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August Weather at Valdez Weather Station Office Alaska, United States

Daily high temperatures decrease by 4°F, from 62°F to 58°F, rarely falling below 52°F or exceeding 69°F.

Daily low temperatures decrease by 3°F, from 49°F to 46°F, rarely falling below 41°F or exceeding 52°F.

For reference, on July 6, the hottest day of the year, temperatures at Valdez Weather Station Office typically range from 49°F to 63°F, while on January 18, the coldest day of the year, they range from 20°F to 28°F.

Average High and Low Temperature in August at Valdez Weather Station Office

Average High and Low Temperature in August at Valdez Weather Station OfficeAug112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030313135°F35°F40°F40°F45°F45°F50°F50°F55°F55°F60°F60°F65°F65°F70°F70°FJulSepAug 162°FAug 162°F49°F49°FAug 3158°FAug 3158°F46°F46°FAug 1161°FAug 1161°F48°F48°FAug 2160°FAug 2160°F47°F47°F
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 August. 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 August at Valdez Weather Station Office

Average Hourly Temperature in August at Valdez Weather Station OfficeAug112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030313112 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 AMJulSepvery coldcoldcoolvery cold
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) is the far-away foreign place with temperatures most similar to Valdez Weather Station Office (view comparison).

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The month of August at Valdez Weather Station Office experiences essentially constant cloud cover, with the percentage of time that the sky is overcast or mostly cloudy remaining about 68% throughout the month. The lowest chance of overcast or mostly cloudy conditions is 67% on August 27.

The clearest day of the month is August 27, with clear, mostly clear, or partly cloudy conditions 33% of the time.

For reference, on December 5, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 72%, while on March 15, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 40%.

Cloud Cover Categories in August at Valdez Weather Station Office

Cloud Cover Categories in August at Valdez Weather Station OfficeAug11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%JulSepDec 528%Dec 528%Aug 131%Aug 131%Aug 3132%Aug 3132%Aug 1132%Aug 1132%Aug 2133%Aug 2133%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 Valdez Weather Station Office, the chance of a wet day over the course of August is rapidly increasing, starting the month at 49% and ending it at 56%.

For reference, the year's highest daily chance of a wet day is 63% on September 27, and its lowest chance is 37% on May 8.

Probability of Precipitation in August at Valdez Weather Station Office

Probability of Precipitation in August at Valdez Weather Station OfficeAug11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%JulSepAug 149%Aug 149%Aug 3156%Aug 3156%Aug 1151%Aug 1151%Aug 2153%Aug 2153%rain
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 August at Valdez Weather Station Office is very rapidly increasing, starting the month at 6.4 inches, when it rarely exceeds 9.8 inches or falls below 3.0 inches, and ending the month at 9.0 inches, when it rarely exceeds 13.5 inches or falls below 4.5 inches.

Average Monthly Rainfall in August at Valdez Weather Station Office

Average Monthly Rainfall in August at Valdez Weather Station OfficeAug11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310 in0 in2 in2 in4 in4 in6 in6 in8 in8 in10 in10 in12 in12 in14 in14 in16 in16 inJulSepAug 16.4 inAug 16.4 inAug 319.0 inAug 319.0 inAug 117.4 inAug 117.4 inAug 218.1 inAug 218.1 in
The average rainfall (solid line) accumulated over the course of a sliding 31-day period centered on the day in question, with 25th to 75th and 10th to 90th percentile bands. The thin dotted line is the corresponding average snowfall.

Over the course of August at Valdez Weather Station Office, the length of the day is very rapidly decreasing. From the start to the end of the month, the length of the day decreases by 2 hours, 45 minutes, implying an average daily decrease of 5 minutes, 31 seconds, and weekly decrease of 38 minutes, 37 seconds.

The shortest day of the month is August 31, with 14 hours, 16 minutes of daylight and the longest day is August 1, with 17 hours, 1 minute of daylight.

Hours of Daylight and Twilight in August at Valdez Weather Station Office

Hours of Daylight and Twilight in August at Valdez Weather Station OfficeAug11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310 hr24 hr4 hr20 hr8 hr16 hr12 hr12 hr16 hr8 hr20 hr4 hr24 hr0 hrJulSepnightnightdaydayAug 117 hr, 1 minAug 117 hr, 1 minAug 3114 hr, 16 minAug 3114 hr, 16 minAug 1615 hr, 40 minAug 1615 hr, 40 min
The number of hours during which the Sun is visible (black line). From bottom (most yellow) to top (most gray), the color bands indicate: full daylight, twilight (civil, nautical, and astronomical), and full night.

The earliest sunrise of the month at Valdez Weather Station Office is 5:20 AM on August 1 and the latest sunrise is 1 hour, 17 minutes later at 6:36 AM on August 31.

The latest sunset is 10:21 PM on August 1 and the earliest sunset is 1 hour, 29 minutes earlier at 8:52 PM on August 31.

Daylight saving time is observed at Valdez Weather Station Office during 2024, but it neither starts nor ends during August, so the entire month is in standard time.

For reference, on June 20, the longest day of the year, the Sun rises at 4:07 AM and sets 19 hours, 20 minutes later, at 11:27 PM, while on December 21, the shortest day of the year, it rises at 9:59 AM and sets 5 hours, 29 minutes later, at 3:28 PM.

Sunrise & Sunset with Twilight in August at Valdez Weather Station Office

The solar day over the course of August. 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 August at Valdez Weather Station Office

Solar Elevation and Azimuth in August at Valdez Weather Station OfficeAug112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030313112 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 AMJulSep0010102020203030405000010102020303040
northeastsouthwest
Solar elevation and azimuth over the course of August 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 August 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 August at Valdez Weather Station Office

Moon Rise, Set & Phases in August at Valdez Weather Station OfficeAug112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030313112 AM12 AM4 AM4 AM8 AM8 AM12 PM12 PM4 PM4 PM8 PM8 PM12 AM12 AMJulSepJul 52:58 PMJul 52:58 PMJul 212:18 AMJul 212:18 AMAug 43:14 AMAug 43:14 AMAug 1910:26 AMAug 1910:26 AMSep 25:56 PMSep 25:56 PMSep 176:35 PMSep 176:35 PM2:16 AM2:16 AM11:46 PM11:46 PM4:14 AM4:14 AM5:06 AM5:06 AM10:51 PM10:51 PM9:56 PM9:56 PM5:30 AM5:30 AM5:55 AM5:55 AM8:58 PM8:58 PM8:00 PM8:00 PM8:20 AM8:20 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.
Aug 2024IlluminationMoonriseMoonsetMoonriseMeridian PassingDistance
1
7%-10:53 PMNNW-11:41 AMS241,138 mi
2
3%1:32 AMNNE10:55 PMNNW-12:35 PMS243,344 mi
3
0%3:22 AMNNE10:54 PMNW-1:26 PMS245,465 mi
4
0%5:06 AMNE10:51 PMNW-2:12 PMS247,436 mi
5
2%6:43 AMNE10:48 PMWNW-2:56 PMS249,172 mi
6
6%8:14 AMENE10:45 PMWNW-3:36 PMS250,564 mi
7
11%9:40 AME10:41 PMW-4:15 PMS251,492 mi
8
18%11:03 AME10:38 PMW-4:54 PMS251,839 mi
9
26%12:27 PMESE10:35 PMWSW-5:33 PMS251,500 mi
10
35%1:53 PMESE10:31 PMWSW-6:13 PMS250,402 mi
11
45%3:25 PMSE10:28 PMSW-6:57 PMS248,520 mi
12
50%5:04 PMSE10:26 PMSW-7:45 PMS245,890 mi
13
65%6:52 PMSSE10:25 PMSSW-8:38 PMS242,620 mi
14
75%8:43 PMSSE10:30 PMS-9:36 PMS238,900 mi
15
84%9:51 PMS11:25 PMS-10:38 PMS234,997 mi
16
92%9:59 PMSSE--11:41 PMS231,242 mi
17
95%-1:24 AMSSW9:58 PMSE--
18
97%-3:29 AMSW9:56 PMSE12:43 AMS227,984 mi
19
100%-5:30 AMSW9:53 PMESE1:42 AMS225,538 mi
20
99%-7:24 AMWSW9:50 PMESE2:37 AMS224,127 mi
21
96%-9:14 AMW9:46 PME3:28 AMS223,850 mi
22
89%-11:02 AMW9:43 PMENE4:18 AMS224,668 mi
23
81%-12:51 PMWNW9:40 PMENE5:07 AMS226,422 mi
24
70%-2:44 PMNW9:36 PMNE5:57 AMS228,879 mi
25
59%-4:41 PMNNW9:34 PMNNE6:50 AMS231,773 mi
26
50%-6:40 PMNNW9:33 PMNNE7:44 AMS234,854 mi
27
36%-8:30 PMN9:45 PMN8:40 AMS237,913 mi
28
26%-9:08 PMNNW11:06 PMNNE9:36 AMS240,802 mi
29
17%-9:10 PMNNW-10:31 AMS243,430 mi
30
10%12:57 AMNNE9:08 PMNW-11:22 AMS245,754 mi
31
5%2:44 AMNE9:05 PMNW-12:10 PMS247,756 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 Valdez Weather Station Office is essentially constant during August, remaining around 0% throughout.

Humidity Comfort Levels in August at Valdez Weather Station Office

Humidity Comfort Levels in August at Valdez Weather Station OfficeAug11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%JulSepAug 160%Aug 160%Aug 10%Aug 10%Aug 310%Aug 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 Valdez Weather Station Office is increasing during August, increasing from 5.0 miles per hour to 6.2 miles per hour over the course of the month.

For reference, on January 6, the windiest day of the year, the daily average wind speed is 11.1 miles per hour, while on July 5, the calmest day of the year, the daily average wind speed is 4.3 miles per hour.

Average Wind Speed in August at Valdez Weather Station Office

Average Wind Speed in August at Valdez Weather Station OfficeAug11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310 mph0 mph2 mph2 mph4 mph4 mph6 mph6 mph8 mph8 mph10 mph10 mph12 mph12 mph14 mph14 mphJulSepAug 15.0 mphAug 15.0 mphAug 316.2 mphAug 316.2 mphAug 115.3 mphAug 115.3 mphAug 215.8 mphAug 215.8 mph
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 Valdez Weather Station Office throughout August is predominantly from the south, with a peak proportion of 44% on August 1.

Wind Direction in August at Valdez Weather Station Office

Wind Direction in August at Valdez Weather Station OfficeSNAug11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310%100%20%80%40%60%60%40%80%20%100%0%JulSepsoutheastnorthwest
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 Weather Station Office 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 surface water temperature at Valdez Weather Station Office is essentially constant during August, remaining within 1°F of 56°F throughout.

The highest average surface water temperature during August is 56°F on August 3.

Average Water Temperature in August at Valdez Weather Station Office

Average Water Temperature in August at Valdez Weather Station OfficeAug112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030313148°F48°F50°F50°F52°F52°F54°F54°F56°F56°F58°F58°F60°F60°FJulSepAug 356°FAug 356°FAug 3155°FAug 3155°FAug 1156°FAug 1156°FAug 2156°FAug 2156°F
The daily average water temperature (purple line), with 25th to 75th and 10th to 90th percentile bands.

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 Valdez Weather Station Office typically lasts for 5.5 months (166 days), from around April 23 to around October 7, rarely starting before April 8 or after May 9, and rarely ending before September 18 or after October 25.

The month of August at Valdez Weather Station Office is reliably fully within the growing season.

Time Spent in Various Temperature Bands and the Growing Season in August at Valdez Weather Station Office

Time Spent in Various Temperature Bands and the Growing Season in August at Valdez Weather Station Officegrowing seasonAug11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%JulSep100%Aug 16100%Aug 1690%Sep 1890%Sep 18Jul 17100%Jul 17100%very 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 Valdez Weather Station Office are gradually increasing during August, increasing by 113°F, from 339°F to 452°F, over the course of the month.

Growing Degree Days in August at Valdez Weather Station Office

Growing Degree Days in August at Valdez Weather Station OfficeAug1122334455667788991010111112121313141415151616171718181919202021212222232324242525262627272828292930303131250°F250°F300°F300°F350°F350°F400°F400°F450°F450°F500°F500°F550°F550°F600°F600°FJulSepAug 1339°FAug 1339°FAug 31452°FAug 31452°FAug 11385°FAug 11385°FAug 21423°FAug 21423°F
The average growing degree days accumulated over the course of August, 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 Valdez Weather Station Office is decreasing during August, falling by 1.2 kWh, from 4.3 kWh to 3.1 kWh, over the course of the month.

Average Daily Incident Shortwave Solar Energy in August at Valdez Weather Station Office

Average Daily Incident Shortwave Solar Energy in August at Valdez Weather Station OfficeAug11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310 kWh0 kWh1 kWh1 kWh2 kWh2 kWh3 kWh3 kWh4 kWh4 kWh5 kWh5 kWh6 kWh6 kWh7 kWh7 kWh8 kWh8 kWhJulSepAug 14.3 kWhAug 14.3 kWhAug 313.1 kWhAug 313.1 kWhAug 114.0 kWhAug 114.0 kWhAug 213.6 kWhAug 213.6 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 Valdez Weather Station Office are 61.133 deg latitude, -146.350 deg longitude, and 95 ft elevation.

The topography within 2 miles of Valdez Weather Station Office contains extreme variations in elevation, with a maximum elevation change of 4,058 feet and an average elevation above sea level of 471 feet. Within 10 miles also contains extreme variations in elevation (6,398 feet). Within 50 miles also contains extreme variations in elevation (12,280 feet).

The area within 2 miles of Valdez Weather Station Office 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 at Valdez Weather Station Office, 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

Valdez Weather Station Office 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 include but are not limited to Valdez Airport; Merle K. (Mudhole) Smith Airport; Skelton Airport; Gulkana Airport; Whittier Airport; Portage, Portage Glacier; Palmer Municipal Airport; and Birchwood 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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