Arroyo Grande, CA Climate


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United States / California / San Luis Obispo-Paso Robles Metro Area / San Luis Obispo County / Arroyo Grande / Zip Codes
Arroyo Grande, CA has a Mediterranean climate with mild and wet winters and warm, dry summers. The average temperature in the summer months is around 70 degrees Fahrenheit, and winters generally stay around 50 to 60 degrees Fahrenheit. Rainfall is fairly evenly distributed throughout the year with an average of about 14 inches annually. Due to its seaside location, Arroyo Grande also experiences foggy conditions in the mornings during the winter months.

Arroyo Grande, California gets 20 inches of rain, on average, per year. The US average is 38 inches of rain per year.

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

On average, there are 286 sunny days per year in Arroyo Grande. The US average is 205 sunny days.

Arroyo Grande gets some kind of precipitation, on average, 50 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 73 degrees
Winter Low: the January low is 43
Rain: averages 20 inches of rain a year
Snow: averages 0 inches of snow a year

Bestplaces Comfort Index

The annual BestPlaces Comfort Index for Arroyo Grande is 8.7 (10=best), which means it is more comfortable than most places in California.

9.6 Summer - 7.9 Winter
August, July and September are the most pleasant months in Arroyo Grande, while January and December are the least comfortable months.

  ClimateArroyo Grande, CaliforniaUnited States
  19.5 in.38.1 in.
  0.0 in.27.8 in.
  49.8 days106.2 days
  286 days205 days
  72.7°85.8°
  42.9°21.7°
  8.77
  5.34.3
  118 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.

September is the hottest month for Arroyo Grande with an average high temperature of 74.2°, which ranks it as one of the coolest places in California. In Arroyo Grande, there are 5 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Arroyo Grande are September, August and July.
In Arroyo Grande, there are 5.7 days annually when the high temperature is over 90°, which is cooler than most places in California.
December has the coldest nighttime temperatures for Arroyo Grande with an average of 42.2°. This is warmer than most places in California.
In Arroyo Grande, there are 3.6 days annually when the nighttime low temperature falls below freezing, which is warmer than most places in California.
In Arroyo Grande, 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 Arroyo Grande 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 July, August and September.
February is the wettest month in Arroyo Grande with 4.1 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 19.5 inches in Arroyo Grande means that it is about average compared to other places in California.
February is the rainiest month in Arroyo Grande with 8.9 days of rain, and July is the driest month with only 0.4 rainy days. There are 49.8 rainy days annually in Arroyo Grande, which is about average compared to other places in California. The rainiest season is Spring when it rains 49% of the time and the driest is Autumn with only a 3% chance of a rainy day.
There is rarely any recorded snowfall in Arroyo Grande, ranking it as one of the least snowy places in California. Any measurable snowfall is a rare occurance in Arroyo Grande.
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Paul · Arroyo Grande, CA
A nice place to live
Over 6 years ago

Arroyo Grande is a nice place to live. However, it is rather expensive for many people. There is a large retirement community living here, and home and rental prices are  More

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Pamela · Arroyo Grande, CA
Hometown, USA
Over 7 years ago

I've lived here for nearly thirty years and love it. Great, easy climate year round. I know what I'm talking about--having lived in San Francisco Bay Area, Nevada,  More

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Kitty · Arroyo Grande, CA
Too Expensive, Boring and Cold
Over 8 years ago

People from here absolutely love it and refuse to admit that it is much too expensive. They hate change. To live in a good school area will cost you dearly. There is  More

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