August weather forecast
Trentwood, WA

Share

Weather in August

The last month of the summer, August, is also a moderately hot month in Trentwood, Washington, with an average temperature varying between 83.3°F (28.5°C) and 55.9°F (13.3°C).

Temperature

August, marked by an average high-temperature of 83.3°F (28.5°C) and a low-temperature of 55.9°F (13.3°C), is the warmest month.

Heat index

The heat index value during August is estimated at 82.4°F (28°C). Enduring exposure and continuous activity might cause a feeling of tiredness and induce heat cramps.
Take into consideration that the heat index values are calculated for shade and light wind conditions. Direct sunlight might cause an increase of up to 15 Fahrenheit (8 Celsius) degrees in the heat index.
Note: The heat index, also known as 'real feel' or 'apparent temperature', represents the fusion of temperature and moisture in the air to suggest how warm it feels. One's perception of temperature can vary depending on physical activity and individual heat sensitivity, influenced by factors like wind, attire, and metabolic variations. With direct sunlight, be aware that it might enhance the heat sensation, raising the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for babies and toddlers. Kids frequently fail to realize the necessity for resting and hydrating. Thirst is an advanced indication of dehydration - hence, maintaining hydration, especially during extended physical activities, becomes essential.

Humidity

With an average relative humidity of 43%, August is the least humid month.

Rainfall

July and August are months with the least rain when the rain falls for 5.5 days and typically aggregates up to 0.35" (9mm) of rain.

Snowfall

In Trentwood, snow does not fall in June through August.

Daylight

In Trentwood, Washington, the average length of the day in August is 14h and 13min.
On the first day of August, sunrise is at 5:27 am and sunset at 8:23 pm. On the last day of the month, sunrise is at 6:07 am and sunset at 7:30 pm PDT.

Sunshine

With an average of 12h of sunshine, August has the most sunshine of the year.

UV index

The average daily maximum UV index in August is 5. A UV Index value of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV radiation for the ordinary person.
Note: A maximum high daily UV index of 5 during August translates into the following directions:
Exercise prevention - Protecting skin and eyes from harm is required. The solar radiation around mid-day is intense; avoid the Sun and stay safe. Opt for tightly woven and loose clothing to enhance protection from the Sun.
Updated: Jun 29, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What part of the year is the hottest?

August is Trentwood's warmest month, registering average high temperatures of 83.3°F (28.5°C) and lows of 55.9°F (13.3°C).

How hot is it in August?

In August, in Trentwood, the average high-temperature is 83.3°F (28.5°C), and the average low-temperature is 55.9°F (13.3°C). The average heat index (a.k.a. 'felt air temperature', 'apparent temperature'), which combines air temperature and relative humidity, in August is estimated at 82.4°F (28°C).

What is the least humid month?

August is the least humid month, with an average relative humidity of 43%.

What is the average humidity in August?

The average relative humidity in August is 43%.

What is the driest month?

July and August are months with the least rain when the rain falls for 5.5 days and typically aggregates up to 0.35" (9mm) of rain.

How many days does it rain in August in Trentwood?

In August, the rain falls for 5.5 days. Throughout August, 0.35" (9mm) of precipitation is accumulated.

When it does not snow in Trentwood?

In Trentwood, Washington, snow does not fall in June through August.

Does it snow in Trentwood in August?

In Trentwood, Washington, in August, it doesn't snow. In September, it regularly snows.

How many hours of daylight does Trentwood have in August?

The average day length in August is 14h and 13min.

When are sunrise and sunset in August?

On the first day of August, sunrise is at 5:27 am and sunset at 8:23 pm. On the last day of the month, sunrise is at 6:07 am and sunset at 7:30 pm PDT.

What month has the most sunshine?

The month with the most sunshine is August, with an average of 12h of sunshine.

How many hours of sunshine does Trentwood have in August?

In August, the average sunshine duration is 12h.

What is the UV index reading in August?

The average daily maximum UV index in August is 5. A UV Index reading of 3 to 5 represents a moderate vulnerability from unsafe 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
Trentwood, WA

Average temperature in August - Trentwood, WA
  • Average high temperature in August: 83.3°F

The warmest month (with the highest average high temperature) is August (83.3°F).
The month with the lowest average high temperature is December (32°F).

  • Average low temperature in August: 55.9°F

The month with the highest average low temperature is August (55.9°F).
The coldest month (with the lowest average low temperature) is December (21.9°F).

Average pressure in August
Trentwood, WA

Average pressure in August - Trentwood, WA
  • Average pressure in August: 29.91"Hg

The month with the highest atmospheric pressure is January (30.19"Hg).
The month with the lowest atmospheric pressure is August (29.91"Hg).

Average wind speed in August
Trentwood, WA

Average wind speed in August - Trentwood, WA
  • Average wind speed in August: 4.8mph

The windiest month (with the highest average wind speed) is April (6.1mph).
The calmest month (with the lowest average wind speed) is December (4.7mph).

Average humidity in August
Trentwood, WA

Average humidity in August - Trentwood, WA
  • Average humidity in August: 43%

The month with the highest relative humidity is January (91%).
The month with the lowest relative humidity is August (43%).

Average rainfall in August
Trentwood, WA

Average rainfall in August - Trentwood, WA
  • Average rainfall in August: 0.35"

The wettest month (with the highest rainfall) is January (2.28").
The driest months (with the least rainfall) are July and August (0.35").

Average rainfall days in August
Trentwood, WA

Average rainfall days in August - Trentwood, WA
  • Average rainfall days in August: 5.5 days

The month with the highest number of rainy days is March (16 days).
The month with the least rainy days is July (5.1 days).

Average snowfall in August
Trentwood, WA

Average snowfall in August - Trentwood, WA
  • Average snowfall in August: 0"

The month with the highest snowfall is January (10.51").
The months with the least snowfall are June, July and August (0").

Average snowfall days in August
Trentwood, WA

Average snowfall days in August - Trentwood, WA
  • Average snowfall days in August: 0 days

The month with the highest number of snowfall days is December (13.9 days).
The months with the least snowfall days are June, July and August (0 days).

Average daylight in August /
Average sunshine in August
Trentwood, WA

Average daylight in August / Average sunshine in August - Trentwood, WA
  • Average daylight in August: 14h and 1min

The month with the longest days is June (Average daylight: 15h and 54min).
The month with the shortest days is December (Average daylight: 8h and 30min).

  • Average sunshine in August: 12h and 0min

The month with the most sunshine is August (Average sunshine: 12h and 0min).
The months with the least sunshine are January and December (Average sunshine: 3h and 48min).

Average sunshine days in August
Trentwood, WA

Average sunshine days in August - Trentwood, WA
  • Average sunshine days in August: 23.2 days

The month with the most sunshine days is July (24.3 days).
The month with the least sunshine days is March (10.3 days).

Average UV index in August
Trentwood, WA

Average UV index in August - Trentwood, WA
  • Average UV index in August: 5

The month with the highest UV index is July (UV index 6).
The month with the lowest UV index is December (UV index 1).

Average cloud cover in August
Trentwood, WA

Average cloud cover in August - Trentwood, WA
  • Average cloud cover in August: 13

The month with the most cloud cover is January (Cloud cover 62).
The months with the least cloud cover are July and August (Cloud cover 13).

Average visibility in August
Trentwood, WA

Average visibility in August - Trentwood, WA
  • Average visibility in August: 6mi

The months with the highest visibility are April, May, June, July, August, September and October (6mi).
The months with the lowest visibility are January, February and December (4mi).

Trentwood, Washington, USA

Weather forecast for your location

1. Click Locate me button
2. Allow the app to use your location