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Climate and Average Weather Year Round at Dillingham Airport Alaska, United States

At Dillingham Airport, the summers are cool and mostly cloudy and the winters are long, freezing, snowy, windy, and partly cloudy. Over the course of the year, the temperature typically varies from 11°F to 62°F and is rarely below -14°F or above 71°F.

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

Climate at Dillingham Airport

freezingvery coldcoldcoolcoldfreezingJanFebMarAprMayJunJulAugSepOctNovDecNowNow46%46%35%35%overcastclearprecipitation: 3.9 inprecipitation: 3.9 in1.4 in1.4 inmuggy: 0%muggy: 0%0%0%drydrytourism score: 2.3tourism score: 2.30.00.0
Dillingham Airport weather by month. Click on each chart for more information.

The warm season lasts for 3.6 months, from May 24 to September 13, with an average daily high temperature above 54°F. The hottest month of the year at Dillingham Airport is July, with an average high of 62°F and low of 49°F.

The cold season lasts for 4.2 months, from November 12 to March 17, with an average daily high temperature below 30°F. The coldest month of the year at Dillingham Airport is January, with an average low of 12°F and high of 23°F.

Average High and Low Temperature at Dillingham Airport

Average High and Low Temperature at Dillingham AirportwarmcoldcoldJanFebMarAprMayJunJulAugSepOctNovDec-20°F-20°F-10°F-10°F0°F0°F10°F10°F20°F20°F30°F30°F40°F40°F50°F50°F60°F60°F70°F70°F80°F80°F90°F90°F100°F100°FJan 1822°FJan 1822°FJul 2262°FJul 2262°F11°F11°F49°F49°FMay 2454°FMay 2454°FSep 1354°FSep 1354°FNov 1230°FNov 1230°FMar 1730°FMar 1730°F39°F39°F42°F42°F19°F19°F18°F18°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 23°F26°F30°F39°F51°F59°F62°F61°F54°F41°F29°F24°F
Temp. 16°F19°F23°F32°F43°F51°F55°F54°F47°F34°F23°F18°F
Low 12°F14°F18°F27°F37°F44°F49°F48°F41°F29°F18°F13°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 Dillingham Airport

Average Hourly Temperature at Dillingham AirportJanFebMarAprMayJunJulAugSepOctNovDec12 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 coldcoldcoolvery cold
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.

Tynset, Norway (4,040 miles away) and Lakselv, Norway (3,520 miles) are the far-away foreign places with temperatures most similar to Dillingham Airport (view comparison).

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At Dillingham Airport, the average percentage of the sky covered by clouds experiences mild seasonal variation over the course of the year.

The clearer part of the year at Dillingham Airport begins around September 15 and lasts for 1.9 months, ending around November 11.

The clearest month of the year at Dillingham Airport is October, during which on average the sky is clear, mostly clear, or partly cloudy 45% of the time.

The cloudier part of the year begins around November 11 and lasts for 10 months, ending around September 15.

The cloudiest month of the year at Dillingham Airport is January, during which on average the sky is overcast or mostly cloudy 64% of the time.

Cloud Cover Categories at Dillingham Airport

Cloud Cover Categories at Dillingham AirportclearercloudiercloudierJanFebMarAprMayJunJulAugSepOctNovDec0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%Oct 1446%Oct 1446%Jan 735%Jan 735%NowNowclearmostly clearpartly cloudymostly 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.
FractionJanFebMarAprMayJunJulAugSepOctNovDec
Cloudier 64%60%56%57%60%61%64%61%59%55%60%63%
Clearer 36%40%44%43%40%39%36%39%41%45%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 Dillingham Airport varies throughout the year.

The wetter season lasts 7.0 months, from June 30 to January 31, with a greater than 30% chance of a given day being a wet day. The month with the most wet days at Dillingham Airport is September, with an average of 11.5 days with at least 0.04 inches of precipitation.

The drier season lasts 5.0 months, from January 31 to June 30. The month with the fewest wet days at Dillingham Airport is April, with an average of 6.2 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 Dillingham Airport changes throughout the year.

Rain alone is the most common for 9.6 months, from February 9 to March 10 and from March 18 to December 6. The month with the most days of rain alone at Dillingham Airport is September, with an average of 11.4 days.

Snow alone is the most common for 2.1 months, from December 6 to February 9. The month with the most days of snow alone at Dillingham Airport is January, with an average of 4.0 days.

Mixed snow and rain is the most common for 1.1 weeks, from March 10 to March 18. The month with the most days of mixed snow and rain at Dillingham Airport is December, with an average of 2.7 days.

Daily Chance of Precipitation at Dillingham Airport

Daily Chance of Precipitation at Dillingham AirportsnowrainrainsnowJanFebMarAprMayJunJulAugSepOctNovDec0%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%Sep 740%Sep 740%Apr 2220%Apr 2220%Feb 928%Feb 928%Mar 1024%Mar 1024%Dec 631%Dec 631%Jun 3030%Jun 3030%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 3.3d2.7d2.5d3.9d7.3d8.2d10.8d11.5d11.4d7.7d4.5d3.4d
Mixed 2.6d2.3d2.2d1.4d0.3d0.0d0.0d0.0d0.1d1.1d2.2d2.7d
Snow 4.0d2.7d2.2d0.9d0.0d0.0d0.0d0.0d0.0d0.8d2.8d3.6d
Any 9.9d7.7d6.9d6.2d7.6d8.2d10.8d11.5d11.5d9.6d9.5d9.7d

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. Dillingham Airport experiences significant seasonal variation in monthly rainfall.

Rain falls throughout the year at Dillingham Airport. The month with the most rain at Dillingham Airport is September, with an average rainfall of 3.9 inches.

The month with the least rain at Dillingham Airport is March, with an average rainfall of 0.8 inches.

Average Monthly Rainfall at Dillingham Airport

Average Monthly Rainfall at Dillingham AirportJanFebMarAprMayJunJulAugSepOctNovDec0 in0 in2 in2 in4 in4 in6 in6 in8 in8 in10 in10 in12 in12 inSep 153.9 inSep 153.9 inMar 130.8 inMar 130.8 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 snowfall.
JanFebMarAprMayJunJulAugSepOctNovDec
Rainfall 1.3″1.1″0.8″1.1″1.7″1.9″2.9″3.6″3.9″2.6″1.9″1.5″

Snowfall

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

The snowy period of the year lasts for 7.1 months, from September 30 to May 3, with a sliding 31-day snowfall of at least 1.0 inches. The month with the most snow at Dillingham Airport is January, with an average snowfall of 10.9 inches.

The snowless period of the year lasts for 4.9 months, from May 3 to September 30. The least snow falls around July 23, with an average total accumulation of 0.0 inches.

Average Monthly Snowfall at Dillingham Airport

Average Monthly Snowfall at Dillingham AirportsnowsnowJanFebMarAprMayJunJulAugSepOctNovDec0 in0 in5 in5 in10 in10 in15 in15 in20 in20 inJan 1311.0 inJan 1311.0 inJul 230.0 inJul 230.0 inSep 301.0 inSep 301.0 inMay 31.0 inMay 31.0 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 10.9″8.5″6.6″3.0″0.2″0.0″0.0″0.0″0.2″3.1″8.7″10.5″

The length of the day at Dillingham Airport varies extremely over the course of the year. In 2024, the shortest day is December 21, with 6 hours, 10 minutes of daylight; the longest day is June 20, with 18 hours, 31 minutes of daylight.

Hours of Daylight and Twilight at Dillingham Airport

Hours of Daylight and Twilight at Dillingham AirportJanFebMarAprMayJunJulAugSepOctNovDec0 hr24 hr4 hr20 hr8 hr16 hr12 hr12 hr16 hr8 hr20 hr4 hr24 hr0 hr12 hr, 12 minMar 1912 hr, 12 minMar 1918 hr, 31 minJun 2018 hr, 31 minJun 2012 hr, 16 minSep 2212 hr, 16 minSep 226 hr, 10 minDec 216 hr, 10 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 7.1h9.3h11.9h14.6h17.0h18.4h17.6h15.3h12.7h10.1h7.7h6.3h

The earliest sunrise is at 5:19 AM on June 18, and the latest sunrise is 5 hours, 9 minutes later at 10:28 AM on December 26. The earliest sunset is at 4:35 PM on December 15, and the latest sunset is 7 hours, 16 minutes later at 11:51 PM on June 22.

Daylight saving time (DST) is observed at Dillingham Airport 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 Dillingham Airport

Sunrise & Sunset with Twilight and Daylight Saving Time at Dillingham AirportJanFebMarAprMayJunJulAugSepOctNovDec2 AM4 AM6 AM8 AM10 AM12 PM2 PM4 PM6 PM8 PM10 PM12 AM2 AMJun 185:19 AMJun 185:19 AM11:51 PMJun 2211:51 PMJun 22Dec 154:35 PMDec 154:35 PM10:28 AMDec 2610:28 AMDec 26Mar 10DSTMar 10DSTDSTNov 3DSTNov 3daynightnightnightnightSolarMidnightSolarMidnightSolarNoonSunriseSunsetNowNow
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 Dillingham Airport

Solar Elevation and Azimuth at Dillingham AirportJanFebMarAprMayJunJulAugSepOctNovDec12 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 AM00010101010202030304040500001010102020203030404050854NowNow
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 Dillingham Airport

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 Dillingham Airport, 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 Dillingham Airport

Humidity Comfort Levels at Dillingham AirportJanFebMarAprMayJunJulAugSepOctNovDec0%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%Feb 110%Feb 110%Aug 120%Aug 120%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 Dillingham Airport experiences significant seasonal variation over the course of the year.

The windier part of the year lasts for 6.6 months, from September 25 to April 13, with average wind speeds of more than 11.5 miles per hour. The windiest month of the year at Dillingham Airport is January, with an average hourly wind speed of 14.3 miles per hour.

The calmer time of year lasts for 5.4 months, from April 13 to September 25. The calmest month of the year at Dillingham Airport is July, with an average hourly wind speed of 8.7 miles per hour.

Average Wind Speed at Dillingham Airport

Average Wind Speed at Dillingham AirportwindywindyJanFebMarAprMayJunJulAugSepOctNovDec0 mph0 mph2 mph2 mph4 mph4 mph6 mph6 mph8 mph8 mph10 mph10 mph12 mph12 mph14 mph14 mph16 mph16 mph18 mph18 mph20 mph20 mph22 mph22 mphJan 2614.6 mphJan 2614.6 mphJun 298.4 mphJun 298.4 mphSep 2511.5 mphSep 2511.5 mphApr 1311.5 mphApr 1311.5 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) 14.314.213.211.29.98.88.79.410.911.712.513.5

The predominant average hourly wind direction at Dillingham Airport varies throughout the year.

The wind is most often from the east for 1.4 months, from May 1 to June 14, with a peak percentage of 34% on May 26. The wind is most often from the south for 1.7 months, from June 14 to August 5, with a peak percentage of 35% on July 27. The wind is most often from the north for 7.7 months, from September 11 to May 1, with a peak percentage of 44% on January 1.

Wind Direction at Dillingham Airport

Wind Direction at Dillingham AirportNESWNJanFebMarAprMayJunJulAugSepOctNovDec0%100%20%80%40%60%60%40%80%20%100%0%NowNowwestsoutheastnorth
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).

Dillingham 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 water temperature experiences significant seasonal variation over the course of the year.

The time of year with warmer water lasts for 2.4 months, from July 9 to September 23, with an average temperature above 51°F. The month of the year at Dillingham Airport with the warmest water is August, with an average temperature of 55°F.

The time of year with cooler water lasts for 5.5 months, from November 19 to May 2, with an average temperature below 36°F. The month of the year at Dillingham Airport with the coolest water is March, with an average temperature of 31°F.

Average Water Temperature at Dillingham Airport

Average Water Temperature at Dillingham AirportwarmcoolcoolJanFebMarAprMayJunJulAugSepOctNovDec25°F25°F30°F30°F35°F35°F40°F40°F45°F45°F50°F50°F55°F55°F60°F60°FAug 1755°FAug 1755°F31°FMar 1131°FMar 11Jul 951°FJul 951°FSep 2351°FSep 2351°FNov 1936°FNov 1936°FMay 236°FMay 236°FNowNow
The daily average water temperature (purple line), with 25th to 75th and 10th to 90th percentile bands.
WaterJanFebMarAprMayJunJulAugSepOctNovDec
Temperature 32°F31°F31°F33°F39°F46°F52°F55°F52°F44°F37°F33°F

To characterize how pleasant the weather is at Dillingham Airport 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 Dillingham Airport for general outdoor tourist activities is from mid July to mid August, with a peak score in the last week of July.

Tourism Score at Dillingham Airport

Tourism Score at Dillingham AirportJanFebMarAprMayJunJulAugSepOctNovDec002244668810102.32.30.00.0NowNowtemperaturetemperature cloudscloudsprecipitationprecipitation
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.

Beach/Pool Score at Dillingham Airport

Beach/Pool Score at Dillingham AirportJanFebMarAprMayJunJulAugSepOctNovDec002244668810100.10.10.00.0NowNow cloudscloudsprecipitationprecipitation
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 Dillingham Airport typically lasts for 4.1 months (127 days), from around May 19 to around September 23, rarely starting before April 30 or after June 6, and rarely ending before September 4 or after October 10.

Time Spent in Various Temperature Bands and the Growing Season at Dillingham Airport

Time Spent in Various Temperature Bands and the Growing Season at Dillingham Airportgrowing seasonJanFebMarAprMayJunJulAugSepOctNovDec0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%May 1950%May 1950%Sep 2350%Sep 2350%Jun 690%Jun 690%Sep 490%Sep 490%Apr 3010%Apr 3010%Oct 1010%Oct 1010%0%Dec 30%Dec 3Jul 14100%Jul 14100%NowNowfrigidfreezingvery coldcoldcool
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 Dillingham Airport should appear around June 19, only rarely appearing before June 3 or after July 11.

Growing Degree Days at Dillingham Airport

Growing Degree Days at Dillingham AirportJanFebMarAprMayJunJulAugSepOctNovDec0°F0°F100°F100°F200°F200°F300°F300°F400°F400°F500°F500°F600°F600°F700°F700°FJun 1990°FJun 1990°FDec 31486°FDec 31486°FNowNow
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 3.0 months, from April 28 to July 30, with an average daily incident shortwave energy per square meter above 4.4 kWh. The brightest month of the year at Dillingham Airport is June, with an average of 5.4 kWh.

The darker period of the year lasts for 4.0 months, from October 20 to February 18, with an average daily incident shortwave energy per square meter below 1.3 kWh. The darkest month of the year at Dillingham Airport is December, with an average of 0.3 kWh.

Average Daily Incident Shortwave Solar Energy at Dillingham Airport

Average Daily Incident Shortwave Solar Energy at Dillingham AirportbrightdarkdarkJanFebMarAprMayJunJulAugSepOctNovDec0 kWh0 kWh1 kWh1 kWh2 kWh2 kWh3 kWh3 kWh4 kWh4 kWh5 kWh5 kWh6 kWh6 kWh7 kWh7 kWh8 kWh8 kWhJun 75.5 kWhJun 75.5 kWhDec 190.2 kWhDec 190.2 kWhApr 284.4 kWhApr 284.4 kWhJul 304.4 kWhJul 304.4 kWhOct 201.3 kWhOct 201.3 kWhFeb 181.3 kWhFeb 181.3 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) 0.41.22.64.04.95.44.83.92.61.40.60.3

For the purposes of this report, the geographical coordinates of Dillingham Airport are 59.041 deg latitude, -158.512 deg longitude, and 82 ft elevation.

The topography within 2 miles of Dillingham Airport contains only modest variations in elevation, with a maximum elevation change of 154 feet and an average elevation above sea level of 52 feet. Within 10 miles also contains only modest variations in elevation (322 feet). Within 50 miles contains only modest variations in elevation (3,589 feet).

The area within 2 miles of Dillingham Airport is covered by shrubs (40%), water (35%), and herbaceous vegetation (22%), within 10 miles by shrubs (39%) and herbaceous vegetation (31%), and within 50 miles by shrubs (52%) and water (27%).

This report illustrates the typical weather at Dillingham 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

Dillingham 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 are Manokotak Airport, New Stuyahok Airport, Egegik Airport, Koliganek Airport, Togiak Airport, King Salmon Airport, and Igiugig 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.