August weather forecast
Duvall, WA

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Weather in August

The last month of the summer, August, is another warm month in Duvall, Washington, with an average temperature varying between 75.7°F (24.3°C) and 50.2°F (10.1°C).

Temperature

August, recording an average high temperature of 75.7°F (24.3°C) and a low temperature of 50.2°F (10.1°C), is Duvall's warmest month.

Humidity

The average relative humidity in August in Duvall is 72%.

Rainfall

The months with the least rainfall in Duvall, Washington, are July and August Rain falls for 4.8 days and accumulates 0.31" (8mm) of rain.

Snowfall

May through October are months without snowfall in Duvall.

Daylight

The average length of the day in August is 14h and 13min.
On the first day of August, sunrise is at 5:46 am and sunset at 8:42 pm. On the last day of the month, sunrise is at 6:26 am and sunset at 7:49 pm PDT.

Sunshine

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

UV index

In Duvall, the average daily maximum UV index in August is 4. A UV Index of 3 to 5 symbolizes a medium vulnerability from unprotected exposure to Sun's UV rays for average individuals.
Note: The maximum UV index of 4 during August translates into these guidelines:
Act with care - The need to guard against sun damage is communicated. To protect against the Sun's most potent rays, avoid direct exposure around midday. In the presence of strong sunlight, it's crucial to wear sunglasses that ward off UVA and UVB rays.
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Frequently asked questions

What part of the year is the hottest in Duvall?

August stands out as Duvall's warmest month, with an average high-temperature of 75.7°F (24.3°C) and a low-temperature of 50.2°F (10.1°C).

What are August temperatures in Duvall?

In August, the average high-temperature and low-temperature in Duvall are 75.7°F (24.3°C) and 50.2°F (10.1°C) respectively.

What is the average humidity in August in Duvall?

The average relative humidity in August in Duvall, Washington, is 72%.

What is the driest month in Duvall?

July and August are months with the least rain in Duvall when the rain falls for 4.8 days and typically aggregates up to 0.31" (8mm) of rain.

How much does it rain in Duvall in August?

In Duvall, Washington, during August, the rain falls for 4.8 days and regularly aggregates up to 0.31" (8mm) of precipitation.

When it does not snow in Duvall?

May through October are months without snowfall in Duvall.

How many hours of daylight does Duvall have in August?

In August, the average day length in Duvall, Washington, is 14h and 13min.

When is the sunrise / sunset in August in Duvall?

On the first day of August, sunrise is at 5:46 am and sunset at 8:42 pm. On the last day of the month, sunrise is at 6:26 am and sunset at 7:49 pm PDT.

What month has the most sunshine in Duvall?

The month with the most sunshine in Duvall, Washington, is August, with an average of 10.6h of sunshine.

How many hours of sunshine does Duvall have in August?

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

How high is the UV index in August in Duvall?

In August, the average daily maximum UV index in Duvall is 4. A UV Index estimate of 3 to 5 represents a moderate health threat 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
Duvall, WA

Average temperature in August - Duvall, WA
  • Average high temperature in August: 75.7°F

The warmest month (with the highest average high temperature) is August (75.7°F).
The month with the lowest average high temperature is December (41.4°F).

  • Average low temperature in August: 50.2°F

The month with the highest average low temperature is August (50.2°F).
The coldest month (with the lowest average low temperature) is December (32.2°F).

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Average pressure in August
Duvall, WA

Average pressure in August - Duvall, WA
  • Average pressure in August: 30"Hg

The month with the highest atmospheric pressure is January (30.1"Hg).
The month with the lowest atmospheric pressure is August (30"Hg).

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Average wind speed in August
Duvall, WA

Average wind speed in August - Duvall, WA
  • Average wind speed in August: 3.3mph

The windiest month (with the highest average wind speed) is January (5mph).
The calmest month (with the lowest average wind speed) is August (3.3mph).

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Average humidity in August
Duvall, WA

Average humidity in August - Duvall, WA
  • Average humidity in August: 72%

The months with the highest relative humidity are January, February and December (86%).
The month with the lowest relative humidity is July (71%).

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Average rainfall in August
Duvall, WA

Average rainfall in August - Duvall, WA
  • Average rainfall in August: 0.31"

The wettest month (with the highest rainfall) is December (2.6").
The driest months (with the least rainfall) are July and August (0.31").

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Average rainfall days in August
Duvall, WA

Average rainfall days in August - Duvall, WA
  • Average rainfall days in August: 4.8 days

The month with the highest number of rainy days is March (15.8 days).
The month with the least rainy days is August (4.8 days).

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Average snowfall in August
Duvall, WA

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

The month with the highest snowfall is February (1.46").
The months with the least snowfall are May, June, July, August, September and October (0").

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Average snowfall days in August
Duvall, WA

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

The month with the highest number of snowfall days is February (2.7 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
Duvall, WA

Average daylight in August / Average sunshine in August - Duvall, 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: 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: 3h and 54min).

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Average sunshine days in August
Duvall, WA

Average sunshine days in August - Duvall, WA
  • Average sunshine days in August: 24.1 days

The month with the most sunshine days is August (24.1 days).
The month with the least sunshine days is February (12.6 days).

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Average UV index in August
Duvall, WA

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

The month with the highest UV index is July (UV index 5).
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
Duvall, WA

Average cloud cover in August - Duvall, 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
Duvall, WA

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

The months with the highest visibility are July and August (6mi).
The months with the lowest visibility are January, February, March, April, November and December (4mi).

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Duvall, Washington, USA

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