July weather forecast
Sunnyvale, TX

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Weather in July

July, the same as June, in Sunnyvale, Texas, is another tropical summer month, with an average temperature fluctuating between 75.7°F (24.3°C) and 94.6°F (34.8°C).

Temperature

Sunnyvale notes an average high-temperature of a still hot 94.6°F (34.8°C) in July, displaying minor variation from June. During July in Sunnyvale, the average low-temperature is recorded at a moderately hot 75.7°F (24.3°C).

Heat index

The heat index value during July is estimated at a life-threatening hot 114.8°F (46°C). Keep guard: Heat cramps and heat exhaustion are likely. Continued activity increases the risk of heatstroke.
The heat index's values are generally associated with conditions in shade and light breezes. The heat index can potentially augment by 15 Fahrenheit (8 Celsius) degrees due to direct sunlight.
Note: The heat index, also known as 'feels like' or 'apparent temperature', offers an insight into how hot it feels when we factor in moisture content. An individual's perception of weather can be affected by a variety of elements including metabolic differences, being pregnant, and their level of physical exertion. With direct sunlight, be aware that it might enhance the heat sensation, raising the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular importance for children. Youngsters generally face more threats than adults given their lesser ability to sweat. Coupled with their larger skin surface relative to their small bodies and higher heat production due to their activities, they are more endangered.
To combat high temperatures, the human body perspires and relies on sweat evaporation for cooling. When relative humidity is at high levels, the evaporation rate lessens, causing the body to keep more heat than it would in less humid conditions. As the body accumulates more heat than it can release, body temperature goes up, increasing the risk of heat-related health issues.

Humidity

The average relative humidity in July in Sunnyvale is 63%.

Rainfall

In July, in Sunnyvale, the rain falls for 13.1 days. Throughout July, 2.2" (56mm) of precipitation is accumulated. In Sunnyvale, during the entire year, the rain falls for 149.6 days and collects up to 33.35" (847mm) of precipitation.

Snowfall

March through December are months without snowfall.

Daylight

In Sunnyvale, the average length of the day in July is 14h and 4min.
On the first day of July, sunrise is at 6:22 am and sunset at 8:38 pm. On the last day of the month, sunrise is at 6:39 am and sunset at 8:25 pm CDT.

Sunshine

In July, the average sunshine in Sunnyvale is 10.9h.

UV index

June through August, with an average maximum UV index of 7, are months with the highest UV index in Sunnyvale, Texas. A UV Index estimate of 6 to 7 represents a high health vulnerability from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: In July, the maximum UV index of 7 transforms into these recommendations:
Follow precautions and abide by sun safety rules. Deterrence of sunburn is imperative. Avoid exposure to the Sun and try to stay in the shade between 10 a.m. and 4 p.m., when UV radiation is most potent, but be aware that parasols or canopies may not offer full protection. Safeguard your eyes, ears, and face from sun rays with the aid of a wide-brim hat.
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Frequently asked questions

How hot is it in Sunnyvale in July?

The average high-temperature, in July, in Sunnyvale, is 94.6°F (34.8°C), while the average low-temperature is 75.7°F (24.3°C). In July, the average heat index (a.k.a. 'apparent temperature', 'feels like'), which combines air temperature and relative humidity, is estimated at 114.8°F (46°C).

What is the average humidity in July in Sunnyvale?

In Sunnyvale, the average relative humidity in July is 63%.

How much does it rain in Sunnyvale in July?

In July, in Sunnyvale, the rain falls for 13.1 days. Throughout July, 2.2" (56mm) of precipitation is accumulated.

When it does not snow in Sunnyvale?

March through December are months without snowfall in Sunnyvale, Texas.

How many hours of daylight does Sunnyvale have in July?

The average day length in July is 14h and 4min.

When is the sunrise / sunset in July in Sunnyvale?

In July, on the first day of the month, sunrise is at 6:22 am and sunset at 8:38 pm. On the last day of the month, in Sunnyvale, sunrise is at 6:39 am and sunset at 8:25 pm CDT.

How long on average sun shines in July in Sunnyvale?

The average sunshine duration in July in Sunnyvale, Texas, is 10.9h.

When is the highest UV index in Sunnyvale?

June through August, with an average maximum UV index of 7, are months with the highest UV index in Sunnyvale, Texas.

How high is the UV index in July in Sunnyvale?

The average daily maximum UV index in July in Sunnyvale is 7. A UV Index of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV radiation.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in July
Sunnyvale, TX

Average temperature in July - Sunnyvale, TX
  • Average high temperature in July: 94.6°F

The warmest month (with the highest average high temperature) is August (95.5°F).
The month with the lowest average high temperature is January (54.3°F).

  • Average low temperature in July: 75.7°F

The months with the highest average low temperature are July and August (75.7°F).
The coldest month (with the lowest average low temperature) is January (38.8°F).

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Average pressure in July
Sunnyvale, TX

Average pressure in July - Sunnyvale, TX
  • Average pressure in July: 29.95"Hg

The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).

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Average wind speed in July
Sunnyvale, TX

Average wind speed in July - Sunnyvale, TX
  • Average wind speed in July: 7.2mph

The windiest month (with the highest average wind speed) is March (9.8mph).
The calmest month (with the lowest average wind speed) is September (6.6mph).

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Average humidity in July
Sunnyvale, TX

Average humidity in July - Sunnyvale, TX
  • Average humidity in July: 63%

The month with the highest relative humidity is May (75%).
The month with the lowest relative humidity is August (58%).

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Average rainfall in July
Sunnyvale, TX

Average rainfall in July - Sunnyvale, TX
  • Average rainfall in July: 2.2"

The wettest month (with the highest rainfall) is October (4.29").
The driest month (with the least rainfall) is February (1.85").

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Average rainfall days in July
Sunnyvale, TX

Average rainfall days in July - Sunnyvale, TX
  • Average rainfall days in July: 13.1 days

The month with the highest number of rainy days is May (15.4 days).
The month with the least rainy days is January (7.6 days).

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Average snowfall in July
Sunnyvale, TX

Average snowfall in July - Sunnyvale, TX
  • Average snowfall in July: 0"

The month with the highest snowfall is February (0.67").
The months with the least snowfall are March, April, May, June, July, August, September, October, November and December (0").

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Average snowfall days in July
Sunnyvale, TX

Average snowfall days in July - Sunnyvale, TX
  • Average snowfall days in July: 0 days

The month with the highest number of snowfall days is February (1.2 days).
The months with the least snowfall days are April, May, June, July, August, September, October and November (0 days).

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Average daylight in July /
Average sunshine in July
Sunnyvale, TX

Average daylight in July / Average sunshine in July - Sunnyvale, TX
  • Average daylight in July: 14h and 1min

The month with the longest days is June (Average daylight: 14h and 18min).
The month with the shortest days is December (Average daylight: 10h and 0min).

  • Average sunshine in July: 10h and 5min

The month with the most sunshine is August (Average sunshine: 11h and 6min).
The month with the least sunshine is December (Average sunshine: 5h and 30min).

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Average sunshine days in July
Sunnyvale, TX

Average sunshine days in July - Sunnyvale, TX
  • Average sunshine days in July: 16.6 days

The month with the most sunshine days is January (21.8 days).
The month with the least sunshine days is September (13 days).

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Average UV index in July
Sunnyvale, TX

Average UV index in July - Sunnyvale, TX
  • Average UV index in July: 7

The months with the highest UV index are June, July and August (UV index 7).
The months with the lowest UV index are January and December (UV index 3).

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Average cloud cover in July
Sunnyvale, TX

Average cloud cover in July - Sunnyvale, TX
  • Average cloud cover in July: 23

The month with the most cloud cover is February (Cloud cover 42).
The month with the least cloud cover is August (Cloud cover 20).

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Average visibility in July
Sunnyvale, TX

Average visibility in July - Sunnyvale, TX
  • Average visibility in July: 6mi

The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).

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Sunnyvale, Texas, USA

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