Contents
- Weather in August
- Frequently asked questions
- Average temperature in August
- Average pressure in August
- Average wind speed in August
- Average humidity in August
- Average rainfall in August
- Average rainfall days in August
- Average snowfall in August
- Average snowfall days in August
- Average daylight in August
- Average sunshine in August
- Average sunshine days in August
- Average UV index in August
- Average cloud cover in August
- Average visibility in August
Weather in August
Temperature
August is the warmest month, exhibiting average temperatures of 77.5°F (25.3°C) at the peak and 52.9°F (11.6°C) at the base.Humidity
The average relative humidity in August is 69%.Rainfall
In Federal Way, during August, the rain falls for 5.9 days and regularly aggregates up to 0.63" (16mm) of precipitation. Throughout the year, there are 177.2 rainfall days, and 30.79" (782mm) of precipitation is accumulated.Snowfall
In Federal Way, Washington, snow does not fall in May through October.Daylight
The average length of the day in August is 14h and 11min.On the first day of August, sunrise is at 5:48 am and sunset at 8:42 pm. On the last day of the month, sunrise is at 6:28 am and sunset at 7:50 pm PDT.
Sunshine
With an average of 10.9h of sunshine, August has the most sunshine of the year in Federal Way.UV index
The average daily maximum UV index in August is 4. A UV Index reading of 3 to 5 represents a medium vulnerability from unsafe exposure to UV radiation for the average person.Note: The maximum UV index of 4 during August translates into these guidelines:
Ensure safety - Recommendations to avert sunburn are presented. Around midday, solar radiation is most harmful; hence, exposure should be limited. Outfit yourself in sun-safe attire, like long sleeves, pants, a hat, and UV-blocking sunglasses.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the hottest time of year?
What are August temperatures?
What is the average humidity in August?
How much does it rain in August?
When it does not snow?
What is the average length of the day in August?
When is the sunrise / sunset in August?
What month has the most sunshine?
How many hours of sunshine does Federal Way have in August?
How high is the UV index in August?
Average temperature in August
Federal Way, WA
- Average high temperature in August: 77.5°F
The warmest month (with the highest average high temperature) is August (77.5°F).
The month with the lowest average high temperature is December (42.6°F).
- Average low temperature in August: 52.9°F
The month with the highest average low temperature is August (52.9°F).
The coldest month (with the lowest average low temperature) is December (34.2°F).
Average pressure in August
Federal Way, WA
- Average pressure in August: 30.01"Hg
The month with the highest atmospheric pressure is January (30.1"Hg).
The months with the lowest atmospheric pressure are March, August and September (30.01"Hg).
Average wind speed in August
Federal Way, WA
- Average wind speed in August: 3.5mph
The windiest month (with the highest average wind speed) is March (5.1mph).
The calmest months (with the lowest average wind speed) are July and August (3.5mph).
Average humidity in August
Federal Way, WA
- Average humidity in August: 69%
The months with the highest relative humidity are January and December (86%).
The month with the lowest relative humidity is July (68%).
Average rainfall in August
Federal Way, WA
- Average rainfall in August: 0.63"
The wettest month (with the highest rainfall) is December (4.72").
The driest month (with the least rainfall) is July (0.43").
Average rainfall days in August
Federal Way, WA
- Average rainfall days in August: 5.9 days
The month with the highest number of rainy days is March (20 days).
The month with the least rainy days is August (5.9 days).
Average snowfall in August
Federal Way, WA
- Average snowfall in August: 0"
The month with the highest snowfall is February (3.27").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in August
Federal Way, WA
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is February (4.4 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
Federal Way, 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 5min
The month with the most sunshine is August (Average sunshine: 10h and 54min).
The month with the least sunshine is December (Average sunshine: 4h and 12min).
Average sunshine days in August
Federal Way, WA
- Average sunshine days in August: 22.8 days
The month with the most sunshine days is August (22.8 days).
The months with the least sunshine days are February and November (8.5 days).
Average UV index in August
Federal Way, 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).
Average cloud cover in August
Federal Way, WA
- Average cloud cover in August: 25
The month with the most cloud cover is December (Cloud cover 57).
The month with the least cloud cover is August (Cloud cover 25).
Average visibility in August
Federal Way, WA
- Average visibility in August: 6mi
The months with the highest visibility are June, July, August and September (6mi).
The months with the lowest visibility are January, February, March, April, May, October, November and December (5mi).
Federal Way, Washington, USA
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