What is the average temperature in seattle washington




















Reviews for Seattle Reviews. Great and beautiful place to live, but expensive. I spent 57 years there before moving to the other side of the country.

There is no income tax. It is surrounded by nature, including mountains and Read More. Agree 77 Disagree Bob Reply 1 Reply. Agree Disagree I can't believe Best Places lists the cost of living as it does. I consulted this site before moving there 18 months ago from Vancouver, WA. Try Now. All rights reserved. BestPlaces Mobile App. July High. UV Index. Based on this score, the best time of year to visit Seattle for general outdoor tourist activities is from early July to late August , with a peak score in the first week of August.

Based on this score, the best time of year to visit Seattle for hot-weather activities is from mid July to mid August , with a peak score in the first week of August. For each hour between AM and PM of each day in the analysis period to , independent scores are computed for perceived temperature, cloud cover, and total precipitation.

Those scores are combined into a single hourly composite score, which is then aggregated into days, averaged over all the years in the analysis period, and smoothed. Our cloud cover score is 10 for fully clear skies, falling linearly to 9 for mostly clear skies, and to 1 for fully overcast skies.

Our precipitation score , which is based on the three-hour precipitation centered on the hour in question, is 10 for no precipitation, falling linearly to 9 for trace precipitation, and to 0 for 0. The growing season in Seattle typically lasts for 9. Growing degree days are a measure of yearly heat accumulation used to predict plant and animal development, and defined as the integral of warmth above a base temperature, discarding any excess above a maximum temperature.

Based on growing degree days alone, the first spring blooms in Seattle should appear around April 8 , only rarely appearing before March 16 or after April This section discusses the total daily incident shortwave solar energy reaching the surface of the ground over a wide area, taking full account of seasonal variations in the length of the day, the elevation of the Sun above the horizon, and absorption by clouds and other atmospheric constituents. Shortwave radiation includes visible light and ultraviolet radiation.

The average daily incident shortwave solar energy experiences extreme seasonal variation over the course of the year. The brighter period of the year lasts for 3. The brightest month of the year in Seattle is July , with an average of 6. The darker period of the year lasts for 3. The darkest month of the year in Seattle is December , with an average of 0. For the purposes of this report, the geographical coordinates of Seattle are The topography within 2 miles of Seattle contains only modest variations in elevation, with a maximum elevation change of feet and an average elevation above sea level of feet.

Within 10 miles contains only modest variations in elevation 1, feet. Within 50 miles contains very significant variations in elevation 7, feet.

This report illustrates the typical weather in Seattle, based on a statistical analysis of historical hourly weather reports and model reconstructions from January 1, to December 31, There are 3 weather stations near enough to contribute to our estimation of the temperature and dew point in Seattle. For each station, the records are corrected for the elevation difference between that station and Seattle according to the International Standard Atmosphere , and by the relative change present in the MERRA-2 satellite-era reanalysis between the two locations.

The estimated value at Seattle is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between Seattle and a given station. To get a sense of how much these sources agree with each other, you can view a comparison of Seattle and the stations that contribute to our estimates of its temperature history and climate. Please note that each source's contribution is adjusted for elevation and the relative change present in the MERRA-2 data.

All data relating to the Sun's position e. This reanalysis combines a variety of wide-area measurements in a state-of-the-art global meteorological model to reconstruct the hourly history of weather throughout the world on a kilometer grid.

Names, locations, and time zones of places and some airports come from the GeoNames Geographical Database. Time zones for airports and weather stations are provided by AskGeo. The information on this site is provided as is, without any assurances as to its accuracy or suitability for any purpose. Weather data is prone to errors, outages, and other defects. We assume no responsibility for any decisions made on the basis of the content presented on this site.

We draw particular cautious attention to our reliance on the MERRA-2 model-based reconstructions for a number of important data series. While having the tremendous advantages of temporal and spatial completeness, these reconstructions: 1 are based on computer models that may have model-based errors, 2 are coarsely sampled on a 50 km grid and are therefore unable to reconstruct the local variations of many microclimates, and 3 have particular difficulty with the weather in some coastal areas, especially small islands.

We further caution that our travel scores are only as good as the data that underpin them, that weather conditions at any given location and time are unpredictable and variable, and that the definition of the scores reflects a particular set of preferences that may not agree with those of any particular reader. Please review our full terms contained on our Terms of Service page.

You're permitted to use this graph as long as you provide prominent attribution with a link back close to the use of the graph. For print usage, please acquire a license.

Full Year. Spring Summer Fall Winter. Climate in Seattle Link. History: Seattle weather by month. Click on each chart for more information. The daily average high red line and low blue line temperature, with 25th to 75th and 10th to 90th percentile bands. The thin dotted lines are the corresponding average perceived temperatures. August is the warmest month, with an average high-temperature of Weather in August ». The first month of the autumn, September , is also an agreeable month in Seattle , Washington , with average temperature ranging between max In Seattle, the average high-temperature in September marginally drops, from a warm Weather in September ».

October , like September , is another mild autumn month in Seattle , Washington , with average temperature fluctuating between In October, the average high-temperature decreases, from an agreeable Weather in October ».

November , the last month of the autumn, in Seattle , is another chilly month, with average temperature varying between In November, the average high-temperature drops, from a mild Weather in November ».

December , the first month of the winter, in Seattle , is also a frosty month, with temperature in the range of an average low of The coldest month is December, with an average high-temperature of Weather in December ». FAQ What is the most humid month in Seattle?

How many days does it rain in Seattle? In Seattle, Washington, during the entire year, the rain falls for When does it snow in Seattle? January through March and November are months with snowfall in Seattle. How much does it snow in Seattle? In Seattle, during the entire year, snow falls for 4.

What is the month with the lowest UV index in Seattle? What is the snowiest month in Seattle? The month with the most snowfall is February when snow falls for 1.

When is the ocean coldest in Seattle? The month with the coldest seawater in Seattle is February , with an average ocean temperature of When it does not snow in Seattle? In Seattle snow does not fall in April through October and December. When are the longest days in Seattle? The month with the longest days in Seattle, Washington, is June , with an average of What is the least humid month in Seattle? What is the driest month in Seattle? July and August are months with the least rain in Seattle, Washington, when the rain falls for 4.

When is the highest UV index in Seattle? What is the warmest month in Seattle? August is the warmest month in Seattle, with an average high-temperature of What month is the ocean warmest in Seattle?

August is the month with the warmest seawater in Seattle, with an average ocean temperature of What month has the most sunshine in Seattle? The month with the most sunshine in Seattle, Washington, is August , with an average of What is the coldest month in Seattle? The coldest month in Seattle is December , with an average high-temperature of What is the wettest month in Seattle? December is the month with the most rainfall in Seattle.



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