Spring Weather in Anacortes Washington, United States
Daily high temperatures increase by 13°F, from 50°F to 63°F, rarely falling below 44°F or exceeding 70°F.
Daily low temperatures increase by 10°F, from 39°F to 49°F, rarely falling below 32°F or exceeding 54°F.
For reference, on August 3, the hottest day of the year, temperatures in Anacortes typically range from 54°F to 71°F, while on January 1, the coldest day of the year, they range from 37°F to 45°F.
The figure below shows you a compact characterization of the hourly average spring temperatures. The horizontal axis is the day, the vertical axis is the hour of the day, and the color is the average temperature for that hour and day.
Plœuc-sur-Lié, France (4,848 miles away) and Manchester, United Kingdom (4,583 miles) are the far-away foreign places with temperatures most similar to Anacortes (view comparison).
The spring in Anacortes experiences rapidly decreasing cloud cover, with the percentage of time that the sky is overcast or mostly cloudy decreasing from 67% to 54%.
The clearest day of the spring is May 19, with clear, mostly clear, or partly cloudy conditions 47% of the time.
For reference, on January 13, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 72%, while on August 3, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 72%.
A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. In Anacortes, the chance of a wet day over the course of the spring is very rapidly decreasing, starting the season at 46% and ending it at 25%.
For reference, the year's highest daily chance of a wet day is 57% on November 18, and its lowest chance is 8% on August 1.
To show variation within the season and not just the monthly totals, we show the rainfall accumulated over a sliding 31-day period centered around each day.
The average sliding 31-day rainfall during the spring in Anacortes is very rapidly decreasing, starting the season at 4.0 inches, when it rarely exceeds 6.5 inches or falls below 1.7 inches, and ending the season at 1.7 inches, when it rarely exceeds 3.1 inches or falls below 0.5 inches.
Over the course of the spring in Anacortes, the length of the day is very rapidly increasing. From the start to the end of the season, the length of the day increases by 4 hours, 47 minutes, implying an average daily increase of 3 minutes, 9 seconds, and weekly increase of 22 minutes, 6 seconds.
The shortest day of the spring is March 1, with 11 hours, 2 minutes of daylight and the longest day is May 31, with 15 hours, 49 minutes of daylight.
The latest sunrise of the spring in Anacortes is 7:29 AM on March 12 and the earliest sunrise is 2 hours, 16 minutes earlier at 5:13 AM on May 31.
The earliest sunset is 5:54 PM on March 1 and the latest sunset is 3 hours, 9 minutes later at 9:03 PM on May 31.
Daylight saving time (DST) starts at 3:00 AM on March 12, 2023, shifting sunrise and sunset to be an hour later.
For reference, on June 21, the longest day of the year, the Sun rises at 5:08 AM and sets 16 hours, 8 minutes later, at 9:16 PM, while on December 22, the shortest day of the year, it rises at 8:00 AM and sets 8 hours, 18 minutes later, at 4:17 PM.
The figure below presents a compact representation of the sun's elevation (the angle of the sun above the horizon) and azimuth (its compass bearing) for every hour of every day in the reporting period. The horizontal axis is the day of the year and the vertical axis is the hour of the day. For a given day and hour of that day, the background color indicates the azimuth of the sun at that moment. The black isolines are contours of constant solar elevation.
The figure below presents a compact representation of key lunar data for the spring of 2023. 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. The vertical gray bars (new Moons) and blue bars (full Moons) indicate key Moon phases. The label associated with each bar indicates the date and time that the phase is obtained, and the companion time labels indicate the rise and set times of the Moon for the nearest time interval in which the moon is above the horizon.
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 chance that a given day will be muggy in Anacortes is essentially constant during the spring, remaining around 0% throughout.
For reference, on August 8, the muggiest day of the year, there are muggy conditions 0% of the time, while on January 1, the least muggy day of the year, there are muggy conditions 0% of the time.
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 Anacortes is rapidly decreasing during the spring, decreasing from 6.0 miles per hour to 4.0 miles per hour over the course of the season.
For reference, on December 4, the windiest day of the year, the daily average wind speed is 7.0 miles per hour, while on August 11, the calmest day of the year, the daily average wind speed is 3.3 miles per hour.
The wind direction in Anacortes during the spring is predominantly out of the east from March 1 to March 22, the south from March 22 to April 7, and the west from April 7 to May 31.
Anacortes 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 surface water temperature in Anacortes is increasing during the spring, rising by 6°F, from 46°F to 52°F, over the course of the 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 Anacortes typically lasts for 8.7 months (264 days), from around February 27 to around November 18, rarely starting before January 28 or after March 22, and rarely ending before October 28 or after December 15.
The spring in Anacortes is more likely than not fully within the growing season, with the chance that a given day is in the growing season rapidly increasing from 53% to 100% over the course of the 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.
The average accumulated growing degree days in Anacortes are increasing during the spring, increasing by 209°F, from 15°F to 224°F, over the course of the season.
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 in Anacortes is very rapidly increasing during the spring, rising by 3.5 kWh, from 2.3 kWh to 5.8 kWh, over the course of the season.
For the purposes of this report, the geographical coordinates of Anacortes are 48.513 deg latitude, -122.613 deg longitude, and 16 ft elevation.
The topography within 2 miles of Anacortes contains only modest variations in elevation, with a maximum elevation change of 482 feet and an average elevation above sea level of 65 feet. Within 10 miles contains only modest variations in elevation (1,516 feet). Within 50 miles contains very significant variations in elevation (10,771 feet).
The area within 2 miles of Anacortes is covered by water (49%), artificial surfaces (22%), trees (18%), and herbaceous vegetation (11%), within 10 miles by water (61%) and trees (17%), and within 50 miles by trees (36%) and water (34%).
This report illustrates the typical weather in Anacortes, 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 5 weather stations near enough to contribute to our estimation of the temperature and dew point in Anacortes.
For each station, the records are corrected for the elevation difference between that station and Anacortes 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 Anacortes is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between Anacortes and a given station.
The stations contributing to this reconstruction are:
To get a sense of how much these sources agree with each other, you can view a comparison of Anacortes 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.g., sunrise and sunset) are computed using astronomical formulas from the book, Astronomical Algorithms 2nd Edition , 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 airports and weather stations are provided by AskGeo.com .
Maps are © OpenStreetMap contributors.
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.
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