July weather forecast
Sierra Vista, AZ

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The vast Sierra Vista region of Arizona
The vast Sierra Vista region of Arizona

Weather in July

July perpetuates the trend of high temperatures in Sierra Vista, although with an interesting twist. While the city remains hot during the day, rainfall frequency significantly ramps up. Hitting an average rainfall of 4.53" (115mm), a stark contrast to previous months, July is considered the wettest month of the year. This sudden surge in downpours provides opportunities for witnessing magnificent desert showers and rainbows, a unique experience for visitors to the city.

Temperature

With the onset of July, the average high-temperature in Sierra Vista stands at a still hot 86.5°F (30.3°C), closely aligned with June's 90.1°F (32.3°C). During July nights, Sierra Vista witnesses a consistent average temperature of 69.6°F (20.9°C).

Heat index

The heat index value during July is calculated to be a tropical 87.8°F (31°C). Prolonged exposure combined with continuous activity could lead to exhaustion, and possibly heat cramps.
Factoring in the heat index, values are geared towards shaded areas with light breezes. If exposed to direct sunlight, the heat index could climb by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'real feel', offers an insight into how hot it feels when we factor in moisture content. Elements such as metabolic variations, pregnancy, and physical exertion can shape one's weather perception. Direct sun rays have a notable impact on perceived temperature, which can raise the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for children. Typically, young kids are at a higher risk than adults since they sweat less. Also, the larger skin surface in proportion to their small bodies and the heightened heat production due to their active nature adds to their vulnerability.

Humidity

The average relative humidity in July in Sierra Vista is 47%.

Rainfall

July is the month with the most rainfall in Sierra Vista, Arizona. Rain falls for 21.3 days and accumulates 4.53" (115mm) of precipitation.

Snowfall

April through November are months without snowfall.

Daylight

In July, the average length of the day is 13h and 58min.
On the first day of July, sunrise is at 5:20 am and sunset at 7:30 pm. On the last day of the month, sunrise is at 5:37 am and sunset at 7:17 pm MST.

Sunshine

The average sunshine in July in Sierra Vista, Arizona, is 11.7h.

UV index

In July, the average daily maximum UV index in Sierra Vista, Arizona, is 6. A UV Index value of 6 to 7 symbolizes a high health risk from exposure to the Sun's UV radiation for average individuals.
Note: An average maximum UV index of 6 in July leads to these recommendations:
Continue precautions and advocate sun safety advice. Deterrence of sunburn is indispensable. Try to minimize direct Sun exposure between 10 a.m. and 4 p.m., the peak period for UV radiation. Also note that objects like parasols or canopies might not provide complete sun protection. Sun-related eye harm can be minimized with proper sunglasses offering UVA and UVB coverage.
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Frequently asked questions

How hot is it in Sierra Vista in July?

During July, Sierra Vista experiences an average high-temperature of 86.5°F (30.3°C) and a low-temperature of 69.6°F (20.9°C). In July, the average heat index (a.k.a. 'apparent temperature', 'felt air temperature'), which takes the relative humidity and factors it into the air temperature reading, is calculated to be 87.8°F (31°C).

What is the average humidity in July in Sierra Vista?

The average relative humidity in July is 47%.

What is the rainiest month in Sierra Vista?

The month with the most rainfall is July, when the rain falls for 21.3 days and typically aggregates up to 4.53" (115mm) of precipitation.

How much does it rain in Sierra Vista in July?

In Sierra Vista, during July, the rain falls for 21.3 days and regularly aggregates up to 4.53" (115mm) of precipitation.

When it does not snow in Sierra Vista?

April through November are months without snowfall in Sierra Vista, Arizona.

How many hours of daylight does Sierra Vista have in July?

In July, the average day length in Sierra Vista, Arizona, is 13h and 58min.

When are sunrise and sunset in July in Sierra Vista?

In July, on the first day of the month, sunrise is at 5:20 am and sunset at 7:30 pm. On the last day of the month, in Sierra Vista, Arizona, sunrise is at 5:37 am and sunset at 7:17 pm MST.

How many hours of sunshine does Sierra Vista have in July?

The average sunshine duration in July in Sierra Vista is 11.7h.

How high is the UV index in July in Sierra Vista?

The average daily maximum UV index in July in Sierra Vista, Arizona, is 6. A UV Index estimate of 6 to 7 represents a high hazard to health from exposure to Sun's UV rays.
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
Sierra Vista, AZ

Average temperature in July - Sierra Vista, AZ
  • Average high temperature in July: 86.5°F

The warmest month (with the highest average high temperature) is June (90.1°F).
The month with the lowest average high temperature is December (56.5°F).

  • Average low temperature in July: 69.6°F

The month with the highest average low temperature is July (69.6°F).
The coldest months (with the lowest average low temperature) are January and December (37.8°F).

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Average pressure in July
Sierra Vista, AZ

Average pressure in July - Sierra Vista, AZ
  • Average pressure in July: 29.9"Hg

The month with the highest atmospheric pressure is January (30.07"Hg).
The month with the lowest atmospheric pressure is June (29.84"Hg).

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Average wind speed in July
Sierra Vista, AZ

Average wind speed in July - Sierra Vista, AZ
  • Average wind speed in July: 6.3mph

The windiest month (with the highest average wind speed) is April (9.8mph).
The calmest month (with the lowest average wind speed) is August (5.5mph).

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Average humidity in July
Sierra Vista, AZ

Average humidity in July - Sierra Vista, AZ
  • Average humidity in July: 47%

The month with the highest relative humidity is September (50%).
The months with the lowest relative humidity are May and June (23%).

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Average rainfall in July
Sierra Vista, AZ

Average rainfall in July - Sierra Vista, AZ
  • Average rainfall in July: 4.53"

The wettest month (with the highest rainfall) is July (4.53").
The driest month (with the least rainfall) is May (0.12").

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Average rainfall days in July
Sierra Vista, AZ

Average rainfall days in July - Sierra Vista, AZ
  • Average rainfall days in July: 21.3 days

The month with the highest number of rainy days is July (21.3 days).
The month with the least rainy days is May (2.3 days).

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Average snowfall in July
Sierra Vista, AZ

Average snowfall in July - Sierra Vista, AZ
  • Average snowfall in July: 0"

The month with the highest snowfall is February (1.46").
The months with the least snowfall are April, May, June, July, August, September, October and November (0").

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Average snowfall days in July
Sierra Vista, AZ

Average snowfall days in July - Sierra Vista, AZ
  • Average snowfall days in July: 0 days

The month with the highest number of snowfall days is December (1.3 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).

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Average daylight in July /
Average sunshine in July
Sierra Vista, AZ

Average daylight in July / Average sunshine in July - Sierra Vista, AZ
  • Average daylight in July: 14h and 0min

The month with the longest days is June (Average daylight: 14h and 12min).
The month with the shortest days is December (Average daylight: 10h and 6min).

  • Average sunshine in July: 11h and 4min

The months with the most sunshine are June and August (Average sunshine: 12h and 0min).
The month with the least sunshine is December (Average sunshine: 6h and 54min).

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Average sunshine days in July
Sierra Vista, AZ

Average sunshine days in July - Sierra Vista, AZ
  • Average sunshine days in July: 6.5 days

The month with the most sunshine days is May (28.1 days).
The month with the least sunshine days is July (6.5 days).

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Average UV index in July
Sierra Vista, AZ

Average UV index in July - Sierra Vista, AZ
  • Average UV index in July: 6

The month with the highest UV index is June (UV index 7).
The months with the lowest UV index are January, February, November and December (UV index 3).

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Average cloud cover in July
Sierra Vista, AZ

Average cloud cover in July - Sierra Vista, AZ
  • Average cloud cover in July: 24

The month with the most cloud cover is July (Cloud cover 24).
The month with the least cloud cover is May (Cloud cover 8).

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Average visibility in July
Sierra Vista, AZ

Average visibility in July - Sierra Vista, AZ
  • 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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Sierra Vista, Arizona, USA

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