Seattle (WA) Rainfall by Month – Average Precipitation Seattle experiences significant rain snowfall throughout the year, averaging 1009 mm of precipitation annually However, this abundant rainfall is not evenly distributed, with a distinct dry season during certain months You can clearly see this in our monthly precipitation graphs below
Rain Stats - Seattle Weather Blog Seattle averages 39 34 inches of precipitation a year, with the vast majority falling as rain instead of snow Official precipitation totals for the city are measured at Sea-Tac Airport, which is actually located south of the Seattle city limits
National Weather Service THE SEATTLE WA WFO CLIMATE SUMMARY FOR THE MONTH OF MAY 2026 CLIMATE NORMAL PERIOD 1991 TO 2020 CLIMATE RECORD PERIOD 1894 TO 2026 WEATHER OBSERVED NORMAL DEPART LAST YEAR`S VALUE DATE (S) VALUE FROM VALUE DATE (S) NORMAL
Climate of Seattle - Wikipedia In an average year, at least 0 01 inches (0 25 mm) of precipitation falls on 150 days, more than nearly all U S cities east of the Rocky Mountains In November, Seattle averages more rainfall than any other U S city of more than 250,000 people; it also ranks highly in winter precipitation
Yearly Monthly weather - Seattle, WA Seattle, Washington, USA - Climate and weather forecast by month Detailed climate information with charts - average monthly weather with temperature, pressure, humidity, precipitation, wind, daylight, sunshine, visibility, and UV index data Remarkably, despite being in a region known for its rainfall, the city observes just under nine days of rainfall on average per month, with the highest
Seattle, WA - ClimateStations. com Graphical Climatology of Seattle: Daily Temperatures and Rainfall, by Year (1945 – Present) The following is a graphical climatology of Seattle, Washington (Seattle-Tacoma Int’l Airport) temperatures, precipitation, and various other parameters, from 1945 into 2026
Seattle Precipitation Humidity by Month | Rain Snow Averages This chart shows the monthly average precipitation in Seattle, United States, based on ERA5 data spanning 2000 to 2025 The stacked bars represent total precipitation distributed between rain and snow
Total Precipitation - Seattle Climate Data Analyze Seattle's precipitation patterns and trends from 1978 to present View monthly and yearly rainfall data, historical precipitation records, and climate change effects on Seattle's weather patterns