Marin County, CA Climate

Marin County, California has a Mediterranean climate, with mild and wet winters and hot, dry summers. The temperatures in the area rarely get above 85 degrees or below 50 degrees Fahrenheit, making it a popular destination for those seeking relief from extreme temperatures. Due to its location along the coast of the San Francisco Bay, Marin County is also exposed to frequent fog throughout the year. The weather in Marin County is generally mild and sunny throughout most of the year, making it an ideal place for outdoor activities like hiking and biking.

Marin County, California gets 39 inches of rain, on average, per year. The US average is 38 inches of rain per year.

Marin County 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 Marin County. The US average is 205 sunny days.

Marin County gets some kind of precipitation, on average, 76 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 78 degrees
Winter Low: the January low is 42
Rain: averages 39 inches of rain a year
Snow: averages 0 inches of snow a year

Bestplaces Comfort Index

The annual BestPlaces Comfort Index for Marin County is 8.4 (10=best), which means it is more comfortable than most places in California.

9.5 Summer - 7.1 Winter

July, September and August are the most pleasant months in Marin County, while January and December are the least comfortable months.

Climate	Marin, California	United States
	39.2 in.	38.1 in.
	0.0 in.	27.8 in.
	76.4 days	106.2 days
	260 days	205 days
	78.3°	85.8°
	41.7°	21.7°
	8.4	7
	5.2	4.3
	428 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.

August is the hottest month for Marin County with an average high temperature of 78.5°, which ranks it as cooler than most places in California. In Marin County, there are 6 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Marin County are September, July and August.

In Marin County, there are 14.3 days annually when the high temperature is over 90°, which is cooler than most places in California.

December has the coldest nighttime temperatures for Marin County with an average of 41.6°. This is warmer than most places in California.

In Marin County, there are 4.7 days annually when the nighttime low temperature falls below freezing, which is warmer than most places in California.

In Marin County, 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 Marin County 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.

December is the wettest month in Marin County with 8.0 inches of rain, and the driest month is July with 0.0 inches. The wettest season is Spring with 58% of yearly precipitation and 1% occurs in Autumn, which is the driest season. The annual rainfall of 39.2 inches in Marin County means that it is wetter than most places in California.

January is the rainiest month in Marin County with 12.7 days of rain, and July is the driest month with only 0.7 rainy days. There are 76.4 rainy days annually in Marin County, which is rainier than most places in California. The rainiest season is Spring when it rains 48% of the time and the driest is Autumn with only a 4% chance of a rainy day.

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

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Jessika · Fairfax, CA

Beautiful Scenery and Great Climate

Over 7 years ago

Marin County has been my home for the last fifteen years, with a few years before that, between San Francisco and Berkeley. I moved here for the weather and the hiking. More

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