Acton, CA Climate

Acton, CA has a dry-summer Mediterranean climate, with hot summers and mild winters. Summers are typically sunny and dry, with temperatures reaching into the upper 80s to mid-90s Fahrenheit during the day. Winters are fairly mild, with temperatures rarely dropping below freezing. Rainfall is minimal during the summer months but increases significantly in winter months. This climate is ideal for growing olives, oranges and other citrus fruits in the area.

Acton, California gets 9 inches of rain, on average, per year. The US average is 38 inches of rain per year.

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

On average, there are 285 sunny days per year in Acton. The US average is 205 sunny days.

Acton gets some kind of precipitation, on average, 30 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 97 degrees
Winter Low: the January low is 34
Rain: averages 9 inches of rain a year
Snow: averages 0 inches of snow a year

Bestplaces Comfort Index

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

7.3 Summer - 7.6 Winter

May, October and April are the most pleasant months in Acton, while July and August are the least comfortable months.

Climate	Acton, California	United States
	9.3 in.	38.1 in.
	0.0 in.	27.8 in.
	30.1 days	106.2 days
	285 days	205 days
	97.3°	85.8°
	34.2°	21.7°
	8.1	7
	6.2	4.3
	2710 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 Acton with an average high temperature of 97.3°, which ranks it as warmer than most places in California. In Acton, there are 3 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Acton are October, April and May.

In Acton, there are 104.9 days annually when the high temperature is over 90°, which is hotter than most places in California.

December has the coldest nighttime temperatures for Acton with an average of 33.7°. This is colder than most places in California.

In Acton, there are 38.5 days annually when the nighttime low temperature falls below freezing, which is colder than most places in California.

In Acton, 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 Acton, 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.

February is the wettest month in Acton with 2.0 inches of rain, and the driest month is July with 0.0 inches. The wettest season is Spring with 58% of yearly precipitation and 2% occurs in Autumn, which is the driest season. The annual rainfall of 9.3 inches in Acton means that it is drier than most places in California.

January is the rainiest month in Acton with 5.4 days of rain, and June is the driest month with only 0.3 rainy days. There are 30.1 rainy days annually in Acton, which is one of the least rainy places in California. The rainiest season is Spring when it rains 49% of the time and the driest is Autumn with only a 4% chance of a rainy day.

There is rarely any recorded snowfall in Acton, ranking it as one of the least snowy places in California. Any measurable snowfall is a rare occurance in Acton.