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Average Weather at Anaktuvuk Pass Airport Alaska, United States

At Anaktuvuk Pass Airport, the summers are cool and mostly cloudy and the winters are long, frigid, dry, and partly cloudy. Over the course of the year, the temperature typically varies from -16°F to 62°F and is rarely below -37°F or above 71°F.

Climate Summary

frigidcoldcoolcoldfrigidJanFebMarAprMayJunJulAugSepOctNovDec47%47%32%32%overcastclearprecipitation: 2.5 inprecipitation: 2.5 in0.2 in0.2 inmuggy: 0%muggy: 0%drydrytourism score: 1.7tourism score: 1.70.00.0
Click on each chart for more information.

Based on the tourism score, the best time of year to visit Anaktuvuk Pass Airport for warm-weather activities is from late June to mid July.

Temperature

The warm season lasts for 3.1 months, from May 28 to August 30, with an average daily high temperature above 48°F. The hottest day of the year is July 3, with an average high of 62°F and low of 44°F.

The cold season lasts for 5.1 months, from October 30 to April 2, with an average daily high temperature below 9°F. The coldest day of the year is January 19, with an average low of -16°F and high of -4°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 Anaktuvuk Pass AirportJanFebMarAprMayJunJulAugSepOctNovDec12 AM4 AM8 AM12 PM4 PM8 PM12 AMfrigidfrigidvery coldcoldcoolfreezingvery coldfreezing
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.

Kogalym, Russia (3,144 miles away) and Tosontsengel, Mongolia (3,605 miles) are the far-away foreign places with temperatures most similar to Anaktuvuk Pass Airport (view comparison).

Clouds

At Anaktuvuk Pass 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 Anaktuvuk Pass Airport begins around December 30 and lasts for 3.1 months, ending around April 2. On March 5, the clearest day of the year, the sky is clear, mostly clear, or partly cloudy 47% of the time, and overcast or mostly cloudy 53% of the time.

The cloudier part of the year begins around April 2 and lasts for 8.9 months, ending around December 30. On July 31, the cloudiest day of the year, the sky is overcast or mostly cloudy 68% of the time, and clear, mostly clear, or partly cloudy 32% of the time.

Cloud Cover Categories

Cloud Cover Categories at Anaktuvuk Pass AirportclearercloudierJanFebMarAprMayJunJulAugSepOctNovDec0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%Mar 547%Mar 547%Jul 3132%Jul 3132%Dec 3039%Dec 3039%Apr 239%Apr 239%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 Anaktuvuk Pass Airport varies significantly throughout the year.

The wetter season lasts 3.4 months, from May 29 to September 11, with a greater than 23% chance of a given day being a wet day. The chance of a wet day peaks at 42% on July 25.

The drier season lasts 8.6 months, from September 11 to May 29. The smallest chance of a wet day is 4% on March 20.

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 Anaktuvuk Pass Airport changes throughout the year.

Snow alone is the most common for 7.7 months, from September 20 to May 12. The highest chance of a day with snow alone is 10% on September 28.

Rain alone is the most common for 4.3 months, from May 12 to September 20. The highest chance of a day with rain alone is 42% on July 24.

Daily Chance of Precipitation

Daily Chance of Precipitation at Anaktuvuk Pass AirportsnowrainsnowJanFebMarAprMayJunJulAugSepOctNovDec0%10%20%30%40%50%60%70%80%90%100%Jul 2542%Jul 2542%Mar 204%Mar 204%May 1214%May 1214%Sep 2020%Sep 2020%Jan 17%Jan 17%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. Anaktuvuk Pass Airport experiences significant seasonal variation in monthly rainfall.

The rainy period of the year lasts for 4.3 months, from May 13 to September 23, with a sliding 31-day rainfall of at least 0.5 inches. The most rain falls during the 31 days centered around July 18, with an average total accumulation of 2.5 inches.

The rainless period of the year lasts for 7.7 months, from September 23 to May 13. The least rain falls around February 26, with an average total accumulation of 0.0 inches.

Average Monthly Rainfall

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. Anaktuvuk Pass Airport experiences some seasonal variation in monthly liquid-equivalent snowfall.

The snowy period of the year lasts for 9.9 months, from August 15 to June 11, with a sliding 31-day liquid-equivalent snowfall of at least 0.1 inches. The most snow falls during the 31 days centered around September 30, with an average total liquid-equivalent accumulation of 0.5 inches.

The snowless period of the year lasts for 2.1 months, from June 11 to August 15. The least snow falls around July 13, with an average total liquid-equivalent accumulation of 0.0 inches.

Average Liquid-Equivalent Monthly Snowfall

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

Due to its extreme latitude, Anaktuvuk Pass Airport experiences polar day (also known as the midnight Sun) during the summer and polar night during the winter. These are periods of time in which the sun is continuously above or below the horizon for more than one day. The precise start and end dates of polar day and night vary from year to year and depend on the precise location and elevation of the observer, and the local topography.

In the summer at Anaktuvuk Pass Airport during 2017, the Sun is continuously above the horizon for 1.8 months, rising at 2:07 AM on May 25, and not setting again until 1:55 AM on July 18.

In the winter at Anaktuvuk Pass Airport during 2017, the Sun is continuously below the horizon for 4.1 weeks, setting at 1:20 PM on December 6, and not rising again until 12:54 PM on January 4.

Hours of Daylight and Twilight

Hours of Daylight and Twilight at Anaktuvuk Pass Airportpolar dayJanFebMarAprMayJunJulAugSepOctNovDec0 hr24 hr4 hr20 hr8 hr16 hr12 hr12 hr16 hr8 hr20 hr4 hr24 hr0 hr12 hr, 14 minMar 2012 hr, 14 minMar 2024 hr, 0 minJun 2024 hr, 0 minJun 2012 hr, 17 minSep 2212 hr, 17 minSep 220 minDec 210 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.

Daylight saving time (DST) is observed at Anaktuvuk Pass 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 Anaktuvuk Pass AirportJanFebMarAprMayJunJulAugSepOctNovDec2 AM4 AM6 AM8 AM10 AM12 PM2 PM4 PM6 PM8 PM10 PM12 AM2 AMMay 252:07 AMMay 252:07 AM1:55 AMJul 171:55 AMJul 171:20 PMDec 61:20 PMDec 6Jan 412:54 PMJan 412:54 PMMar 12DSTMar 12DSTDSTNov 5DSTNov 5daynightnightnightnightSolarMidnightSolarMidnightSolarNoon
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 Anaktuvuk Pass 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 Anaktuvuk Pass AirportJanFebMarAprMayJunJulAugSepOctNovDec0%10%20%30%40%50%60%70%80%90%100%Jul 30%Jul 30%drydry
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 Anaktuvuk Pass Airport experiences mild seasonal variation over the course of the year.

The windier part of the year lasts for 2.9 months, from December 18 to March 15, with average wind speeds of more than 6.3 miles per hour. The windiest day of the year is January 10, with an average hourly wind speed of 6.8 miles per hour.

The calmer time of year lasts for 9.1 months, from March 15 to December 18. The calmest day of the year is October 24, with an average hourly wind speed of 5.8 miles per hour.

Average Wind Speed

Average Wind Speed at Anaktuvuk Pass AirportwindyJanFebMarAprMayJunJulAugSepOctNovDec0 mph1 mph2 mph3 mph4 mph5 mph6 mph7 mph8 mph9 mph10 mph11 mph12 mphJan 106.8 mphJan 106.8 mphOct 245.8 mphOct 245.8 mphDec 186.3 mphDec 186.3 mphMar 156.3 mphMar 156.3 mph
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 Anaktuvuk Pass Airport varies throughout the year.

The wind is most often from the north for 3.3 weeks, from March 11 to April 3 and for 1.4 months, from May 25 to July 7, with a peak percentage of 40% on March 22. The wind is most often from the south for 1.7 months, from April 3 to May 25 and for 8.1 months, from July 7 to March 11, with a peak percentage of 38% on April 14.

Wind Direction

Wind Direction at Anaktuvuk Pass AirportSNSNSJanFebMarAprMayJunJulAugSepOctNovDec0%100%20%80%40%60%60%40%80%20%100%0%southnortheastwest
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).

Best Time of Year to Visit

To characterize how pleasant the weather is at Anaktuvuk Pass 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 Anaktuvuk Pass Airport for general outdoor tourist activities is from late June to mid July, with a peak score in the first week of July.

Tourism Score

Tourism Score at Anaktuvuk Pass AirportJanFebMarAprMayJunJulAugSepOctNovDec02468101.71.70.00.0 precipitationprecipitationcloudscloudstemperaturetemperaturetourism 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 Anaktuvuk Pass Airport for hot-weather activities is from late June to early July.

Beach/Pool Score

Beach/Pool Score at Anaktuvuk Pass AirportJanFebMarAprMayJunJulAugSepOctNovDec02468100.10.10.00.0precipitationprecipitationcloudsclouds
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 Anaktuvuk Pass Airport typically lasts for 1.8 months (55 days), from around June 14 to around August 7, rarely starting before May 27, or ending after August 29.

Time Spent in Various Temperature Bands and the Growing Season

Time Spent in Various Temperature Bands and the Growing Season at Anaktuvuk Pass AirportJanFebMarAprMayJunJulAugSepOctNovDec0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%Jun 1450%Jun 1450%Aug 750%Aug 750%May 2710%May 2710%Aug 2910%Aug 2910%0%Mar 60%Mar 6Jul 1187%Jul 1187%frigidvery coldcoldcoolfreezingcomfortable
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 Anaktuvuk Pass Airport should appear around June 26, only rarely appearing before June 17 or after July 9.

Growing Degree Days

Growing Degree Days at Anaktuvuk Pass AirportJanFebMarAprMayJunJulAugSepOctNovDec0°F50°F100°F150°F200°F250°F300°F350°F400°FJun 2690°FJun 2690°FDec 31305°FDec 31305°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 28, with an average daily incident shortwave energy per square meter above 4.6 kWh. The brightest day of the year is June 21, with an average of 5.7 kWh.

The darker period of the year lasts for 4.8 months, from October 7 to March 2, with an average daily incident shortwave energy per square meter below 1.1 kWh. The darkest day of the year is December 20, with an average of 0.0 kWh.

Average Daily Incident Shortwave Solar Energy

Average Daily Incident Shortwave Solar Energy at Anaktuvuk Pass AirportbrightdarkdarkJanFebMarAprMayJunJulAugSepOctNovDec0 kWh1 kWh2 kWh3 kWh4 kWh5 kWh6 kWh7 kWh8 kWhJun 215.7 kWhJun 215.7 kWhDec 200.0 kWhDec 200.0 kWhApr 254.6 kWhApr 254.6 kWhJul 284.6 kWhJul 284.6 kWhOct 71.1 kWhOct 71.1 kWhMar 21.1 kWhMar 21.1 kWh
The average daily shortwave solar energy reaching the ground per square meter (orange line), with 25th to 75th and 10th to 90th percentile bands.

Topography

For the purposes of this report, the geographical coordinates of Anaktuvuk Pass Airport are 68.137 deg latitude, -151.739 deg longitude, and 2,408 ft elevation.

The topography within 2 miles of Anaktuvuk Pass Airport contains large variations in elevation, with a maximum elevation change of 2,018 feet and an average elevation above sea level of 2,361 feet. Within 10 miles contains large variations in elevation (4,491 feet). Within 50 miles also contains extreme variations in elevation (6,778 feet).

The area within 2 miles of Anaktuvuk Pass Airport is covered by grassland (61%) and sparse vegetation (33%), within 10 miles by sparse vegetation (40%) and grassland (30%), and within 50 miles by grassland (32%) and shrubs (31%).

Data Sources

This report illustrates the typical weather at Anaktuvuk Pass 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

Anaktuvuk Pass 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.

There are no other weather stations in our network within 200 kilometers of this location. Consequently, in the case of missing or erroneous measurements from this station, we fall back on NASA's MERRA-2 modern-era reanalysis , adjusted according to typical seasonal and diurnal differences between this station and the wide-area MERRA-2 reconstructed values.

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.