August weather forecast
Onion Creek, WA

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Weather in August

The last month of the summer, August, is another warm month in Onion Creek, Washington, with an average temperature varying between 81.1°F (27.3°C) and 50.5°F (10.3°C).

Temperature

August, marked by an average high-temperature of 81.1°F (27.3°C) and a low-temperature of 50.5°F (10.3°C), is the warmest month.

Heat index

During August, the heat index is calculated to be 82.4°F (28°C). Uninterrupted exposure and activity might result in fatigue, potentially causing heat cramps.
Heat index specifics point out values are for conditions of shade and a slight breeze. Exposure to the sun directly might heighten the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'real feel', gauges the sensation of temperature factoring in the air's moisture content. Physical activity, clothing, and metabolic variations are additional factors that impact an individual's perception of temperature. The sun, when shining directly, can have a significant impact on the perceived temperature, increasing the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold great significance to children. Younglings frequently fail to recognize the requirement to rest and rehydrate. Thirst emerges late in dehydration - it is imperative to keep hydration levels high, particularly during extended physical exertions.

Humidity

The least humid month is August, with an average relative humidity of 50%.

Rainfall

The month with the least rainfall is August, when the rain falls for 6.1 days and typically collects 0.39" (10mm) of precipitation.

Snowfall

In Onion Creek, snow does not fall in May through August.

Daylight

In Onion Creek, the average length of the day in August is 14h and 18min.
On the first day of August in Onion Creek, sunrise is at 5:26 am and sunset at 8:28 pm. On the last day of the month, sunrise is at 6:07 am and sunset at 7:34 pm PDT.

Sunshine

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

UV index

The average daily maximum UV index in August is 4. A UV Index estimate of 3 to 5 represents a medium health hazard from unsafe exposure to UV radiation for the average person.
Note: In August, a regular UV index of 4 translates into these guidelines:
Preventative actions are necessary - Recommendations to ward off sunburn are given. It's crucial to reduce time in the direct Sun around mid-day due to the intense solar radiation. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration.
Updated: Feb 14, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What month is the hottest in Onion Creek?

Onion Creek's warmest month, August, generally records average temperatures ranging from a high of 81.1°F (27.3°C) to a low of 50.5°F (10.3°C).

What are the temperatures in Onion Creek in August?

Onion Creek in August has an average high-temperature of 81.1°F (27.3°C) and an average low-temperature of 50.5°F (10.3°C). The average heat index (a.k.a. 'real feel', 'felt air temperature'), which factors the actual air temperature with the relative humidity, in August is calculated to be 82.4°F (28°C).

What is the least humid month in Onion Creek?

With an average relative humidity of 50%, August is the least humid month in Onion Creek, Washington.

What is the average humidity in August in Onion Creek?

In Onion Creek, Washington, the average relative humidity in August is 50%.

What is the driest month in Onion Creek?

The month with the least rainfall is August, when the rain falls for 6.1 days and typically collects 0.39" (10mm) of precipitation.

How much does it rain in Onion Creek in August?

In August, the rain falls for 6.1 days. Throughout August, 0.39" (10mm) of precipitation is accumulated.

When it does not snow in Onion Creek?

In Onion Creek, Washington, snow does not fall in May through August.

Does it snow in Onion Creek in August?

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

How many hours of daylight does Onion Creek have in August?

The average day length in August in Onion Creek is 14h and 18min.

When are sunrise and sunset in August in Onion Creek?

On the first day of August, sunrise is at 5:26 am and sunset at 8:28 pm. On the last day of the month, sunrise is at 6:07 am and sunset at 7:34 pm PDT.

What month has the most sunshine in Onion Creek?

August has the most sunshine of the year in Onion Creek, with an average of 12h of sunshine.

How long on average sun shines in August in Onion Creek?

In Onion Creek, the average sunshine duration in August is 12h.

How high is the UV index in August in Onion Creek?

The average daily maximum UV index in August in Onion Creek, Washington, is 4. A UV Index of 3 to 5 symbolizes a moderate vulnerability from exposure to the Sun's 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
Onion Creek, WA

Average temperature in August - Onion Creek, WA
  • Average high temperature in August: 81.1°F

The warmest month (with the highest average high temperature) is August (81.1°F).
The month with the lowest average high temperature is December (28.9°F).

  • Average low temperature in August: 50.5°F

The month with the highest average low temperature is August (50.5°F).
The coldest month (with the lowest average low temperature) is February (16°F).

Average pressure in August
Onion Creek, WA

Average pressure in August - Onion Creek, WA
  • Average pressure in August: 29.92"Hg

The month with the highest atmospheric pressure is January (30.19"Hg).
The months with the lowest atmospheric pressure are June and August (29.92"Hg).

Average wind speed in August
Onion Creek, WA

Average wind speed in August - Onion Creek, WA
  • Average wind speed in August: 3.4mph

The windiest month (with the highest average wind speed) is April (3.9mph).
The calmest months (with the lowest average wind speed) are January, February and December (3mph).

Average humidity in August
Onion Creek, WA

Average humidity in August - Onion Creek, WA
  • Average humidity in August: 50%

The month with the highest relative humidity is January (94%).
The month with the lowest relative humidity is August (50%).

Average rainfall in August
Onion Creek, WA

Average rainfall in August - Onion Creek, WA
  • Average rainfall in August: 0.39"

The wettest month (with the highest rainfall) is May (1.93").
The driest month (with the least rainfall) is August (0.39").

Average rainfall days in August
Onion Creek, WA

Average rainfall days in August - Onion Creek, WA
  • Average rainfall days in August: 6.1 days

The month with the highest number of rainy days is March (18.4 days).
The month with the least rainy days is August (6.1 days).

Average snowfall in August
Onion Creek, WA

Average snowfall in August - Onion Creek, WA
  • Average snowfall in August: 0"

The month with the highest snowfall is January (6.61").
The months with the least snowfall are May, June, July and August (0").

Average snowfall days in August
Onion Creek, WA

Average snowfall days in August - Onion Creek, WA
  • Average snowfall days in August: 0 days

The month with the highest number of snowfall days is December (13.7 days).
The months with the least snowfall days are May, June, July and August (0 days).

Average daylight in August /
Average sunshine in August
Onion Creek, WA

Average daylight in August / Average sunshine in August - Onion Creek, WA
  • Average daylight in August: 14h and 2min

The month with the longest days is June (Average daylight: 16h and 6min).
The month with the shortest days is December (Average daylight: 8h and 18min).

  • Average sunshine in August: 12h and 0min

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

Average sunshine days in August
Onion Creek, WA

Average sunshine days in August - Onion Creek, WA
  • Average sunshine days in August: 20.8 days

The month with the most sunshine days is August (20.8 days).
The month with the least sunshine days is March (9 days).

Average UV index in August
Onion Creek, WA

Average UV index in August - Onion Creek, 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 1).

Average cloud cover in August
Onion Creek, WA

Average cloud cover in August - Onion Creek, WA
  • Average cloud cover in August: 14

The month with the most cloud cover is January (Cloud cover 60).
The month with the least cloud cover is August (Cloud cover 14).

Average visibility in August
Onion Creek, WA

Average visibility in August - Onion Creek, WA
  • Average visibility in August: 6mi

The months with the highest visibility are May, June, July, August and September (6mi).
The month with the lowest visibility is January (2mi).

Onion Creek, Washington, USA

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