa. On the other hand, the months of February and December tend to have unpleasant weather conditions.
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 climate conditions. Find out where to go with our weather planner.