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Climate and Average Weather Year Round at Pangborn Field Washington, United States

At Pangborn Field, the summers are warm, dry, and mostly clear and the winters are freezing, snowy, and partly cloudy. Over the course of the year, the temperature typically varies from 24°F to 90°F and is rarely below 11°F or above 98°F.

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

Climate at Pangborn Field

very coldcoldcoolwarmhotwarmcoldvery coldJanFebMarAprMayJunJulAugSepOctNovDecNowNow81%81%34%34%clearovercastprecipitation: 2.3 inprecipitation: 2.3 in0.2 in0.2 inmuggy: 0%muggy: 0%0%0%drydrytourism score: 7.9tourism score: 7.90.00.0
Pangborn Field weather by month. Click on each chart for more information.

The hot season lasts for 3.0 months, from June 11 to September 12, with an average daily high temperature above 78°F. The hottest month of the year at Pangborn Field is July, with an average high of 88°F and low of 63°F.

The cold season lasts for 3.0 months, from November 18 to February 19, with an average daily high temperature below 43°F. The coldest month of the year at Pangborn Field is December, with an average low of 25°F and high of 33°F.

Average High and Low Temperature at Pangborn Field

Average High and Low Temperature at Pangborn FieldhotcoldcoldJanFebMarAprMayJunJulAugSepOctNovDec0°F0°F10°F10°F20°F20°F30°F30°F40°F40°F50°F50°F60°F60°F70°F70°F80°F80°F90°F90°F100°F100°FDec 2932°FDec 2932°FJul 3190°FJul 3190°F24°F24°F64°F64°FJun 1178°FJun 1178°FSep 1278°FSep 1278°FFeb 1943°FFeb 1943°F55°F55°F55°F55°F30°F30°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.
AverageJanFebMarAprMayJunJulAugSepOctNovDec
High 34°F42°F54°F63°F72°F79°F88°F87°F77°F61°F45°F33°F
Temp. 29°F34°F43°F51°F60°F67°F74°F73°F64°F51°F38°F28°F
Low 25°F29°F36°F42°F50°F56°F63°F62°F54°F43°F33°F25°F

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 at Pangborn Field

Average Hourly Temperature at Pangborn FieldJanFebMarAprMayJunJulAugSepOctNovDec12 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 AMNowNowfreezingfreezingvery coldvery coldcoldcoldcoolcomfortablecomfortablewarmhot
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.

Bucharest, Romania (5,776 miles away) is the far-away foreign place with temperatures most similar to Pangborn Field (view comparison).

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At Pangborn Field, 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 at Pangborn Field begins around June 8 and lasts for 3.9 months, ending around October 6.

The clearest month of the year at Pangborn Field is July, during which on average the sky is clear, mostly clear, or partly cloudy 76% of the time.

The cloudier part of the year begins around October 6 and lasts for 8.1 months, ending around June 8.

The cloudiest month of the year at Pangborn Field is January, during which on average the sky is overcast or mostly cloudy 65% of the time.

Cloud Cover Categories at Pangborn Field

Cloud Cover Categories at Pangborn FieldclearercloudiercloudierJanFebMarAprMayJunJulAugSepOctNovDec0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%Aug 281%Aug 281%Jan 1534%Jan 1534%Jun 857%Jun 857%Oct 658%Oct 658%NowNowclearmostly clearpartly cloudyovercastmostly cloudy
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.
FractionJanFebMarAprMayJunJulAugSepOctNovDec
Cloudier 65%61%59%54%49%38%23%24%33%48%60%63%
Clearer 35%39%41%46%51%62%76%76%67%52%40%37%

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

The wetter season lasts 5.2 months, from October 16 to March 23, with a greater than 19% chance of a given day being a wet day. The month with the most wet days at Pangborn Field is November, with an average of 9.4 days with at least 0.04 inches of precipitation.

The drier season lasts 6.8 months, from March 23 to October 16. The month with the fewest wet days at Pangborn Field is August, with an average of 1.6 days with at least 0.04 inches of precipitation.

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 at Pangborn Field changes throughout the year.

Rain alone is the most common for 11 months, from January 19 to December 8. The month with the most days of rain alone at Pangborn Field is November, with an average of 7.1 days.

Snow alone is the most common for 1.4 months, from December 8 to January 19. The month with the most days of snow alone at Pangborn Field is December, with an average of 4.3 days.

Daily Chance of Precipitation at Pangborn Field

Daily Chance of Precipitation at Pangborn FieldrainJanFebMarAprMayJunJulAugSepOctNovDec0%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%Nov 2734%Nov 2734%Aug 45%Aug 45%Jan 1928%Jan 1928%Oct 1619%Oct 1619%Mar 2319%Mar 2319%NowNowsnowrainmixed
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).
Days ofJanFebMarAprMayJunJulAugSepOctNovDec
Rain 3.0d4.4d5.4d4.1d4.2d2.9d1.7d1.6d2.5d5.6d7.1d3.1d
Mixed 1.8d1.3d0.5d0.0d0.0d0.0d0.0d0.0d0.0d0.1d1.2d2.0d
Snow 3.8d1.4d0.3d0.0d0.0d0.0d0.0d0.0d0.0d0.0d1.2d4.3d
Any 8.6d7.1d6.2d4.2d4.2d2.9d1.7d1.6d2.5d5.7d9.4d9.4d

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. Pangborn Field experiences some seasonal variation in monthly rainfall.

The rainy period of the year lasts for 9.0 months, from September 20 to June 19, with a sliding 31-day rainfall of at least 0.5 inches. The month with the most rain at Pangborn Field is November, with an average rainfall of 1.8 inches.

The rainless period of the year lasts for 3.0 months, from June 19 to September 20. The month with the least rain at Pangborn Field is August, with an average rainfall of 0.3 inches.

Average Monthly Rainfall at Pangborn Field

Average Monthly Rainfall at Pangborn FieldrainrainJanFebMarAprMayJunJulAugSepOctNovDec0 in0 in2 in2 in4 in4 in6 in6 in8 in8 in10 in10 in12 in12 in14 in14 inNov 121.8 inNov 121.8 inAug 30.2 inAug 30.2 inFeb 271.1 inFeb 271.1 inJan 50.8 inJan 50.8 inMay 220.7 inMay 220.7 inSep 200.5 inSep 200.5 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.
JanFebMarAprMayJunJulAugSepOctNovDec
Rainfall 0.8″1.0″1.0″0.7″0.7″0.5″0.3″0.3″0.5″1.1″1.8″1.0″

Snowfall

As with rainfall, we consider the snowfall accumulated over a sliding 31-day period centered around each day of the year. Pangborn Field experiences extreme seasonal variation in monthly snowfall.

The snowy period of the year lasts for 4.5 months, from October 30 to March 14, with a sliding 31-day snowfall of at least 1.0 inches. The month with the most snow at Pangborn Field is December, with an average snowfall of 10.7 inches.

The snowless period of the year lasts for 7.5 months, from March 14 to October 30. The least snow falls around July 16, with an average total accumulation of 0.0 inches.

Average Monthly Snowfall at Pangborn Field

Average Monthly Snowfall at Pangborn FieldsnowsnowJanFebMarAprMayJunJulAugSepOctNovDec0 in0 in5 in5 in10 in10 in15 in15 in20 in20 inDec 2911.8 inDec 2911.8 inJul 160.0 inJul 160.0 inOct 301.0 inOct 301.0 inMar 141.0 inMar 141.0 in
The average 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.
JanFebMarAprMayJunJulAugSepOctNovDec
Snowfall 9.9″4.1″0.9″0.0″0.0″0.0″0.0″0.0″0.0″0.2″3.7″10.7″

The length of the day at Pangborn Field varies significantly over the course of the year. In 2024, the shortest day is December 21, with 8 hours, 27 minutes of daylight; the longest day is June 20, with 15 hours, 57 minutes of daylight.

Hours of Daylight and Twilight at Pangborn Field

Hours of Daylight and Twilight at Pangborn FieldJanFebMarAprMayJunJulAugSepOctNovDec0 hr24 hr4 hr20 hr8 hr16 hr12 hr12 hr16 hr8 hr20 hr4 hr24 hr0 hr12 hr, 9 minMar 1912 hr, 9 minMar 1915 hr, 57 minJun 2015 hr, 57 minJun 2012 hr, 12 minSep 2212 hr, 12 minSep 228 hr, 27 minDec 218 hr, 27 minDec 21nightnightdayNowNow
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.
Hours ofJanFebMarAprMayJunJulAugSepOctNovDec
Daylight 9.0h10.3h12.0h13.7h15.2h15.9h15.5h14.2h12.5h10.8h9.3h8.5h

The earliest sunrise is at 5:03 AM on June 15, and the latest sunrise is 2 hours, 45 minutes later at 7:48 AM on December 31. The earliest sunset is at 4:09 PM on December 10, and the latest sunset is 4 hours, 52 minutes later at 9:01 PM on June 25.

Daylight saving time (DST) is observed at Pangborn Field during 2024, starting in the spring on March 10, lasting 7.8 months, and ending in the fall on November 3.

Sunrise & Sunset with Twilight and Daylight Saving Time at Pangborn Field

Sunrise & Sunset with Twilight and Daylight Saving Time at Pangborn FieldJanFebMarAprMayJunJulAugSepOctNovDec12 AM2 AM4 AM6 AM8 AM10 AM12 PM2 PM4 PM6 PM8 PM10 PM12 AMJun 155:03 AMJun 155:03 AM9:01 PMJun 259:01 PMJun 25Dec 104:09 PMDec 104:09 PM7:48 AMDec 317:48 AMDec 31Mar 10DSTMar 10DSTDSTNov 3DSTNov 3daynightnightnightnightSolarMidnightSolarMidnightSolarNoonSunsetNowNow
The solar day over the course of the year 2024. 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 at Pangborn Field

Solar Elevation and Azimuth at Pangborn FieldJanFebMarAprMayJunJulAugSepOctNovDec12 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 AM00010101010202030304040506000010101020202020303040405050601966NowNow
northeastsouthwest
Solar elevation and azimuth over the course of the year 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 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.

Moon Rise, Set & Phases at Pangborn Field

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 perceived humidity level at Pangborn Field, 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 at Pangborn Field

Humidity Comfort Levels at Pangborn FieldJanFebMarAprMayJunJulAugSepOctNovDec0%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%Jan 240%Jan 240%Aug 200%Aug 200%NowNowdrydry
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.
JanFebMarAprMayJunJulAugSepOctNovDec
Muggy days 0.0d0.0d0.0d0.0d0.0d0.0d0.0d0.0d0.0d0.0d0.0d0.0d

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 Pangborn Field experiences mild seasonal variation over the course of the year.

The windier part of the year lasts for 6.1 months, from March 1 to September 5, with average wind speeds of more than 5.7 miles per hour. The windiest month of the year at Pangborn Field is June, with an average hourly wind speed of 6.4 miles per hour.

The calmer time of year lasts for 5.9 months, from September 5 to March 1. The calmest month of the year at Pangborn Field is December, with an average hourly wind speed of 5.0 miles per hour.

Average Wind Speed at Pangborn Field

Average Wind Speed at Pangborn FieldwindyJanFebMarAprMayJunJulAugSepOctNovDec0 mph0 mph1 mph1 mph2 mph2 mph3 mph3 mph4 mph4 mph5 mph5 mph6 mph6 mph7 mph7 mph8 mph8 mph9 mph9 mph10 mph10 mphJun 196.4 mphJun 196.4 mphDec 204.9 mphDec 204.9 mphMar 15.7 mphMar 15.7 mphSep 55.7 mphSep 55.7 mphNowNow
The average of mean hourly wind speeds (dark gray line), with 25th to 75th and 10th to 90th percentile bands.
JanFebMarAprMayJunJulAugSepOctNovDec
Wind Speed (mph) 5.05.45.96.26.36.46.25.95.65.35.25.0

The predominant average hourly wind direction at Pangborn Field varies throughout the year.

The wind is most often from the west for 9.1 months, from February 24 to November 26, with a peak percentage of 67% on June 22. The wind is most often from the north for 2.9 months, from November 26 to February 24, with a peak percentage of 44% on January 1.

Wind Direction at Pangborn Field

Wind Direction at Pangborn FieldNWNJanFebMarAprMayJunJulAugSepOctNovDec0%100%20%80%40%60%60%40%80%20%100%0%NowNowwestnorthsoutheast
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).

To characterize how pleasant the weather is at Pangborn Field 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 Pangborn Field for general outdoor tourist activities is from early July to late August, with a peak score in the first week of August.

Tourism Score at Pangborn Field

Tourism Score at Pangborn Fieldbest timeJanFebMarAprMayJunJulAugSepOctNovDec002244668810107.97.90.00.0NowNowtemperaturetemperature cloudscloudsprecipitationprecipitationtourism 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 Pangborn Field for hot-weather activities is from mid July to mid August, with a peak score in the last week of July.

Beach/Pool Score at Pangborn Field

Beach/Pool Score at Pangborn FieldJanFebMarAprMayJunJulAugSepOctNovDec002244668810105.25.20.00.0NowNowtemperaturetemperature cloudscloudsprecipitationprecipitationbeach/pool score
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.

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 Pangborn Field typically lasts for 6.8 months (210 days), from around April 1 to around October 27, rarely starting before March 10 or after April 22, and rarely ending before October 9 or after November 16.

Time Spent in Various Temperature Bands and the Growing Season at Pangborn Field

Time Spent in Various Temperature Bands and the Growing Season at Pangborn Fieldgrowing seasonJanFebMarAprMayJunJulAugSepOctNovDec0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%50%Apr 150%Apr 150%Oct 2750%Oct 2790%Apr 2290%Apr 2290%Oct 990%Oct 910%Mar 1010%Mar 1010%Nov 1610%Nov 160%Jan 250%Jan 25Jul 16100%Jul 16100%freezingvery coldcoldcoolcomfortablewarmhotfrigid
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.

Based on growing degree days alone, the first spring blooms at Pangborn Field should appear around April 15, only rarely appearing before April 2 or after April 28.

Growing Degree Days at Pangborn Field

Growing Degree Days at Pangborn FieldJanFebMarAprMayJunJulAugSepOctNovDec0°F0°F500°F500°F1,000°F1,000°F1,500°F1,500°F2,000°F2,000°F2,500°F2,500°F3,000°F3,000°FApr 1590°FApr 1590°FJun 25900°FJun 25900°FAug 41,800°FAug 41,800°FDec 312,975°FDec 312,975°F
The average growing degree days accumulated over the course of the year, 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 experiences extreme seasonal variation over the course of the year.

The brighter period of the year lasts for 3.2 months, from May 13 to August 20, with an average daily incident shortwave energy per square meter above 6.4 kWh. The brightest month of the year at Pangborn Field is July, with an average of 7.6 kWh.

The darker period of the year lasts for 3.7 months, from October 25 to February 16, with an average daily incident shortwave energy per square meter below 2.4 kWh. The darkest month of the year at Pangborn Field is December, with an average of 1.2 kWh.

Average Daily Incident Shortwave Solar Energy at Pangborn Field

Average Daily Incident Shortwave Solar Energy at Pangborn FieldbrightdarkdarkJanFebMarAprMayJunJulAugSepOctNovDec0 kWh0 kWh1 kWh1 kWh2 kWh2 kWh3 kWh3 kWh4 kWh4 kWh5 kWh5 kWh6 kWh6 kWh7 kWh7 kWh8 kWh8 kWh9 kWh9 kWhJul 127.7 kWhJul 127.7 kWhDec 221.1 kWhDec 221.1 kWhMay 136.4 kWhMay 136.4 kWhAug 206.4 kWhAug 206.4 kWhOct 252.4 kWhOct 252.4 kWhFeb 162.4 kWhFeb 162.4 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.
JanFebMarAprMayJunJulAugSepOctNovDec
Solar Energy (kWh) 1.52.43.75.36.57.37.66.54.83.01.61.2

For the purposes of this report, the geographical coordinates of Pangborn Field are 47.399 deg latitude, -120.207 deg longitude, and 1,224 ft elevation.

The topography within 2 miles of Pangborn Field contains very significant variations in elevation, with a maximum elevation change of 1,138 feet and an average elevation above sea level of 1,135 feet. Within 10 miles contains very significant variations in elevation (4,498 feet). Within 50 miles also contains extreme variations in elevation (8,816 feet).

The area within 2 miles of Pangborn Field is covered by cropland (62%) and grassland (18%), within 10 miles by shrubs (62%) and cropland (13%), and within 50 miles by shrubs (50%) and trees (18%).

This report illustrates the typical weather at Pangborn Field, 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

Pangborn Field 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 Bowers Field, Ephrata Municipal Airport, Yakima Air Terminal Airport, Grant County International Airport, Hanford, Stampede Pass, Omak Airport, and Tri-Cities 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.

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.

Please review our full terms contained on our Terms of Service page.