August weather forecast and climate
Salem, OR

An evening shot of the leafy town of Salem in Oregon, with a clear dusk sky
An evening shot of the leafy town of Salem in Oregon, with a clear dusk sky
The last month of the summer, August, is also a moderately hot month in Salem, Oregon, with temperature in the range of an average high of 82°F (27.8°C) and an average low of 54.1°F (12.3°C).

Temperature

August is the warmest month, 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

The average heat index is calculated to 85.5°F (29.7°C). Exhaustion is likely with prolonged exposure and activity. Sustaining activity may result in heat cramps.
Take into consideration that the heat index values are calculated for shade and light wind conditions. With the exposure to direct sunlight, the heat index may be increased by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature', 'feels like', 'real feel', or 'felt air temperature', is a measure that combines both air temperature and relative humidity into a single value that indicates how hot the weather feels. This effect is subjective, depending on the activity and individual's heat perception influenced by various reasons (wind, clothing, pregnancy). Bear in mind that direct sunshine exposure increases weather impact, and may raise heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. Young children are generally more endangered than adults, as they usually less sweat. And also, due to larger skin surface relative to their small bodies and higher heat production as a result of their activity.

Humidity

August is the least humid month in Salem, Oregon, with an average relative humidity of 65%.

Rainfall

In Salem, during August, the rain falls for 4 days and regularly aggregates up to 0.31" (8mm) of precipitation. In Salem, during the entire year, the rain falls for 162.5 days and collects up to 25.08" (637mm) of precipitation.

Snowfall

In Salem snow does not fall in April through October.

Daylight

In August, the average length of the day in Salem is 14h.

Sunshine

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

UV index

In August, the average daily maximum UV index is 5. A UV Index of 3 to 5 symbolizes a medium vulnerability from unsafe exposure to the UV radiation for average individuals.
Note: The average daily UV index of 5 transform into the following instructions:
Take precautions - Protection against the skin and eye damage is obliged. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.

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.

What is the temperature in August in Salem?

In August, in Salem, the average high-temperature is 82°F (27.8°C), and the average low-temperature is 54.1°F (12.3°C). In August, the average heat index (a.k.a. 'apparent temperature', 'real feel'), that combines air temperature and relative humidity, is calculated to 85.5°F (29.7°C).

What is the least humid month in Salem?

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

What is the average humidity in August in Salem?

The average relative humidity in August is 65%.

How many days does it rain in August in Salem?

In Salem, Oregon, in August, during 4 rainfall days, 0.31" (8mm) of precipitation is typically accumulated.

When it does not snow in Salem?

April through October are months without snowfall.

How many hours of daylight does Salem have in August?

The average length of the day in August is 14h.

What month has the most sunshine in Salem?

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

How many hours of sunshine does Salem have in August?

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

How high is the UV index in August in Salem?

The average daily maximum UV index in August is 5. A UV Index value of 3 to 5 symbolizes a moderate vulnerability from the exposure to the Sun's UV radiation.
Average temperature in August - Salem, OR
  • Average high temperature in August: 27.8°C

The warmest month (with the highest average high temperature) is August (27.8°C).
The month with the lowest average high temperature is December (7.5°C).

  • Average low temperature in August: 12.3°C

The month with the highest average low temperature is August (12.3°C).
The coldest month (with the lowest average low temperature) is December (1.4°C).

Average pressure in August - Salem, OR
  • Average pressure in August: 1016.2mbar

The month with the highest atmospheric pressure is January (1019.7mbar).
The month with the lowest atmospheric pressure is August (1016.2mbar).

Average wind speed in August - Salem, OR
  • Average wind speed in August: 6.8km/h

The windiest month (with the highest average wind speed) is March (8.9km/h).
The calmest month (with the lowest average wind speed) is August (6.8km/h).

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

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

Average rainfall in August - Salem, OR
  • Average rainfall in August: 8mm

The wettest month (with the highest rainfall) is December (100mm).
The driest month (with the least rainfall) is July (7mm).

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).

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

The month with the highest snowfall is February (30mm).
Months with the least snowfall are April, May, June, July, August, September and October (0mm).

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).
Months with the least snowfall days are April, May, June, July, August, September and October (0 days).

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

The month with the longest days is June (Average daylight: 15.6h).
The month with the shortest days is December (Average daylight: 8.8h).

  • Average sunshine in August: 11h

The month with the most sunshine is August (Average sunshine: 11h).
The month with the least sunshine is February (Average sunshine: 4.2h).

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).

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).
Months with the lowest UV index are January, February, November and December (UV index 2).

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).

Average visibility in August - Salem, OR
  • Average visibility in August: 9km

Months with the highest visibility are July, August and September (9km).
Months with the lowest visibility are January, February, March, April, May, June, October, November and December (8km).