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May Weather at Sparrevohn LRRS Airport Alaska, United States

Daily high temperatures increase by 12°F, from 46°F to 57°F, rarely falling below 35°F or exceeding 68°F.

Daily low temperatures increase by 10°F, from 32°F to 42°F, rarely falling below 23°F or exceeding 49°F.

For reference, on July 7, the hottest day of the year, temperatures at Sparrevohn LRRS Airport typically range from 49°F to 63°F, while on January 17, the coldest day of the year, they range from 3°F to 18°F.

Average High and Low Temperature in May at Sparrevohn LRRS Airport

The daily average high (red line) and low (blue line) temperature, with 25th to 75th and 10th to 90th percentile bands. The thin dotted lines are the corresponding average perceived temperatures.

The figure below shows you a compact characterization of the hourly average temperatures for the quarter of the year centered on May. The horizontal axis is the day, the vertical axis is the hour of the day, and the color is the average temperature for that hour and day.

Average Hourly Temperature in May at Sparrevohn LRRS Airport

Average Hourly Temperature in May at Sparrevohn LRRS AirportMay112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030313112 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 AMAprJunfreezingvery 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 average hourly temperature, color coded into bands. The shaded overlays indicate night and civil twilight.

Arjeplog, Sweden (3,649 miles away) is the far-away foreign place with temperatures most similar to Sparrevohn LRRS Airport (view comparison).

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The month of May at Sparrevohn LRRS Airport experiences essentially constant cloud cover, with the percentage of time that the sky is overcast or mostly cloudy remaining about 64% throughout the month. The lowest chance of overcast or mostly cloudy conditions is 63% on May 15.

The clearest day of the month is May 15, with clear, mostly clear, or partly cloudy conditions 37% of the time.

For reference, on July 30, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 71%, while on January 20, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 38%.

Cloud Cover Categories in May at Sparrevohn LRRS Airport

Cloud Cover Categories in May at Sparrevohn LRRS AirportMay11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%AprJunJul 3029%Jul 3029%May 135%May 135%May 3136%May 3136%May 1137%May 1137%May 2136%May 2136%clearmostly 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.

A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. At Sparrevohn LRRS Airport, the chance of a wet day over the course of May is very rapidly increasing, starting the month at 17% and ending it at 29%.

For reference, the year's highest daily chance of a wet day is 46% on August 5, and its lowest chance is 13% on March 29.

Over the course of May at Sparrevohn LRRS Airport, the chance of a day with only rain increases from 13% to 28%, the chance of a day with mixed snow and rain decreases from 3% to 1%, and the chance of a day with only snow remains an essentially constant 1% throughout.

Probability of Precipitation in May at Sparrevohn LRRS Airport

Probability of Precipitation in May at Sparrevohn LRRS AirportMay11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310%0%5%5%10%10%15%15%20%20%25%25%30%30%35%35%AprJunMay 117%May 117%May 3129%May 3129%May 1121%May 1121%May 2126%May 2126%snowmixedrain
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 month and not just the monthly total, we show the rainfall accumulated over a sliding 31-day period centered around each day.

The average sliding 31-day rainfall during May at Sparrevohn LRRS Airport is rapidly increasing, starting the month at 0.9 inches, when it rarely exceeds 1.8 inches or falls below 0.2 inches, and ending the month at 2.1 inches, when it rarely exceeds 3.5 inches or falls below 0.8 inches.

Average Monthly Rainfall in May at Sparrevohn LRRS Airport

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.

Snowfall

As with rainfall, we consider the snowfall accumulated over a sliding 31-day period centered around each day.

The average sliding 31-day snowfall during May at Sparrevohn LRRS Airport is decreasing, starting the month at 1.6 inches, when it rarely exceeds 5.0 inches, and ending the month at 0.2 inches, when it rarely exceeds 0.7 inches.

Average Monthly Snowfall in May at Sparrevohn LRRS Airport

Average Monthly Snowfall in May at Sparrevohn LRRS AirportMay11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310 in0 in1 in1 in2 in2 in3 in3 in4 in4 in5 in5 in6 in6 in7 in7 in8 in8 in9 in9 inAprJunMay 11.6 inMay 11.6 inMay 310.2 inMay 310.2 inMay 110.9 inMay 110.9 inMay 210.5 inMay 210.5 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.

Over the course of May at Sparrevohn LRRS Airport, the length of the day is very rapidly increasing. From the start to the end of the month, the length of the day increases by 2 hours, 24 minutes, implying an average daily increase of 4 minutes, 48 seconds, and weekly increase of 33 minutes, 39 seconds.

The shortest day of the month is May 1, with 16 hours, 17 minutes of daylight and the longest day is May 31, with 18 hours, 41 minutes of daylight.

Hours of Daylight and Twilight in May at Sparrevohn LRRS Airport

The number of hours during which the Sun is visible (black line). From bottom (most yellow) to top (most gray), the color bands indicate: full daylight, twilight (civil, nautical, and astronomical), and full night.

The latest sunrise of the month at Sparrevohn LRRS Airport is 6:11 AM on May 1 and the earliest sunrise is 1 hour, 12 minutes earlier at 5:00 AM on May 31.

The earliest sunset is 10:28 PM on May 1 and the latest sunset is 1 hour, 13 minutes later at 11:41 PM on May 31.

Daylight saving time is observed at Sparrevohn LRRS Airport during 2024, but it neither starts nor ends during May, so the entire month is in standard time.

For reference, on June 20, the longest day of the year, the Sun rises at 4:44 AM and sets 19 hours, 19 minutes later, at 12:03 AM, while on December 21, the shortest day of the year, it rises at 10:35 AM and sets 5 hours, 30 minutes later, at 4:05 PM.

Sunrise & Sunset with Twilight in May at Sparrevohn LRRS Airport

Sunrise & Sunset with Twilight in May at Sparrevohn LRRS AirportMay11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031314 AM6 AM8 AM10 AM12 PM2 PM4 PM6 PM8 PM10 PM12 AM2 AMAprJun5:00 AM5:00 AMMay 3111:41 PMMay 3111:41 PM6:11 AM6:11 AMMay 110:28 PMMay 110:28 PM5:44 AM5:44 AM5:19 AM5:19 AMMay 1611:07 PMMay 1611:07 PMSolarMidnightSolarMidnightSolarNoonSunriseSunset
The solar day over the course of May. 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 figure below presents a compact representation of the sun's elevation (the angle of the sun above the horizon) and azimuth (its compass bearing) for every hour of every day in the reporting period. The horizontal axis is the day of the year and the vertical axis is the hour of the day. For a given day and hour of that day, the background color indicates the azimuth of the sun at that moment. The black isolines are contours of constant solar elevation.

Solar Elevation and Azimuth in May at Sparrevohn LRRS Airport

Solar Elevation and Azimuth in May at Sparrevohn LRRS AirportMay112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030313112 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 AMAprJun001010202020303040405000010102020303030404050
northeastsouthwest
Solar elevation and azimuth over the course of May 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 May 2024. The horizontal axis is the day, the vertical axis is the hour of the day, and the colored areas indicate when the moon is above the horizon. The vertical gray bars (new Moons) and blue bars (full Moons) indicate key Moon phases. The label associated with each bar indicates the date and time that the phase is obtained, and the companion time labels indicate the rise and set times of the Moon for the nearest time interval in which the moon is above the horizon.

Moon Rise, Set & Phases in May at Sparrevohn LRRS Airport

Moon Rise, Set & Phases in May at Sparrevohn LRRS AirportMay112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030313112 AM12 AM4 AM4 AM8 AM8 AM12 PM12 PM4 PM4 PM8 PM8 PM12 AM12 AMAprJunApr 810:22 AMApr 810:22 AMApr 233:50 PMApr 233:50 PMMay 77:23 PMMay 77:23 PMMay 235:54 AMMay 235:54 AMJun 64:38 AMJun 64:38 AMJun 215:09 PMJun 215:09 PM7:25 AM7:25 AM10:12 PM10:12 PM10:34 PM10:34 PM6:24 AM6:24 AM5:32 AM5:32 AM11:17 PM11:17 PM11:31 PM11:31 PM4:33 AM4:33 AM3:44 AM3:44 AM
The time in which the moon is above the horizon (light blue area), with new moons (dark gray lines) and full moons (blue lines) indicated. The shaded overlays indicate night and civil twilight.
May 2024IlluminationMoonriseMoonsetMoonriseMeridian PassingDistance
1
50%5:50 AMSE12:17 PMSW-9:03 AMS231,617 mi
2
36%5:47 AMSE2:09 PMWSW-9:57 AMS229,347 mi
3
25%5:44 AMESE3:57 PMWSW-10:48 AMS227,463 mi
4
15%5:41 AME5:42 PMW-11:38 AMS226,170 mi
5
7%5:38 AME7:29 PMWNW-12:26 PMS225,662 mi
6
2%5:35 AMENE9:20 PMWNW-1:16 PMS226,079 mi
7
0%5:32 AMNE11:17 PMNW-2:09 PMS227,469 mi
8
1%5:30 AMNE--3:04 PMS229,767 mi
9
5%-1:19 AMNNW5:29 AMNNE4:01 PMS232,793 mi
10
11%-3:19 AMNNW5:34 AMNNE4:59 PMS236,280 mi
11
18%-4:42 AMN6:16 AMN5:56 PMS239,915 mi
12
28%-4:59 AMNNW7:58 AMNNE6:50 PMS243,386 mi
13
37%-5:00 AMNNW9:47 AMNNE7:39 PMS246,426 mi
14
47%-4:58 AMNW11:28 AMNE8:25 PMS248,835 mi
15
50%-4:55 AMNW1:02 PMENE9:07 PMS250,484 mi
16
66%-4:52 AMWNW2:30 PMENE9:46 PMS251,318 mi
17
75%-4:49 AMWNW3:54 PME10:25 PMS251,349 mi
18
83%-4:46 AMW5:18 PME11:03 PMS250,645 mi
19
90%-4:43 AMW6:43 PMESE11:43 PMS249,321 mi
20
93%-4:40 AMWSW8:12 PMESE--
21
95%-4:37 AMSW9:48 PMSE12:25 AMS247,519 mi
22
99%-4:34 AMSW11:31 PMSE1:11 AMS245,393 mi
23
100%-4:33 AMSSW-2:02 AMS243,099 mi
24
99%1:21 AMSSE4:34 AMSSW-2:58 AMS240,773 mi
25
96%3:05 AMS4:50 AMS-3:58 AMS238,526 mi
26
90%3:54 AMSSE6:05 AMSSW-4:59 AMS236,432 mi
27
83%4:01 AMSSE8:00 AMSSW-6:00 AMS234,534 mi
28
73%4:01 AMSE9:57 AMSW-6:59 AMS232,849 mi
29
62%3:59 AMSE11:49 AMSW-7:53 AMS231,392 mi
30
50%3:56 AMESE1:35 PMWSW-8:44 AMS230,191 mi
31
39%3:54 AMESE3:18 PMW-9:32 AMS229,300 mi

We base the humidity comfort level on the dew point, as it determines whether perspiration will evaporate from the skin, thereby cooling the body. Lower dew points feel drier and higher dew points feel more humid. Unlike temperature, which typically varies significantly between night and day, dew point tends to change more slowly, so while the temperature may drop at night, a muggy day is typically followed by a muggy night.

The chance that a given day will be muggy at Sparrevohn LRRS Airport is essentially constant during May, remaining around 0% throughout.

Humidity Comfort Levels in May at Sparrevohn LRRS Airport

Humidity Comfort Levels in May at Sparrevohn LRRS AirportMay11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%AprJunMay 160%May 160%May 10%May 10%May 310%May 310%drydry
dry 55°F comfortable 60°F humid 65°F muggy 70°F oppressive 75°F miserable
The percentage of time spent at various humidity comfort levels, categorized by dew point.

This section discusses the wide-area hourly average wind vector (speed and direction) at 10 meters above the ground. The wind experienced at any given location is highly dependent on local topography and other factors, and instantaneous wind speed and direction vary more widely than hourly averages.

The average hourly wind speed at Sparrevohn LRRS Airport is gradually decreasing during May, decreasing from 5.2 miles per hour to 4.6 miles per hour over the course of the month.

For reference, on January 30, the windiest day of the year, the daily average wind speed is 7.2 miles per hour, while on July 12, the calmest day of the year, the daily average wind speed is 3.9 miles per hour.

Average Wind Speed in May at Sparrevohn LRRS Airport

The average of mean hourly wind speeds (dark gray line), with 25th to 75th and 10th to 90th percentile bands.

The hourly average wind direction at Sparrevohn LRRS Airport throughout May is predominantly from the south, with a peak proportion of 45% on May 26.

Wind Direction in May at Sparrevohn LRRS Airport

Wind Direction in May at Sparrevohn LRRS AirportNSMay11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310%100%20%80%40%60%60%40%80%20%100%0%AprJunsoutheastnorthwest
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).

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 Sparrevohn LRRS Airport typically lasts for 4.1 months (127 days), from around May 15 to around September 18, rarely starting before April 27 or after June 2, and rarely ending before August 29 or after October 6.

During May at Sparrevohn LRRS Airport, the chance that a given day is within the growing season is very rapidly increasing rising from 16% to 88% over the course of the month.

Time Spent in Various Temperature Bands and the Growing Season in May at Sparrevohn LRRS Airport

Time Spent in Various Temperature Bands and the Growing Season in May at Sparrevohn LRRS Airportgrowing seasonMay11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%AprJunMay 116%May 116%88%May 3188%May 31May 1139%May 1139%67%May 2167%May 21frigidfreezingvery coldcoldcoolcomfortable
frigid 15°F freezing 32°F very cold 45°F cold 55°F cool 65°F comfortable 75°F warm 85°F hot 95°F sweltering
The percentage of time spent in various temperature bands. The black line is the percentage chance that a given day is within the growing season.

Growing degree days are a measure of yearly heat accumulation used to predict plant and animal development, and defined as the integral of warmth above a base temperature, discarding any excess above a maximum temperature. In this report, we use a base of 50°F and a cap of 86°F.

The average accumulated growing degree days at Sparrevohn LRRS Airport are gradually increasing during May, increasing by 42°F, from 3°F to 45°F, over the course of the month.

Growing Degree Days in May at Sparrevohn LRRS Airport

Growing Degree Days in May at Sparrevohn LRRS AirportMay112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030313110°F10°F20°F20°F30°F30°F40°F40°F50°F50°F60°F60°F70°F70°F80°F80°FAprJunMay 13°FMay 13°FMay 3145°FMay 3145°FMay 119°FMay 119°FMay 2123°FMay 2123°F
The average growing degree days accumulated over the course of May, with 25th to 75th and 10th to 90th percentile bands.

This section discusses the total daily incident shortwave solar energy reaching the surface of the ground over a wide area, taking full account of seasonal variations in the length of the day, the elevation of the Sun above the horizon, and absorption by clouds and other atmospheric constituents. Shortwave radiation includes visible light and ultraviolet radiation.

The average daily incident shortwave solar energy at Sparrevohn LRRS Airport is gradually increasing during May, rising by 0.8 kWh, from 4.5 kWh to 5.3 kWh, over the course of the month.

Average Daily Incident Shortwave Solar Energy in May at Sparrevohn LRRS Airport

Average Daily Incident Shortwave Solar Energy in May at Sparrevohn LRRS AirportMay11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310 kWh0 kWh1 kWh1 kWh2 kWh2 kWh3 kWh3 kWh4 kWh4 kWh5 kWh5 kWh6 kWh6 kWh7 kWh7 kWh8 kWh8 kWhAprJunMay 14.5 kWhMay 14.5 kWhMay 315.3 kWhMay 315.3 kWhMay 114.8 kWhMay 114.8 kWhMay 215.1 kWhMay 215.1 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.

For the purposes of this report, the geographical coordinates of Sparrevohn LRRS Airport are 61.097 deg latitude, -155.574 deg longitude, and 1,440 ft elevation.

The topography within 2 miles of Sparrevohn LRRS Airport contains large variations in elevation, with a maximum elevation change of 2,228 feet and an average elevation above sea level of 1,711 feet. Within 10 miles also contains large variations in elevation (3,182 feet). Within 50 miles contains large variations in elevation (6,572 feet).

The area within 2 miles of Sparrevohn LRRS Airport is covered by shrubs (73%) and sparse vegetation (24%), within 10 miles by shrubs (78%) and sparse vegetation (18%), and within 50 miles by shrubs (65%) and trees (26%).

This report illustrates the typical weather at Sparrevohn LRRS 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

Sparrevohn LRRS 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.

In this case, the only station close and reliable enough to use as a fallback is Sleetmute 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.

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