August weather forecast
Pendleton, OR

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These large silos and creatively shaped red barns stand in the middle of a vast field of harvested wheat, in Pendleton, Oregon
These large silos and creatively shaped red barns stand in the middle of a vast field of harvested wheat, in Pendleton, Oregon

Weather in August

In August, there's a slight respite from July's peak summer heat in Pendleton, albeit temps remain high. While the daylight hours reduce, it's imperceptible and the town continues to enjoy long days. Outdoor activities continue unabated, with occasional wind gusts adding to the charm of the warm weather. The UV index drops marginally, yet a sharp eye must be kept on the necessary sun protection measures. All told, August carries forward the charm of a typical Oregonian summer.

Temperature

August's advent denotes a minor fluctuation in the average high-temperature to a still warm 84°F (28.9°C) from July's 84.4°F (29.1°C). Pendleton's August nights see a large temperature deviation, with temperatures resting at a low of 61.7°F (16.5°C).

Humidity

The least humid month is August, with an average relative humidity of 38%.

Rainfall

In August, the rain falls for 3.6 days. Throughout August, 0.31" (8mm) of precipitation is accumulated. Throughout the year, there are 132.7 rainfall days, and 12.91" (328mm) of precipitation is accumulated.

Snowfall

May through August and October are months without snowfall.

Daylight

The average length of the day in August is 14h and 4min.
On the first day of August, sunrise is at 5:39 am and sunset at 8:23 pm. On the last day of the month, sunrise is at 6:16 am and sunset at 7:34 pm PDT.

Sunshine

The months with the most sunshine are July and August, with an average of 12h of sunshine.

UV index

In Pendleton, Oregon, the average daily maximum UV index in August is 5. A UV Index reading of 3 to 5 represents a moderate health risk from unprotected exposure to Sun's UV rays for the ordinary person.
Note: The daily high UV index of 5 in August translates into this advice:
Ensure safety - Imperative it is to shield skin and eyes from damage. UV radiation from the Sun is most dangerous during midday; take precautions and seek shade. To cut down UV radiation exposure by about half, sport a wide-brim hat.

Frequently asked questions

How hot is it in August?

The average high-temperature and low-temperature during August are 84°F (28.9°C) and 61.7°F (16.5°C) respectively.

What is the least humid month?

With an average relative humidity of 38%, August is the least humid month.

What is the average humidity in August?

The average relative humidity in August is 38%.

How many days does it rain in August?

In Pendleton, in August, it is raining for 3.6 days, with typically 0.31" (8mm) of accumulated precipitation.

When it does not snow?

In Pendleton, snow does not fall in May through August and October.

Does it snow in August?

In Pendleton, Oregon, in August, it doesn't snow. In September, it regularly snows.

What is the average length of the day in August?

In Pendleton, the average day length in August is 14h and 4min.

What time are sunrise and sunset in August?

In August, on the first day of the month, sunrise is at 5:39 am and sunset at 8:23 pm. On the last day of the month, sunrise is at 6:16 am and sunset at 7:34 pm PDT.

What is the month with the most sunshine?

July and August, with an average of 12h of sunshine, are months with the most sunshine.

How many hours of sunshine does Pendleton have in August?

The average sunshine duration in August is 12h.

What is the UV index intensity in August?

In August, the average daily maximum UV index is 5. A UV Index estimate of 3 to 5 represents a medium hazard to health 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
Pendleton, OR

Average temperature in August - Pendleton, OR
  • Average high temperature in August: 84°F

The warmest month (with the highest average high temperature) is July (84.4°F).
The month with the lowest average high temperature is December (37.9°F).

  • Average low temperature in August: 61.7°F

The month with the highest average low temperature is August (61.7°F).
The coldest month (with the lowest average low temperature) is December (27.3°F).

Average pressure in August
Pendleton, OR

Average pressure in August - Pendleton, OR
  • Average pressure in August: 29.91"Hg

The month with the highest atmospheric pressure is January (30.2"Hg).
The month with the lowest atmospheric pressure is August (29.91"Hg).

Average wind speed in August
Pendleton, OR

Average wind speed in August - Pendleton, OR
  • Average wind speed in August: 6.5mph

The windiest month (with the highest average wind speed) is April (8.3mph).
The calmest month (with the lowest average wind speed) is September (6.2mph).

Average humidity in August
Pendleton, OR

Average humidity in August - Pendleton, OR
  • Average humidity in August: 38%

The month with the highest relative humidity is January (79%).
The month with the lowest relative humidity is August (38%).

Average rainfall in August
Pendleton, OR

Average rainfall in August - Pendleton, OR
  • Average rainfall in August: 0.31"

The wettest month (with the highest rainfall) is March (1.65").
The driest month (with the least rainfall) is July (0.24").

Average rainfall days in August
Pendleton, OR

Average rainfall days in August - Pendleton, OR
  • Average rainfall days in August: 3.6 days

The month with the highest number of rainy days is March (17.1 days).
The month with the least rainy days is August (3.6 days).

Average snowfall in August
Pendleton, OR

Average snowfall in August - Pendleton, OR
  • Average snowfall in August: 0"

The month with the highest snowfall is February (3.62").
The months with the least snowfall are May, June, July, August and October (0").

Average snowfall days in August
Pendleton, OR

Average snowfall days in August - Pendleton, OR
  • Average snowfall days in August: 0 days

The month with the highest number of snowfall days is December (5.5 days).
The months with the least snowfall days are May, June, July, August and October (0 days).

Average daylight in August /
Average sunshine in August
Pendleton, OR

Average daylight in August / Average sunshine in August - Pendleton, OR
  • Average daylight in August: 14h and 1min

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: 12h and 0min

The months with the most sunshine are July and August (Average sunshine: 12h and 0min).
The months with the least sunshine are January and December (Average sunshine: 5h and 24min).

Average sunshine days in August
Pendleton, OR

Average sunshine days in August - Pendleton, OR
  • Average sunshine days in August: 22.9 days

The month with the most sunshine days is July (24.4 days).
The month with the least sunshine days is March (11.7 days).

Average UV index in August
Pendleton, OR

Average UV index in August - Pendleton, OR
  • Average UV index in August: 5

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

Average cloud cover in August
Pendleton, OR

Average cloud cover in August - Pendleton, OR
  • Average cloud cover in August: 9

The month with the most cloud cover is February (Cloud cover 44).
The month with the least cloud cover is August (Cloud cover 9).

Average visibility in August
Pendleton, OR

Average visibility in August - Pendleton, OR
  • 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).

Pendleton, Oregon, USA

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