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Climate and Average Weather Year Round in Valdez Alaska, United States

In Valdez, the summers are cool, wet, and overcast and the winters are long, freezing, snowy, windy, and mostly cloudy. Over the course of the year, the temperature typically varies from 20°F to 63°F and is rarely below 3°F or above 71°F.

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

Climate in Valdez

freezingvery coldcoldcoolcoldvery coldfreezingJanFebMarAprMayJunJulAugSepOctNovDecNowNow40%40%28%28%overcastclearprecipitation: 10.5 inprecipitation: 10.5 in3.3 in3.3 inmuggy: 0%muggy: 0%drydrytourism score: 2.1tourism score: 2.10.00.0
Valdez weather by month. Click on each chart for more information.

The warm season lasts for 3.6 months, from May 21 to September 9, with an average daily high temperature above 56°F. The hottest month of the year in Valdez is July, with an average high of 62°F and low of 49°F.

The cold season lasts for 4.0 months, from November 8 to March 9, with an average daily high temperature below 35°F. The coldest month of the year in Valdez is January, with an average low of 20°F and high of 28°F.

Average High and Low Temperature in Valdez

Average High and Low Temperature in ValdezwarmcoldcoldJanFebMarAprMayJunJulAugSepOctNovDec0°F0°F10°F10°F20°F20°F30°F30°F40°F40°F50°F50°F60°F60°F70°F70°F80°F80°F90°F90°F100°F100°FJan 1828°FJan 1828°FJul 663°FJul 663°F20°F20°F49°F49°FMay 2156°FMay 2156°FSep 956°FSep 956°FNov 835°FNov 835°FMar 935°FMar 935°F42°F42°F44°F44°F27°F27°F24°F24°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 28°F31°F36°F45°F55°F61°F62°F60°F54°F44°F33°F29°F
Temp. 24°F26°F30°F38°F47°F53°F55°F53°F47°F39°F29°F25°F
Low 20°F21°F25°F33°F41°F47°F49°F48°F43°F35°F25°F21°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 in Valdez

Average Hourly Temperature in ValdezJanFebMarAprMayJunJulAugSepOctNovDec12 AM12 AM2 AM2 AM4 AM4 AM6 AM6 AM8 AM8 AM10 AM10 AM12 PM12 PM2 PM2 PM4 PM4 PM6 PM6 PM8 PM8 PM10 PM10 PM12 AM12 AMNowNowfreezingfreezingvery coldvery 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.

Lundamo, Norway (3,767 miles away) and Kurort Oberwiesenthal, Germany (4,650 miles) are the far-away foreign places with temperatures most similar to Valdez (view comparison).

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In Valdez, 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 in Valdez begins around February 15 and lasts for 4.1 months, ending around June 20.

The clearest month of the year in Valdez is March, during which on average the sky is clear, mostly clear, or partly cloudy 39% of the time.

The cloudier part of the year begins around June 20 and lasts for 7.9 months, ending around February 15.

The cloudiest month of the year in Valdez is December, during which on average the sky is overcast or mostly cloudy 71% of the time.

Cloud Cover Categories in Valdez

Cloud Cover Categories in ValdezclearercloudiercloudierJanFebMarAprMayJunJulAugSepOctNovDec0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%Mar 1540%Mar 1540%Dec 528%Dec 528%Jun 2034%Jun 2034%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 69%65%61%64%63%66%69%68%71%68%66%71%
Clearer 31%35%39%36%37%34%31%32%29%32%34%29%

A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. The chance of wet days in Valdez varies throughout the year.

The wetter season lasts 6.0 months, from August 3 to February 2, with a greater than 50% chance of a given day being a wet day. The month with the most wet days in Valdez is September, with an average of 18.2 days with at least 0.04 inches of precipitation.

The drier season lasts 6.0 months, from February 2 to August 3. The month with the fewest wet days in Valdez is May, with an average of 12.0 days with at least 0.04 inches of precipitation.

Among wet days, we distinguish between those that experience rain alone, snow alone, or a mixture of the two. Based on this categorization, the most common form of precipitation in Valdez changes throughout the year.

Rain alone is the most common for 8.4 months, from March 8 to November 19. The month with the most days of rain alone in Valdez is September, with an average of 18.1 days.

Snow alone is the most common for 2.7 months, from November 25 to February 14. The month with the most days of snow alone in Valdez is December, with an average of 6.7 days.

Mixed snow and rain is the most common for 4.1 weeks, from February 14 to March 8 and from November 19 to November 25. The month with the most days of mixed snow and rain in Valdez is December, with an average of 6.2 days.

Daily Chance of Precipitation in Valdez

Daily Chance of Precipitation in ValdezsnowrainsnowJanFebMarAprMayJunJulAugSepOctNovDec0%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%Sep 2663%Sep 2663%May 837%May 837%Feb 1448%Feb 1448%Nov 1949%Nov 1949%Aug 350%Aug 350%NowNowsnowmixedrain
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 4.0d3.6d5.8d9.8d11.8d12.2d13.9d16.1d18.1d15.2d6.1d3.8d
Mixed 5.3d4.8d4.0d1.7d0.2d0.0d0.0d0.0d0.1d1.6d4.7d6.2d
Snow 6.5d5.1d2.8d0.5d0.0d0.0d0.0d0.0d0.0d0.6d3.9d6.7d
Any 15.8d13.6d12.6d12.0d12.0d12.2d13.9d16.1d18.2d17.4d14.7d16.7d

To show variation within the months and not just the monthly totals, we show the rainfall accumulated over a sliding 31-day period centered around each day of the year. Valdez experiences extreme seasonal variation in monthly rainfall.

Rain falls throughout the year in Valdez. The month with the most rain in Valdez is September, with an average rainfall of 10.3 inches.

The month with the least rain in Valdez is March, with an average rainfall of 2.9 inches.

Average Monthly Rainfall in Valdez

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 4.0″3.2″2.9″3.4″3.3″3.7″4.9″7.7″10.3″8.0″4.2″4.1″

Snowfall

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

The snowy period of the year lasts for 7.0 months, from October 3 to May 1, with a sliding 31-day snowfall of at least 1.0 inches. The month with the most snow in Valdez is December, with an average snowfall of 33.2 inches.

The snowless period of the year lasts for 5.0 months, from May 1 to October 3. The least snow falls around July 23, with an average total accumulation of 0.0 inches.

Average Monthly Snowfall in Valdez

Average Monthly Snowfall in ValdezsnowsnowJanFebMarAprMayJunJulAugSepOctNovDec0 in0 in10 in10 in20 in20 in30 in30 in40 in40 in50 in50 in60 in60 inDec 2233.5 inDec 2233.5 inJul 230.0 inJul 230.0 inOct 31.0 inOct 31.0 inMay 11.0 inMay 11.0 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 30.3″24.7″13.4″3.8″0.2″0.0″0.0″0.0″0.1″4.3″21.2″33.2″

The length of the day in Valdez varies extremely over the course of the year. In 2024, the shortest day is December 21, with 5 hours, 29 minutes of daylight; the longest day is June 20, with 19 hours, 20 minutes of daylight.

Hours of Daylight and Twilight in Valdez

Hours of Daylight and Twilight in ValdezJanFebMarAprMayJunJulAugSepOctNovDec0 hr24 hr4 hr20 hr8 hr16 hr12 hr12 hr16 hr8 hr20 hr4 hr24 hr0 hr12 hr, 12 minMar 1912 hr, 12 minMar 1919 hr, 20 minJun 2019 hr, 20 minJun 2012 hr, 17 minSep 2212 hr, 17 minSep 225 hr, 29 minDec 215 hr, 29 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 6.6h9.1h11.9h14.8h17.6h19.2h18.2h15.7h12.8h9.9h7.2h5.6h

The earliest sunrise is at 4:06 AM on June 18, and the latest sunrise is 5 hours, 53 minutes later at 10:00 AM on December 25. The earliest sunset is at 3:26 PM on December 16, and the latest sunset is 8 hours, 1 minute later at 11:27 PM on June 22.

Daylight saving time (DST) is observed in Valdez 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 in Valdez

Sunrise & Sunset with Twilight and Daylight Saving Time in ValdezJanFebMarAprMayJunJulAugSepOctNovDec2 AM4 AM6 AM8 AM10 AM12 PM2 PM4 PM6 PM8 PM10 PM12 AMJun 184:06 AMJun 184:06 AM11:27 PMJun 2211:27 PMJun 22Dec 163:26 PMDec 163:26 PM10:00 AMDec 2510:00 AMDec 25Mar 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 in Valdez

Solar Elevation and Azimuth in ValdezJanFebMarAprMayJunJulAugSepOctNovDec12 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 AM00010101020203030405000010101020203030404050552NowNow
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 in Valdez

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 in Valdez, 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 in Valdez

Humidity Comfort Levels in ValdezJanFebMarAprMayJunJulAugSepOctNovDec0%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%Jul 20%Jul 20%NowNowdrydry
dry 55°F comfortable 60°F humid 65°F muggy 70°F oppressive 75°F miserable
The percentage of time spent at various humidity comfort levels, categorized by dew point.
JanFebMarAprMayJunJulAugSepOctNovDec
Muggy days 0.0d0.0d0.0d0.0d0.0d0.0d0.0d0.0d0.0d0.0d0.0d0.0d

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

The average hourly wind speed in Valdez experiences significant seasonal variation over the course of the year.

The windier part of the year lasts for 6.1 months, from September 29 to April 3, with average wind speeds of more than 7.7 miles per hour. The windiest month of the year in Valdez is January, with an average hourly wind speed of 11.0 miles per hour.

The calmer time of year lasts for 5.9 months, from April 3 to September 29. The calmest month of the year in Valdez is June, with an average hourly wind speed of 4.5 miles per hour.

Average Wind Speed in Valdez

Average Wind Speed in ValdezwindywindyJanFebMarAprMayJunJulAugSepOctNovDec0 mph0 mph2 mph2 mph4 mph4 mph6 mph6 mph8 mph8 mph10 mph10 mph12 mph12 mph14 mph14 mph16 mph16 mph18 mph18 mph20 mph20 mph22 mph22 mphJan 611.1 mphJan 611.1 mphJul 54.3 mphJul 54.3 mphSep 297.7 mphSep 297.7 mphApr 37.7 mphApr 37.7 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) 11.010.59.56.65.14.54.65.67.18.510.310.6

The predominant average hourly wind direction in Valdez varies throughout the year.

The wind is most often from the south for 4.0 months, from May 16 to September 15, with a peak percentage of 44% on July 28. The wind is most often from the north for 8.0 months, from September 15 to May 16, with a peak percentage of 53% on January 1.

Wind Direction in Valdez

Wind Direction in ValdezNSNJanFebMarAprMayJunJulAugSepOctNovDec0%100%20%80%40%60%60%40%80%20%100%0%NowNowsoutheastnorthwest
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).

Valdez 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 2.8 months, from June 22 to September 16, with an average temperature above 52°F. The month of the year in Valdez with the warmest water is August, with an average temperature of 56°F.

The time of year with cooler water lasts for 5.0 months, from December 7 to May 5, with an average temperature below 40°F. The month of the year in Valdez with the coolest water is March, with an average temperature of 37°F.

Average Water Temperature in Valdez

Average Water Temperature in ValdezwarmcoolcoolJanFebMarAprMayJunJulAugSepOctNovDec30°F30°F35°F35°F40°F40°F45°F45°F50°F50°F55°F55°F60°F60°FAug 256°FAug 256°F36°FFeb 2736°FFeb 27Jun 2252°FJun 2252°FSep 1652°FSep 1652°FDec 740°FDec 740°FMay 540°FMay 540°FNowNow
The daily average water temperature (purple line), with 25th to 75th and 10th to 90th percentile bands.
WaterJanFebMarAprMayJunJulAugSepOctNovDec
Temperature 38°F37°F37°F38°F43°F51°F56°F56°F52°F47°F43°F40°F

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

Tourism Score in Valdez

Tourism Score in ValdezJanFebMarAprMayJunJulAugSepOctNovDec002244668810102.12.10.00.0NowNowtemperaturetemperature 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 Valdez for hot-weather activities is from June 22 to June 30.

Beach/Pool Score in Valdez

Beach/Pool Score in ValdezJanFebMarAprMayJunJulAugSepOctNovDec002244668810100.10.10.00.0NowNow cloudscloudsprecipitationprecipitation
The beach/pool score (filled area), and its constituents: the temperature score (red line), the cloud cover score (blue line), and the precipitation score (green line).

Methodology

For each hour between 8:00 AM and 9:00 PM of each day in the analysis period (1980 to 2016), independent scores are computed for perceived temperature, cloud cover, and total precipitation. Those scores are combined into a single hourly composite score, which is then aggregated into days, averaged over all the years in the analysis period, and smoothed.

Our cloud cover score is 10 for fully clear skies, falling linearly to 9 for mostly clear skies, and to 1 for fully overcast skies.

Our precipitation score, which is based on the three-hour precipitation centered on the hour in question, is 10 for no precipitation, falling linearly to 9 for trace precipitation, and to 0 for 0.04 inches of precipitation or more.

Our tourism temperature score is 0 for perceived temperatures below 50°F, rising linearly to 9 for 65°F, to 10 for 75°F, falling linearly to 9 for 80°F, and to 1 for 90°F or hotter.

Our beach/pool temperature score is 0 for perceived temperatures below 65°F, rising linearly to 9 for 75°F, to 10 for 82°F, falling linearly to 9 for 90°F, and to 1 for 100°F or hotter.

Definitions of the growing season vary throughout the world, but for the purposes of this report, we define it as the longest continuous period of non-freezing temperatures (≥ 32°F) in the year (the calendar year in the Northern Hemisphere, or from July 1 until June 30 in the Southern Hemisphere).

The growing season in Valdez typically lasts for 5.5 months (166 days), from around April 23 to around October 7, rarely starting before April 8 or after May 10, and rarely ending before September 18 or after October 25.

Time Spent in Various Temperature Bands and the Growing Season in Valdez

Time Spent in Various Temperature Bands and the Growing Season in Valdezgrowing seasonJanFebMarAprMayJunJulAugSepOctNovDec0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%Apr 2350%Apr 2350%Oct 750%Oct 750%May 1090%May 1090%Sep 1890%Sep 1890%Apr 810%Apr 810%Oct 2510%Oct 2510%Jul 17100%Jul 17100%NowNowfrigidfreezingvery coldcoldcool
frigid 15°F freezing 32°F very cold 45°F cold 55°F cool 65°F comfortable 75°F warm 85°F hot 95°F sweltering
The percentage of time spent in various temperature bands. The black line is the percentage chance that a given day is within the growing season.

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

Based on growing degree days alone, the first spring blooms in Valdez should appear around June 11, only rarely appearing before May 29 or after June 28.

Growing Degree Days in Valdez

Growing Degree Days in ValdezJanFebMarAprMayJunJulAugSepOctNovDec0°F0°F100°F100°F200°F200°F300°F300°F400°F400°F500°F500°F600°F600°FJun 1190°FJun 1190°FDec 31496°FDec 31496°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 2.8 months, from April 27 to July 22, with an average daily incident shortwave energy per square meter above 4.7 kWh. The brightest month of the year in Valdez is June, with an average of 5.7 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 in Valdez is December, with an average of 0.2 kWh.

Average Daily Incident Shortwave Solar Energy in Valdez

Average Daily Incident Shortwave Solar Energy in ValdezbrightdarkdarkJanFebMarAprMayJunJulAugSepOctNovDec0 kWh0 kWh1 kWh1 kWh2 kWh2 kWh3 kWh3 kWh4 kWh4 kWh5 kWh5 kWh6 kWh6 kWh7 kWh7 kWh8 kWh8 kWhJun 25.8 kWhJun 25.8 kWhDec 200.1 kWhDec 200.1 kWhJul 224.7 kWhJul 224.7 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) 0.31.02.44.15.55.74.93.82.31.20.40.2

For the purposes of this report, the geographical coordinates of Valdez are 61.131 deg latitude, -146.348 deg longitude, and 98 ft elevation.

The topography within 2 miles of Valdez contains extreme variations in elevation, with a maximum elevation change of 3,724 feet and an average elevation above sea level of 369 feet. Within 10 miles also contains extreme variations in elevation (6,404 feet). Within 50 miles also contains extreme variations in elevation (12,280 feet).

The area within 2 miles of Valdez is covered by water (45%), shrubs (31%), and sparse vegetation (12%), within 10 miles by shrubs (28%) and snow and glaciers (22%), and within 50 miles by snow and glaciers (27%) and water (20%).

This report illustrates the typical weather in Valdez, 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

There are 3 weather stations near enough to contribute to our estimation of the temperature and dew point in Valdez.

For each station, the records are corrected for the elevation difference between that station and Valdez according to the International Standard Atmosphere , and by the relative change present in the MERRA-2 satellite-era reanalysis between the two locations.

The estimated value at Valdez is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between Valdez and a given station.

The stations contributing to this reconstruction are:

To get a sense of how much these sources agree with each other, you can view a comparison of Valdez and the stations that contribute to our estimates of its temperature history and climate. Please note that each source's contribution is adjusted for elevation and the relative change present in the MERRA-2 data.

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.