April Weather in José de San Martín ArgentinaDaily high temperatures decrease by 8°F, from 59°F to 51°F, rarely falling below 44°F or exceeding 69°F. Daily low temperatures decrease by 4°F, from 37°F to 33°F, rarely falling below 24°F or exceeding 46°F. For reference, on January 28, the hottest day of the year, temperatures in José de San Martín typically range from 44°F to 71°F, while on July 16, the coldest day of the year, they range from 26°F to 41°F. The figure below shows you a compact characterization of the hourly average temperatures for the quarter of the year centered on April. 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. Saugues, France (7,648 miles away) is the far-away foreign place with temperatures most similar to José de San Martín (view comparison). CloudsThe month of April in José de San Martín experiences gradually increasing cloud cover, with the percentage of time that the sky is overcast or mostly cloudy increasing from 47% to 55%. The clearest day of the month is April 1, with clear, mostly clear, or partly cloudy conditions 53% of the time. For reference, on May 20, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 60%, while on January 24, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 66%. PrecipitationA wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. In José de San Martín, the chance of a wet day over the course of April is rapidly increasing, starting the month at 22% and ending it at 29%. For reference, the year's highest daily chance of a wet day is 38% on June 10, and its lowest chance is 14% on January 11. Over the course of April in José de San Martín, the chance of a day with only rain increases from 21% to 25%, the chance of a day with mixed snow and rain increases from 1% to 3%, and the chance of a day with only snow remains an essentially constant 1% throughout. 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 April in José de San Martín is gradually increasing, starting the month at 1.6 inches, when it rarely exceeds 3.3 inches or falls below 0.4 inches, and ending the month at 2.1 inches, when it rarely exceeds 3.7 inches or falls below 0.6 inches. SnowfallAs with rainfall, we consider the snowfall accumulated over a sliding 31-day period centered around each day. The average sliding 31-day snowfall during April in José de San Martín is increasing, starting the month at 0.3 inches, when it rarely exceeds 1.1 inches, and ending the month at 2.1 inches, when it rarely exceeds 6.8 inches. SunOver the course of April in José de San Martín, the length of the day is rapidly decreasing. From the start to the end of the month, the length of the day decreases by 1 hour, 22 minutes, implying an average daily decrease of 2 minutes, 49 seconds, and weekly decrease of 19 minutes, 46 seconds. The shortest day of the month is April 30, with 10 hours, 9 minutes of daylight and the longest day is April 1, with 11 hours, 31 minutes of daylight. The earliest sunrise of the month in José de San Martín is 7:59 AM on April 1 and the latest sunrise is 35 minutes later at 8:34 AM on April 30. The latest sunset is 7:30 PM on April 1 and the earliest sunset is 47 minutes earlier at 6:43 PM on April 30. Daylight saving time is not observed in José de San Martín during 2024. For reference, on December 21, the longest day of the year, the Sun rises at 5:55 AM and sets 15 hours, 30 minutes later, at 9:25 PM, while on June 20, the shortest day of the year, it rises at 9:17 AM and sets 8 hours, 53 minutes later, at 6:10 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 April 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 José de San Martín is essentially constant during April, remaining around 0% throughout. For reference, on January 1, the muggiest day of the year, there are muggy conditions 0% of the time, while on January 18, 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 José de San Martín is essentially constant during April, remaining within 0.1 miles per hour of 14.1 miles per hour throughout. For reference, on December 8, the windiest day of the year, the daily average wind speed is 16.7 miles per hour, while on June 3, the calmest day of the year, the daily average wind speed is 13.4 miles per hour. The highest daily average wind speed during April is 14.2 miles per hour on April 3. The hourly average wind direction in José de San Martín throughout April is predominantly from the west, with a peak proportion of 74% on April 1. 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 José de San Martín typically lasts for 2.7 months (84 days), from around November 26 to around February 17, rarely starting before October 27, or ending after March 23. The month of April in José de San Martín is very likely fully outside of the growing season, with the chance that a given day is in the growing season gradually decreasing from 4% to -0% over the course of the month. 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 José de San Martín are gradually increasing during April, increasing by 45°F, from 1,128°F to 1,173°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 José de San Martín is rapidly decreasing during April, falling by 1.5 kWh, from 4.0 kWh to 2.5 kWh, over the course of the month. TopographyFor the purposes of this report, the geographical coordinates of José de San Martín are -44.050 deg latitude, -70.470 deg longitude, and 2,297 ft elevation. The topography within 2 miles of José de San Martín contains significant variations in elevation, with a maximum elevation change of 709 feet and an average elevation above sea level of 2,353 feet. Within 10 miles contains significant variations in elevation (2,070 feet). Within 50 miles contains large variations in elevation (4,475 feet). The area within 2 miles of José de San Martín is covered by trees (29%), grassland (25%), shrubs (21%), and sparse vegetation (16%), within 10 miles by sparse vegetation (38%) and grassland (26%), and within 50 miles by sparse vegetation (42%) and shrubs (20%). Data SourcesThis report illustrates the typical weather in José de San Martín, 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, Alto Palena Airport, in our network suitable to be used as a proxy for the historical temperature and dew point records of José de San Martín. At a distance of 118 kilometers from José de San Martín, 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 José de San Martín 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. 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