Best time to go to Napa Valley Average weather of Napa Valley, California

Get the best time to visit Napa Valley in United States from average climate conditions here.

When is the best time to go to Napa Valley?

When is the best time to go to Napa Valley? Here's some information to help you in your decision:

  • The best months for good weather in Napa Valley are March, April, May, June, July, August, September, October and November
  • On average, the warmest months are June, July, August and September
  • Napa Valley has dry periods in July, August and September
  • The coldest months are January and December
  • The rainiest months are January, February and December

For full information about the climate and weather in Napa Valley a specific month, click on the corresponding line below:

January 8°C/16°C
February 9°C/17°C
March 10°C/19°C
April 13°C/21°C
May 16°C/25°C
June 19°C/29°C
July 21°C/32°C
August 20°C/32°C
September 19°C/31°C
October 16°C/26°C
November 10°C/19°C
December 7°C/14°C

Weather and climate in Napa Valley

  • From january to february the climate is just OK. In average, on the morning it is 7°C and it rains about 140mm each month.
  • From march to april the climate is favorable. the thermometer goes up to 21°C°C and you can expect to have 54mm of rainfall/month during this period.
  • Between may and october the climate is very good. The record temperature this month is 37°C and you can expect to have 46mm of rainfall/month during this period.
  • In november the climate is favorable. In average, on the morning it is 9°C and, in november, 6 days of rain are expected.
  • In december the climate is passable, but still OK. By early evening, the temperature averages 13°C and it rains in december about 136mm.

Chart: temperature and rainfall in Napa Valley

The chart below allows you to look at the following seasonal norms for the city of Napa Valley: minimum and maximum temperatures, and the monthly volume of precipitation for each month of the year.

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