Angwin, CA Climate


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United States / California / Napa Metro Area / Napa County / Angwin / Zip Codes
Angwin, CA has a Mediterranean climate with warm and dry summers and mild, wet winters. The average summer temperature is around 70-80 degrees Fahrenheit during the day and 50-60 degrees Fahrenheit at night. Winters are generally cool with temperatures averaging around 40-50 degrees Fahrenheit during the day and 30-40 degrees Fahrenheit at night. Rainfall is mainly concentrated in winter, with an average of 36 to 60 inches per year. Angwin also gets a little bit of snowfall in the winter months usually at higher elevations. This climate makes for perfect conditions to enjoy outdoor activities all year round!

Angwin, California gets 40 inches of rain, on average, per year. The US average is 38 inches of rain per year.

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

On average, there are 262 sunny days per year in Angwin. The US average is 205 sunny days.

Angwin gets some kind of precipitation, on average, 73 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 88 degrees
Winter Low: the January low is 37
Rain: averages 40 inches of rain a year
Snow: averages 0 inches of snow a year

Bestplaces Comfort Index

The annual BestPlaces Comfort Index for Angwin is 8.1 (10=best), which means it is about average compared to other places in California.

9 Summer - 6.7 Winter
June, September and May are the most pleasant months in Angwin, while January and December are the least comfortable months.

  ClimateAngwin, CaliforniaUnited States
  39.5 in.38.1 in.
  0.2 in.27.8 in.
  73.3 days106.2 days
  262 days205 days
  88.3°85.8°
  36.8°21.7°
  8.17
  5.44.3
  1752 ft.2443 ft.
Climate
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.

July is the hottest month for Angwin with an average high temperature of 88.3°, which ranks it as about average compared to other places in California. In Angwin, there are 4 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Angwin are May, October and June.
In Angwin, there are 41.4 days annually when the high temperature is over 90°, which is about average compared to other places in California.
December has the coldest nighttime temperatures for Angwin with an average of 36.6°. This is colder than most places in California.
In Angwin, there are 32.6 days annually when the nighttime low temperature falls below freezing, which is colder than most places in California.
In Angwin, there are 0.0 days annually when the nighttime low temperature falls below zero°, which is about average compared to other places in California.
Humidity is low in Angwin, and some people might find the dryness to be uncomfortable. Days with noticeable humidity are rare throughout the year. A very dry climate can lead to cracked, itchy skin and dry eyes.
December is the wettest month in Angwin with 7.8 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 39.5 inches in Angwin means that it is wetter than most places in California.
December is the rainiest month in Angwin with 12.0 days of rain, and July is the driest month with only 0.1 rainy days. There are 73.3 rainy days annually in Angwin, which is rainier than most places in California. The rainiest season is Spring when it rains 47% of the time and the driest is Autumn with only a 2% chance of a rainy day.
An annual snowfall of 0.2 inches in Angwin means that it is snowier than most places in California. February is the snowiest month in Angwin with 0.1 inches of snow, and no months of the year have significant snowfall.
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Cassandra · Angwin, CA
Angwin, Little Known but Highly Appreciated
Over 16 years ago

My unincorporated town is in the hills above St. Helena, California, in Napa Valley. We still maintain that rural feel while being minutes from the heart of Napa  More

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