August weather forecast
Plymouth, WA

Share

Weather in August

The last month of the summer, August, is also a hot month in Plymouth, Washington, with temperature in the range of an average high of 87.8°F (31°C) and an average low of 64.2°F (17.9°C).

Temperature

The shift into August reveals an average high-temperature of a still hot 87.8°F (31°C), closely mirroring July's climate. A sharp divergence from daytime highs is noted during the month of August, with the average nighttime temperature settling at a comfortable 64.2°F (17.9°C).

Humidity

July and August, with an average relative humidity of 36%, are the least humid months.

Rainfall

In Plymouth, Washington, in August, during 4.1 rainfall days, 0.28" (7mm) of precipitation is typically accumulated. In Plymouth, during the entire year, the rain falls for 106.1 days and collects up to 7.76" (197mm) of precipitation.

Snowfall

In Plymouth, snow does not fall in April through August and October.

Daylight

In Plymouth, Washington, the average length of the day in August is 14h and 5min.
On the first day of the month, sunrise is at 5:41 am and sunset at 8:26 pm. On the last day of August, sunrise is at 6:18 am and sunset at 7:36 pm PDT.

Sunshine

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

UV index

In August, the average daily maximum UV index is 6. A UV Index reading of 6 to 7 represents a high health risk from exposure to the Sun's UV rays for the ordinary person.
Note: The maximum UV index, 6 during August, leads to the following recommendations:
Ward off overexposure. Defence against solar harm is crucial. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. Opt for tightly woven and loose clothing to enhance protection from the Sun.
Updated: Aug 18, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How hot is it in August?

In August, the average high-temperature and low-temperature are 87.8°F (31°C) and 64.2°F (17.9°C) respectively.

What is the least humid month?

July and August, with an average relative humidity of 36%, are the least humid months in Plymouth.

What is the average humidity in August?

In Plymouth, the average relative humidity in August is 36%.

How many days does it rain in August?

In Plymouth, during August, the rain falls for 4.1 days and regularly aggregates up to 0.28" (7mm) of precipitation.

When it does not snow?

In Plymouth, snow does not fall in April through August and October.

Does it snow in August?

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

How many hours of daylight does Plymouth have in August?

The average day length in August is 14h and 5min.

When is the sunrise / sunset in August?

In August, on the first day of the month, sunrise is at 5:41 am and sunset at 8:26 pm. On the last day of the month, sunrise is at 6:18 am and sunset at 7:36 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 long on average sun shines in August?

The average sunshine duration in August is 12h.

How high is the UV index in August?

In Plymouth, the average daily maximum UV index in August is 6. A UV Index reading of 6 to 7 represents a high health risk 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
Plymouth, WA

Average temperature in August - Plymouth, WA
  • Average high temperature in August: 87.8°F

The warmest month (with the highest average high temperature) is July (89.1°F).
The month with the lowest average high temperature is December (38.7°F).

  • Average low temperature in August: 64.2°F

The month with the highest average low temperature is August (64.2°F).
The coldest month (with the lowest average low temperature) is December (28.6°F).

Average pressure in August
Plymouth, WA

Average pressure in August - Plymouth, 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
Plymouth, WA

Average wind speed in August - Plymouth, WA
  • Average wind speed in August: 7.2mph

The windiest month (with the highest average wind speed) is April (9.3mph).
The calmest month (with the lowest average wind speed) is December (6.2mph).

Average humidity in August
Plymouth, WA

Average humidity in August - Plymouth, WA
  • Average humidity in August: 36%

The month with the highest relative humidity is January (79%).
The months with the lowest relative humidity are July and August (36%).

Average rainfall in August
Plymouth, WA

Average rainfall in August - Plymouth, WA
  • Average rainfall in August: 0.28"

The wettest month (with the highest rainfall) is March (1.02").
The driest month (with the least rainfall) is July (0.16").

Average rainfall days in August
Plymouth, WA

Average rainfall days in August - Plymouth, WA
  • Average rainfall days in August: 4.1 days

The month with the highest number of rainy days is March (13.1 days).
The month with the least rainy days is July (3.8 days).

Average snowfall in August
Plymouth, WA

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

The month with the highest snowfall is February (2.83").
The months with the least snowfall are April, May, June, July, August and October (0").

Average snowfall days in August
Plymouth, WA

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

The month with the highest number of snowfall days is December (3.2 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
Plymouth, WA

Average daylight in August / Average sunshine in August - Plymouth, WA
  • 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 42min).

  • 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
Plymouth, WA

Average sunshine days in August - Plymouth, WA
  • Average sunshine days in August: 24.5 days

The month with the most sunshine days is July (25.3 days).
The month with the least sunshine days is February (14 days).

Average UV index in August
Plymouth, WA

Average UV index in August - Plymouth, WA
  • Average UV index in August: 6

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
Plymouth, WA

Average cloud cover in August - Plymouth, WA
  • Average cloud cover in August: 10

The months with the most cloud cover are January and December (Cloud cover 44).
The month with the least cloud cover is July (Cloud cover 9).

Average visibility in August
Plymouth, WA

Average visibility in August - Plymouth, WA
  • 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).

Plymouth, Washington, USA

Weather forecast for your location

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