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Average Weather at Platinum Airport Alaska, United States

At Platinum Airport, the summers are cool; the winters are long, freezing, and snowy; and it is windy and mostly cloudy year round. Over the course of the year, the temperature typically varies from 13°F to 57°F and is rarely below -9°F or above 64°F.

Climate Summary

freezingvery coldcoldcoolcoldvery coldfreezingJanFebMarAprMayJunJulAugSepOctNovDec45%45%29%29%overcastclearprecipitation: 3.4 inprecipitation: 3.4 in1.1 in1.1 inmuggy: 0%muggy: 0%0%0%drydrytourism score: 2.0tourism score: 2.00.00.0
Click on each chart for more information.

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

Temperature

The warm season lasts for 3.6 months, from June 3 to September 21, with an average daily high temperature above 50°F. The hottest day of the year is August 3, with an average high of 57°F and low of 49°F.

The cold season lasts for 4.4 months, from November 19 to April 2, with an average daily high temperature below 30°F. The coldest day of the year is January 18, with an average low of 13°F and high of 23°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 at Platinum AirportJanFebMarAprMayJunJulAugSepOctNovDec12 AM4 AM8 AM12 PM4 PM8 PM12 AMfreezingfreezingvery coldcoldcoolvery cold
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.

Polyarnyy, Russia (3,549 miles away) is the far-away foreign place with temperatures most similar to Platinum Airport (view comparison).

Clouds

At Platinum 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 Platinum Airport begins around September 5 and lasts for 2.2 months, ending around November 13. On October 15, the clearest day of the year, the sky is clear, mostly clear, or partly cloudy 45% of the time, and overcast or mostly cloudy 55% of the time.

The cloudier part of the year begins around November 13 and lasts for 9.8 months, ending around September 5. On December 18, 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 at Platinum AirportclearercloudiercloudierJanFebMarAprMayJunJulAugSepOctNovDec0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%Oct 1545%Oct 1545%Dec 1829%Dec 1829%Sep 537%Sep 537%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 at Platinum Airport varies throughout the year.

The wetter season lasts 5.5 months, from July 1 to December 18, with a greater than 29% chance of a given day being a wet day. The chance of a wet day peaks at 41% on August 24.

The drier season lasts 6.5 months, from December 18 to July 1. The smallest chance of a wet day is 17% on April 26.

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 Platinum Airport changes throughout the year.

Rain alone is the most common for 7.7 months, from April 9 to November 30. The highest chance of a day with rain alone is 41% on August 24.

Snow alone is the most common for 3.9 months, from November 30 to March 29. The highest chance of a day with snow alone is 12% on December 10.

Mixed snow and rain is the most common for 1.6 weeks, from March 29 to April 9. The highest chance of a day with mixed snow and rain is 10% on November 20.

Daily Chance of Precipitation

Daily Chance of Precipitation at Platinum AirportsnowrainsnowJanFebMarAprMayJunJulAugSepOctNovDec0%10%20%30%40%50%60%70%80%90%100%Aug 2441%Aug 2441%Apr 2617%Apr 2617%Nov 3029%Nov 3029%Jul 129%Jul 129%snowrainmixed
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. Platinum Airport experiences significant seasonal variation in monthly rainfall.

The rainy period of the year lasts for 11 months, from March 26 to March 4, with a sliding 31-day rainfall of at least 0.5 inches. The most rain falls during the 31 days centered around August 30, with an average total accumulation of 3.4 inches.

The rainless period of the year lasts for 3.0 weeks, from March 4 to March 26. The least rain falls around March 14, with an average total accumulation of 0.4 inches.

Average Monthly Rainfall

Average Monthly Rainfall at Platinum AirportrainrainJanFebMarAprMayJunJulAugSepOctNovDec0 in1 in2 in3 in4 in5 in6 inAug 303.4 inAug 303.4 inMar 140.4 inMar 140.4 inJan 270.6 inJan 270.6 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

We report snowfall in liquid-equivalent terms. The actual depth of new snowfall is typically between 5 and 10 times the liquid-equivalent amount, assuming the ground is frozen. Colder, drier snow tends to be on the higher end of that range and warmer, wetter snow on the lower end.

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

The snowy period of the year lasts for 6.8 months, from October 8 to May 2, with a sliding 31-day liquid-equivalent snowfall of at least 0.1 inches. The most snow falls during the 31 days centered around January 15, with an average total liquid-equivalent accumulation of 0.9 inches.

The snowless period of the year lasts for 5.2 months, from May 2 to October 8. The least snow falls around July 24, with an average total liquid-equivalent accumulation of 0.0 inches.

Average Liquid-Equivalent Monthly Snowfall

Average Liquid-Equivalent Monthly Snowfall at Platinum AirportsnowsnowJanFebMarAprMayJunJulAugSepOctNovDec0.0 in0.5 in1.0 in1.5 in2.0 in2.5 in3.0 in3.5 inJan 150.9 inJan 150.9 inJul 240.0 inJul 240.0 inOct 80.1 inOct 80.1 inMay 20.1 inMay 20.1 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 at Platinum Airport varies extremely over the course of the year. In 2017, 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

Hours of Daylight and Twilight at Platinum AirportJanFebMarAprMayJunJulAugSepOctNovDec0 hr24 hr4 hr20 hr8 hr16 hr12 hr12 hr16 hr8 hr20 hr4 hr24 hr0 hr12 hr, 10 minMar 2012 hr, 10 minMar 2018 hr, 31 minJun 2018 hr, 31 minJun 2012 hr, 12 minSep 2212 hr, 12 minSep 226 hr, 10 minDec 216 hr, 10 minDec 21nightnightday
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 5:33 AM on June 18, and the latest sunrise is 5 hours, 9 minutes later at 10:41 AM on December 27. The earliest sunset is at 4:49 PM on December 15, and the latest sunset is 7 hours, 16 minutes later at 12:04 AM on June 22.

Daylight saving time (DST) is observed at Platinum Airport during 2017, starting in the spring on March 12, lasting 7.8 months, and ending in the fall on November 5.

Sunrise & Sunset with Twilight and Daylight Saving Time

Sunrise & Sunset with Twilight and Daylight Saving Time at Platinum AirportJanFebMarAprMayJunJulAugSepOctNovDec2 AM4 AM6 AM8 AM10 AM12 PM2 PM4 PM6 PM8 PM10 PM12 AM2 AMJun 185:33 AMJun 185:33 AM12:04 AMJun 2212:04 AMJun 22Dec 154:49 PMDec 154:49 PM10:41 AMDec 2710:41 AMDec 27Mar 12DSTMar 12DSTDSTNov 5DSTNov 5daynightnightnightnightSolarMidnightSolarMidnightSolarNoonSunriseSunset
The solar day over the course of the year 2017. 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 at Platinum 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

Humidity Comfort Levels at Platinum AirportJanFebMarAprMayJunJulAugSepOctNovDec0%10%20%30%40%50%60%70%80%90%100%Dec 250%Dec 250%Jun 250%Jun 250%drydrycomfortablecomfortable
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 at Platinum Airport experiences significant seasonal variation over the course of the year.

The windier part of the year lasts for 7.2 months, from September 10 to April 16, with average wind speeds of more than 13.7 miles per hour. The windiest day of the year is December 14, with an average hourly wind speed of 17.4 miles per hour.

The calmer time of year lasts for 4.8 months, from April 16 to September 10. The calmest day of the year is June 27, with an average hourly wind speed of 10.0 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 at Platinum Airport varies throughout the year.

The wind is most often from the north for 1.6 months, from March 21 to May 10 and for 3.0 months, from September 4 to December 4, with a peak percentage of 42% on October 21. The wind is most often from the east for 1.3 months, from May 10 to June 18 and for 3.5 months, from December 4 to March 21, with a peak percentage of 33% on May 26. The wind is most often from the west for 2.5 months, from June 18 to September 4, with a peak percentage of 34% on August 8.

Wind Direction

Wind Direction at Platinum AirportENEWNEJanFebMarAprMayJunJulAugSepOctNovDec0%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

Platinum 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 2.7 months, from July 8 to September 28, with an average temperature above 49°F. The day of the year with the warmest water is August 17, with an average temperature of 53°F.

The time of year with cooler water lasts for 5.6 months, from November 24 to May 11, with an average temperature below 36°F. The day of the year with the coolest water is March 2, with an average temperature of 31°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 at Platinum 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 Platinum Airport for general outdoor tourist activities is from mid July to mid August, with a peak score in the first week of August.

Tourism Score

Tourism Score at Platinum AirportJanFebMarAprMayJunJulAugSepOctNovDec02468102.02.00.00.0 precipitationprecipitationcloudscloudstemperaturetemperature
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 Platinum Airport for hot-weather activities is from mid to late July.

Beach/Pool Score

Beach/Pool Score at Platinum AirportJanFebMarAprMayJunJulAugSepOctNovDec02468100.00.00.00.0precipitationprecipitationcloudscloudstemperaturetemperature
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 at Platinum Airport typically lasts for 4.6 months (140 days), from around May 16 to around October 3, rarely starting before April 29 or after June 2, and rarely ending before September 17 or after October 19.

Time Spent in Various Temperature Bands and the Growing Season

Time Spent in Various Temperature Bands and the Growing Season at Platinum Airportgrowing seasonJanFebMarAprMayJunJulAugSepOctNovDec0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%May 1650%May 1650%Oct 350%Oct 350%Jun 290%Jun 290%Sep 1790%Sep 1790%Apr 2910%Apr 2910%Oct 1910%Oct 1910%0%Dec 30%Dec 3Jul 21100%Jul 21100%frigidfreezingvery coldcoldcool
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 at Platinum Airport should appear around July 15, only rarely appearing before June 27 or after August 18.

Growing Degree Days

Growing Degree Days at Platinum AirportJanFebMarAprMayJunJulAugSepOctNovDec0°F50°F100°F150°F200°F250°F300°F350°F400°F450°FJul 1590°FJul 1590°FDec 31281°FDec 31281°F
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 3.1 months, from April 25 to July 27, with an average daily incident shortwave energy per square meter above 4.3 kWh. The brightest day of the year is June 5, with an average of 5.3 kWh.

The darker period of the year lasts for 4.0 months, from October 20 to February 19, with an average daily incident shortwave energy per square meter below 1.2 kWh. The darkest day of the year is December 20, with an average of 0.2 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.

Data Sources

This report illustrates the typical weather at Platinum 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

Platinum 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 Cape Newenham LRRS Airport, Togiak Airport, Bethel Airport, Manokotak Airport, and Dillingham 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 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.