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Climate and Average Weather Year Round at Sitka Rocky Gutierrez Airport Alaska, United States

At Sitka Rocky Gutierrez Airport, the summers are cool and mostly cloudy; the winters are long, very cold, windy, and overcast; and it is wet year round. Over the course of the year, the temperature typically varies from 33°F to 62°F and is rarely below 22°F or above 67°F.

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

Climate at Sitka Rocky Gutierrez Airport

very coldcoldcoolcoldvery coldJanFebMarAprMayJunJulAugSepOctNovDecNowNow38%38%21%21%overcastclearprecipitation: 12.3 inprecipitation: 12.3 in3.3 in3.3 inmuggy: 0%muggy: 0%0%0%drydrytourism score: 3.7tourism score: 3.70.00.0
Sitka Rocky Gutierrez Airport weather by month. Click on each chart for more information.

The warm season lasts for 3.0 months, from June 14 to September 16, with an average daily high temperature above 58°F. The hottest month of the year at Sitka Rocky Gutierrez Airport is August, with an average high of 62°F and low of 53°F.

The cool season lasts for 4.5 months, from November 10 to March 24, with an average daily high temperature below 45°F. The coldest month of the year at Sitka Rocky Gutierrez Airport is January, with an average low of 34°F and high of 41°F.

Average High and Low Temperature at Sitka Rocky Gutierrez Airport

Average High and Low Temperature at Sitka Rocky Gutierrez AirportwarmcoolcoolJanFebMarAprMayJunJulAugSepOctNovDec0°F0°F10°F10°F20°F20°F30°F30°F40°F40°F50°F50°F60°F60°F70°F70°F80°F80°F90°F90°F100°F100°FFeb 2341°FFeb 2341°FAug 1162°FAug 1162°F33°F33°F54°F54°FJun 1458°FJun 1458°FSep 1658°FSep 1658°FNov 1045°FNov 1045°F49°F49°F49°F49°F38°F38°F35°F35°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 41°F41°F44°F48°F54°F58°F61°F62°F58°F51°F44°F41°F
Temp. 37°F37°F38°F43°F48°F53°F56°F57°F53°F47°F40°F37°F
Low 34°F33°F35°F38°F44°F49°F53°F53°F49°F43°F37°F34°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 Sitka Rocky Gutierrez Airport

Average Hourly Temperature at Sitka Rocky Gutierrez 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 AMNowNowvery coldvery coldcoldcoolcool
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.

Ålesund, Norway (3,930 miles away) is the far-away foreign place with temperatures most similar to Sitka Rocky Gutierrez Airport (view comparison).

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At Sitka Rocky Gutierrez 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 Sitka Rocky Gutierrez Airport begins around April 18 and lasts for 5.1 months, ending around September 22.

The clearest month of the year at Sitka Rocky Gutierrez Airport is August, during which on average the sky is clear, mostly clear, or partly cloudy 37% of the time.

The cloudier part of the year begins around September 22 and lasts for 6.9 months, ending around April 18.

The cloudiest month of the year at Sitka Rocky Gutierrez Airport is January, during which on average the sky is overcast or mostly cloudy 77% of the time.

Cloud Cover Categories at Sitka Rocky Gutierrez Airport

Cloud Cover Categories at Sitka Rocky Gutierrez AirportclearercloudiercloudierJanFebMarAprMayJunJulAugSepOctNovDec0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%Aug 1138%Aug 1138%Jan 2521%Jan 2521%Apr 1830%Apr 1830%Sep 2230%Sep 2230%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 77%73%70%70%66%66%65%63%69%75%75%76%
Clearer 23%27%30%30%34%34%35%37%31%25%25%24%

A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. The chance of wet days at Sitka Rocky Gutierrez Airport varies significantly throughout the year.

The wetter season lasts 7.0 months, from August 21 to March 23, with a greater than 53% chance of a given day being a wet day. The month with the most wet days at Sitka Rocky Gutierrez Airport is October, with an average of 21.8 days with at least 0.04 inches of precipitation.

The drier season lasts 5.0 months, from March 23 to August 21. The month with the fewest wet days at Sitka Rocky Gutierrez Airport is June, with an average of 11.4 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. The month with the most days of rain alone at Sitka Rocky Gutierrez Airport is October, with an average of 21.7 days. Based on this categorization, the most common form of precipitation throughout the year is rain alone, with a peak probability of 71% on October 9.

Daily Chance of Precipitation at Sitka Rocky Gutierrez Airport

Daily Chance of Precipitation at Sitka Rocky Gutierrez AirportwetwetdryJanFebMarAprMayJunJulAugSepOctNovDec0%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%Oct 971%Oct 971%Jun 2036%Jun 2036%Aug 2153%Aug 2153%Mar 2353%Mar 2353%NowNowrainmixedsnow
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 17.0d14.3d15.3d14.7d12.5d11.4d12.5d15.8d19.3d21.7d19.2d18.5d
Mixed 1.6d1.5d1.0d0.1d0.0d0.0d0.0d0.0d0.0d0.1d0.7d1.2d
Snow 0.5d0.3d0.1d0.0d0.0d0.0d0.0d0.0d0.0d0.0d0.2d0.3d
Any 19.1d16.1d16.4d14.8d12.5d11.4d12.5d15.8d19.3d21.8d20.1d20.1d

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. Sitka Rocky Gutierrez Airport experiences extreme seasonal variation in monthly rainfall.

Rain falls throughout the year at Sitka Rocky Gutierrez Airport. The month with the most rain at Sitka Rocky Gutierrez Airport is October, with an average rainfall of 12.1 inches.

The month with the least rain at Sitka Rocky Gutierrez Airport is June, with an average rainfall of 3.4 inches.

Average Monthly Rainfall at Sitka Rocky Gutierrez Airport

Average Monthly Rainfall at Sitka Rocky Gutierrez AirportJanFebMarAprMayJunJulAugSepOctNovDec0 in0 in5 in5 in10 in10 in15 in15 in20 in20 inOct 812.3 inOct 812.3 inJun 83.3 inJun 83.3 inNowNow
The average rainfall (solid line) accumulated over the course of a sliding 31-day period centered on the day in question, with 25th to 75th and 10th to 90th percentile bands. The thin dotted line is the corresponding average snowfall.
JanFebMarAprMayJunJulAugSepOctNovDec
Rainfall 9.0″7.2″6.2″5.3″3.9″3.4″3.9″6.5″10.7″12.1″10.5″9.9″

Snowfall

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

The snowy period of the year lasts for 4.0 months, from November 20 to March 20, with a sliding 31-day snowfall of at least 1.0 inches. The month with the most snow at Sitka Rocky Gutierrez Airport is January, with an average snowfall of 2.6 inches.

The snowless period of the year lasts for 8.0 months, from March 20 to November 20. The least snow falls around July 12, with an average total accumulation of 0.0 inches.

Average Monthly Snowfall at Sitka Rocky Gutierrez Airport

Average Monthly Snowfall at Sitka Rocky Gutierrez AirportsnowsnowJanFebMarAprMayJunJulAugSepOctNovDec0 in0 in2 in2 in4 in4 in6 in6 in8 in8 in10 in10 in12 in12 inJan 252.8 inJan 252.8 inJul 120.0 inJul 120.0 inNov 201.0 inNov 201.0 inMar 201.0 inMar 201.0 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 2.6″2.2″1.2″0.1″0.0″0.0″0.0″0.0″0.0″0.1″0.8″1.5″

The length of the day at Sitka Rocky Gutierrez Airport varies extremely over the course of the year. In 2024, the shortest day is December 21, with 6 hours, 42 minutes of daylight; the longest day is June 20, with 17 hours, 54 minutes of daylight.

Hours of Daylight and Twilight at Sitka Rocky Gutierrez Airport

Hours of Daylight and Twilight at Sitka Rocky Gutierrez AirportJanFebMarAprMayJunJulAugSepOctNovDec0 hr24 hr4 hr20 hr8 hr16 hr12 hr12 hr16 hr8 hr20 hr4 hr24 hr0 hr12 hr, 11 minMar 1912 hr, 11 minMar 1917 hr, 54 minJun 2017 hr, 54 minJun 2012 hr, 15 minSep 2212 hr, 15 minSep 226 hr, 42 minDec 216 hr, 42 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 7.5h9.5h11.9h14.4h16.6h17.8h17.1h15.1h12.7h10.3h8.0h6.8h

The earliest sunrise is at 4:05 AM on June 17, and the latest sunrise is 4 hours, 35 minutes later at 8:40 AM on December 27. The earliest sunset is at 3:18 PM on December 14, and the latest sunset is 6 hours, 42 minutes later at 10:00 PM on June 23.

Daylight saving time (DST) is observed at Sitka Rocky Gutierrez 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 Sitka Rocky Gutierrez Airport

Sunrise & Sunset with Twilight and Daylight Saving Time at Sitka Rocky Gutierrez AirportJanFebMarAprMayJunJulAugSepOctNovDec12 AM2 AM4 AM6 AM8 AM10 AM12 PM2 PM4 PM6 PM8 PM10 PM12 AMJun 174:05 AMJun 174:05 AM10:00 PMJun 2310:00 PMJun 23Dec 143:18 PMDec 143:18 PM8:40 AMDec 278:40 AMDec 27Mar 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 Sitka Rocky Gutierrez Airport

Solar Elevation and Azimuth at Sitka Rocky Gutierrez 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 AM000101010102020303040405000010101020202030304040501056NowNow
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 Sitka Rocky Gutierrez 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 Sitka Rocky Gutierrez 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 Sitka Rocky Gutierrez Airport

Humidity Comfort Levels at Sitka Rocky Gutierrez AirportJanFebMarAprMayJunJulAugSepOctNovDec0%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%Feb 140%Feb 140%Sep 20%Sep 20%NowNowdrydrycomfortablecomfortable
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 Sitka Rocky Gutierrez Airport experiences significant seasonal variation over the course of the year.

The windier part of the year lasts for 7.0 months, from September 21 to April 21, with average wind speeds of more than 11.0 miles per hour. The windiest month of the year at Sitka Rocky Gutierrez Airport is December, with an average hourly wind speed of 14.1 miles per hour.

The calmer time of year lasts for 5.0 months, from April 21 to September 21. The calmest month of the year at Sitka Rocky Gutierrez Airport is July, with an average hourly wind speed of 7.9 miles per hour.

Average Wind Speed at Sitka Rocky Gutierrez Airport

Average Wind Speed at Sitka Rocky Gutierrez AirportwindywindyJanFebMarAprMayJunJulAugSepOctNovDec0 mph0 mph5 mph5 mph10 mph10 mph15 mph15 mph20 mph20 mphDec 514.2 mphDec 514.2 mphJul 177.9 mphJul 177.9 mphSep 2111.0 mphSep 2111.0 mphApr 2111.0 mphApr 2111.0 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) 13.912.912.311.19.68.47.98.510.612.713.714.1

The predominant average hourly wind direction at Sitka Rocky Gutierrez Airport varies throughout the year.

The wind is most often from the south for 2.0 months, from April 5 to June 4; for 3.0 months, from August 4 to November 5; and for 1.0 weeks, from December 3 to December 10, with a peak percentage of 43% on October 4. The wind is most often from the west for 2.0 months, from June 4 to August 4, with a peak percentage of 42% on July 14. The wind is most often from the east for 4.0 weeks, from November 5 to December 3 and for 3.8 months, from December 10 to April 5, with a peak percentage of 36% on November 25.

Wind Direction at Sitka Rocky Gutierrez Airport

Wind Direction at Sitka Rocky Gutierrez AirportESWSEEJanFebMarAprMayJunJulAugSepOctNovDec0%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).

Sitka Rocky Gutierrez 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 some seasonal variation over the course of the year.

The time of year with warmer water lasts for 2.4 months, from July 6 to September 20, with an average temperature above 52°F. The month of the year at Sitka Rocky Gutierrez Airport with the warmest water is August, with an average temperature of 55°F.

The time of year with cooler water lasts for 4.5 months, from December 18 to May 3, with an average temperature below 44°F. The month of the year at Sitka Rocky Gutierrez Airport with the coolest water is March, with an average temperature of 42°F.

Average Water Temperature at Sitka Rocky Gutierrez Airport

Average Water Temperature at Sitka Rocky Gutierrez AirportwarmcoolJanFebMarAprMayJunJulAugSepOctNovDec40°F40°F45°F45°F50°F50°F55°F55°F60°F60°FAug 1355°FAug 1355°F42°FMar 1042°FMar 10Jul 652°FJul 652°FSep 2052°FSep 2052°FDec 1844°FDec 1844°FMay 344°FMay 344°F
The daily average water temperature (purple line), with 25th to 75th and 10th to 90th percentile bands.
WaterJanFebMarAprMayJunJulAugSepOctNovDec
Temperature 43°F42°F42°F43°F46°F50°F53°F55°F53°F49°F46°F45°F

To characterize how pleasant the weather is at Sitka Rocky Gutierrez 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 Sitka Rocky Gutierrez 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 Sitka Rocky Gutierrez Airport

Tourism Score at Sitka Rocky Gutierrez AirportJanFebMarAprMayJunJulAugSepOctNovDec002244668810103.73.70.00.0NowNowtemperaturetemperature 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. Based on this score, the best time of year to visit Sitka Rocky Gutierrez Airport for hot-weather activities is from early to mid August.

Beach/Pool Score at Sitka Rocky Gutierrez Airport

Beach/Pool Score at Sitka Rocky Gutierrez AirportJanFebMarAprMayJunJulAugSepOctNovDec002244668810100.10.10.00.0NowNowtemperaturetemperature 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 Sitka Rocky Gutierrez Airport typically lasts for 6.9 months (211 days), from around April 7 to around November 4, rarely starting before March 18 or after April 26, and rarely ending before October 15 or after November 30.

Time Spent in Various Temperature Bands and the Growing Season at Sitka Rocky Gutierrez Airport

Time Spent in Various Temperature Bands and the Growing Season at Sitka Rocky Gutierrez Airportgrowing seasonJanFebMarAprMayJunJulAugSepOctNovDec0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%50%Apr 750%Apr 750%Nov 450%Nov 490%Apr 2690%Apr 2690%Oct 1590%Oct 1510%Mar 1810%Mar 1810%Nov 3010%Nov 300%Jan 310%Jan 31Jul 23100%Jul 23100%very 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 Sitka Rocky Gutierrez Airport should appear around June 15, only rarely appearing before May 30 or after July 2.

Growing Degree Days at Sitka Rocky Gutierrez Airport

Growing Degree Days at Sitka Rocky Gutierrez AirportJanFebMarAprMayJunJulAugSepOctNovDec0°F0°F100°F100°F200°F200°F300°F300°F400°F400°F500°F500°F600°F600°F700°F700°F800°F800°F900°F900°FJun 1590°FJun 1590°FDec 31692°FDec 31692°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 3.1 months, from May 5 to August 9, with an average daily incident shortwave energy per square meter above 4.3 kWh. The brightest month of the year at Sitka Rocky Gutierrez Airport is June, with an average of 5.2 kWh.

The darker period of the year lasts for 4.3 months, from October 13 to February 22, with an average daily incident shortwave energy per square meter below 1.3 kWh. The darkest month of the year at Sitka Rocky Gutierrez Airport is December, with an average of 0.3 kWh.

Average Daily Incident Shortwave Solar Energy at Sitka Rocky Gutierrez Airport

Average Daily Incident Shortwave Solar Energy at Sitka Rocky Gutierrez AirportbrightdarkdarkJanFebMarAprMayJunJulAugSepOctNovDec0 kWh0 kWh1 kWh1 kWh2 kWh2 kWh3 kWh3 kWh4 kWh4 kWh5 kWh5 kWh6 kWh6 kWh7 kWh7 kWh8 kWh8 kWhJun 195.3 kWhJun 195.3 kWhDec 190.3 kWhDec 190.3 kWhMay 54.3 kWhMay 54.3 kWhAug 94.3 kWhAug 94.3 kWhOct 131.3 kWhOct 131.3 kWhFeb 221.3 kWhFeb 221.3 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) 0.41.02.13.44.75.24.93.92.41.20.50.3

For the purposes of this report, the geographical coordinates of Sitka Rocky Gutierrez Airport are 57.047 deg latitude, -135.362 deg longitude, and 10 ft elevation.

The topography within 2 miles of Sitka Rocky Gutierrez Airport contains very significant variations in elevation, with a maximum elevation change of 1,463 feet and an average elevation above sea level of 38 feet. Within 10 miles contains very significant variations in elevation (4,806 feet). Within 50 miles also contains extreme variations in elevation (58,990 feet).

The area within 2 miles of Sitka Rocky Gutierrez Airport is covered by water (73%) and trees (15%), within 10 miles by water (51%) and trees (37%), and within 50 miles by water (62%) and trees (27%).

This report illustrates the typical weather at Sitka Rocky Gutierrez 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

Sitka Rocky Gutierrez 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 Angoon Seaplane Base, Hoonah Airport, Gustavus Airport, Kake Airport, and Juneau International 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.