August weather forecast
Sierra Vista, AZ

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

Weather in August

The last month of the summer, August, is another tropical month in Sierra Vista, Arizona, with an average temperature fluctuating between 86.5°F (30.3°C) and 68.2°F (20.1°C).

Temperature

In August, the average high-temperature remains equal as in July - a still hot 86.5°F (30.3°C). In August, in Sierra Vista, Arizona, the average low-temperature is 68.2°F (20.1°C).

Heat index

The average heat index in August is calculated to be a tropical 87.8°F (31°C). Exhaustion is likely with prolonged exposure and activity. Sustaining activity may result in heat cramps.
Note that heat index values are valued for light wind and location in the shade. Exposure to direct sunshine can increase heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature', 'feels like', 'real feel', or 'apparent temperature', is a measure that combines air temperature and relative humidity into a single value that indicates how hot the weather feels. This effect is subjective, depending on the activity and individual's heat perception influenced by various reasons (differences in body mass, height, and shape, pregnancy, wind). Bear in mind that direct sunshine exposure increases weather impact, and may raise heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. Children are often less aware of the need to rest and re-hydrate. Thirst is a late sign of dehydration - it is vital to remain hydrated, particularly during prolonged physical activities.

Humidity

The average relative humidity in August in Sierra Vista is 49%.

Rainfall

In Sierra Vista, Arizona, in August, it is raining for 18.7 days, with typically 4.06" (103mm) of accumulated precipitation. Throughout the year, there are 92.2 rainfall days, and 15.47" (393mm) of precipitation is accumulated.

Snowfall

April through November are months without snowfall.

Daylight

In August, the average length of the day in Sierra Vista is 13h and 16min.
On the first day of August in Sierra Vista, sunrise is at 5:37 am and sunset at 7:17 pm. On the last day of the month, sunrise is at 5:56 am and sunset at 6:46 pm MST.

Sunshine

The months with the most sunshine in Sierra Vista, Arizona, are June and August, with an average of 12h of sunshine.

UV index

In August, the average daily maximum UV index is 6. A UV Index reading of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV rays for the average person.
Note: The average daily UV index of 6 in August transform into the following instructions:
Take precautions against overexposure. Fair-skinned people may get burned in less than 20 minutes. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.
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FAQ

What is the temperature in August in Sierra Vista?

The average high-temperature, in August, in Sierra Vista, is 86.5°F (30.3°C), while the average low-temperature is 68.2°F (20.1°C). in August, the average heat index (a.k.a. 'feels like', 'apparent 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 August in Sierra Vista?

In August, the average relative humidity in Sierra Vista, Arizona, is 49%.

How much does it rain in Sierra Vista in August?

In August, in Sierra Vista, Arizona, the rain falls for 18.7 days. Throughout August, 4.06" (103mm) of precipitation is accumulated.

When it does not snow in Sierra Vista?

April through November are months without snowfall.

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

The average day length in August in Sierra Vista is 13h and 16min.

When is the sunrise / sunset in August in Sierra Vista?

On the first day of August in Sierra Vista, sunrise is at 5:37 am and sunset at 7:17 pm. On the last day of the month, sunrise is at 5:56 am and sunset at 6:46 pm MST.

What is the month with the most sunshine in Sierra Vista?

June and August, with an average of 12h of sunshine, are months with the most sunshine in Sierra Vista, Arizona.

How long on average sun shines in August in Sierra Vista?

In August, the average sunshine duration is 12h.

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

In August, the average daily maximum UV index is 6. A UV Index reading of 6 to 7 represents a high health threat from exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in August
Sierra Vista, AZ

Average temperature in August - Sierra Vista, AZ
  • Average high temperature in August: 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 August: 68.2°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 August
Sierra Vista, AZ

Average pressure in August - Sierra Vista, AZ
  • Average pressure in August: 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 August
Sierra Vista, AZ

Average wind speed in August - Sierra Vista, AZ
  • Average wind speed in August: 5.5mph

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 August
Sierra Vista, AZ

Average humidity in August - Sierra Vista, AZ
  • Average humidity in August: 49%

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 August
Sierra Vista, AZ

Average rainfall in August - Sierra Vista, AZ
  • Average rainfall in August: 4.06"

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 August
Sierra Vista, AZ

Average rainfall days in August - Sierra Vista, AZ
  • Average rainfall days in August: 18.7 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 August
Sierra Vista, AZ

Average snowfall in August - Sierra Vista, AZ
  • Average snowfall in August: 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 August
Sierra Vista, AZ

Average snowfall days in August - Sierra Vista, AZ
  • Average snowfall days in August: 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 August /
Average sunshine in August
Sierra Vista, AZ

Average daylight in August / Average sunshine in August - Sierra Vista, AZ
  • Average daylight in August: 13h and 16min

The month with the longest days is June (Average daylight: 14h and 10min).
The month with the shortest days is December (Average daylight: 10h and 8min).

  • Average sunshine in August: 12h and 0min

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 August
Sierra Vista, AZ

Average sunshine days in August - Sierra Vista, AZ
  • Average sunshine days in August: 7.7 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 August
Sierra Vista, AZ

Average UV index in August - Sierra Vista, AZ
  • Average UV index in August: 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 August
Sierra Vista, AZ

Average cloud cover in August - Sierra Vista, AZ
  • Average cloud cover in August: 19

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 August
Sierra Vista, AZ

Average visibility in August - Sierra Vista, AZ
  • Average visibility in August: 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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