September Weather in Yilkiqi ChinaDaily high temperatures decrease by 11°F, from 88°F to 77°F, rarely falling below 68°F or exceeding 96°F. Daily low temperatures decrease by 10°F, from 63°F to 53°F, rarely falling below 48°F or exceeding 68°F. For reference, on July 23, the hottest day of the year, temperatures in Yilkiqi typically range from 71°F to 95°F, while on January 13, the coldest day of the year, they range from 20°F to 37°F. The figure below shows you a compact characterization of the hourly average temperatures for the quarter of the year centered on September. 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. Clay Center, Kansas, United States (7,089 miles away) is the far-away foreign place with temperatures most similar to Yilkiqi (view comparison). CloudsThe month of September in Yilkiqi experiences increasing cloud cover, with the percentage of time that the sky is overcast or mostly cloudy increasing from 12% to 22%. The clearest day of the month is September 1, with clear, mostly clear, or partly cloudy conditions 88% of the time. For reference, on March 23, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 61%, while on August 9, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 90%. PrecipitationA wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. In Yilkiqi, the chance of a wet day over the course of September is gradually decreasing, starting the month at 4% and ending it at 2%. For reference, the year's highest daily chance of a wet day is 6% on August 23, and its lowest chance is 0% on December 8. 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 September in Yilkiqi is essentially constant, remaining about 0.2 inches throughout, and rarely exceeding 0.8 inches. SunOver the course of September in Yilkiqi, 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, 10 minutes, implying an average daily decrease of 2 minutes, 24 seconds, and weekly decrease of 16 minutes, 50 seconds. The shortest day of the month is September 30, with 11 hours, 49 minutes of daylight and the longest day is September 1, with 12 hours, 59 minutes of daylight. The earliest sunrise of the month in Yilkiqi is 8:20 AM on September 1 and the latest sunrise is 25 minutes later at 8:45 AM on September 30. The latest sunset is 9:20 PM on September 1 and the earliest sunset is 45 minutes earlier at 8:35 PM on September 30. Daylight saving time is not observed in Yilkiqi during 2024. For reference, on June 20, the longest day of the year, the Sun rises at 7:28 AM and sets 14 hours, 48 minutes later, at 10:16 PM, while on December 21, the shortest day of the year, it rises at 10:03 AM and sets 9 hours, 32 minutes later, at 7:35 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 September 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 Yilkiqi is essentially constant during September, remaining around 0% throughout. 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 Yilkiqi is essentially constant during September, remaining within 0.1 miles per hour of 6.6 miles per hour throughout. For reference, on May 19, the windiest day of the year, the daily average wind speed is 7.6 miles per hour, while on December 23, the calmest day of the year, the daily average wind speed is 4.1 miles per hour. The hourly average wind direction in Yilkiqi throughout September is predominantly from the east, with a peak proportion of 40% on September 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 Yilkiqi typically lasts for 7.9 months (242 days), from around March 14 to around November 11, rarely starting before February 27 or after March 29, and rarely ending before October 26 or after November 27. The month of September in Yilkiqi 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 Yilkiqi are rapidly increasing during September, increasing by 580°F, from 3,766°F to 4,345°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 Yilkiqi is decreasing during September, falling by 1.2 kWh, from 6.3 kWh to 5.1 kWh, over the course of the month. TopographyFor the purposes of this report, the geographical coordinates of Yilkiqi are 37.961 deg latitude, 77.249 deg longitude, and 4,341 ft elevation. The topography within 2 miles of Yilkiqi contains only modest variations in elevation, with a maximum elevation change of 144 feet and an average elevation above sea level of 4,333 feet. Within 10 miles contains only modest variations in elevation (804 feet). Within 50 miles contains significant variations in elevation (8,970 feet). The area within 2 miles of Yilkiqi is covered by cropland (70%) and artificial surfaces (19%), within 10 miles by cropland (52%) and bare soil (29%), and within 50 miles by bare soil (41%) and grassland (33%). Data SourcesThis report illustrates the typical weather in Yilkiqi, based on a statistical analysis of historical hourly weather reports and model reconstructions from January 1, 1980 to December 31, 2016. Yilkiqi is further than 200 kilometers from the nearest reliable weather station, so the weather-related data on this page were taken entirely from NASA's MERRA-2 satellite-era reanalysis . 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. The temperature and dew point estimates are corrected for the difference between the reference elevation of the MERRA-2 grid cell and the elevation of Yilkiqi, according to the International Standard Atmosphere . 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. 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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