August weather forecast
Piedmont, WA

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Weather in August

August, the last month of the summer in Piedmont, is a pleasant month, with temperature in the range of an average low of 48.6°F (9.2°C) and an average high of 69.1°F (20.6°C).

Temperature

In Piedmont, the peak average temperatures are observed in August, with a high of 69.1°F (20.6°C) and a low of 48.6°F (9.2°C).

Humidity

The months with the lowest humidity are July and August, with an average relative humidity of 76%.

Rainfall

The months with the least rainfall are July and August Rain falls for 5.4 days and accumulates 0.43" (11mm) of rain.

Snowfall

May through October are months without snowfall in Piedmont, Washington.

Daylight

In Piedmont, the average length of the day in August is 14h and 14min.
On the first day of the month, sunrise is at 5:52 am and sunset at 8:50 pm. On the last day of August, sunrise is at 6:32 am and sunset at 7:57 pm PDT.

Sunshine

July and August, with an average of 10.4h of sunshine, are months with the most sunshine.

UV index

The months with the highest UV index are June through August, with an average maximum UV index of 4. A UV Index of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV rays for ordinary individuals.
Note: In August, an average UV index of 4 transforms into the following instructions:
Proceed with care. Light skin individuals may be exposed to burns in fewer than 30 minutes. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. For optimum UV protection, wear sun-resistant attire complemented with a hat and quality shades.
Updated: Aug 13, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the hottest time of year?

August, with its high-temperature average of 69.1°F (20.6°C) and a low-temperature average of 48.6°F (9.2°C), is the warmest month.

What are the temperatures in August?

In August, in Piedmont, the average high-temperature is 69.1°F (20.6°C), and the average low-temperature is 48.6°F (9.2°C).

What is the least humid month?

The months with the lowest humidity in Piedmont are July and August, with an average relative humidity of 76%.

What is the average humidity in August?

In August, the average relative humidity in Piedmont is 76%.

What is the driest month?

July and August are months with the least rain when the rain falls for 5.4 days and typically aggregates up to 0.43" (11mm) of rain.

How much does it rain in August?

In Piedmont, during August, the rain falls for 5.4 days and regularly aggregates up to 0.43" (11mm) of precipitation.

When it does not snow?

In Piedmont, snow does not fall in May through October.

What is the average length of the day in August?

In August, the average day length is 14h and 14min.

What time are sunrise and sunset in August?

In August, on the first day of the month, sunrise is at 5:52 am and sunset at 8:50 pm. On the last day of the month, in Piedmont, sunrise is at 6:32 am and sunset at 7:57 pm PDT.

What is the month with the most sunshine?

The months with the most sunshine are July and August, with an average of 10.4h of sunshine.

How many hours of sunshine does Piedmont have in August?

The average sunshine duration in August is 10.4h.

What are the months with the highest UV index?

June through August, with an average maximum UV index of 4, are months with the highest UV index.

How high is the UV index in August?

The average daily maximum UV index in August is 4. A UV Index estimate of 3 to 5 represents a medium health risk 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
Piedmont, WA

Average temperature in August - Piedmont, WA
  • Average high temperature in August: 69.1°F

The warmest month (with the highest average high temperature) is August (69.1°F).
The month with the lowest average high temperature is December (39.4°F).

  • Average low temperature in August: 48.6°F

The month with the highest average low temperature is August (48.6°F).
The coldest months (with the lowest average low temperature) are February and December (31.5°F).

Average pressure in August
Piedmont, WA

Average pressure in August - Piedmont, WA
  • Average pressure in August: 30.03"Hg

The month with the highest atmospheric pressure is July (30.07"Hg).
The month with the lowest atmospheric pressure is March (29.99"Hg).

Average wind speed in August
Piedmont, WA

Average wind speed in August - Piedmont, WA
  • Average wind speed in August: 3.5mph

The windiest months (with the highest average wind speed) are January and November (5.2mph).
The calmest months (with the lowest average wind speed) are August and September (3.5mph).

Average humidity in August
Piedmont, WA

Average humidity in August - Piedmont, WA
  • Average humidity in August: 76%

The months with the highest relative humidity are January and December (89%).
The months with the lowest relative humidity are July and August (76%).

Average rainfall in August
Piedmont, WA

Average rainfall in August - Piedmont, WA
  • Average rainfall in August: 0.43"

The wettest month (with the highest rainfall) is January (3.35").
The driest months (with the least rainfall) are July and August (0.43").

Average rainfall days in August
Piedmont, WA

Average rainfall days in August - Piedmont, WA
  • Average rainfall days in August: 5.4 days

The month with the highest number of rainy days is March (16.1 days).
The month with the least rainy days is August (5.4 days).

Average snowfall in August
Piedmont, WA

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

The month with the highest snowfall is February (4.53").
The months with the least snowfall are May, June, July, August, September and October (0").

Average snowfall days in August
Piedmont, WA

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

The month with the highest number of snowfall days is February (7.2 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

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

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

The month with the longest days is June (Average daylight: 16h and 0min).
The month with the shortest days is December (Average daylight: 8h and 24min).

  • Average sunshine in August: 10h and 2min

The months with the most sunshine are July and August (Average sunshine: 10h and 24min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).

Average sunshine days in August
Piedmont, WA

Average sunshine days in August - Piedmont, WA
  • Average sunshine days in August: 22.5 days

The month with the most sunshine days is August (22.5 days).
The month with the least sunshine days is February (9.6 days).

Average UV index in August
Piedmont, WA

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

The months with the highest UV index are June, July and August (UV index 4).
The months with the lowest UV index are January, February, March, November and December (UV index 2).

Average cloud cover in August
Piedmont, WA

Average cloud cover in August - Piedmont, WA
  • Average cloud cover in August: 28

The month with the most cloud cover is February (Cloud cover 62).
The month with the least cloud cover is August (Cloud cover 28).

Average visibility in August
Piedmont, WA

Average visibility in August - Piedmont, WA
  • Average visibility in August: 5mi

The months with the highest visibility are April, May, June, July, August, September, October and November (5mi).
The months with the lowest visibility are January, February, March and December (4mi).

Piedmont, Washington, USA

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