August weather forecast
Happy Valley, OR

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Weather in August

The last month of the summer, August, is another warm month in Happy Valley, Oregon, with an average temperature fluctuating between 54.5°F (12.5°C) and 81.7°F (27.6°C).

Temperature

With an average high-temperature of 81.7°F (27.6°C) and an average low-temperature of 54.5°F (12.5°C), August is the warmest month.

Heat index

The heat index for August is evaluated at 84.2°F (29°C). With prolonged exposure and constant activity, one might feel exhausted and experience heat cramps.
It is emphasized that the heat index's values are meant for shaded zones with mild winds. Heat index values have the potential to be boosted by 15 Fahrenheit (8 Celsius) degrees due to direct sunlight.
Note: The heat index, also known as 'feels like' or 'apparent temperature', integrates the air's temperature and its humidity to showcase the felt temperature by people. Additional factors encompassing metabolic differences, the level of physical activity, and clothing can impact the individual's perception of temperature. Given direct exposure to sunlight, one might experience a rise in the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular significance for children. Children regularly disregard the necessity to rest and replenish fluids. Thirst is a late symptom of dehydration - thus, maintaining hydration, particularly during long-lasting physical activities, is essential.

Humidity

August is the least humid month in Happy Valley, with an average relative humidity of 63%.

Rainfall

In August, the rain falls for 5 days. Throughout August, 0.35" (9mm) of precipitation is accumulated. Throughout the year, there are 172.2 rainfall days, and 31.3" (795mm) of precipitation is accumulated.

Snowfall

In Happy Valley, snow does not fall in April through October.

Daylight

The average length of the day in August in Happy Valley is 14h and 3min.
On the first day of the month, sunrise is at 5:55 am and sunset at 8:37 pm. On the last day of August, sunrise is at 6:31 am and sunset at 7:48 pm PDT.

Sunshine

The month with the most sunshine is August, with an average of 11h of sunshine.

UV index

In August, the average daily maximum UV index in Happy Valley is 5. A UV Index estimate of 3 to 5 represents a medium vulnerability from unsafe exposure to UV radiation for the average person.
Note: The maximum daily UV index of 5 in August converts into the following recommendations:
Adopt protective measures - It is advised to guard against sun damage. Midday is the peak time for the Sun's radiation; stay in the shade and protect yourself. Select sunglasses that boast both UVA and UVB protection to limit the adverse effects of the sun on the eyes.
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Frequently asked questions

What month is the hottest in Happy Valley?

The warmest time of the year is August, with temperatures averaging a high of 81.7°F (27.6°C) and a low of 54.5°F (12.5°C).

What is the average August temperature in Happy Valley?

An average high-temperature, in August, in Happy Valley, is 81.7°F (27.6°C) and the average low-temperature is 54.5°F (12.5°C). 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, in August is evaluated at 84.2°F (29°C).

What is the least humid month in Happy Valley?

With an average relative humidity of 63%, August is the least humid month.

What is the average humidity in August in Happy Valley?

In Happy Valley, the average relative humidity in August is 63%.

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

In Happy Valley, Oregon, during August, the rain falls for 5 days and regularly aggregates up to 0.35" (9mm) of precipitation.

When it does not snow in Happy Valley?

In Happy Valley, Oregon, snow does not fall in April through October.

What is the average length of the day in August in Happy Valley?

The average day length in August in Happy Valley, Oregon, is 14h and 3min.

When are sunrise and sunset in August in Happy Valley?

On the first day of August in Happy Valley, Oregon, sunrise is at 5:55 am and sunset at 8:37 pm. On the last day of the month, sunrise is at 6:31 am and sunset at 7:48 pm PDT.

What month has the most sunshine in Happy Valley?

August has the most sunshine of the year in Happy Valley, with an average of 11h of sunshine.

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

In Happy Valley, the average sunshine duration in August is 11h.

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

In Happy Valley, Oregon, the average daily maximum UV index in August is 5. A UV Index reading of 3 to 5 represents a moderate 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 August
Happy Valley, OR

Average temperature in August - Happy Valley, OR
  • Average high temperature in August: 81.7°F

The warmest month (with the highest average high temperature) is August (81.7°F).
The month with the lowest average high temperature is December (44.4°F).

  • Average low temperature in August: 54.5°F

The month with the highest average low temperature is August (54.5°F).
The coldest month (with the lowest average low temperature) is December (34.7°F).

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Average pressure in August
Happy Valley, OR

Average pressure in August - Happy Valley, OR
  • Average pressure in August: 30"Hg

The month with the highest atmospheric pressure is January (30.12"Hg).
The month with the lowest atmospheric pressure is August (30"Hg).

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Average wind speed in August
Happy Valley, OR

Average wind speed in August - Happy Valley, OR
  • Average wind speed in August: 3.7mph

The windiest month (with the highest average wind speed) is January (6mph).
The calmest month (with the lowest average wind speed) is August (3.7mph).

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Average humidity in August
Happy Valley, OR

Average humidity in August - Happy Valley, OR
  • Average humidity in August: 63%

The month with the highest relative humidity is February (84%).
The month with the lowest relative humidity is August (63%).

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Average rainfall in August
Happy Valley, OR

Average rainfall in August - Happy Valley, OR
  • Average rainfall in August: 0.35"

The wettest month (with the highest rainfall) is December (4.57").
The driest month (with the least rainfall) is July (0.31").

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Average rainfall days in August
Happy Valley, OR

Average rainfall days in August - Happy Valley, OR
  • Average rainfall days in August: 5 days

The month with the highest number of rainy days is March (20.4 days).
The month with the least rainy days is July (4.8 days).

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Average snowfall in August
Happy Valley, OR

Average snowfall in August - Happy Valley, OR
  • Average snowfall in August: 0"

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

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Average snowfall days in August
Happy Valley, OR

Average snowfall days in August - Happy Valley, OR
  • Average snowfall days in August: 0 days

The month with the highest number of snowfall days is February (2.3 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

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Average daylight in August /
Average sunshine in August
Happy Valley, OR

Average daylight in August / Average sunshine in August - Happy Valley, OR
  • Average daylight in August: 14h and 0min

The month with the longest days is June (Average daylight: 15h and 36min).
The month with the shortest days is December (Average daylight: 8h and 48min).

  • Average sunshine in August: 11h and 0min

The month with the most sunshine is August (Average sunshine: 11h and 0min).
The month with the least sunshine is February (Average sunshine: 4h and 12min).

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Average sunshine days in August
Happy Valley, OR

Average sunshine days in August - Happy Valley, OR
  • Average sunshine days in August: 23.8 days

The month with the most sunshine days is July (23.9 days).
The month with the least sunshine days is February (8.3 days).

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Average UV index in August
Happy Valley, OR

Average UV index in August - Happy Valley, OR
  • Average UV index in August: 5

The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).

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Average cloud cover in August
Happy Valley, OR

Average cloud cover in August - Happy Valley, OR
  • Average cloud cover in August: 22

The month with the most cloud cover is February (Cloud cover 57).
The month with the least cloud cover is August (Cloud cover 22).

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Average visibility in August
Happy Valley, OR

Average visibility in August - Happy Valley, OR
  • Average visibility in August: 6mi

The months with the highest visibility are July, August, September and October (6mi).
The months with the lowest visibility are January, February, March, April, May, June, November and December (5mi).

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Happy Valley, Oregon, USA

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