San Tan Valley, AZ Climate


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United States / Arizona / Phoenix-Mesa-Chandler Metro Area / Pinal County / San Tan Valley / Zip Codes
San Tan Valley, AZ has a desert climate which is characterized by hot and dry summers with mild winters. During the summer months, temperatures can average between 97-102°F during the day and cool to 66-72°F at night. Winters in San Tan Valley are usually mild with daytime temperatures ranging from 63-68°F and nighttime temperatures falling to 34-41°F. The area receives very little rainfall, averaging less than 9 inches annually.

San Tan Valley, Arizona gets 10 inches of rain, on average, per year. The US average is 38 inches of rain per year.

San Tan Valley averages 0 inches of snow per year. The US average is 28 inches of snow per year.

On average, there are 292 sunny days per year in San Tan Valley. The US average is 205 sunny days.

San Tan Valley gets some kind of precipitation, on average, 32 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 105 degrees
Winter Low: the January low is 39
Rain: averages 10 inches of rain a year
Snow: averages 0 inches of snow a year

Bestplaces Comfort Index

The annual BestPlaces Comfort Index for San Tan Valley is 7.3 (10=best), which means it is less comfortable than most places in Arizona.

4.5 Summer - 8.5 Winter
April, March and November are the most pleasant months in San Tan Valley, while July and August are the least comfortable months.

  ClimateSan Tan Valley, ArizonaUnited States
  9.9 in.38.1 in.
  0.0 in.27.8 in.
  32.2 days106.2 days
  292 days205 days
  105.0°85.8°
  39.4°21.7°
  7.37
  6.24.3
  1516 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 Tan Valley with an average high temperature of 105.0°, which ranks it as warmer than most places in Arizona. In San Tan Valley, there are 3 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for San Tan Valley are March, November and April.
In San Tan Valley, there are 165.5 days annually when the high temperature is over 90°, which is hotter than most places in Arizona.
December has the coldest nighttime temperatures for San Tan Valley with an average of 38.3°. This is warmer than most places in Arizona.
In San Tan Valley, there are 14.2 days annually when the nighttime low temperature falls below freezing, which is warmer than most places in Arizona.
In San Tan Valley, there are 0.0 days annually when the nighttime low temperature falls below zero°, which is about average compared to other places in Arizona.
Humidity in San Tan Valley 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.
August is the wettest month in San Tan Valley with 1.5 inches of rain, and the driest month is June with 0.0 inches. The wettest season is Spring with 35% of yearly precipitation and 18% occurs in Summer, which is the driest season. The annual rainfall of 9.9 inches in San Tan Valley means that it is drier than most places in Arizona.
August is the rainiest month in San Tan Valley with 4.6 days of rain, and June is the driest month with only 0.3 rainy days. There are 32.2 rainy days annually in San Tan Valley, which is less rainy than most places in Arizona. The rainiest season is Spring when it rains 34% of the time and the driest is Summer with only a 18% chance of a rainy day.
There is rarely any recorded snowfall in San Tan Valley, ranking it as one of the least snowy places in Arizona. Any measurable snowfall is a rare occurance in San Tan Valley.
Reviews for San Tan Valley
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Jonathan · San Tan Valley, AZ
I really enjoy it here!
Over 5 years ago

I’ve lived here for nearly two years now. I find it to be a great place to live with a few drawbacks. 1.) There is no highway access and results in messy traffic  More

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gern · San Tan Valley, AZ
Prison would be nicer
Over 7 years ago

This place is AWFUL what a mistake we made! Schools are crap & constantly begging for supplies, traffic gets worse by the day as they continue to throw up subdivisions,  More

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