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Weather in August in Seattle, Washington

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< August >
 
Normal Max/ High Temperature 23°C (74°F)
 
Average Temperature 19°C (66°F)
 
Min/ Low Temperature 14°C (57°F)
 
Normal Precipitation 31mm (1.2in)
Number of Wet Days (probability of rain on a day) 5 (16%)
Average Sunlight per day 08:05
Average Daylight per day 14:13
Sunny (Cloudy) Daylight Hours 58% (42%)
Sun altitude at solar noon on the 21st day.
54.3°


  • The average temperature in Seattle, Washington in August is somewhat warm at 18.7 °C (65.66 °F).
  • Afternoons can be fairly hot with average high temperatures reaching 23.4 °C (74.1 °F).
  • Overnight temperatures are generally mild with an average low of 14 °C (57.2 °F).
  • In August there is a range/ variation of diurnal average temperatures of 9.4 °C (16.9 °F).
  • The weather in August is dry with occasional rain. A mere 31mm (1.2in) of fluid is transfered during an average of 5 days.
  • In August the blue above Seattle, Washington is moderately sunny having on average a pleasing 8:05 of blazing sunlight per day.
  • The shortest day is 13:24 long and the longest day is 14:58 long with an average length of 14:13.
  • There are approximately 5:55 per day when bright sunshine is absent due to cloud, haze or the sun being too low on the horizon to register.
  • It is sunny approximately 57.7% of daylight hours and cloudy 42.3% of daylight hours.

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Weather Trend Graph for August in Seattle, Washington, Usa

Graph of weather in Seattle, Washington in August

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