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Spring Weather at Chehalis-Centralia Airport Washington, United States

Daily high temperatures increase by 16°F, from 53°F to 70°F, rarely falling below 46°F or exceeding 82°F.

Daily low temperatures increase by 11°F, from 37°F to 48°F, rarely falling below 28°F or exceeding 54°F.

For reference, on August 3, the hottest day of the year, temperatures at Chehalis-Centralia Airport typically range from 53°F to 81°F, while on December 19, the coldest day of the year, they range from 35°F to 45°F.

Average High and Low Temperature in the Spring at Chehalis-Centralia Airport

Average High and Low Temperature in the Spring at Chehalis-Centralia AirportMarAprMay30°F30°F40°F40°F50°F50°F60°F60°F70°F70°F80°F80°F90°F90°FWinterSummerMar 153°FMar 153°F37°F37°FMay 3170°FMay 3170°F48°F48°FApr 158°FApr 158°F39°F39°FMay 164°FMay 164°F42°F42°FNowNow
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 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.

Average Hourly Temperature in the Spring at Chehalis-Centralia Airport

Average Hourly Temperature in the Spring at Chehalis-Centralia AirportMarAprMay12 AM12 AM2 AM2 AM4 AM4 AM6 AM6 AM8 AM8 AM10 AM10 AM12 PM12 PM2 PM2 PM4 PM4 PM6 PM6 PM8 PM8 PM10 PM10 PM12 AM12 AMWinterSummerNowNowvery coldvery coldcoldcoolcomfortablecool
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 average hourly temperature, color coded into bands. The shaded overlays indicate night and civil twilight.

Gasteiz / Vitoria, Spain (5,261 miles away) and Pruniers-en-Sologne, France (5,141 miles) are the far-away foreign places with temperatures most similar to Chehalis-Centralia Airport (view comparison).

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The spring at Chehalis-Centralia Airport experiences very rapidly decreasing cloud cover, with the percentage of time that the sky is overcast or mostly cloudy decreasing from 74% to 56%.

The clearest day of the spring is May 31, with clear, mostly clear, or partly cloudy conditions 44% of the time.

For reference, on January 16, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 78%, while on August 2, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 77%.

Cloud Cover Categories in the Spring at Chehalis-Centralia Airport

Cloud Cover Categories in the Spring at Chehalis-Centralia AirportMarAprMay0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%WinterSummerMar 126%Mar 126%May 3144%May 3144%Apr 127%Apr 127%May 138%May 138%NowNowclearmostly clearpartly cloudyovercast
0% clear 20% mostly clear 40% partly cloudy 60% mostly cloudy 80% overcast 100%
The percentage of time spent in each cloud cover band, categorized by the percentage of the sky covered by clouds.

A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. At Chehalis-Centralia Airport, the chance of a wet day over the course of the spring is very rapidly decreasing, starting the season at 53% and ending it at 28%.

For reference, the year's highest daily chance of a wet day is 60% on November 16, and its lowest chance is 7% on August 2.

Over the course of the spring at Chehalis-Centralia Airport, the chance of a day with only rain decreases from 52% to 28%, the chance of a day with mixed snow and rain remains an essentially constant 1% throughout, and the chance of a day with only snow remains an essentially constant 0% throughout.

Probability of Precipitation in the Spring at Chehalis-Centralia Airport

Probability of Precipitation in the Spring at Chehalis-Centralia AirportMarAprMay0%0%5%5%10%10%15%15%20%20%25%25%30%30%35%35%40%40%45%45%50%50%55%55%WinterSummerMar 153%Mar 153%May 3128%May 3128%Apr 147%Apr 147%May 133%May 133%NowNowrainmixed
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 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 at Chehalis-Centralia Airport is very rapidly decreasing, starting the season at 6.5 inches, when it rarely exceeds 11.4 inches or falls below 2.6 inches, and ending the season at 2.1 inches, when it rarely exceeds 3.8 inches or falls below 0.5 inches.

Average Monthly Rainfall in the Spring at Chehalis-Centralia Airport

Average Monthly Rainfall in the Spring at Chehalis-Centralia AirportMarAprMay0 in0 in2 in2 in4 in4 in6 in6 in8 in8 in10 in10 in12 in12 inWinterSummerMar 16.5 inMar 16.5 inMay 312.1 inMay 312.1 inApr 15.1 inApr 15.1 inMay 13.1 inMay 13.1 inNowNow
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 snowfall.

Over the course of the spring at Chehalis-Centralia Airport, 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, 27 minutes, implying an average daily increase of 2 minutes, 56 seconds, and weekly increase of 20 minutes, 32 seconds.

The shortest day of the spring is March 1, with 11 hours, 9 minutes of daylight and the longest day is May 31, with 15 hours, 35 minutes of daylight.

Hours of Daylight and Twilight in the Spring at Chehalis-Centralia Airport

Hours of Daylight and Twilight in the Spring at Chehalis-Centralia AirportMarAprMay0 hr24 hr4 hr20 hr8 hr16 hr12 hr12 hr16 hr8 hr20 hr4 hr24 hr0 hrWinterSummerMar 1912 hr, 9 minMar 1912 hr, 9 minnightnightdaydayMay 3115 hr, 35 minMay 3115 hr, 35 minMay 114 hr, 26 minMay 114 hr, 26 minNowNow
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 latest sunrise of the spring at Chehalis-Centralia Airport is 7:33 AM on March 10 and the earliest sunrise is 2 hours, 11 minutes earlier at 5:22 AM on May 31.

The earliest sunset is 5:58 PM on March 1 and the latest sunset is 2 hours, 59 minutes later at 8:57 PM on May 31.

Daylight saving time (DST) ends at 3:00 AM on March 10, 2024, shifting sunrise and sunset to be an hour earlier.

For reference, on June 20, the longest day of the year, the Sun rises at 5:18 AM and sets 15 hours, 51 minutes later, at 9:09 PM, while on December 21, the shortest day of the year, it rises at 7:53 AM and sets 8 hours, 33 minutes later, at 4:26 PM.

Sunrise & Sunset with Twilight and Daylight Saving Time in the Spring at Chehalis-Centralia Airport

Sunrise & Sunset with Twilight and Daylight Saving Time in the Spring at Chehalis-Centralia AirportMarAprMay2 AM4 AM6 AM8 AM10 AM12 PM2 PM4 PM6 PM8 PM10 PM12 AMWinterSummer5:22 AM5:22 AMMay 318:57 PMMay 318:57 PM6:50 AM6:50 AMMar 15:58 PMMar 15:58 PM6:49 AM6:49 AMApr 17:42 PMApr 17:42 PM5:56 AM5:56 AMMay 18:22 PMMay 18:22 PMMar 10DSTMar 10DSTSolarMidnightSolarMidnightSolarNoonSunriseSunsetNowNow
The solar day in the spring. 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.

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.

Solar Elevation and Azimuth in the Spring at Chehalis-Centralia Airport

Solar Elevation and Azimuth in the Spring at Chehalis-Centralia AirportMarAprMay12 AM12 AM2 AM2 AM4 AM4 AM6 AM6 AM8 AM8 AM10 AM10 AM12 PM12 PM2 PM2 PM4 PM4 PM6 PM6 PM8 PM8 PM10 PM10 PM12 AM12 AMWinterSummer0010203030405060010102030405060NowNow
northeastsouthwest
Solar elevation and azimuth in the the spring of 2024. The black lines are lines of constant solar elevation (the angle of the sun above the horizon, in degrees). The background color fills indicate the azimuth (the compass bearing) of the sun. The lightly tinted areas at the boundaries of the cardinal compass points indicate the implied intermediate directions (northeast, southeast, southwest, and northwest).

The figure below presents a compact representation of key lunar data for the spring of 2024. 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.

Moon Rise, Set & Phases in the Spring at Chehalis-Centralia Airport

Moon Rise, Set & Phases in the Spring at Chehalis-Centralia AirportMarAprMay12 AM12 AM4 AM4 AM8 AM8 AM12 PM12 PM4 PM4 PM8 PM8 PM12 AM12 AMWinterSummerFeb 93:00 PMFeb 93:00 PMFeb 244:31 AMFeb 244:31 AMMar 101:01 AMMar 101:01 AMMar 2512:01 AMMar 2512:01 AMApr 811:22 AMApr 811:22 AMApr 234:50 PMApr 234:50 PMMay 78:23 PMMay 78:23 PMMay 236:54 AMMay 236:54 AMJun 65:38 AMJun 65:38 AMJun 216:09 PMJun 216:09 PM7:47 AM7:47 AM5:16 PM5:16 PM5:04 PM5:04 PM7:27 AM7:27 AM7:55 AM7:55 AM8:01 PM8:01 PM7:11 PM7:11 PM7:18 AM7:18 AM8:16 PM8:16 PM8:21 PM8:21 PM6:14 AM6:14 AM8:36 PM8:36 PM8:30 PM8:30 PM5:07 AM5:07 AM4:55 AM4:55 AM10:06 PM10:06 PM9:42 PM9:42 PM5:22 AM5:22 AM
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 shaded overlays indicate night and civil twilight.

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 at Chehalis-Centralia Airport is essentially constant during the spring, remaining around 0% throughout.

For reference, on August 6, the muggiest day of the year, there are muggy conditions 1% of the time, while on January 1, the least muggy day of the year, there are muggy conditions 0% of the time.

Humidity Comfort Levels in the Spring at Chehalis-Centralia Airport

Humidity Comfort Levels in the Spring at Chehalis-Centralia AirportMarAprMay0%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%WinterSummerMar 10%Mar 10%May 310%May 310%Apr 10%Apr 10%May 10%May 10%comfortablecomfortabledrydry
dry 55°F comfortable 60°F humid 65°F muggy 70°F oppressive 75°F miserable
The percentage of time spent at various humidity comfort levels, categorized by dew point.

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 at Chehalis-Centralia Airport is gradually decreasing during the spring, decreasing from 4.4 miles per hour to 3.5 miles per hour over the course of the season.

For reference, on December 2, the windiest day of the year, the daily average wind speed is 4.9 miles per hour, while on August 1, the calmest day of the year, the daily average wind speed is 3.2 miles per hour.

Average Wind Speed in the Spring at Chehalis-Centralia Airport

Average Wind Speed in the Spring at Chehalis-Centralia AirportMarAprMay0 mph0 mph1 mph1 mph2 mph2 mph3 mph3 mph4 mph4 mph5 mph5 mph6 mph6 mph7 mph7 mphWinterSummerMar 14.4 mphMar 14.4 mphMay 313.5 mphMay 313.5 mphApr 14.1 mphApr 14.1 mphMay 13.7 mphMay 13.7 mphNowNow
The average of mean hourly wind speeds (dark gray line), with 25th to 75th and 10th to 90th percentile bands.

The wind direction at Chehalis-Centralia Airport during the spring is predominantly out of the south from March 1 to April 8 and the west from April 8 to May 31.

Wind Direction in the Spring at Chehalis-Centralia Airport

Wind Direction in the Spring at Chehalis-Centralia AirportSWMarAprMay0%100%20%80%40%60%60%40%80%20%100%0%WinterSummerNowNowwestsoutheastnorth
northeastsouthwest
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 1.0 mph. The lightly tinted areas at the boundaries are the percentage of hours spent in the implied intermediate directions (northeast, southeast, southwest, and northwest).

Chehalis-Centralia Airport 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 at Chehalis-Centralia Airport is increasing during the spring, rising by 7°F, from 48°F to 55°F, over the course of the season.

Average Water Temperature in the Spring at Chehalis-Centralia Airport

Average Water Temperature in the Spring at Chehalis-Centralia AirportMarAprMay44°F44°F46°F46°F48°F48°F50°F50°F52°F52°F54°F54°F56°F56°F58°F58°F60°F60°F62°F62°FWinterSummerMar 148°FMar 148°FMay 3155°FMay 3155°FApr 149°FApr 149°FMay 152°FMay 152°FNowNow
The daily average water temperature (purple line), with 25th to 75th and 10th to 90th percentile bands.

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 at Chehalis-Centralia Airport typically lasts for 6.0 months (184 days), from around April 21 to around October 22, rarely starting before April 1 or after May 11, and rarely ending before September 29 or after November 12.

During the spring at Chehalis-Centralia Airport, the chance that a given day is within the growing season is very rapidly increasing rising from 0% to 100% over the course of the season.

Time Spent in Various Temperature Bands and the Growing Season in the Spring at Chehalis-Centralia Airport

Time Spent in Various Temperature Bands and the Growing Season in the Spring at Chehalis-Centralia Airportgrowing seasonMarAprMay0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%WinterSummerMar 10%Mar 10%100%May 31100%May 31Apr 110%Apr 110%74%May 174%May 1NowNowfreezingvery coldcoldcoolcomfortablewarm
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 percentage of time spent in various temperature bands. 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.

The average accumulated growing degree days at Chehalis-Centralia Airport are increasing during the spring, increasing by 332°F, from 23°F to 356°F, over the course of the season.

Growing Degree Days in the Spring at Chehalis-Centralia Airport

Growing Degree Days in the Spring at Chehalis-Centralia AirportMarAprMay50°F50°F100°F100°F150°F150°F200°F200°F250°F250°F300°F300°F350°F350°F400°F400°F450°F450°FWinterSummerMar 123°FMar 123°FMay 31356°FMay 31356°FApr 165°FApr 165°FMay 1161°FMay 1161°FNowNow
The average growing degree days accumulated over the course of the spring, with 25th to 75th and 10th to 90th percentile bands.

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 at Chehalis-Centralia Airport 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.

Average Daily Incident Shortwave Solar Energy in the Spring at Chehalis-Centralia Airport

Average Daily Incident Shortwave Solar Energy in the Spring at Chehalis-Centralia AirportMarAprMay0 kWh0 kWh1 kWh1 kWh2 kWh2 kWh3 kWh3 kWh4 kWh4 kWh5 kWh5 kWh6 kWh6 kWh7 kWh7 kWh8 kWh8 kWh9 kWh9 kWhWinterSummerMar 12.3 kWhMar 12.3 kWhMay 315.8 kWhMay 315.8 kWhApr 13.6 kWhApr 13.6 kWhMay 15.1 kWhMay 15.1 kWhNowNow
The average daily shortwave solar energy reaching the ground per square meter (orange line), with 25th to 75th and 10th to 90th percentile bands.

For the purposes of this report, the geographical coordinates of Chehalis-Centralia Airport are 46.674 deg latitude, -122.986 deg longitude, and 171 ft elevation.

The topography within 2 miles of Chehalis-Centralia Airport contains only modest variations in elevation, with a maximum elevation change of 482 feet and an average elevation above sea level of 234 feet. Within 10 miles contains only modest variations in elevation (1,342 feet). Within 50 miles contains very significant variations in elevation (7,976 feet).

The area within 2 miles of Chehalis-Centralia Airport is covered by cropland (52%), artificial surfaces (23%), and shrubs (17%), within 10 miles by trees (50%) and cropland (27%), and within 50 miles by trees (56%) and shrubs (22%).

This report illustrates the typical weather at Chehalis-Centralia Airport, 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

Chehalis-Centralia Airport has a weather station that reported reliably enough during the analysis period that we have included it in our network. When available, historical temperature and dew point measurements are taken directly from this weather station. These records are obtained from NOAA's Integrated Surface Hourly data set, falling back on ICAO METAR records as required.

In the case of missing or erroneous measurements from this station, we fall back on records from nearby stations, adjusted according to typical seasonal and diurnal intra-station differences. For a given day of the year and hour of the day, the fallback station is selected to minimize the prediction error over the years for which there are measurements for both stations.

The stations on which we may fall back include but are not limited to Olympia Regional Airport, Madigan Hospital Heliport, Southwest Washington Regional Airport, Sanderson Field, McChord Field Airport (Joint Base Lewis-McChord), Tacoma Narrows Airport, Pierce County Airport Thun Field, and Bremerton National Airport.

Other 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.

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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.

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