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Climate and Average Weather Year Round in Palomar de Arroyos Spain

In Palomar de Arroyos, the summers are short, warm, dry, and mostly clear and the winters are long, very cold, snowy, windy, and partly cloudy. Over the course of the year, the temperature typically varies from 28°F to 80°F and is rarely below 20°F or above 87°F.

Based on the tourism score, the best time of year to visit Palomar de Arroyos for warm-weather activities is from late June to late August.

Climate in Palomar de Arroyos

very coldcoldcoolwarmcoolcoldJanFebMarAprMayJunJulAugSepOctNovDecNowNow86%86%49%49%clearovercastprecipitation: 1.4 inprecipitation: 1.4 in0.4 in0.4 inmuggy: 0%muggy: 0%0%0%drydrytourism score: 8.5tourism score: 8.50.10.1
Palomar de Arroyos weather by month. Click on each chart for more information.

The warm season lasts for 2.9 months, from June 13 to September 9, with an average daily high temperature above 73°F. The hottest month of the year in Palomar de Arroyos is July, with an average high of 79°F and low of 55°F.

The cold season lasts for 3.8 months, from November 13 to March 7, with an average daily high temperature below 50°F. The coldest month of the year in Palomar de Arroyos is January, with an average low of 28°F and high of 43°F.

Average High and Low Temperature in Palomar de Arroyos

Average High and Low Temperature in Palomar de ArroyoswarmcoldcoldJanFebMarAprMayJunJulAugSepOctNovDec0°F0°F10°F10°F20°F20°F30°F30°F40°F40°F50°F50°F60°F60°F70°F70°F80°F80°F90°F90°F100°F100°FJan 643°FJan 643°FJul 3080°FJul 3080°F28°F28°F56°F56°FJun 1373°FJun 1373°FSep 973°FSep 973°FNov 1350°FNov 1350°FMar 750°FMar 750°F50°F50°F52°F52°F35°F35°F31°F31°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 43°F46°F52°F56°F64°F73°F79°F78°F70°F60°F50°F44°F
Temp. 35°F37°F42°F46°F53°F62°F68°F67°F60°F51°F41°F36°F
Low 28°F29°F33°F37°F43°F51°F55°F56°F50°F42°F35°F29°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 Palomar de Arroyos

Average Hourly Temperature in Palomar de ArroyosJanFebMarAprMayJunJulAugSepOctNovDec12 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 AMNowNowfreezingvery coldvery coldcoldcoldcoolcomfortablewarmfreezingcomfortable
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.

Chester, California, United States (5,710 miles away) is the far-away foreign place with temperatures most similar to Palomar de Arroyos (view comparison).

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In Palomar de Arroyos, the average percentage of the sky covered by clouds experiences significant seasonal variation over the course of the year.

The clearer part of the year in Palomar de Arroyos begins around June 14 and lasts for 2.8 months, ending around September 7.

The clearest month of the year in Palomar de Arroyos is July, during which on average the sky is clear, mostly clear, or partly cloudy 85% of the time.

The cloudier part of the year begins around September 7 and lasts for 9.2 months, ending around June 14.

The cloudiest month of the year in Palomar de Arroyos is November, during which on average the sky is overcast or mostly cloudy 50% of the time.

Cloud Cover Categories in Palomar de Arroyos

Cloud Cover Categories in Palomar de ArroyosclearercloudiercloudierJanFebMarAprMayJunJulAugSepOctNovDec0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%Jul 2086%Jul 2086%Oct 3049%Oct 3049%Jun 1467%Jun 1467%Sep 768%Sep 768%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 47%44%45%45%44%31%15%21%36%47%50%48%
Clearer 53%56%55%55%56%69%85%79%64%53%50%52%

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

The wetter season lasts 7.6 months, from April 1 to November 19, with a greater than 14% chance of a given day being a wet day. The month with the most wet days in Palomar de Arroyos is May, with an average of 5.9 days with at least 0.04 inches of precipitation.

The drier season lasts 4.4 months, from November 19 to April 1. The month with the fewest wet days in Palomar de Arroyos is February, with an average of 2.3 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 in Palomar de Arroyos is May, with an average of 5.8 days. Based on this categorization, the most common form of precipitation throughout the year is rain alone, with a peak probability of 20% on May 21.

Daily Chance of Precipitation in Palomar de Arroyos

Daily Chance of Precipitation in Palomar de ArroyoswetdrydryJanFebMarAprMayJunJulAugSepOctNovDec0%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%May 2120%May 2120%Jan 297%Jan 297%Apr 114%Apr 114%Nov 1914%Nov 1914%NowNowrainsnow
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 1.6d1.6d2.8d4.4d5.8d4.8d2.9d3.5d4.5d5.2d3.6d2.1d
Mixed 0.3d0.4d0.5d0.3d0.1d0.0d0.0d0.0d0.0d0.0d0.3d0.3d
Snow 0.7d0.3d0.1d0.0d0.0d0.0d0.0d0.0d0.0d0.0d0.2d0.5d
Any 2.6d2.3d3.4d4.7d5.9d4.8d2.9d3.5d4.5d5.3d4.0d2.9d

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. Palomar de Arroyos experiences some seasonal variation in monthly rainfall.

The rainy period of the year lasts for 9.1 months, from March 7 to December 10, with a sliding 31-day rainfall of at least 0.5 inches. The month with the most rain in Palomar de Arroyos is October, with an average rainfall of 1.3 inches.

The rainless period of the year lasts for 2.9 months, from December 10 to March 7. The month with the least rain in Palomar de Arroyos is January, with an average rainfall of 0.3 inches.

Average Monthly Rainfall in Palomar de Arroyos

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 0.3″0.3″0.6″1.0″1.3″1.0″0.5″0.7″1.0″1.3″1.0″0.4″

Snowfall

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

The snowy period of the year lasts for 2.8 months, from December 16 to March 8, with a sliding 31-day snowfall of at least 1.0 inches. The month with the most snow in Palomar de Arroyos is January, with an average snowfall of 1.4 inches.

The snowless period of the year lasts for 9.2 months, from March 8 to December 16. The least snow falls around August 6, with an average total accumulation of 0.0 inches.

Average Monthly Snowfall in Palomar de Arroyos

Average Monthly Snowfall in Palomar de ArroyossnowJanFebMarAprMayJunJulAugSepOctNovDec0 in0 in1 in1 in2 in2 in3 in3 in4 in4 in5 in5 inJan 81.5 inJan 81.5 inAug 60.0 inAug 60.0 inFeb 261.3 inFeb 261.3 inDec 161.0 inDec 161.0 inNowNow
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 1.4″1.2″0.8″0.4″0.1″0.0″0.0″0.0″0.0″0.1″0.9″1.0″

The length of the day in Palomar de Arroyos varies significantly over the course of the year. In 2024, the shortest day is December 21, with 9 hours, 15 minutes of daylight; the longest day is June 20, with 15 hours, 6 minutes of daylight.

Hours of Daylight and Twilight in Palomar de Arroyos

Hours of Daylight and Twilight in Palomar de ArroyosJanFebMarAprMayJunJulAugSepOctNovDec0 hr24 hr4 hr20 hr8 hr16 hr12 hr12 hr16 hr8 hr20 hr4 hr24 hr0 hr12 hr, 7 minMar 2012 hr, 7 minMar 2015 hr, 6 minJun 2015 hr, 6 minJun 2012 hr, 9 minSep 2212 hr, 9 minSep 229 hr, 15 minDec 219 hr, 15 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 9.6h10.7h12.0h13.3h14.5h15.1h14.7h13.7h12.4h11.1h9.9h9.3h

The earliest sunrise is at 6:31 AM on June 14, and the latest sunrise is 1 hour, 56 minutes later at 8:27 AM on January 5. The earliest sunset is at 5:35 PM on December 7, and the latest sunset is 4 hours, 3 minutes later at 9:38 PM on June 27.

Daylight saving time (DST) is observed in Palomar de Arroyos during 2024, starting in the spring on March 31, lasting 6.9 months, and ending in the fall on October 27.

Sunrise & Sunset with Twilight and Daylight Saving Time in Palomar de Arroyos

Sunrise & Sunset with Twilight and Daylight Saving Time in Palomar de ArroyosJanFebMarAprMayJunJulAugSepOctNovDec2 AM4 AM6 AM8 AM10 AM12 PM2 PM4 PM6 PM8 PM10 PM12 AM2 AMJun 146:31 AMJun 146:31 AM9:38 PMJun 279:38 PMJun 27Dec 75:35 PMDec 75:35 PM8:27 AMJan 58:27 AMJan 5Mar 31DSTMar 31DSTDSTOct 27DSTOct 27daynightnightnightnightSolarMidnightSolarMidnightSolarNoonSunriseSunsetNowNow
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 Palomar de Arroyos

Solar Elevation and Azimuth in Palomar de ArroyosJanFebMarAprMayJunJulAugSepOctNovDec12 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 AM0000101010202020303030304040505060607000010101010202020303040405050602673NowNow
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 Palomar de Arroyos

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 Palomar de Arroyos, 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 Palomar de Arroyos

Humidity Comfort Levels in Palomar de ArroyosJanFebMarAprMayJunJulAugSepOctNovDec0%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%Mar 270%Mar 270%Aug 160%Aug 160%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.
JanFebMarAprMayJunJulAugSepOctNovDec
Muggy days 0.0d0.0d0.0d0.0d0.0d0.0d0.0d0.1d0.0d0.0d0.0d0.0d

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 Palomar de Arroyos experiences significant seasonal variation over the course of the year.

The windier part of the year lasts for 6.5 months, from October 21 to May 5, with average wind speeds of more than 9.9 miles per hour. The windiest month of the year in Palomar de Arroyos is February, with an average hourly wind speed of 11.9 miles per hour.

The calmer time of year lasts for 5.5 months, from May 5 to October 21. The calmest month of the year in Palomar de Arroyos is August, with an average hourly wind speed of 7.7 miles per hour.

Average Wind Speed in Palomar de Arroyos

Average Wind Speed in Palomar de ArroyoswindywindyJanFebMarAprMayJunJulAugSepOctNovDec0 mph0 mph2 mph2 mph4 mph4 mph6 mph6 mph8 mph8 mph10 mph10 mph12 mph12 mph14 mph14 mph16 mph16 mph18 mph18 mph20 mph20 mphFeb 212.1 mphFeb 212.1 mphAug 257.6 mphAug 257.6 mphOct 219.9 mphOct 219.9 mphMay 59.9 mphMay 59.9 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) 11.811.911.411.09.48.38.17.78.59.711.111.7

The predominant average hourly wind direction in Palomar de Arroyos is from the west throughout the year.

Wind Direction in Palomar de Arroyos

Wind Direction in Palomar de ArroyosJanFebMarAprMayJunJulAugSepOctNovDec0%100%20%80%40%60%60%40%80%20%100%0%NowNowwestsouthnortheast
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).

To characterize how pleasant the weather is in Palomar de Arroyos 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 Palomar de Arroyos for general outdoor tourist activities is from late June to late August, with a peak score in the third week of July.

Tourism Score in Palomar de Arroyos

Tourism Score in Palomar de Arroyosbest timeJanFebMarAprMayJunJulAugSepOctNovDec002244668810108.58.50.10.1NowNowtemperaturetemperature cloudscloudsprecipitationprecipitationtourism score
The tourism score (filled area), and its constituents: the temperature score (red line), the cloud cover score (blue line), and the precipitation score (green line).

The beach/pool score favors clear, rainless days with perceived temperatures between 75°F and 90°F. Based on this score, the best time of year to visit Palomar de Arroyos for hot-weather activities is from early July to mid August, with a peak score in the last week of July.

Beach/Pool Score in Palomar de Arroyos

Beach/Pool Score in Palomar de ArroyosJanFebMarAprMayJunJulAugSepOctNovDec002244668810106.56.50.00.0NowNowtemperaturetemperature cloudscloudsprecipitationprecipitationbeach/pool score
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 Palomar de Arroyos typically lasts for 6.3 months (193 days), from around April 22 to around November 1, rarely starting before April 2 or after May 13, and rarely ending before October 14 or after November 21.

Time Spent in Various Temperature Bands and the Growing Season in Palomar de Arroyos

Time Spent in Various Temperature Bands and the Growing Season in Palomar de Arroyosgrowing seasonJanFebMarAprMayJunJulAugSepOctNovDec0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%50%Apr 2250%Apr 2250%Nov 150%Nov 190%May 1390%May 1390%Oct 1490%Oct 1410%Apr 210%Apr 210%Nov 2110%Nov 210%Feb 20%Feb 2Aug 2100%Aug 2100%freezingvery coldcoldcoolcomfortablewarm
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 Palomar de Arroyos should appear around April 24, only rarely appearing before April 8 or after May 10.

Growing Degree Days in Palomar de Arroyos

Growing Degree Days in Palomar de ArroyosJanFebMarAprMayJunJulAugSepOctNovDec0°F0°F500°F500°F1,000°F1,000°F1,500°F1,500°F2,000°F2,000°FApr 2490°FApr 2490°FJul 14900°FJul 14900°FSep 61,800°FSep 61,800°FDec 312,174°FDec 312,174°F
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 3.2 months, from May 12 to August 18, with an average daily incident shortwave energy per square meter above 6.8 kWh. The brightest month of the year in Palomar de Arroyos is July, with an average of 7.8 kWh.

The darker period of the year lasts for 3.4 months, from October 27 to February 11, with an average daily incident shortwave energy per square meter below 3.2 kWh. The darkest month of the year in Palomar de Arroyos is December, with an average of 2.1 kWh.

Average Daily Incident Shortwave Solar Energy in Palomar de Arroyos

Average Daily Incident Shortwave Solar Energy in Palomar de ArroyosbrightdarkdarkJanFebMarAprMayJunJulAugSepOctNovDec0 kWh0 kWh1 kWh1 kWh2 kWh2 kWh3 kWh3 kWh4 kWh4 kWh5 kWh5 kWh6 kWh6 kWh7 kWh7 kWh8 kWh8 kWh9 kWh9 kWh10 kWh10 kWhJul 48.0 kWhJul 48.0 kWhDec 182.1 kWhDec 182.1 kWhMay 126.8 kWhMay 126.8 kWhAug 186.8 kWhAug 186.8 kWhOct 273.2 kWhOct 273.2 kWhFeb 113.2 kWhFeb 113.2 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) 2.43.44.86.06.97.67.86.95.43.82.62.1

For the purposes of this report, the geographical coordinates of Palomar de Arroyos are 40.779 deg latitude, -0.751 deg longitude, and 3,927 ft elevation.

The topography within 2 miles of Palomar de Arroyos contains large variations in elevation, with a maximum elevation change of 2,100 feet and an average elevation above sea level of 3,974 feet. Within 10 miles also contains large variations in elevation (3,153 feet). Within 50 miles contains large variations in elevation (6,299 feet).

The area within 2 miles of Palomar de Arroyos is covered by shrubs (59%), cropland (24%), and trees (12%), within 10 miles by shrubs (40%) and cropland (27%), and within 50 miles by cropland (43%) and trees (31%).

This report illustrates the typical weather in Palomar de Arroyos, 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 2 weather stations near enough to contribute to our estimation of the temperature and dew point in Palomar de Arroyos.

For each station, the records are corrected for the elevation difference between that station and Palomar de Arroyos 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 Palomar de Arroyos is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between Palomar de Arroyos 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 Palomar de Arroyos 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.