Climate in Pleasanton, CA

Pleasanton, CA enjoys a Mediterranean climate with warm, dry summers and mild, wet winters. The average temperature in summer is about 25°C (77°F), while the average temperature in winter is 13°C (55°F). Rainfall is spread out evenly throughout the year, with an average of 20 inches per year. Pleasanton also experiences very little snowfall each year, usually just a few light dustings. The air quality in the area is excellent due to prevailing winds from the Pacific Ocean that help keep air pollution away from populated areas.

Pleasanton, California gets 19 inches of rain, on average, per year. The US average is 38 inches of rain per year.

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

On average, there are 264 sunny days per year in Pleasanton. The US average is 205 sunny days.

Pleasanton gets some kind of precipitation, on average, 64 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.

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Weather Highlights

Summer High: the July high is around 85 degrees
Winter Low: the January low is 39
Rain: averages 19 inches of rain a year
Snow: averages 0 inches of snow a year

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BESTPLACES COMFORT INDEX

The annual BestPlaces Comfort Index for Pleasanton is 8.6 (10=best), which means it is more comfortable than most places in California.

June, September and August are the most pleasant months in Pleasanton, while January and December are the least comfortable months.

August is the hottest month for Pleasanton with an average high temperature of 85.4°, which ranks it as cooler than most places in California. In Pleasanton, there are 4 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Pleasanton are June, October and May.

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In Pleasanton, there are 36.0 days annually when the high temperature is over 90°, which is cooler than most places in California.

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January has the coldest nighttime temperatures for Pleasanton with an average of 39.3°. This is warmer than most places in California.

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In Pleasanton, there are 11.3 days annually when the nighttime low temperature falls below freezing, which is warmer than most places in California.

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In Pleasanton, there are 0.0 days annually when the nighttime low temperature falls below zero°, which is about average compared to other places in California.

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Humidity in Pleasanton 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 June.

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February is the wettest month in Pleasanton with 3.5 inches of rain, and the driest month is July with 0.0 inches. The wettest season is Spring with 55% of yearly precipitation and 1% occurs in Autumn, which is the driest season. The annual rainfall of 18.7 inches in Pleasanton means that it is about average compared to other places in California.

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December is the rainiest month in Pleasanton with 11.0 days of rain, and July is the driest month with only 0.2 rainy days. There are 64.0 rainy days annually in Pleasanton, which is rainier than most places in California. The rainiest season is Spring when it rains 50% of the time and the driest is Autumn with only a 2% chance of a rainy day.

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

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