San Joaquin County, CA Climate

The climate in San Joaquin, CA County is characterized by hot, dry summers and cool, wet winters. Average temperatures range from 45 to 95 degrees Fahrenheit throughout the year. During the summer months, temperatures can reach as high as 105 degrees Fahrenheit, while winter nights can dip below freezing. The region receives an average of 12 inches of precipitation annually, with most of it occurring during the winter months. Despite its moderate climate, San Joaquin experiences occasional cold snaps and heat waves that can bring extreme weather conditions to the area.

San Joaquin County, California gets 16 inches of rain, on average, per year. The US average is 38 inches of rain per year.

San Joaquin County averages 0 inches of snow per year. The US average is 28 inches of snow per year.

On average, there are 261 sunny days per year in San Joaquin County. The US average is 205 sunny days.

San Joaquin County gets some kind of precipitation, on average, 59 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 93 degrees
Winter Low: the January low is 38
Rain: averages 16 inches of rain a year
Snow: averages 0 inches of snow a year

Bestplaces Comfort Index

The annual BestPlaces Comfort Index for San Joaquin County is 8.2 (10=best), which means it is about average compared to other places in California.

8.3 Summer - 7.3 Winter

May, October and April are the most pleasant months in San Joaquin County, while January and December are the least comfortable months.

Climate	San Joaquin, California	United States
	16.3 in.	38.1 in.
	0.0 in.	27.8 in.
	59.1 days	106.2 days
	261 days	205 days
	93.0°	85.8°
	38.0°	21.7°
	8.2	7
	5	4.3
	161 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 San Joaquin County with an average high temperature of 93.0°, which ranks it as warmer than most places in California. In San Joaquin County, there are 3 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for San Joaquin County are October, May and April.

In San Joaquin County, there are 74.1 days annually when the high temperature is over 90°, which is hotter than most places in California.

December has the coldest nighttime temperatures for San Joaquin County with an average of 37.6°. This is about average compared to other places in California.

In San Joaquin County, there are 17.2 days annually when the nighttime low temperature falls below freezing, which is about average compared to other places in California.

In San Joaquin 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 San Joaquin 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 July, August and September.

January is the wettest month in San Joaquin County with 3.1 inches of rain, and the driest month is July with 0.0 inches. The wettest season is Spring with 53% of yearly precipitation and 1% occurs in Autumn, which is the driest season. The annual rainfall of 16.3 inches in San Joaquin County means that it is about average compared to other places in California.

January is the rainiest month in San Joaquin County with 10.5 days of rain, and July is the driest month with only 0.1 rainy days. There are 59.1 rainy days annually in San Joaquin County, which is about average compared to other 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 San Joaquin County, ranking it as one of the least snowy places in California. Any measurable snowfall is a rare occurance in San Joaquin County.

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