August weather forecast
Sun Valley, AZ

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Weather in August

The last month of the summer, August, is another hot month in Sun Valley, Arizona, with an average temperature varying between 69.3°F (20.7°C) and 88.3°F (31.3°C).

Temperature

Sun Valley's average high-temperature in August is a still hot 88.3°F (31.3°C), marking an insignificant difference from the 90.1°F (32.3°C) of July. Sun Valley records a mean low-temperature of 69.3°F (20.7°C) in August.

Humidity

In August, the average relative humidity in Sun Valley, Arizona, is 33%.

Rainfall

In Sun Valley, in August, it is raining for 10.6 days, with typically 0.91" (23mm) of accumulated precipitation. In Sun Valley, Arizona, during the entire year, the rain falls for 74.3 days and collects up to 7.2" (183mm) of precipitation.

Snowfall

May through October are months without snowfall in Sun Valley, Arizona.

Daylight

The average length of the day in August in Sun Valley is 13h and 26min.
On the first day of August, sunrise is at 5:30 am and sunset at 7:22 pm. On the last day of the month, sunrise is at 5:52 am and sunset at 6:47 pm MST.

Sunshine

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

UV index

June through August, with an average maximum UV index of 7, are months with the highest UV index. A UV Index reading of 6 to 7 represents a high threat to health from unprotected exposure to Sun's UV rays for the average person.
Note: The daily maximum UV index of 7 in August interprets into the following advice:
Dodge overexposure. Fair-skinned people can get singed in less than 20 minutes. Between 10 a.m. and 4 p.m., UV radiation is strongest. Make an effort to avoid direct sunlight during this time, remembering that shade structures may not provide full sun protection. In the presence of strong sunlight, it's crucial to wear sunglasses that ward off UVA and UVB rays.
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Frequently asked questions

How hot is August in Sun Valley?

In Sun Valley, in August, the average high-temperature is 88.3°F (31.3°C), and the average low-temperature is 69.3°F (20.7°C).

What is the average humidity in August in Sun Valley?

In August, the average relative humidity is 33%.

How much does it rain in Sun Valley in August?

In Sun Valley, Arizona, in August, it is raining for 10.6 days, with typically 0.91" (23mm) of accumulated precipitation.

When it does not snow in Sun Valley?

May through October are months without snowfall in Sun Valley, Arizona.

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

In Sun Valley, the average day length in August is 13h and 26min.

What time are sunrise and sunset in August in Sun Valley?

In August, on the first day of the month, sunrise is at 5:30 am and sunset at 7:22 pm. On the last day of the month, in Sun Valley, sunrise is at 5:52 am and sunset at 6:47 pm MST.

What month has the most sunshine in Sun Valley?

The month with the most sunshine in Sun Valley, Arizona, is August, with an average of 12.2h of sunshine.

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

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

When is the highest UV index in Sun Valley?

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

What is the UV index intensity in August in Sun Valley?

In Sun Valley, Arizona, the average daily maximum UV index in August is 7. A UV Index reading of 6 to 7 represents a high health risk 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 August
Sun Valley, AZ

Average temperature in August - Sun Valley, AZ
  • Average high temperature in August: 88.3°F

The warmest month (with the highest average high temperature) is July (90.1°F).
The month with the lowest average high temperature is January (46.8°F).

  • Average low temperature in August: 69.3°F

The month with the highest average low temperature is July (70.5°F).
The coldest month (with the lowest average low temperature) is January (29.8°F).

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Average pressure in August
Sun Valley, AZ

Average pressure in August - Sun Valley, AZ
  • Average pressure in August: 29.96"Hg

The month with the highest atmospheric pressure is January (30.16"Hg).
The months with the lowest atmospheric pressure are May and June (29.88"Hg).

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Average wind speed in August
Sun Valley, AZ

Average wind speed in August - Sun Valley, AZ
  • Average wind speed in August: 7.6mph

The windiest months (with the highest average wind speed) are April and May (10.6mph).
The calmest month (with the lowest average wind speed) is January (6.1mph).

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Average humidity in August
Sun Valley, AZ

Average humidity in August - Sun Valley, AZ
  • Average humidity in August: 33%

The month with the highest relative humidity is January (59%).
The month with the lowest relative humidity is June (18%).

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Average rainfall in August
Sun Valley, AZ

Average rainfall in August - Sun Valley, AZ
  • Average rainfall in August: 0.91"

The wettest month (with the highest rainfall) is July (1.1").
The driest month (with the least rainfall) is June (0.16").

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Average rainfall days in August
Sun Valley, AZ

Average rainfall days in August - Sun Valley, AZ
  • Average rainfall days in August: 10.6 days

The month with the highest number of rainy days is July (13.3 days).
The months with the least rainy days are June and November (3.4 days).

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Average snowfall in August
Sun Valley, AZ

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

The month with the highest snowfall is February (2.17").
The months with the least snowfall are May, June, July, August, September and October (0").

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Average snowfall days in August
Sun Valley, AZ

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

The month with the highest number of snowfall days is December (3.1 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

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

Average daylight in August / Average sunshine in August - Sun Valley, AZ
  • Average daylight in August: 13h and 2min

The month with the longest days is June (Average daylight: 14h and 30min).
The month with the shortest days is December (Average daylight: 9h and 54min).

  • Average sunshine in August: 12h and 1min

The month with the most sunshine is August (Average sunshine: 12h and 12min).
The month with the least sunshine is December (Average sunshine: 6h and 48min).

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Average sunshine days in August
Sun Valley, AZ

Average sunshine days in August - Sun Valley, AZ
  • Average sunshine days in August: 16.6 days

The months with the most sunshine days are May, June and November (25.3 days).
The month with the least sunshine days is July (12.8 days).

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Average UV index in August
Sun Valley, AZ

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

The months with the highest UV index are June, July and August (UV index 7).
The month with the lowest UV index is December (UV index 2).

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Average cloud cover in August
Sun Valley, AZ

Average cloud cover in August - Sun Valley, AZ
  • Average cloud cover in August: 14

The month with the most cloud cover is December (Cloud cover 23).
The month with the least cloud cover is June (Cloud cover 9).

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Average visibility in August
Sun Valley, AZ

Average visibility in August - Sun 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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Sun Valley, Arizona, USA

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