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Average Weather in Woodway Washington, United States

In Woodway, the summers are short, warm, dry, and partly cloudy and the winters are very cold, wet, and mostly cloudy. Over the course of the year, the temperature typically varies from 38°F to 78°F and is rarely below 28°F or above 87°F.

Climate Summary

coldcoolcomfortablewarmcoolcoldJanFebMarAprMayJunJulAugSepOctNovDec75%75%29%29%overcastclearprecipitation: 7.5 inprecipitation: 7.5 in0.6 in0.6 inmuggy: 0%muggy: 0%0%0%drydrytourism score: 7.1tourism score: 7.10.10.1
Click on each chart for more information.

Based on the tourism score, the best time of year to visit Woodway for warm-weather activities is from mid July to late August.

Temperature

The warm season lasts for 2.8 months, from June 22 to September 14, with an average daily high temperature above 71°F. The hottest day of the year is August 3, with an average high of 78°F and low of 58°F.

The cool season lasts for 3.5 months, from November 13 to February 26, with an average daily high temperature below 52°F. The coldest day of the year is December 23, with an average low of 38°F and high of 46°F.

Average High and Low Temperature

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.

The figure below shows you a compact characterization of the entire year of hourly average temperatures. 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.

Average Hourly Temperature

Average Hourly Temperature in WoodwayJanFebMarAprMayJunJulAugSepOctNovDec12 AM4 AM8 AM12 PM4 PM8 PM12 AMvery coldvery coldcoldcoldcoolcomfortablewarm
The average hourly temperature, color coded into bands: frigid < 15°F < freezing < 32°F < very cold < 45°F < cold < 55°F < cool < 65°F < comfortable < 75°F < warm < 85°F < hot < 95°F < sweltering. The shaded overlays indicate night and civil twilight.

Nantes, France (4,977 miles away) is the far-away foreign place with temperatures most similar to Woodway (view comparison).

Clouds

In Woodway, the average percentage of the sky covered by clouds experiences significant seasonal variation over the course of the year.

The clearer part of the year in Woodway begins around June 13 and lasts for 3.8 months, ending around October 7. 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.

The cloudier part of the year begins around October 7 and lasts for 8.2 months, ending around June 13. On January 19, the cloudiest day of the year, the sky is overcast or mostly cloudy 71% of the time, and clear, mostly clear, or partly cloudy 29% of the time.

Cloud Cover Categories

Cloud Cover Categories in WoodwayclearercloudiercloudierJanFebMarAprMayJunJulAugSepOctNovDec0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%Aug 375%Aug 375%Jan 1929%Jan 1929%Jun 1352%Jun 1352%Oct 752%Oct 752%clearmostly clearpartly cloudymostly cloudyovercast
The percentage of time spent in each cloud cover band, categorized by the percentage of the sky covered by clouds: clear < 20% < mostly clear < 40% < partly cloudy < 60% < mostly cloudy < 80% < overcast.

Precipitation

A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. The chance of wet days in Woodway varies significantly throughout the year.

The wetter season lasts 6.6 months, from October 10 to April 28, with a greater than 33% chance of a given day being a wet day. The chance of a wet day peaks at 58% on November 18.

The drier season lasts 5.4 months, from April 28 to October 10. The smallest chance of a wet day is 8% on August 9.

Among wet days, we distinguish between those that experience rain alone, snow alone, or a mixture of the two. Based on this categorization, the most common form of precipitation throughout the year is rain alone, with a peak probability of 57% on November 18.

Daily Chance of Precipitation

Daily Chance of Precipitation in WoodwaywetwetdryJanFebMarAprMayJunJulAugSepOctNovDec0%10%20%30%40%50%60%70%80%90%100%Nov 1858%Nov 1858%Aug 98%Aug 98%Jan 148%Jan 148%Oct 1033%Oct 1033%Apr 2833%Apr 2833%rain
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).

Rainfall

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. Woodway experiences extreme seasonal variation in monthly rainfall.

Rain falls throughout the year in Woodway. The most rain falls during the 31 days centered around November 22, with an average total accumulation of 7.5 inches.

The least rain falls around July 30, with an average total accumulation of 0.6 inches.

Average Monthly Rainfall

Average Monthly Rainfall in WoodwayJanFebMarAprMayJunJulAugSepOctNovDec0 in2 in4 in6 in8 in10 in12 in14 inNov 227.5 inNov 227.5 inJul 300.6 inJul 300.6 in
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 thin dotted line is the corresponding average liquid-equivalent snowfall.

Snowfall

The sliding 31-day liquid-equivalent quantity of snowfall in Woodway does not vary significantly over the course of the year, staying within 0.1 inches of 0.1 inches throughout.

Average Liquid-Equivalent Monthly Snowfall

Average Liquid-Equivalent Monthly Snowfall in WoodwayJanFebMarAprMayJunJulAugSepOctNovDec0 in1 in2 in3 in4 in5 in6 in7 in8 inDec 300.1 inDec 300.1 inJul 120.0 inJul 120.0 inJan 150.1 inJan 150.1 in
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. The thin dotted line is the corresponding average rainfall.

Sun

The length of the day in Woodway varies extremely over the course of the year. In 2018, the shortest day is December 21, with 8 hours, 24 minutes of daylight; the longest day is June 21, with 16 hours, 1 minute of daylight.

Hours of Daylight and Twilight

The number of hours during which the Sun is visible (black line). From bottom (most yellow) to top (most gray), the color bands indicate: full daylight, twilight (civil, nautical, and astronomical), and full night.

The earliest sunrise is at 5:10 AM on June 16, and the latest sunrise is 2 hours, 48 minutes later at 7:58 AM on January 1. The earliest sunset is at 4:17 PM on December 11, and the latest sunset is 4 hours, 55 minutes later at 9:12 PM on June 26.

Daylight saving time (DST) is observed in Woodway during 2018, starting in the spring on March 11, lasting 7.8 months, and ending in the fall on November 4.

Sunrise & Sunset with Twilight and Daylight Saving Time

Sunrise & Sunset with Twilight and Daylight Saving Time in WoodwayJanFebMarAprMayJunJulAugSepOctNovDec12 AM2 AM4 AM6 AM8 AM10 AM12 PM2 PM4 PM6 PM8 PM10 PM12 AMJun 165:10 AMJun 165:10 AM9:12 PMJun 269:12 PMJun 26Dec 114:17 PMDec 114:17 PM7:58 AMJan 17:58 AMJan 1Mar 11DSTMar 11DSTDSTNov 4DSTNov 4daynightnightnightnightSolarMidnightSolarMidnightSolarNoonSunriseSunset
The solar day over the course of the year 2018. From bottom to top, the black lines are the previous solar midnight, sunrise, solar noon, sunset, and the next solar midnight. The day, twilights (civil, nautical, and astronomical), and night are indicated by the color bands from yellow to gray. The transitions to and from daylight saving time are indicated by the 'DST' labels.

Humidity

We base the humidity comfort level on the dew point, as it determines whether perspiration will evaporate from the skin, thereby cooling the body. Lower dew points feel drier and higher dew points feel more humid. 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.

The perceived humidity level in Woodway, 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.

Humidity Comfort Levels

Humidity Comfort Levels in WoodwayJanFebMarAprMayJunJulAugSepOctNovDec0%10%20%30%40%50%60%70%80%90%100%Feb 230%Feb 230%Jul 250%Jul 250%drydrycomfortablecomfortablehumidhumid
The percentage of time spent at various humidity comfort levels, categorized by dew point: dry < 55°F < comfortable < 60°F < humid < 65°F < muggy < 70°F < oppressive < 75°F < miserable.

Wind

This section discusses the wide-area hourly average wind vector (speed and direction) at 10 meters above the ground. 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.

The average hourly wind speed in Woodway experiences mild seasonal variation over the course of the year.

The windier part of the year lasts for 6.3 months, from October 15 to April 23, with average wind speeds of more than 3.9 miles per hour. The windiest day of the year is November 30, with an average hourly wind speed of 5.2 miles per hour.

The calmer time of year lasts for 5.7 months, from April 23 to October 15. The calmest day of the year is August 2, with an average hourly wind speed of 2.5 miles per hour.

Average Wind Speed

The average of mean hourly wind speeds (dark gray line), with 25th to 75th and 10th to 90th percentile bands.

The predominant average hourly wind direction in Woodway varies throughout the year.

The wind is most often from the north for 3.3 months, from June 18 to September 26, with a peak percentage of 51% on July 30. The wind is most often from the south for 8.7 months, from September 26 to June 18, with a peak percentage of 53% on January 1.

Wind Direction

Wind Direction in WoodwaySNSJanFebMarAprMayJunJulAugSepOctNovDec0%100%20%80%40%60%60%40%80%20%100%0%westsoutheastnorth
The percentage of hours in which the mean wind direction is from each of the four cardinal wind directions (north, east, south, and west), excluding hours in which the mean wind speed is less than 1 mph. The lightly tinted areas at the boundaries are the percentage of hours spent in the implied intermediate directions (northeast, southeast, southwest, and northwest).

Water Temperature

Woodway is located near a large body of water (e.g., ocean, sea, or large lake). This section reports on the wide-area average surface temperature of that water.

The average water temperature experiences some seasonal variation over the course of the year.

The time of year with warmer water lasts for 3.1 months, from June 24 to September 27, with an average temperature above 54°F. The day of the year with the warmest water is August 15, with an average temperature of 56°F.

The time of year with cooler water lasts for 4.0 months, from December 9 to April 10, with an average temperature below 48°F. The day of the year with the coolest water is February 11, with an average temperature of 46°F.

Average Water Temperature

The daily average water temperature (purple line), with 25th to 75th and 10th to 90th percentile bands.

Best Time of Year to Visit

To characterize how pleasant the weather is in Woodway throughout the year, we compute two travel scores.

The tourism score favors clear, rainless days with perceived temperatures between 65°F and 80°F. Based on this score, the best time of year to visit Woodway for general outdoor tourist activities is from mid July to late August, with a peak score in the first week of August.

Tourism Score

Tourism Score in Woodwaybest timeJanFebMarAprMayJunJulAugSepOctNovDec02468107.17.10.10.1 precipitationprecipitationcloudscloudstemperaturetemperaturetourism score
The tourism score (filled area), and its constituents: the temperature score (red line), the cloud cover score (blue line), and the precipitation score (green line).

The beach/pool score favors clear, rainless days with perceived temperatures between 75°F and 90°F. Based on this score, the best time of year to visit Woodway for hot-weather activities is from mid July to mid August, with a peak score in the first week of August.

Beach/Pool Score

Beach/Pool Score in WoodwayJanFebMarAprMayJunJulAugSepOctNovDec02468102.02.00.00.0 precipitationprecipitationcloudscloudstemperaturetemperature
The beach/pool score (filled area), and its constituents: the temperature score (red line), the cloud cover score (blue line), and the precipitation score (green line).

Methodology

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. 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 0.04 inches of precipitation or more.

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.

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.

Growing Season

Definitions of the growing season vary throughout the world, but for the purposes of this report, we define it as the longest continuous period of non-freezing temperatures (≥ 32°F) in the year (the calendar year in the Northern Hemisphere, or from July 1 until June 30 in the Southern Hemisphere).

The growing season in Woodway typically lasts for 9.4 months (285 days), from around February 17 to around November 29, rarely starting before January 14 or after March 12, and rarely ending before November 7 or after December 22.

Time Spent in Various Temperature Bands and the Growing Season

Time Spent in Various Temperature Bands and the Growing Season in Woodwaygrowing seasonJanFebMarAprMayJunJulAugSepOctNovDec0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%50%Feb 1750%Feb 1750%Nov 2950%Nov 2990%Mar 1290%Mar 1290%Nov 790%Nov 710%Jan 1410%Jan 1410%Dec 2210%Dec 22Jul 6100%Jul 6100%very coldcoldcoolcomfortablewarm
The percentage of time spent in various temperature bands: frigid < 15°F < freezing < 32°F < very cold < 45°F < cold < 55°F < cool < 65°F < comfortable < 75°F < warm < 85°F < hot < 95°F < sweltering. The black line is the percentage chance that a given day is within the growing season.

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. In this report, we use a base of 50°F and a cap of 86°F.

Based on growing degree days alone, the first spring blooms in Woodway should appear around April 10, only rarely appearing before March 16 or after May 2.

Growing Degree Days

The average growing degree days accumulated over the course of the year, with 25th to 75th and 10th to 90th percentile bands.

Solar Energy

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 3.4 months, from May 11 to August 23, with an average daily incident shortwave energy per square meter above 5.5 kWh. The brightest day of the year is July 21, with an average of 6.7 kWh.

The darker period of the year lasts for 3.7 months, from October 26 to February 17, with an average daily incident shortwave energy per square meter below 2.1 kWh. The darkest day of the year is December 25, with an average of 0.9 kWh.

Average Daily Incident Shortwave Solar Energy

The average daily shortwave solar energy reaching the ground per square meter (orange line), with 25th to 75th and 10th to 90th percentile bands.

Topography

For the purposes of this report, the geographical coordinates of Woodway are 47.796 deg latitude, -122.383 deg longitude, and 7 ft elevation.

The topography within 2 miles of Woodway contains only modest variations in elevation, with a maximum elevation change of 489 feet and an average elevation above sea level of 167 feet. Within 10 miles contains only modest variations in elevation (640 feet). Within 50 miles contains significant variations in elevation (7,720 feet).

The area within 2 miles of Woodway is covered by artificial surfaces (46%), water (38%), and herbaceous vegetation (14%), within 10 miles by water (39%) and artificial surfaces (39%), and within 50 miles by trees (50%) and water (19%).

Data Sources

This report illustrates the typical weather in Woodway, based on a statistical analysis of historical hourly weather reports and model reconstructions from January 1, 1980 to December 31, 2016.

Temperature and Dew Point

There are 3 weather stations near enough to contribute to our estimation of the temperature and dew point in Woodway.

For each station, the records are corrected for the elevation difference between that station and Woodway 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 Woodway is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between Woodway and a given station.

The stations contributing to this reconstruction are: Snohomish County Airport (Paine Field) (49%, 15 kilometers, northeast); King County International Airport (33%, 30 kilometers, south); and Bremerton National Airport (17%, 45 kilometers, southwest).

Other Data

All data relating to the Sun's position (e.g., sunrise and sunset) are computed using astronomical formulas from the book, Astronomical Tables of the Sun, Moon and Planets , by Jean Meeus.

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 . 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.

Land Use data comes from the Global Land Cover SHARE database , published by the Food and Agriculture Organization of the United Nations.

Elevation data comes from the Shuttle Radar Topography Mission (SRTM) , published by NASA's Jet Propulsion Laboratory.

Names, locations, and time zones of places and some airports come from the GeoNames Geographical Database .

Time zones for aiports and weather stations are provided by AskGeo.com .

Maps are © Esri, with data from National Geographic, Esri, DeLorme, NAVTEQ, UNEP-WCMC, USGS, NASA, ESA, METI, NRCAN, GEBCO, NOAA, and iPC.

Disclaimer

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.