Brentwood, CA Climate


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United States / California / San Francisco-Oakland-Berkeley Metro Area / Contra Costa County / Brentwood / Zip Codes
Brentwood, CA is known for its pleasant climate. The summers are warm with temperatures rarely exceeding 85°F. The winters are mild and don't usually see temperatures below freezing, making it ideal for outdoor activities year-round. Rainfall averages about 15 inches annually, mostly occurring in the winter months. Autumn and spring are comfortable and sunny. The air quality index is generally good due to the city's location near the ocean, providing a refreshing breeze for residents.

Brentwood, California gets 15 inches of rain, on average, per year. The US average is 38 inches of rain per year.

Brentwood 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 Brentwood. The US average is 205 sunny days.

Brentwood gets some kind of precipitation, on average, 57 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 91 degrees
Winter Low: the January low is 40
Rain: averages 15 inches of rain a year
Snow: averages 0 inches of snow a year

Bestplaces Comfort Index

The annual BestPlaces Comfort Index for Brentwood is 8.5 (10=best), which means it is more comfortable than most places in California.

8.9 Summer - 7.3 Winter
May, October and June are the most pleasant months in Brentwood, while January and December are the least comfortable months.

  ClimateBrentwood, CaliforniaUnited States
  14.5 in.38.1 in.
  0.0 in.27.8 in.
  56.7 days106.2 days
  260 days205 days
  90.8°85.8°
  39.6°21.7°
  8.57
  5.44.3
  79 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 Brentwood with an average high temperature of 90.8°, which ranks it as about average compared to other places in California. In Brentwood, there are 3 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Brentwood are October, May and April.
In Brentwood, there are 56.7 days annually when the high temperature is over 90°, which is about average compared to other places in California.
January has the coldest nighttime temperatures for Brentwood with an average of 39.6°. This is warmer than most places in California.
In Brentwood, there are 7.9 days annually when the nighttime low temperature falls below freezing, which is warmer than most places in California.
In Brentwood, 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 in Brentwood is generally quite low and comfortable. There are few days during the summer when the humidity becomes unpleasant. The most humid months (but still comfortable) are August, July and September.
January is the wettest month in Brentwood with 2.9 inches of rain, and the driest month is July with 0.0 inches. The wettest season is Spring with 57% of yearly precipitation and 1% occurs in Autumn, which is the driest season. The annual rainfall of 14.5 inches in Brentwood means that it is drier than most places in California.
January is the rainiest month in Brentwood with 11.1 days of rain, and July is the driest month with only 0.0 rainy days. There are 56.7 rainy days annually in Brentwood, which is about average compared to other places in California. The rainiest season is Spring when it rains 54% of the time and the driest is Autumn with only a 2% chance of a rainy day.
There is rarely any recorded snowfall in Brentwood, ranking it as one of the least snowy places in California. Any measurable snowfall is a rare occurance in Brentwood.
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Barbara · Brentwood, CA
Beautiful weather near San Francisco
Over 10 years ago

Brentwood, 50 miles east of San Francisco, has a great climate. We are in a valley, east of Mount Diablo. We get a few weeks of pretty hot days - 100+, but the rest of  More

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LN · Brentwood, CA
RE: Brentwood is a jewel
Over 14 years ago

I love living in Brentwood. Our city planners and workers have done an excellent job in creating a beautiful city filled with trees, parks, well- planned communities,  More

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Caroline  · Brentwood, CA
The California Delta & Fresh Produce!
Over 16 years ago

We moved to a new “Active Adults” (over 55) housing development in Brentwood about 6 years ago. The location is great if you like to fish, go pleasure-boating, or water  More

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