Thornton, CA Climate


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United States / California / Stockton Metro Area / San Joaquin County / Thornton / Zip Codes
Thornton, CA has a Mediterranean climate with hot and dry summers and mild and wet winters. The average high temperature in July is 89°F (32°C), with the average low being 56°F (13°C). Average annual precipitation is approximately 12.3 inches (31 cm). During the summer months, it can be quite hot during the day and cool off significantly at night. Winters in Thornton are mild with some rain, but snowfall is rare.

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

Thornton 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 Thornton. The US average is 205 sunny days.

Thornton gets some kind of precipitation, on average, 61 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 19 inches of rain a year
Snow: averages 0 inches of snow a year

Bestplaces Comfort Index

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

8.3 Summer - 7.2 Winter
May, October and June are the most pleasant months in Thornton, while January and December are the least comfortable months.

  ClimateThornton, CaliforniaUnited States
  19.3 in.38.1 in.
  0.0 in.27.8 in.
  61.1 days106.2 days
  261 days205 days
  92.5°85.8°
  38.4°21.7°
  8.27
  54.3
  13 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 Thornton with an average high temperature of 92.5°, which ranks it as about average compared to other places in California. In Thornton, there are 3 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Thornton are October, May and April.
In Thornton, there are 71.7 days annually when the high temperature is over 90°, which is hotter than most places in California.
December has the coldest nighttime temperatures for Thornton with an average of 37.8°. This is about average compared to other places in California.
In Thornton, there are 16.4 days annually when the nighttime low temperature falls below freezing, which is about average compared to other places in California.
In Thornton, 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 Thornton 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 Thornton with 3.6 inches of rain, and the driest month is July with 0.0 inches. The wettest season is Spring with 52% of yearly precipitation and 1% occurs in Autumn, which is the driest season. The annual rainfall of 19.3 inches in Thornton means that it is about average compared to other places in California.
January is the rainiest month in Thornton with 10.2 days of rain, and July is the driest month with only 0.1 rainy days. There are 61.1 rainy days annually in Thornton, which is about average compared to other places in California. The rainiest season is Spring when it rains 49% of the time and the driest is Autumn with only a 3% chance of a rainy day.
There is rarely any recorded snowfall in Thornton, ranking it as one of the least snowy places in California. Any measurable snowfall is a rare occurance in Thornton.
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