July Weather in Piornal SpainDaily high temperatures increase by 3°F, from 83°F to 86°F, rarely falling below 73°F or exceeding 94°F. The highest daily average high temperature is 87°F on July 27. Daily low temperatures are around 56°F, rarely falling below 49°F or exceeding 63°F. The highest daily average low temperature is 57°F on July 23. For reference, on July 22, the hottest day of the year, temperatures in Piornal typically range from 57°F to 87°F, while on January 15, the coldest day of the year, they range from 27°F to 46°F. The figure below shows you a compact characterization of the hourly average temperatures for the quarter of the year centered on July. 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. Burney, United States (5,548 miles away) and Wrightwood, United States (5,711 miles) are the far-away foreign places with temperatures most similar to Piornal (view comparison). CloudsThe month of July in Piornal experiences gradually decreasing cloud cover, with the percentage of time that the sky is overcast or mostly cloudy decreasing from 17% to 12%. The lowest chance of overcast or mostly cloudy conditions is 11% on July 20. The clearest day of the month is July 20, with clear, mostly clear, or partly cloudy conditions 89% of the time. For reference, on October 31, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 50%, while on July 20, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 89%. PrecipitationA wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. In Piornal, the chance of a wet day over the course of July is gradually decreasing, starting the month at 6% and ending it at 3%. For reference, the year's highest daily chance of a wet day is 26% on October 30, and its lowest chance is 3% on July 30. RainfallTo 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 July in Piornal is essentially constant, remaining about 0.3 inches throughout, and rarely exceeding 1.1 inches. The lowest average 31-day accumulation is 0.2 inches on July 27. SunOver the course of July in Piornal, the length of the day is decreasing. From the start to the end of the month, the length of the day decreases by 41 minutes, implying an average daily decrease of 1 minute, 23 seconds, and weekly decrease of 9 minutes, 38 seconds. The shortest day of the month is July 31, with 14 hours, 17 minutes of daylight and the longest day is July 1, with 14 hours, 58 minutes of daylight. The earliest sunrise of the month in Piornal is 6:58 AM on July 1 and the latest sunrise is 23 minutes later at 7:20 AM on July 31. The latest sunset is 9:56 PM on July 1 and the earliest sunset is 18 minutes earlier at 9:38 PM on July 31. Daylight saving time is observed in Piornal during 2024, but it neither starts nor ends during July, so the entire month is in standard time. For reference, on June 20, the longest day of the year, the Sun rises at 6:54 AM and sets 15 hours, 2 minutes later, at 9:56 PM, while on December 21, the shortest day of the year, it rises at 8:42 AM and sets 9 hours, 19 minutes later, at 6:01 PM. 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. MoonThe figure below presents a compact representation of key lunar data for July 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.
HumidityWe 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 in Piornal is essentially constant during July, remaining around 0% throughout. For reference, on August 16, the muggiest day of the year, there are muggy conditions 0% of the time, while on January 1, the least muggy day of the year, there are muggy conditions 0% of the time. WindThis 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 Piornal is essentially constant during July, remaining within 0.1 miles per hour of 7.2 miles per hour throughout. For reference, on April 6, the windiest day of the year, the daily average wind speed is 8.2 miles per hour, while on September 9, the calmest day of the year, the daily average wind speed is 6.7 miles per hour. The hourly average wind direction in Piornal throughout July is predominantly from the west, with a peak proportion of 38% on July 12. Growing SeasonDefinitions 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 Piornal typically lasts for 6.0 months (183 days), from around April 26 to around October 26, rarely starting before March 31 or after May 17, and rarely ending before October 5 or after November 16. The month of July in Piornal is reliably fully 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 in Piornal are rapidly increasing during July, increasing by 625°F, from 907°F to 1,532°F, over the course of the month. Solar EnergyThis 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 in Piornal is essentially constant during July, remaining within 0.2 kWh of 8.0 kWh throughout. The highest average daily incident shortwave solar energy during July is 8.2 kWh on July 5. TopographyFor the purposes of this report, the geographical coordinates of Piornal are 40.117 deg latitude, -5.848 deg longitude, and 3,875 ft elevation. The topography within 2 miles of Piornal contains large variations in elevation, with a maximum elevation change of 2,808 feet and an average elevation above sea level of 3,542 feet. Within 10 miles contains large variations in elevation (5,253 feet). Within 50 miles also contains extreme variations in elevation (7,664 feet). The area within 2 miles of Piornal is covered by trees (46%), cropland (24%), and shrubs (23%), within 10 miles by trees (40%) and cropland (31%), and within 50 miles by cropland (39%) and trees (23%). Data SourcesThis report illustrates the typical weather in Piornal, based on a statistical analysis of historical hourly weather reports and model reconstructions from January 1, 1980 to December 31, 2016. Temperature and Dew PointThere is only a single weather station, Salamanca Airport, in our network suitable to be used as a proxy for the historical temperature and dew point records of Piornal. At a distance of 97 kilometers from Piornal, closer than our threshold of 150 kilometers, this station is deemed sufficiently nearby to be relied upon as our primary source for temperature and dew point records. The station records are corrected for the elevation difference between the station and Piornal according to the International Standard Atmosphere , and by the relative change present in the MERRA-2 satellite-era reanalysis between the two locations. Please note that the station records themselves may additionally have been back-filled using other nearby stations or the MERRA-2 reanalysis. Other DataAll 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. DisclaimerThe 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. |