Sunnyvale, TX Climate

Sunnyvale, TX has a humid subtropical climate with hot summers and mild winters. The average summer temperature in Sunnyvale is around 87°F (30°C) with humidity levels reaching as high as 85%. During the winter months, the average temperature drops to around 56°F (13°C). Rainfall in Sunnyvale is spread out evenly throughout the year, averaging about 37 inches per year. Sunnyvale experiences all four seasons throughout the year, with spring bringing warm temperatures and blooming flowers and fall bringing cooler temperatures and colorful foliage.

Sunnyvale, Texas gets 40 inches of rain, on average, per year. The US average is 38 inches of rain per year.

Sunnyvale averages 1 inches of snow per year. The US average is 28 inches of snow per year.

On average, there are 230 sunny days per year in Sunnyvale. The US average is 205 sunny days.

Sunnyvale gets some kind of precipitation, on average, 75 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 95 degrees
Winter Low: the January low is 35
Rain: averages 40 inches of rain a year
Snow: averages 1 inches of snow a year

Bestplaces Comfort Index

The annual BestPlaces Comfort Index for Sunnyvale is 7.1 (10=best), which means it is about average compared to other places in Texas.

3.9 Summer - 7.5 Winter

October, April and May are the most pleasant months in Sunnyvale, while July and August are the least comfortable months.

Climate	Sunnyvale, Texas	United States
	Unlock	38.1 in.
	0.6 in.	Unlock
	Unlock	106.2 days
	230 days	Unlock
	95.0°	85.8°
	Unlock	21.7°
	7.1	Unlock
	Unlock	4.3
	486 ft.	Unlock

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.

August is the hottest month for Sunnyvale with an average high temperature of 95.8°, which ranks it as warmer than most places in Texas. In Sunnyvale, there are 3 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Sunnyvale are October, April and May.

In Sunnyvale, there are 90.1 days annually when the high temperature is over 90°, which is about average compared to other places in Texas.

January has the coldest nighttime temperatures for Sunnyvale with an average of 35.4°. This is about average compared to other places in Texas.

In Sunnyvale, there are 30.5 days annually when the nighttime low temperature falls below freezing, which is about average compared to other places in Texas.

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

Humidity in Sunnyvale can be uncomfortable during the summer, but comfortable for most of the year. The most uncomfortably humid months are July, June and August. The humid season runs from May-September and the most comfortable months are October-April.

May is the wettest month in Sunnyvale with 5.2 inches of rain, and the driest month is August with 1.9 inches. The wettest season is Summer with 30% of yearly precipitation and 21% occurs in Autumn, which is the driest season. The annual rainfall of 40.3 inches in Sunnyvale means that it is wetter than most places in Texas.

May is the rainiest month in Sunnyvale with 8.3 days of rain, and July is the driest month with only 4.0 rainy days. There are 74.5 rainy days annually in Sunnyvale, which is about average compared to other places in Texas. The rainiest season is Summer when it rains 29% of the time and the driest is Autumn with only a 20% chance of a rainy day.

An annual snowfall of 0.6 inches in Sunnyvale means that it is snowier than most places in Texas. December is the snowiest month in Sunnyvale with 0.2 inches of snow, and no months of the year have significant snowfall.

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