August weather forecast
Green Valley, AZ

Weather in August

August, the last month of the summer in Green Valley, is another hot month, with an average temperature fluctuating between 74.3°F (23.5°C) and 92.7°F (33.7°C).

Temperature

In August, the average high-temperature is almost the same as in July - a still tropical 92.7°F (33.7°C). In Green Valley, the average low-temperature is 74.3°F (23.5°C).

Heat index

In August, the average heat index is appraised at a sweltering 95°F (35°C). Take extra precautions, as heat cramps and heat exhaustion are possible. Sustained activity may result in heatstroke.
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', 'apparent temperature', 'real feel', or 'feels like', is a calculated temperature value of how hot it feels when the moisture in the air is factored in. Additional factors like activity, clothing, metabolic differences, and pregnancy affect individual temperature impact. 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.
Perspiration is the human body's physiological response to high temperatures and is an attempt to lower body temperature through evaporation of sweat. With a lot of moisture in the air, the evaporation process is not as effective, and the body does not cool down as efficiently, creating a perception of overheating. If the body can not disperse the excessive heat and body temperature reaches conditions of hyperthermia, above 99.5°F (37.5°C) to 100.9°F (38.3°C), thermal conditions are potentially life-threatening.

Humidity

The average relative humidity in August is 42%.

Rainfall

The months with the most rainfall in Green Valley are July and August, with an average 1.3" (33mm) of precipitation.

Snowfall

February through December are months without snowfall.

Daylight

In Green Valley, the average length of the day in August is 13h and 17min.
On the first day of August, sunrise is at 5:39 am and sunset at 7:20 pm. On the last day of the month, sunrise is at 5:58 am and sunset at 6:49 pm MST.

Sunshine

August has the most sunshine of the year, with an average of 12.2h of sunshine.

UV index

The months with the highest UV index are May through September, with an average maximum UV index of 7. A UV Index estimate of 6 to 7 represents a high health hazard from exposure to the Sun's UV radiation for ordinary individuals.
Note: In August, the average maximum UV index of 7 translate into the following recommendations:
Take precautions and adopt sun safety practices. Protection against sunburn is obliged. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun.
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FAQ

What is the temperature in August in Green Valley?

In Green Valley, in August, the average high-temperature is 92.7°F (33.7°C), and the average low-temperature is 74.3°F (23.5°C). The average heat index (a.k.a. 'real feel', 'feels like'), which takes the relative humidity and factors it into the air temperature reading, in August is appraised at 95°F (35°C).

What is the average humidity in August in Green Valley?

In Green Valley, the average relative humidity in August is 42%.

What is the rainiest month in Green Valley?

The months with the most rainfall are July and August, with an average 1.3" (33mm) of precipitation.

How many days does it rain in August in Green Valley?

In Green Valley, Arizona, during August, the rain falls for 11.4 days and regularly aggregates up to 1.3" (33mm) of precipitation.

When it does not snow in Green Valley?

In Green Valley, snow does not fall in February through December.

How many hours of daylight does Green Valley have in August?

In August, the average day length is 13h and 17min.

When is the sunrise / sunset in August in Green Valley?

On the first day of August in Green Valley, sunrise is at 5:39 am and sunset at 7:20 pm. On the last day of the month, sunrise is at 5:58 am and sunset at 6:49 pm MST.

What month has the most sunshine in Green Valley?

With an average of 12.2h of sunshine, August has the most sunshine of the year in Green Valley.

How many hours of sunshine does Green Valley have in August?

In Green Valley, Arizona, the average sunshine duration in August is 12.2h.

When is the highest UV index in Green Valley?

May through September, with an average maximum UV index of 7, are months with the highest UV index.

What is the UV index reading in August in Green Valley?

The average daily maximum UV index in August in Green Valley is 7. A UV Index of 6 to 7 symbolizes a high health vulnerability from unsafe 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
Green Valley, AZ

Average temperature in August - Green Valley, AZ
  • Average high temperature in August: 92.7°F

The warmest month (with the highest average high temperature) is June (95.5°F).
The month with the lowest average high temperature is December (61.7°F).

  • Average low temperature in August: 74.3°F

The month with the highest average low temperature is July (75.4°F).
The coldest month (with the lowest average low temperature) is December (43°F).

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Average pressure in August
Green Valley, AZ

Average pressure in August - Green Valley, AZ
  • Average pressure in August: 29.88"Hg

The month with the highest atmospheric pressure is January (30.07"Hg).
The month with the lowest atmospheric pressure is June (29.82"Hg).

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Average wind speed in August
Green Valley, AZ

Average wind speed in August - Green Valley, AZ
  • Average wind speed in August: 5.6mph

The windiest months (with the highest average wind speed) are April and May (8.8mph).
The calmest month (with the lowest average wind speed) is August (5.6mph).

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Average humidity in August
Green Valley, AZ

Average humidity in August - Green Valley, AZ
  • Average humidity in August: 42%

The month with the highest relative humidity is December (44%).
The months with the lowest relative humidity are May and June (21%).

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Average rainfall in August
Green Valley, AZ

Average rainfall in August - Green Valley, AZ
  • Average rainfall in August: 1.3"

The wettest months (with the highest rainfall) are July and August (1.3").
The driest months (with the least rainfall) are April and May (0.12").

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Average rainfall days in August
Green Valley, AZ

Average rainfall days in August - Green Valley, AZ
  • Average rainfall days in August: 11.4 days

The month with the highest number of rainy days is July (15 days).
The month with the least rainy days is May (1.4 days).

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Average snowfall in August
Green Valley, AZ

Average snowfall in August - Green Valley, AZ
  • Average snowfall in August: 0"

The month with the highest snowfall is January (0.08").
The months with the least snowfall are February, March, April, May, June, July, August, September, October, November and December (0").

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Average snowfall days in August
Green Valley, AZ

Average snowfall days in August - Green Valley, AZ
  • Average snowfall days in August: 0 days

The months with the highest number of snowfall days are January, September and December (0.1 days).
The months with the least snowfall days are February, March, April, May, June, July, August, October and November (0 days).

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Average daylight in August /
Average sunshine in August
Green Valley, AZ

Average daylight in August / Average sunshine in August - Green Valley, AZ
  • Average daylight in August: 13h and 17min

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 7min).

  • Average sunshine in August: 12h and 12min

The month with the most sunshine is August (Average sunshine: 12h and 12min).
The month with the least sunshine is December (Average sunshine: 7h and 0min).

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Average sunshine days in August
Green Valley, AZ

Average sunshine days in August - Green Valley, AZ
  • Average sunshine days in August: 15 days

The month with the most sunshine days is May (29.3 days).
The month with the least sunshine days is July (12.3 days).

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Average UV index in August
Green Valley, AZ

Average UV index in August - Green Valley, AZ
  • Average UV index in August: 7

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

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Average cloud cover in August
Green Valley, AZ

Average cloud cover in August - Green Valley, AZ
  • Average cloud cover in August: 16

The months with the most cloud cover are July and December (Cloud cover 19).
The months with the least cloud cover are May and June (Cloud cover 7).

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Average visibility in August
Green Valley, AZ

Average visibility in August - Green Valley, 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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