August weather forecast
Steilacoom, WA

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Weather in August

The last month of the summer, August, is also a moderately hot month in Steilacoom, Washington, with an average temperature fluctuating between 52.7°F (11.5°C) and 78.1°F (25.6°C).

Temperature

August, with its high-temperature average of 78.1°F (25.6°C) and a low-temperature average of 52.7°F (11.5°C), is the warmest month.

Humidity

The average relative humidity in August is 70%.

Rainfall

In August, the rain falls for 5 days. Throughout August, 0.55" (14mm) of precipitation is accumulated. Throughout the year, there are 172.9 rainfall days, and 30.08" (764mm) of precipitation is accumulated.

Snowfall

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

Daylight

The average length of the day in August is 14h and 10min.
On the first day of the month, sunrise is at 5:50 am and sunset at 8:42 pm. On the last day of August, sunrise is at 6:29 am and sunset at 7:51 pm PDT.

Sunshine

August has the most sunshine of the year, with an average of 10.6h of sunshine.

UV index

In August, the average daily maximum UV index is 4. A UV Index of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV radiation for average individuals.
Note: A daily high UV index of 4 in August leads to these guidelines:
Put precautions into practice - Protective measures against sun-induced damage are advised. Considering the Sun's intensity during midday, it's wise to minimize direct exposure. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure.
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Frequently asked questions

What time of the year is the hottest in Steilacoom?

The average temperatures in Steilacoom, Washington, reach their apex in August, averaging 78.1°F (25.6°C) at the high end and 52.7°F (11.5°C) at the low end.

What are August temperatures in Steilacoom?

The high-temperature in Steilacoom during August is 78.1°F (25.6°C) and the low-temperature is 52.7°F (11.5°C).

What is the average humidity in August in Steilacoom?

The average relative humidity in August in Steilacoom is 70%.

How much does it rain in Steilacoom in August?

In Steilacoom, Washington, during August, the rain falls for 5 days and regularly aggregates up to 0.55" (14mm) of precipitation.

When it does not snow in Steilacoom?

In Steilacoom, Washington, snow does not fall in April through October.

What is the average length of the day in August in Steilacoom?

The average day length in August is 14h and 10min.

When are sunrise and sunset in August in Steilacoom?

On the first day of August, sunrise is at 5:50 am and sunset at 8:42 pm. On the last day of the month, sunrise is at 6:29 am and sunset at 7:51 pm PDT.

What month has the most sunshine in Steilacoom?

August has the most sunshine of the year, with an average of 10.6h of sunshine.

How long on average sun shines in August in Steilacoom?

In Steilacoom, Washington, the average sunshine duration in August is 10.6h.

What is the UV index reading in August in Steilacoom?

In August, the average daily maximum UV index in Steilacoom is 4. A UV Index value of 3 to 5 symbolizes a medium hazard to health from unprotected exposure to UV radiation.
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
Steilacoom, WA

Average temperature in August - Steilacoom, WA
  • Average high temperature in August: 78.1°F

The warmest month (with the highest average high temperature) is August (78.1°F).
The month with the lowest average high temperature is December (43.7°F).

  • Average low temperature in August: 52.7°F

The month with the highest average low temperature is August (52.7°F).
The coldest months (with the lowest average low temperature) are February and December (34.3°F).

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Average pressure in August
Steilacoom, WA

Average pressure in August - Steilacoom, WA
  • Average pressure in August: 30.01"Hg

The month with the highest atmospheric pressure is January (30.09"Hg).
The months with the lowest atmospheric pressure are March, August and September (30.01"Hg).

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Average wind speed in August
Steilacoom, WA

Average wind speed in August - Steilacoom, WA
  • Average wind speed in August: 3.7mph

The windiest month (with the highest average wind speed) is March (5.2mph).
The calmest month (with the lowest average wind speed) is August (3.7mph).

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Average humidity in August
Steilacoom, WA

Average humidity in August - Steilacoom, WA
  • Average humidity in August: 70%

The months with the highest relative humidity are January and December (87%).
The month with the lowest relative humidity is July (68%).

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Average rainfall in August
Steilacoom, WA

Average rainfall in August - Steilacoom, WA
  • Average rainfall in August: 0.55"

The wettest month (with the highest rainfall) is December (4.69").
The driest month (with the least rainfall) is July (0.39").

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Average rainfall days in August
Steilacoom, WA

Average rainfall days in August - Steilacoom, WA
  • Average rainfall days in August: 5 days

The month with the highest number of rainy days is March (20.1 days).
The month with the least rainy days is August (5 days).

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Average snowfall in August
Steilacoom, WA

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

The month with the highest snowfall is February (2.28").
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
Steilacoom, WA

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

The month with the highest number of snowfall days is February (3.2 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

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

Average daylight in August / Average sunshine in August - Steilacoom, 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 36min).

  • Average sunshine in August: 10h and 4min

The month with the most sunshine is August (Average sunshine: 10h and 36min).
The month with the least sunshine is December (Average sunshine: 4h and 0min).

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Average sunshine days in August
Steilacoom, WA

Average sunshine days in August - Steilacoom, WA
  • Average sunshine days in August: 23.4 days

The month with the most sunshine days is August (23.4 days).
The month with the least sunshine days is February (9 days).

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Average UV index in August
Steilacoom, WA

Average UV index in August - Steilacoom, WA
  • Average UV index in August: 4

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
Steilacoom, WA

Average cloud cover in August - Steilacoom, WA
  • Average cloud cover in August: 27

The month with the most cloud cover is December (Cloud cover 59).
The month with the least cloud cover is August (Cloud cover 27).

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Average visibility in August
Steilacoom, WA

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

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

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Steilacoom, Washington, USA

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