Napa weather averages

Going to Napa? Find the best month to visit Napa based on the weather.

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Check Napa weather averages before you book your next holiday in 2019/2020. Today's maximum temperature in Napa is expected to be 17°C, while the average maximum temperature in January is 13°C.

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More about Napa

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The weather for Napa, California shows long term weather averages processed from data supplied by CRU (University of East Anglia) & today's weather forecast provided by MeteoBlue. Find out more about our data sources.

Metric (°C / mm)  |  Imperial (°F / inches)

Napa weather averages: best month

Napa Best month Averages
Warmest July & August 28°C
Sunniest June & July 12 hours per day
Least rain June, July & August 1 day

Napa climate guide

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Napa weather averages by month

Check Napa holiday weather averages for a particular month by selecting from the list below. Monthly weather guides include figures for temperature, rainfall, sunshine hours and sea temperature plus daily sunrise & sunset times.

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Compare Napa weather with the USA

Below the Napa weather chart shows maximum daytime temperature for Napa, California, USA and the USA (Washington). For more weather parameters or to change the destinations shown visit the comparison weather tool.

Maximum daytime temperature (°C)

Napa, California, USA
USA (Washington)
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Metric (°C / mm)  |  Imperial (°F / inches)

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Popular California destinations

Below are average maximum temperatures at popular destinations in California in January. Select a destination to see the weather overview and compare average conditions with today's forecast.

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More California destinations

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Can't see your chosen destination? Use our A to Z search to find your required the holiday weather guide:

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