Daylight hours are increasing each day and the sun comes out more. While the rest of this great nation flings off clothing and slathers sunscreen and fires up the grill, the Northwest wet season casts its final lingering shadow over the region. Land Use data comes from the Global Land Cover SHARE database , published by the Food and Agriculture Organization of the United Nations. The percentage of time spent in each cloud cover band, categorized by the percentage of the sky covered by clouds. The safest way to know if it’s going to rain the day you want to do something outdoors is to check the forecast that morning. The calmer time of year lasts for 5.7 months, from April 24 to October 15. To show variation within the months and not just the monthly totals, we show the rainfall accumulated over a sliding 31-day period centered around each day of the year. The warmest month of the year is August, with an average temperature of 19.3 °C | 66.7 °F. We base the humidity comfort level on the dew point, as it determines whether perspiration will evaporate from the skin, thereby cooling the body. The time in which the moon is above the horizon (light blue area), with new moons (dark gray lines) and full moons (blue lines) indicated. The average liquid-equivalent snowfall (solid line) accumulated over the course of a sliding 31-day period centered on the day in question, with 25th to 75th and 10th to 90th percentile bands. In fact, many years, Seattle summers offer some of the best weather in the country. Forecast - Seattle. Seattle has a temperate climate without harsh cold winters, and without extreme heat in the summers. The area within 2 miles of Seattle is covered by artificial surfaces (69%) and water (31%), within 10 miles by artificial surfaces (47%) and water (40%), and within 50 miles by trees (52%) and water (14%). Bring shoes that can handle stepping in puddles and leave mesh tennis shoes at home (rain goes right through them). While the temperatures aren’t frigid and rarely dip below freezing, the rain is fairly constant. 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. The black line is the percentage chance that a given day is within the growing season. Within 10 miles contains only modest variations in elevation (1,171 feet). The shaded overlays indicate night and civil twilight. With pleasant weather and affordable prices, September and early October are the best time to visit Seattle. The climate guide for Seattle, Washington State shows long term monthly weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Averages are for Seattle Boeing Field, which is 7 miles from Seattle. 61° 44° 27. The city averages only two days a year of temperatures in the 90s Fahrenheit and normally doesn't get any hotter than 100. All other weather data, including cloud cover, precipitation, wind speed and direction, and solar flux, come from NASA's MERRA-2 Modern-Era Retrospective Analysis . The weather in Seattle in the month of may comes from statistical datas on the last years. The day of the year with the coolest water is February 11, with an average temperature of 46°F. From bottom (most yellow) to top (most gray), the color bands indicate: full daylight, twilight (civil, nautical, and astronomical), and full night. Days of Hot Weather in Seattle Sweltering weather is a rarity in Seattle. The figure below presents a compact representation of key lunar data for 2021. The daily average high (red line) and low (blue line) temperature, with 25th to 75th and 10th to 90th percentile bands. Seattle experienes warm summers and mild winters. In general, the best months to visit Seattle are July and August if you want to avoid chances of rain or cloudy, cool days, and you want to maximize your time in Seattle’s beautiful outdoor places. The least rain falls around July 30, with an average total accumulation of 0.6 inches. 30 years of hourly historical weather data for Seattle can be purchased with history+. A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. You’re just likely to get rained on a lot., • Hottest Month: August (73 F average high)• Coldest Month: January (45 F average high)• Wettest Month: December (5.43 inches on average). The predominant average hourly wind direction in Seattle varies throughout the year. Rain falls throughout the year in Seattle. Climate in Seattle, Washington Seattle, Washington gets 38 inches of rain, on average, per year. Weather data is prone to errors, outages, and other defects. The solar day over the course of the year 2021. June will break your heart, especially if you're from the East Coast, the Midwest, or — bless your heart — the South. June gloom, we call it. In fact, Seattle has not experienced an official sunny day since November 30. And don’t worry, there are lots of great things to do in Seattle year-round. The horizontal axis is the day of the year, the vertical axis is the hour of the day, and the color is the average temperature for that hour and day. Often as winter weather really starts to set in during November, Seattle can experience high winds of 40-50 mph or more for a few days. Based on the tourism score, the best time of year to visit Seattle for warm-weather activities is from early July to late August. At the same time, the climate is fairly temperate in Western Washington and even in the dead of winter, you’re unlikely to find truly cold weather. The perceived humidity level in Seattle, as measured by the percentage of time in which the humidity comfort level is muggy, oppressive, or miserable, does not vary significantly over the course of the year, remaining a virtually constant 0% throughout. Boots and long socks help make the rainy days more comfortable. Max/min temp. Swimming on beaches on local lakes is also probably a little too cold for most. The coldest day of the year is December 23, with an average low of 37°F and high of 46°F. Average Monthly Temperatures and Rainfall in Naples, Florida, Monthly Temperatures and Rainfall Totals for Ocala, Florida, The Weather and Climate in Turks and Caicos, Weather in Mexico City: Climate, Seasons, and Average Monthly Temperature, Weather in Lakeland: Climate, Seasons, and Average Monthly Temperature, Everything to Know About the Weather and Climate in New York State, The Weather and Climate in Pensacola, Florida. Seattle, WA Weather History star_rate ... You are about to report this weather station for bad data. This report illustrates the typical weather in Seattle, based on a statistical analysis of historical hourly weather reports and model reconstructions from January 1, 1980 to December 31, 2016. The hottest day of the year is August 1, with an average high of 79°F and low of 59°F. The average hourly temperature, color coded into bands. Fall in Seattle. In 2021, the shortest day is December 21, with 8 hours, 26 minutes of daylight; the longest day is June 20, with 15 hours, 59 minutes of daylight. You can view the weather statistics the entire month, but also by using the tabs for the beginning, the middle and the end of the month. 25 59° 44° 26. Typically on 71 days a year the sky is mainly clear, with at most 30 percent cloud cover. … Fall in Seattle can vary quite a bit, just like spring. 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 wettest month is December with an average of 150mm of rain. Daffodils and cherry trees will be in bloom. Average High Temperatures and Rainfall by Month: Unless you’re out to ski or enjoy some winter sports, summer in Seattle is the perfect time to visit. The warm season lasts for 2.8 months, from June 21 to September 13, with an average daily high temperature above 72°F. Seattle, WA Weather. 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. Click on each chart for more information. Also bring along a light jacket or sweater and at least one pair of pants as evenings can be cool. It's not so much the rain that got to me, but the dark, cold, overcast gloom. Today. Hourly. The earliest sunrise is at 5:10 AM on June 16, and the latest sunrise is 2 hours, 51 minutes later at 8:01 AM on November 6. 's coldest month is January when the average temperature overnight is 36.0°F. 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 50-kilometer grid. The length of the day in Seattle varies significantly over the course of the year. What to Pack: Bring warm clothing and weatherproof outerwear. Once you arrive in Seattle you will want to visit one of its excellent … Winter in Seattle is not the best time to visit unless you’re here for winter sports. The information on this site is provided as is, without any assurances as to its accuracy or suitability for any purpose. Read our. Seattle experiences extreme seasonal variation in monthly rainfall. The figure below shows you a compact characterization of the entire year of hourly average temperatures. While many people think of Seattle as all rain, all the time, nothing could be further from the truth. The weather in Seattle in the month of march comes from statistical datas on the past years. And in general, avoid visiting in November, December and January if you really want to get out and enjoy the outdoors. The drier season lasts 5.4 months, from April 30 to October 10. Weather in Seattle in may 2021. Many of these events not only affect Washington, but impact other surrounding Pacific Northwest states. The weather alternates between overcast cooler days and warmer sunny days that hint at summer being just around the corner. … You’ll spot locals flocking to shorelines and parks on sunny days, glad for the nice weather after long, rainy winters! Her work has appeared in Travel + Leisure, USA Today 10Best, Michelin Guide, Hemispheres, DuJour, and Jetsetter. Last updated today at 09:04. The brightest day of the year is July 21, with an average of 6.7 kWh. We assume no responsibility for any decisions made on the basis of the content presented on this site. Monthly: 1981-2010 normals I lived in Seattle for about 3 years. The wetter season lasts 6.6 months, from October 10 to April 30, with a greater than 33% chance of a given day being a wet day. Nearby Nearby. Download variables like temperature, wind, clouds and precipitation as CSV for any place on Earth. Seattle Weather averages for holidays in 2021/2022. The growing season in Seattle typically lasts for 9.0 months (272 days), from around February 24 to around November 23, rarely starting before January 17 or after March 19, and rarely ending before November 1 or after December 17. However, it’s rarer in the fall that the rain lasts all day long (like it might in winter) so keep an eye out and take weather forecasts with a pinch of salt. Expect temperatures between 30 F and 90 F throughout the year with few exceptions. 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. The thin dotted lines are the corresponding average perceived temperatures. Sun mon tue wed thu fri sat. What to Pack: Pack summer clothing – short sleeves, shorts or capris, some sandals. Nights are equally moderate with minimum temperatures dropping below 70 °F. Nantes, France (4,986 miles away) is the far-away foreign place with temperatures most similar to Seattle (view comparison). The windier part of the year lasts for 6.3 months, from October 15 to April 24, with average wind speeds of more than 4.1 miles per hour. The average hourly wind speed in Seattle experiences mild seasonal variation over the course of the year. 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. Plan accordingly and have backup plans in case the weather goes south. The calmest day of the year is August 2, with an average hourly wind speed of 2.8 miles per hour. The cloudier part of the year begins around October 8 and lasts for 8.2 months, ending around June 13. What to Pack: Spring in Seattle is all about layers. Fall in Seattle can vary quite a bit, just like spring. Days are long with the sun rising before 6 a.m. and setting around 9 p.m. The transitions to and from daylight saving time are indicated by the 'DST' labels. Station Data. April marked the second consecutive month with drier-than-normal conditions in Seattle, following a very soggy start to the year. View. Seattle average temperature. The most rain falls during the 31 days centered around November 22, with an average total accumulation of 7.7 inches. Winter arrives in November and besides rain and show, brings deals for bargain lovers. Jun. Within 50 miles contains very significant variations in elevation (7,720 feet). Seattleites like to boast that their annual rainfall is actually less than that of many other places. What to Pack: Bring a light rain jacket and plan to dress in layers, the same as you might in spring. All data relating to the Sun's position (e.g., sunrise and sunset) are computed using astronomical formulas from the book, Astronomical Algorithms 2nd Edition , by Jean Meeus. The average daily shortwave solar energy reaching the ground per square meter (orange line), with 25th to 75th and 10th to 90th percentile bands. Seattle weather extremes help account for the fact that Washington State is one of the most frequent locations of Presidentially declared weather-realted disasters. December 2020. Expect high temps to be in the low 50s C, though it’s not uncommon for temps to creep up toward 60 on a sunny day. Night Morning Day Afternoon Evening. The sliding 31-day liquid-equivalent quantity of snowfall in Seattle does not vary significantly over the course of the year, staying within 0.1 inches of 0.1 inches throughout. 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. Based on weather reports collected during 1985–2015. Seattle-Tacoma's mild climate is influenced by the Cascade Mountains and to a lesser extent by the Olympic Mountains. Generally, people don’t swim in the Puget Sound around Seattle as the water stays pretty cold even on hot days, but you can dip your toes in at places like Golden Gardens Park. Pack a light rain jacket, a hoodie or fleece to wear under that if the weather is colder, and bring both long and short sleeves as you never know what the weather will be doing this time of year. The clearer part of the year in Seattle begins around June 13 and lasts for 3.8 months, ending around October 8. Seattle averages 5 inches of snow per year. Shortwave radiation includes visible light and ultraviolet radiation. Unlike temperature, which typically varies significantly between night and day, dew point tends to change more slowly, so while the temperature may drop at night, a muggy day is typically followed by a muggy night. Some years bring plenty of … Our beach/pool temperature score is 0 for perceived temperatures below 65°F, rising linearly to 9 for 75°F, to 10 for 82°F, falling linearly to 9 for 90°F, and to 1 for 100°F or hotter. The darkest day of the year is December 26, with an average of 0.9 kWh. US Climate Data. If that doesn’t bother you, then you’re in the right place. TripSavvy uses only high-quality, trusted sources, including peer-reviewed studies, to support the facts within our articles. The windiest day of the year is November 30, with an average hourly wind speed of 5.3 miles per hour. ... Day Selection. To characterize how pleasant the weather is in Seattle throughout the year, we compute two travel scores. Time zones for airports and weather stations are provided by AskGeo.com . On January 19, the cloudiest day of the year, the sky is overcast or mostly cloudy 72% of the time, and clear, mostly clear, or partly cloudy 28% of the time. Summer crowds disperse and there is no better time for riding Rocky Mountaineer Train. The last 2 weeks of past weather data for Seattle … 14. The brighter period of the year lasts for 3.3 months, from May 14 to August 23, with an average daily incident shortwave energy per square meter above 5.6 kWh. Spring is a lovely time to visit Seattle. The year's longest days in mid June last 15:59 from sunrise to sunset. Seattle, Washington Weather Records and Averages . Most pools in the area do open after Memorial Day, but unless they’re heated or indoors, you’ll need to be a bit intrepid to enjoy them. The average daily incident shortwave solar energy experiences extreme seasonal variation over the course of the year. 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. The thin dotted line is the corresponding average rainfall. The chance of a wet day peaks at 57% on November 18. Over the course of the year, the temperature typically varies from 37°F to 79°F and is rarely below 28°F or above 88°F. The wind is most often from the south for 9.5 months, from September 20 to July 3, with a peak percentage of 57% on January 1. Some years bring plenty of warm, sunny days, other years the fall is filled with cool, rainy days. In this report, we use a base of 50°F and a cap of 86°F. Seattle Weather Extremes The Past 100 Years. Station Data. It’s not impossible by any means to enjoy Seattle in the winter. On average, Seattle gets 38 inches of rain over 156 days throughout the year, and temperatures stay between 40 and 70 degrees Fahrenheit most of the time, depending on the season. support@__remove_this_part__weatherspark.com. There are 3 weather stations near enough to contribute to our estimation of the temperature and dew point in Seattle. That being said, because the temperatures in Seattle are rarely extreme, locals can, and do, go outdoors on hikes or walks or jogs anytime of year. Most rain in Seattle is seen in winter and on an annual base the city experiences a large amount of rainfall making it one of the wettest cities in the country. For each hour between 8:00 AM and 9:00 PM of each day in the analysis period (1980 to 2016), independent scores are computed for perceived temperature, cloud cover, and total precipitation. Seattle is generally quite temperate, with few days that are unbearably hot and few that are freezing cold. The vertical gray bars (new Moons) and blue bars (full Moons) indicate key Moon phases. 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. Monthly Weather- ... Calendar Year Picker. The percentage of days in which various types of precipitation are observed, excluding trace quantities: rain alone, snow alone, and mixed (both rain and snow fell in the same day). The time of year with warmer water lasts for 3.1 months, from June 24 to September 28, with an average temperature above 54°F. Monthly averages Seattle Longitude: -122.332, Latitude: 47.6062 Average weather Seattle, WA - 98164. Find out more about our data sources. The wind is most often from the north for 2.6 months, from July 3 to September 20, with a peak percentage of 46% on July 30. Forecast Forecast. Summary. Based on this categorization, the most common form of precipitation throughout the year is rain alone, with a peak probability of 56% on November 18. Weather forecast for the next 9 days. The darker period of the year lasts for 3.8 months, from October 26 to February 18, with an average daily incident shortwave energy per square meter below 2.1 kWh. Among wet days, we distinguish between those that experience rain alone, snow alone, or a mixture of the two. The average rainfall (solid line) accumulated over the course of a sliding 31-day period centered on the day in question, with 25th to 75th and 10th to 90th percentile bands. The topography within 2 miles of Seattle contains only modest variations in elevation, with a maximum elevation change of 449 feet and an average elevation above sea level of 135 feet. The wind experienced at any given location is highly dependent on local topography and other factors, and instantaneous wind speed and direction vary more widely than hourly averages. Seattle, USA: Annual Weather Averages July is the hottest month in Seattle with an average temperature of 18°C (64°F) and the coldest is January at 5°C (41°F) with the most daily sunshine hours at 10 in July. Daylight saving time (DST) is observed in Seattle during 2021, starting in the spring on March 14, lasting 7.8 months, and ending in the fall on November 7. The chance of wet days in Seattle varies significantly throughout the year. The cool season lasts for 3.6 months, from November 12 to March 1, with an average daily high temperature below 53°F. The average of mean hourly wind speeds (dark gray line), with 25th to 75th and 10th to 90th percentile bands. Weather in Seattle in march 2022. Check average temperature, sunshine & rainfall plus more in Seattle, Washington State Day by day forecast. Today, Sunny intervals and … In August, the warmest month, the average day time temperature rises to 74.9°F. The clearer part of the year in Seattle begins around June 13 and lasts for 3.8 months, ending around October 8.On August 3, the clearest day of the year, the sky is clear, mostly clear, or partly cloudy 75% of the time, and overcast or mostly cloudy … Our tourism temperature score is 0 for perceived temperatures below 50°F, rising linearly to 9 for 65°F, to 10 for 75°F, falling linearly to 9 for 80°F, and to 1 for 90°F or hotter. Weather warnings issued. From bottom to top, the black lines are the previous solar midnight, sunrise, solar noon, sunset, and the next solar midnight. "Climate Seattle - Washington." The beach/pool score favors clear, rainless days with perceived temperatures between 75°F and 90°F. The average growing degree days accumulated over the course of the year, with 25th to 75th and 10th to 90th percentile bands. Seattle C.O. Official precipitation totals for the city are measured at Sea-Tac Airport, which is actually located south of the Seattle city limits. The percentage of time spent at various humidity comfort levels, categorized by dew point. Showing: All Year January February March April May June July August September October November December For the purposes of this report, the geographical coordinates of Seattle are 47.606 deg latitude, -122.332 deg longitude, and 174 ft elevation. 10 Day. Seattle (/ s i ˈ æ t əl / see-AT-əl) is a seaport city on the West Coast of the United States.It is the seat of King County, Washington.With a 2019 population of 753,675, it is the largest city in both the state of Washington and the Pacific Northwest region of North America.The Seattle metropolitan area's population is 3.98 million, making it the 15th-largest in the United States. Sunlight in Seattle averages 12 hours and 14 minutes a day. It's If you'd like to swim, this is the time to do it. It’s true that Seattle does get pretty steady rain in the fall and winter (and sometimes in the spring), often the summers are warm and dry. This section reports on the wide-area average surface temperature of that water. Seattle Parks operates a few public pools and you can also swim at Lake Sammamish. It won’t be cold, but might be rainy and breezy. Year Selection. On August 3, the clearest day of the year, the sky is clear, mostly clear, or partly cloudy 75% of the time, and overcast or mostly cloudy 25% of the time. Seattle is located near a large body of water (e.g., ocean, sea, or large lake). 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. Monthly: 1981-2010 normals On average, Seattle records its first 70-degree day of the year on April 15, according to the National Weather Service. Weather in Seattle in March is a bit of a mixed bag. The thin dotted line is the corresponding average liquid-equivalent snowfall. The percentage of time spent in various temperature bands. December is the coldest month, with temperatures averaging 4.2 °C | 39.6 °F. No data recorded . Based on growing degree days alone, the first spring blooms in Seattle should appear around April 9, only rarely appearing before March 17 or after April 29. The number of hours during which the Sun is visible (black line). The horizontal axis is the day, the vertical axis is the hour of the day, and the colored areas indicate when the moon is above the horizon. Autumns and winters are colder and wetter than the spring and summer seasons, which see a lot of sunshine and dry days—sometimes even starting as early as February. The percentage of hours in which the mean wind direction is from each of the four cardinal wind directions, excluding hours in which the mean wind speed is less than. The crowds and lines tend to be a bit lighter than in July and August, but there are still plenty of festivals and events taking place. The summer-like temperatures are right on schedule for western Washington. The US average is 38 inches of rain per year. In Seattle, the average percentage of the sky covered by clouds experiences significant seasonal variation over the course of the year.. The shaded overlays indicate night and civil twilight. Radar Video. This section discusses the wide-area hourly average wind vector (speed and direction) at 10 meters above the ground.
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