Fall Weather at Francisco Sarabia International Airport MexicoDaily high temperatures decrease by 15°F, from 90°F to 75°F, rarely falling below 65°F or exceeding 95°F. Daily low temperatures decrease by 21°F, from 70°F to 50°F, rarely falling below 41°F or exceeding 74°F. For reference, on June 3, the hottest day of the year, temperatures at Francisco Sarabia International Airport typically range from 71°F to 96°F, while on January 7, the coldest day of the year, they range from 46°F to 71°F. The figure below shows you a compact characterization of the hourly average fall temperatures. 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. Tses, Namibia (8,832 miles away) is the far-away foreign place with temperatures most similar to Francisco Sarabia International Airport (view comparison). CloudsThe fall at Francisco Sarabia International Airport experiences very rapidly decreasing cloud cover, with the percentage of time that the sky is overcast or mostly cloudy decreasing from 56% to 38%. The highest chance of overcast or mostly cloudy conditions is 57% on September 5. The lowest chance of overcast or mostly cloudy conditions is 32% on November 10. The clearest day of the fall is November 10, with clear, mostly clear, or partly cloudy conditions 68% of the time. For reference, on September 5, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 57%, while on June 1, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 77%. PrecipitationA wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. At Francisco Sarabia International Airport, the chance of a wet day over the course of the fall is very rapidly decreasing, starting the season at 26% and ending it at 4%. For reference, the year's highest daily chance of a wet day is 30% on July 14, and its lowest chance is 2% on February 20. RainfallTo show variation within the season and not just the monthly totals, we show the rainfall accumulated over a sliding 31-day period centered around each day. The average sliding 31-day rainfall during the fall at Francisco Sarabia International Airport is rapidly decreasing, starting the season at 1.9 inches, when it rarely exceeds 3.9 inches or falls below 0.4 inches, and ending the season at 0.3 inches, when it rarely exceeds 0.7 inches or falls below -0.0 inches. SunOver the course of the fall at Francisco Sarabia International Airport, the length of the day is rapidly decreasing. From the start to the end of the season, the length of the day decreases by 1 hour, 58 minutes, implying an average daily decrease of 1 minute, 18 seconds, and weekly decrease of 9 minutes, 9 seconds. The shortest day of the fall is November 30, with 10 hours, 40 minutes of daylight and the longest day is September 1, with 12 hours, 38 minutes of daylight. The earliest sunrise of the fall at Francisco Sarabia International Airport is 6:34 AM on September 1 and the latest sunrise is 48 minutes later at 7:22 AM on November 30. The latest sunset is 7:12 PM on September 1 and the earliest sunset is 1 hour, 10 minutes earlier at 6:02 PM on November 28. Daylight saving time is not observed at Francisco Sarabia International Airport during 2024. For reference, on June 20, the longest day of the year, the Sun rises at 6:03 AM and sets 13 hours, 44 minutes later, at 7:47 PM, while on December 21, the shortest day of the year, it rises at 7:35 AM and sets 10 hours, 33 minutes later, at 6:08 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 the fall of 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 at Francisco Sarabia International Airport is rapidly decreasing during the fall, falling from 17% to 0% over the course of the season. For reference, on August 26, the muggiest day of the year, there are muggy conditions 18% of the time, while on December 8, 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 at Francisco Sarabia International Airport is decreasing during the fall, decreasing from 7.2 miles per hour to 5.9 miles per hour over the course of the season. For reference, on June 24, the windiest day of the year, the daily average wind speed is 7.7 miles per hour, while on November 6, the calmest day of the year, the daily average wind speed is 5.8 miles per hour. The lowest daily average wind speed during the fall is 5.8 miles per hour on November 7. The wind direction at Francisco Sarabia International Airport during the fall is predominantly out of the east from September 1 to November 24 and the west from November 24 to November 30. 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). While it does not do so every year, freezing temperatures are seen at Francisco Sarabia International Airport over some winters. The day least likely to be in the growing season is January 3, with a 80% chance. 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 Francisco Sarabia International Airport are very rapidly increasing during the fall, increasing by 1,962°F, from 5,771°F to 7,733°F, over the course of the season. 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 at Francisco Sarabia International Airport is very rapidly decreasing during the fall, falling by 2.1 kWh, from 6.4 kWh to 4.3 kWh, over the course of the season. TopographyFor the purposes of this report, the geographical coordinates of Francisco Sarabia International Airport are 25.568 deg latitude, -103.411 deg longitude, and 3,684 ft elevation. The topography within 2 miles of Francisco Sarabia International Airport contains only modest variations in elevation, with a maximum elevation change of 174 feet and an average elevation above sea level of 3,689 feet. Within 10 miles contains only modest variations in elevation (1,998 feet). Within 50 miles contains large variations in elevation (6,729 feet). The area within 2 miles of Francisco Sarabia International Airport is covered by herbaceous vegetation (43%) and artificial surfaces (35%), within 10 miles by shrubs (35%) and cropland (26%), and within 50 miles by shrubs (71%). Data SourcesThis report illustrates the typical weather at Francisco Sarabia International Airport, based on a statistical analysis of historical hourly weather reports and model reconstructions from January 1, 1980 to December 31, 2016. Temperature and Dew PointFrancisco Sarabia International Airport 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. There are no other weather stations in our network within 200 kilometers of this location. Consequently, in the case of missing or erroneous measurements from this station, we fall back on NASA's MERRA-2 modern-era reanalysis , adjusted according to typical seasonal and diurnal differences between this station and the wide-area MERRA-2 reconstructed values.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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