Napa, California 

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Climate in Napa, California

Napa, California gets 27 inches of rain, on average, per year. The US average is 38 inches of rain per year.

Napa averages 0 inches of snow per year. The US average is 28 inches of snow per year.

On average, there are 260 sunny days per year in Napa. The US average is 205 sunny days.

Napa gets some kind of precipitation, on average, 69 days per year. Precipitation is rain, snow, sleet, or hail that falls to the ground. In order for precipitation to be counted you have to get at least .01 inches on the ground to measure.


Weather Highlights

Summer High: the July high is around 82 degrees
Winter Low: the January low is 38
Rain: averages 27 inches of rain a year
Snow: averages 0 inches of snow a year


SPERLING'S COMFORT INDEX
Napa ranks 81/100 for Comfort Index

A higher score indicates a more comfortable year-round climate. The US average for the comfort index is 54. Our index is based on the total number of days annually within the comfort range of 70-80 degrees, and we also applied a penalty for days of excessive humidity.

CLIMATE

Climate Averages
  Napa, CaliforniaUnited States
  27.3 in.38.1 in.
  0.0 in.27.8 in.
  68.6 days106.2 days
  260 days205 days
  82.4°85.8°
  37.7°21.7°
  8154
  5.44.3
  20 ft.2443 ft.

YOU SHOULD KNOW

Many people confuse weather and climate but they are different. Weather is the conditions of the atmosphere over a short period of time, and climate is how the atmosphere is over long periods of time.

Weather is how the atmosphere is behaving and its effects upon life and human activities. Weather can change from minute-to-minute. Most people think of weather in terms of temperature, humidity, precipitation, cloudiness, brightness, visibility, wind, and atmospheric pressure.

Climate is the description of the long-term pattern of weather in a place. Climate can mean the average weather for a particular region and time period taken over 30 years. Climate is the average of weather over time.


August is the hottest month for Napa with an average high temperature of 83.0°, which ranks it as cooler than most places in California. In Napa, there are 7 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Napa are October, May and June.


December has the coldest nighttime temperatures for Napa with an average of 37.4°. This is about average compared to other places in California.


In Napa, there are 24.6 days annually when the high temperature is over 90°, which is cooler than most places in California.


In Napa, there are 21.3 days annually when the nighttime low temperature falls below freezing, which is colder than most places in California.


In Napa, there are 0.0 days annually when the nighttime low temperature falls below zero°, which is about average compared to other places in California.


February is the wettest month in Napa with 5.4 inches of rain, and the driest month is July with 0.0 inches. The wettest season is Spring with 58% of yearly precipitation and 1% occurs in Autumn, which is the driest season. The annual rainfall of 27.3 inches in Napa means that it is wetter than most places in California.


December is the rainiest month in Napa with 12.0 days of rain, and July is the driest month with only 0.1 rainy days. There are 68.6 rainy days annually in Napa, which is rainier than most places in California. The rainiest season is Spring when it rains 50% of the time and the driest is Autumn with only a 2% chance of a rainy day.


There is rarely any recorded snowfall in Napa, ranking it as one of the least snowy places in California.



Any measurable snowfall is a rare occurance in Napa.


CLIMATE MAP
  • Annual Rainfall (US Avg: 36.5")
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    Reviews for Napa    17 Reviews
    Half the price of San Francisco and Silicon Valley - 5/20/2017
    Napa is a very easy place to live, especially for those contemplating retirement. The pace of life is peaceful. The weather is superb -- never miserably cold or hot but... Read More

    Start Your Review of Napa


    Get out while you can - 6/25/2016
    My family has been here since the late 1800's. Some of the earliest settler's. Raised in Napa I would of never thought that this town would turn in to the "arm pit of... Read More

    Too expensive - 4/14/2015
    Born and raised in Napa Valley unfortunatley will be looking to relocate to a different state/Town soon. Napa valley is getting outrageous with rent prices...not to... Read More


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    ZIP CODES IN NAPA, CALIFORNIA
    94558 94559

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