August weather forecastWest Lake Sammamish, WA
August
Weather in August
August, the last month of the summer in West Lake Sammamish, is also a moderately hot month, with an average temperature fluctuating between 52.2°F (11.2°C) and 76.5°F (24.7°C).Temperature
August, marked by an average high-temperature of 76.5°F (24.7°C) and a low-temperature of 52.2°F (11.2°C), is the warmest month.Humidity
In West Lake Sammamish, the average relative humidity in August is 71%.Rainfall
July and August are months with the least rain in West Lake Sammamish when the rain falls for 5.2 days and typically aggregates up to 0.35" (9mm) of rain.Snowfall
May through October are months without snowfall.Daylight
In West Lake Sammamish, the average length of the day in August is 14h and 12min.On the first day of the month, sunrise is at 5:47 am and sunset at 8:42 pm. On the last day of August, sunrise is at 6:26 am and sunset at 7:50 pm PDT.
Sunshine
The month with the most sunshine is August, with an average of 10.7h of sunshine.UV index
In West Lake Sammamish, the average daily maximum UV index in August is 4. A UV Index of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV radiation for the average person.Note: A maximum high UV index of 4 in August translates into the following recommendations:
Exercise prudence. Persons with fair skin could be burned in under 30 minutes. Midday Sun has the strongest UV rays, making it crucial to limit exposure and find shade. Enhance your sun protection with tightly woven, yet airy clothing.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in August
West Lake Sammamish, WA
- Average high temperature in August: 76.5°F
The warmest month (with the highest average high temperature) is August (76.5°F).
The month with the lowest average high temperature is December (42.3°F).
- Average low temperature in August: 52.2°F
The month with the highest average low temperature is August (52.2°F).
The coldest month (with the lowest average low temperature) is December (33.6°F).
Average pressure in August
West Lake Sammamish, 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).
Average wind speed in August
West Lake Sammamish, WA
- Average wind speed in August: 3.4mph
The windiest month (with the highest average wind speed) is January (5mph).
The calmest month (with the lowest average wind speed) is August (3.4mph).
Average humidity in August
West Lake Sammamish, WA
- Average humidity in August: 71%
The months with the highest relative humidity are January, February and December (85%).
The month with the lowest relative humidity is July (70%).
Average rainfall in August
West Lake Sammamish, WA
- Average rainfall in August: 0.35"
The wettest month (with the highest rainfall) is December (1.85").
The driest months (with the least rainfall) are July and August (0.35").
Average rainfall days in August
West Lake Sammamish, WA
- Average rainfall days in August: 5.2 days
The month with the highest number of rainy days is March (14.8 days).
The month with the least rainy days is August (5.2 days).
Average snowfall in August
West Lake Sammamish, WA
- Average snowfall in August: 0"
The month with the highest snowfall is February (1.38").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in August
West Lake Sammamish, 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 and October (0 days).
Average daylight in August /
Average sunshine in August
West Lake Sammamish, WA
- Average daylight in August: 14h and 12min
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 42min
The month with the most sunshine is August (Average sunshine: 10h and 42min).
The months with the least sunshine are January and December (Average sunshine: 4h and 12min).
Average sunshine days in August
West Lake Sammamish, WA
- Average sunshine days in August: 24 days
The month with the most sunshine days is August (24 days).
The month with the least sunshine days is November (13.5 days).
Average UV index in August
West Lake Sammamish, WA
- Average UV index in August: 4
The months with the highest UV index are June and July (UV index 5).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in August
West Lake Sammamish, WA
- Average cloud cover in August: 26
The month with the most cloud cover is December (Cloud cover 57).
The month with the least cloud cover is August (Cloud cover 26).
Average visibility in August
West Lake Sammamish, 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).
