Zip 94578 (San Leandro, CA) Climate

San Leandro, CA has a mild climate with warm summers and mild winters. The average temperature in the summer is around 68 degrees Fahrenheit while the winter temperatures rarely dip below 42 degrees. Rainfall occurs mainly from November to April, with an average of 22 inches of precipitation per year. Snow is very rare but can occur occasionally during the winter months. Generally, San Leandro has sunny skies with temperatures that remain comfortable throughout the year.

San Leandro (zip 94578), California gets 22 inches of rain, on average, per year. The US average is 38 inches of rain per year.

San Leandro (zip 94578) 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 San Leandro (zip 94578). The US average is 205 sunny days.

San Leandro (zip 94578) gets some kind of precipitation, on average, 67 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 72 degrees
Winter Low: the January low is 43
Rain: averages 22 inches of rain a year
Snow: averages 0 inches of snow a year

Bestplaces Comfort Index

The annual BestPlaces Comfort Index for the 94578 zip code is 8.7 (10=best), which means it is more comfortable than most places in California.

9.7 Summer - 7.5 Winter

August, September and July are the most pleasant months in the 94578 zip code, while January and December are the least comfortable months.

Climate	San Leandro, California	United States
	21.7 in.	38.1 in.
	0.0 in.	27.8 in.
	66.7 days	106.2 days
	260 days	205 days
	71.8°	85.8°
	42.8°	21.7°
	8.7	7
	5.4	4.3
	174 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 the 94578 zip code with an average high temperature of 74.8°, which ranks it as one of the coolest places in California. In the 94578 zip code, there are 5 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for the 94578 zip code are September, August and July.

In the 94578 zip code, there are 4.4 days annually when the high temperature is over 90°, which is one of the coolest places in California.

January has the coldest nighttime temperatures for the 94578 zip code with an average of 42.8°. This is warmer than most places in California.

In the 94578 zip code, there are 1.4 days annually when the nighttime low temperature falls below freezing, which is warmer than most places in California.

In the 94578 zip code, 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 the 94578 zip code 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.

February is the wettest month in the 94578 zip code with 4.1 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 21.7 inches in the 94578 zip code means that it is wetter than most places in California.

December is the rainiest month in the 94578 zip code with 11.5 days of rain, and July is the driest month with only 0.2 rainy days. There are 66.7 rainy days annually in the 94578 zip code, 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.

There is rarely any recorded snowfall in the 94578 zip code, ranking it as one of the least snowy places in California. Any measurable snowfall is a rare occurance in the 94578 zip code.

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