December Weather in Yanji ChinaDaily high temperatures decrease by 9°F, from 29°F to 19°F, rarely falling below 8°F or exceeding 40°F. Daily low temperatures decrease by 10°F, from 12°F to 2°F, rarely falling below -8°F or exceeding 22°F. For reference, on July 31, the hottest day of the year, temperatures in Yanji typically range from 65°F to 85°F, while on January 18, the coldest day of the year, they range from 0°F to 19°F. The figure below shows you a compact characterization of the hourly average temperatures for the quarter of the year centered on December. 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. West Fargo, North Dakota, United States (5,622 miles away) is the far-away foreign place with temperatures most similar to Yanji (view comparison). CloudsThe month of December in Yanji experiences essentially constant cloud cover, with the percentage of time that the sky is overcast or mostly cloudy remaining about 34% throughout the month. The highest chance of overcast or mostly cloudy conditions is 35% on December 18. The clearest day of the month is December 31, with clear, mostly clear, or partly cloudy conditions 67% of the time. For reference, on July 26, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 50%, while on October 18, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 71%. PrecipitationA wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. In Yanji, the chance of a wet day over the course of December is gradually decreasing, starting the month at 5% and ending it at 3%. For reference, the year's highest daily chance of a wet day is 43% on July 16, and its lowest chance is 1% on January 26. Over the course of December in Yanji, the chance of a day with only rain remains an essentially constant 1% throughout, the chance of a day with mixed snow and rain remains an essentially constant 1% throughout, and the chance of a day with only snow remains an essentially constant 3% 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 December in Yanji is essentially constant, remaining about 0.1 inches throughout, and rarely exceeding 0.3 inches or falling below -0.0 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 December in Yanji is essentially constant, remaining about 1.4 inches throughout, and rarely exceeding 3.9 inches or falling below -0.0 inches. SunOver the course of December in Yanji, the length of the day is essentially constant. The shortest day of the month is December 21, with 9 hours, 1 minute of daylight and the longest day is December 1, with 9 hours, 15 minutes of daylight. The earliest sunrise of the month in Yanji is 6:33 AM on December 1 and the latest sunrise is 20 minutes later at 6:52 AM on December 31. The earliest sunset is 3:47 PM on December 9 and the latest sunset is 10 minutes later at 3:57 PM on December 31. Daylight saving time is not observed in Yanji during 2024. For reference, on June 20, the longest day of the year, the Sun rises at 3:43 AM and sets 15 hours, 21 minutes later, at 7:04 PM, while on December 21, the shortest day of the year, it rises at 6:49 AM and sets 9 hours, 1 minute later, at 3:50 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 December 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 Yanji is essentially constant during December, remaining around 0% throughout. For reference, on August 2, the muggiest day of the year, there are muggy conditions 46% of the time, while on October 6, 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 Yanji is gradually increasing during December, increasing from 7.4 miles per hour to 8.2 miles per hour over the course of the month. For reference, on February 3, the windiest day of the year, the daily average wind speed is 8.6 miles per hour, while on August 11, the calmest day of the year, the daily average wind speed is 4.2 miles per hour. The hourly average wind direction in Yanji throughout December is predominantly from the west, with a peak proportion of 81% on December 26. Water TemperatureYanji is located near a large body of water (e.g., ocean, sea, or large lake). This section reports on the wide-area average surface temperature of that water. The average surface water temperature in Yanji is rapidly decreasing during December, falling by 7°F, from 44°F to 37°F, over the course of the month. 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 Yanji typically lasts for 5.4 months (164 days), from around April 26 to around October 7, rarely starting before April 12 or after May 10, and rarely ending before September 23 or after October 22. The month of December in Yanji is reliably fully outside of 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 Yanji are essentially constant during December, remaining around 2,691°F throughout. 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 Yanji is essentially constant during December, remaining within 0.1 kWh of 2.0 kWh throughout. The lowest average daily incident shortwave solar energy during December is 1.9 kWh on December 18. TopographyFor the purposes of this report, the geographical coordinates of Yanji are 42.908 deg latitude, 129.508 deg longitude, and 584 ft elevation. The topography within 2 miles of Yanji contains only modest variations in elevation, with a maximum elevation change of 430 feet and an average elevation above sea level of 629 feet. Within 10 miles contains only modest variations in elevation (1,811 feet). Within 50 miles contains very significant variations in elevation (5,112 feet). The area within 2 miles of Yanji is covered by artificial surfaces (90%), within 10 miles by trees (46%) and cropland (40%), and within 50 miles by trees (76%) and cropland (12%). Data SourcesThis report illustrates the typical weather in Yanji, based on a statistical analysis of historical hourly weather reports and model reconstructions from January 1, 1980 to December 31, 2016. Yanji 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 Yanji, 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. 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. |