August weather forecast
Salem, OR

An evening shot of the leafy town of Salem in Oregon
An evening shot of the leafy town of Salem in Oregon

Weather in August

The last month of the summer, August, is also a moderately hot month in Salem, Oregon, with an average temperature ranging between min 54.1°F (12.3°C) and max 82°F (27.8°C).

Temperature

The warmest month is August, with an average high-temperature of 82°F (27.8°C) and an average low-temperature of 54.1°F (12.3°C).

Heat index

In August, the average heat index is appraised at a tropical 86°F (30°C). Constant exposure and activity lead to possible fatigue. Prolonged exercise may result in heat cramps.
Take into consideration that the heat index values are calculated for shade and light wind conditions. Exposure to direct sunshine can increase heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature', 'feels like', 'felt air temperature', or 'real feel', is an index that combines air temperature and relative humidity to determine the human-perceived temperature equivalent. Additional factors like activity, differences in body mass, height, and shape, clothing, and pregnancy affect individual temperature impact. Be aware that direct exposure to sunlight increases heat impact and may raise the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. 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.

Humidity

With an average relative humidity of 65%, August is the least humid month.

Rainfall

In Salem, Oregon, in August, it is raining for 4 days, with typically 0.31" (8mm) of accumulated precipitation. Throughout the year, there are 162.5 rainfall days, and 25.08" (637mm) of precipitation is accumulated.

Snowfall

April through October are months without snowfall.

Daylight

The average length of the day in August is 14h and 1min.
On the first day of the month, sunrise is at 5:57 am and sunset at 8:39 pm. On the last day of August, in Salem, sunrise is at 6:33 am and sunset at 7:51 pm PDT.

Sunshine

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

UV index

In Salem, the average daily maximum UV index in August is 5. A UV Index estimate of 3 to 5 represents a moderate threat to health from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: The average daily UV index of 5 in August transform into the following instructions:
Take precautions - Protection against skin and eye damage is obliged. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.
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FAQ

What is the warmest month in Salem?

With an average high-temperature of 82°F (27.8°C) and an average low-temperature of 54.1°F (12.3°C), August is the warmest month in Salem.

What is the temperature in August in Salem?

In Salem, Oregon, in August, the average high-temperature is 82°F (27.8°C), and the average low-temperature is 54.1°F (12.3°C). The average heat index (a.k.a. 'feels like', 'apparent temperature'), which represents the influence of relative humidity on air temperature, in August is appraised at 86°F (30°C).

What is the least humid month in Salem?

With an average relative humidity of 65%, August is the least humid month.

What is the average humidity in August in Salem?

The average relative humidity in August in Salem is 65%.

How many days does it rain in August in Salem?

In Salem, Oregon, during August, the rain falls for 4 days and regularly aggregates up to 0.31" (8mm) of precipitation.

When it does not snow in Salem?

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

How many hours of daylight does Salem have in August?

The average day length in August in Salem is 14h and 1min.

When are sunrise and sunset in August in Salem?

In August, on the first day of the month, sunrise is at 5:57 am and sunset at 8:39 pm. On the last day of the month, sunrise is at 6:33 am and sunset at 7:51 pm PDT.

What month has the most sunshine in Salem?

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

How many hours of sunshine does Salem have in August?

In August, the average sunshine duration in Salem, Oregon, is 11h.

How high is the UV index in August in Salem?

The average daily maximum UV index in August in Salem is 5. A UV Index value of 3 to 5 symbolizes a moderate vulnerability from exposure to the Sun's UV radiation.
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
Salem, OR

Average temperature in August - Salem, OR
  • Average high temperature in August: 82°F

The warmest month (with the highest average high temperature) is August (82°F).
The month with the lowest average high temperature is December (45.5°F).

  • Average low temperature in August: 54.1°F

The month with the highest average low temperature is August (54.1°F).
The coldest month (with the lowest average low temperature) is December (34.5°F).

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Average pressure in August
Salem, OR

Average pressure in August - Salem, OR
  • Average pressure in August: 30.01"Hg

The month with the highest atmospheric pressure is January (30.11"Hg).
The months with the lowest atmospheric pressure are August and September (30.01"Hg).

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Average wind speed in August
Salem, OR

Average wind speed in August - Salem, OR
  • Average wind speed in August: 4.2mph

The windiest months (with the highest average wind speed) are January, March and November (5.5mph).
The calmest month (with the lowest average wind speed) is August (4.2mph).

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Average humidity in August
Salem, OR

Average humidity in August - Salem, OR
  • Average humidity in August: 65%

The months with the highest relative humidity are January, February and December (86%).
The month with the lowest relative humidity is August (65%).

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Average rainfall in August
Salem, OR

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

The wettest month (with the highest rainfall) is December (3.94").
The driest month (with the least rainfall) is July (0.28").

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Average rainfall days in August
Salem, OR

Average rainfall days in August - Salem, OR
  • Average rainfall days in August: 4 days

The month with the highest number of rainy days is March (19.6 days).
The month with the least rainy days is July (3.9 days).

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Average snowfall in August
Salem, OR

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

The month with the highest snowfall is February (1.18").
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
Salem, OR

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

The month with the highest number of snowfall days is February (1.8 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).

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

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

The month with the longest days is June (Average daylight: 15h and 33min).
The month with the shortest days is December (Average daylight: 8h and 51min).

  • 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
Salem, OR

Average sunshine days in August - Salem, OR
  • Average sunshine days in August: 25.2 days

The month with the most sunshine days is July (26.3 days).
The month with the least sunshine days is March (8.8 days).

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Average UV index in August
Salem, OR

Average UV index in August - Salem, 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
Salem, OR

Average cloud cover in August - Salem, OR
  • Average cloud cover in August: 21

The month with the most cloud cover is February (Cloud cover 60).
The month with the least cloud cover is August (Cloud cover 21).

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Average visibility in August
Salem, OR

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

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

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