August weather forecast
Arlington, OR

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Weather in August

August, the last month of the summer in Arlington, is another warm month, with an average temperature varying between 61.3°F (16.3°C) and 84.7°F (29.3°C).

Temperature

Arlington commences August with an average high-temperature of a still moderately hot 84.7°F (29.3°C), maintaining a close resemblance to the previous month. Following the sharp contrast to daytime warmth, an average nighttime temperature of 61.3°F (16.3°C) gets registered in Arlington during August.

Heat index

The average heat index in August is computed to be 84.2°F (29°C). If one endures exposure and continues to be active, it might result in tiredness and heat cramps.
Regarding the heat index, one should be aware it's determined by shaded settings and mild winds. Direct exposure to sunlight could raise the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'feels like', represents the fusion of temperature and moisture in the air to suggest how warm it feels. This effect is personal, influenced by the individual's physical activity and heat sensitivity, shaped by factors including wind, attire, and metabolic variations. Taking into account that direct sunlight can boost the heat effect, the heat index may rise by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. Youngsters frequently overlook the need for breaks and fluid intake. Thirst is an advanced sign of dehydration - thereby highlighting the importance of keeping hydrated, particularly during long physical activities.

Humidity

July and August, with an average relative humidity of 40%, are the least humid months.

Rainfall

In August, the rain falls for 5 days. Throughout August, 0.39" (10mm) of precipitation is accumulated. Throughout the year, there are 107.9 rainfall days, and 8.46" (215mm) of precipitation is accumulated.

Snowfall

April through October are months without snowfall.

Daylight

In Arlington, the average length of the day in August is 14h and 4min.
On the first day of August, sunrise is at 5:45 am and sunset at 8:29 pm. On the last day of the month, sunrise is at 6:21 am and sunset at 7:39 pm PDT.

Sunshine

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

UV index

The average daily maximum UV index in August is 5. A UV Index of 3 to 5 symbolizes a medium health hazard from unprotected exposure to Sun's UV rays for average individuals.
Note: The daily high UV index of 5 in August translates into this advice:
Heed the precautions - Protecting the skin and eyes from damage is compulsory. Sun exposure should be minimized, especially during midday, to avoid harmful UV radiation. Loose clothes with a tight weave are optimal for safeguarding yourself against the Sun's rays.
Updated: Aug 20, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How hot is August?

The high-temperature, in August, in Arlington, records 84.7°F (29.3°C), while the low-temperature is 61.3°F (16.3°C). The average heat index (a.k.a. 'apparent temperature', 'real feel'), which calculates the temperature value influenced by the moisture in the air, in August is computed to be 84.2°F (29°C).

What is the least humid month?

July and August, with an average relative humidity of 40%, are the least humid months.

What is the average humidity in August?

In August, the average relative humidity in Arlington is 40%.

How much does it rain in August?

In Arlington, during August, the rain falls for 5 days and regularly aggregates up to 0.39" (10mm) of precipitation.

When it does not snow?

In Arlington, snow does not fall in April through October.

What is the average length of the day in August?

The average day length in August is 14h and 4min.

When are sunrise and sunset in August?

On the first day of August, sunrise is at 5:45 am and sunset at 8:29 pm. On the last day of the month, sunrise is at 6:21 am and sunset at 7:39 pm PDT.

What are the months 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 Arlington have in August?

In August, the average sunshine duration in Arlington is 12h.

What is the UV index intensity in August?

In August, the average daily maximum UV index is 5. A UV Index reading of 3 to 5 represents a medium hazard to health from exposure to Sun's UV rays.
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
Arlington, OR

Average temperature in August - Arlington, OR
  • Average high temperature in August: 84.7°F

The warmest month (with the highest average high temperature) is July (85.5°F).
The month with the lowest average high temperature is December (36.5°F).

  • Average low temperature in August: 61.3°F

The month with the highest average low temperature is August (61.3°F).
The coldest month (with the lowest average low temperature) is December (26.6°F).

Average pressure in August
Arlington, OR

Average pressure in August - Arlington, OR
  • Average pressure in August: 29.93"Hg

The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is August (29.93"Hg).

Average wind speed in August
Arlington, OR

Average wind speed in August - Arlington, OR
  • Average wind speed in August: 7.7mph

The windiest month (with the highest average wind speed) is June (9.2mph).
The calmest month (with the lowest average wind speed) is January (6.3mph).

Average humidity in August
Arlington, OR

Average humidity in August - Arlington, OR
  • Average humidity in August: 40%

The month with the highest relative humidity is January (83%).
The months with the lowest relative humidity are July and August (40%).

Average rainfall in August
Arlington, OR

Average rainfall in August - Arlington, OR
  • Average rainfall in August: 0.39"

The wettest month (with the highest rainfall) is January (1.1").
The driest month (with the least rainfall) is July (0.24").

Average rainfall days in August
Arlington, OR

Average rainfall days in August - Arlington, OR
  • Average rainfall days in August: 5 days

The month with the highest number of rainy days is March (12.3 days).
The month with the least rainy days is July (4.4 days).

Average snowfall in August
Arlington, OR

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

The month with the highest snowfall is February (3.86").
The months with the least snowfall are April, May, June, July, August, September and October (0").

Average snowfall days in August
Arlington, OR

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

The month with the highest number of snowfall days is December (4.8 days).
The months with the least snowfall days are April, May, June, July, August and October (0 days).

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

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

The month with the longest days is June (Average daylight: 15h and 42min).
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 month with the least sunshine is January (Average sunshine: 5h and 12min).

Average sunshine days in August
Arlington, OR

Average sunshine days in August - Arlington, OR
  • Average sunshine days in August: 23.6 days

The month with the most sunshine days is July (25 days).
The month with the least sunshine days is February (14 days).

Average UV index in August
Arlington, OR

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

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

Average cloud cover in August
Arlington, OR

Average cloud cover in August - Arlington, OR
  • Average cloud cover in August: 10

The month with the most cloud cover is January (Cloud cover 48).
The month with the least cloud cover is July (Cloud cover 9).

Average visibility in August
Arlington, OR

Average visibility in August - Arlington, OR
  • Average visibility in August: 6mi

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

Arlington, Oregon, USA

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