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December Weather in Yanjiang China

Daily high temperatures decrease by 6°F, from 57°F to 50°F, rarely falling below 44°F or exceeding 63°F.

Daily low temperatures decrease by 6°F, from 44°F to 38°F, rarely falling below 31°F or exceeding 51°F.

For reference, on August 1, the hottest day of the year, temperatures in Yanjiang typically range from 73°F to 88°F, while on January 14, the coldest day of the year, they range from 37°F to 50°F.

Average High and Low Temperature in December in Yanjiang

Average High and Low Temperature in December in YanjiangDec112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030313130°F30°F35°F35°F40°F40°F45°F45°F50°F50°F55°F55°F60°F60°F65°F65°F70°F70°F75°F75°FNovJanDec 157°FDec 157°F44°F44°FDec 3150°FDec 3150°F38°F38°FDec 1154°FDec 1154°F41°F41°FDec 2151°FDec 2151°F39°F39°F
The daily average high (red line) and low (blue line) temperature, with 25th to 75th and 10th to 90th percentile bands. The thin dotted lines are the corresponding average perceived temperatures.

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.

Average Hourly Temperature in December in Yanjiang

Average Hourly Temperature in December in YanjiangDec112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030313112 AM12 AM2 AM2 AM4 AM4 AM6 AM6 AM8 AM8 AM10 AM10 AM12 PM12 PM2 PM2 PM4 PM4 PM6 PM6 PM8 PM8 PM10 PM10 PM12 AM12 AMNovJanvery coldvery coldcoldcoolcomfortable
frigid 15°F freezing 32°F very cold 45°F cold 55°F cool 65°F comfortable 75°F warm 85°F hot 95°F sweltering
The average hourly temperature, color coded into bands. The shaded overlays indicate night and civil twilight.

College Park, Georgia, United States (7,999 miles away) and Belhaven, North Carolina, United States (7,908 miles) are the far-away foreign places with temperatures most similar to Yanjiang (view comparison).

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The month of December in Yanjiang experiences essentially constant cloud cover, with the percentage of time that the sky is overcast or mostly cloudy remaining about 26% throughout the month.

The clearest day of the month is December 10, with clear, mostly clear, or partly cloudy conditions 75% of the time.

For reference, on July 3, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 63%, while on January 29, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 77%.

Cloud Cover Categories in December in Yanjiang

Cloud Cover Categories in December in YanjiangDec11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%NovJanDec 174%Dec 174%Dec 3174%Dec 3174%Dec 1175%Dec 1175%Dec 2174%Dec 2174%clearmostly clearpartly cloudymostly cloudyovercast
0% clear 20% mostly clear 40% partly cloudy 60% mostly cloudy 80% overcast 100%
The percentage of time spent in each cloud cover band, categorized by the percentage of the sky covered by clouds.

A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. In Yanjiang, the chance of a wet day over the course of December 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 56% on July 13, and its lowest chance is 3% on December 31.

Probability of Precipitation in December in Yanjiang

The percentage of days in which various types of precipitation are observed, excluding trace quantities: rain alone, snow alone, and mixed (both rain and snow fell in the same day).

Rainfall

To 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 Yanjiang is essentially constant, remaining about 0.2 inches throughout, and rarely exceeding 0.6 inches.

Average Monthly Rainfall in December in Yanjiang

Average Monthly Rainfall in December in YanjiangDec11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310.0 in0.0 in0.2 in0.2 in0.4 in0.4 in0.6 in0.6 in0.8 in0.8 in1.0 in1.0 in1.2 in1.2 in1.4 in1.4 in1.6 in1.6 inNovJanDec 10.3 inDec 10.3 inDec 310.1 inDec 310.1 inDec 110.2 inDec 110.2 inDec 210.1 inDec 210.1 in
The average rainfall (solid line) accumulated over the course of a sliding 31-day period centered on the day in question, with 25th to 75th and 10th to 90th percentile bands. The thin dotted line is the corresponding average snowfall.

Over the course of December in Yanjiang, the length of the day is essentially constant. The shortest day of the month is December 21, with 10 hours, 12 minutes of daylight and the longest day is December 1, with 10 hours, 21 minutes of daylight.

Hours of Daylight and Twilight in December in Yanjiang

Hours of Daylight and Twilight in December in YanjiangDec11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310 hr24 hr4 hr20 hr8 hr16 hr12 hr12 hr16 hr8 hr20 hr4 hr24 hr0 hrNovJanDec 2110 hr, 12 minDec 2110 hr, 12 minnightnightdaydayDec 110 hr, 21 minDec 110 hr, 21 min
The number of hours during which the Sun is visible (black line). From bottom (most yellow) to top (most gray), the color bands indicate: full daylight, twilight (civil, nautical, and astronomical), and full night.

The earliest sunrise of the month in Yanjiang is 7:39 AM on December 1 and the latest sunrise is 17 minutes later at 7:57 AM on December 31.

The earliest sunset is 6:00 PM on December 3 and the latest sunset is 11 minutes later at 6:11 PM on December 31.

Daylight saving time is not observed in Yanjiang during 2024.

For reference, on June 20, the longest day of the year, the Sun rises at 6:00 AM and sets 14 hours, 5 minutes later, at 8:05 PM, while on December 21, the shortest day of the year, it rises at 7:53 AM and sets 10 hours, 12 minutes later, at 6:05 PM.

Sunrise & Sunset with Twilight in December in Yanjiang

The solar day over the course of December. From bottom to top, the black lines are the previous solar midnight, sunrise, solar noon, sunset, and the next solar midnight. The day, twilights (civil, nautical, and astronomical), and night are indicated by the color bands from yellow to gray.

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.

Solar Elevation and Azimuth in December in Yanjiang

Solar Elevation and Azimuth in December in YanjiangDec112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030313112 AM12 AM2 AM2 AM4 AM4 AM6 AM6 AM8 AM8 AM10 AM10 AM12 PM12 PM2 PM2 PM4 PM4 PM6 PM6 PM8 PM8 PM10 PM10 PM12 AM12 AMNovJan00101020202030304000010102020303030
northeastsouthwest
Solar elevation and azimuth over the course of December 2024. The black lines are lines of constant solar elevation (the angle of the sun above the horizon, in degrees). The background color fills indicate the azimuth (the compass bearing) of the sun. The lightly tinted areas at the boundaries of the cardinal compass points indicate the implied intermediate directions (northeast, southeast, southwest, and northwest).

The 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.

Moon Rise, Set & Phases in December in Yanjiang

Moon Rise, Set & Phases in December in YanjiangDec112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030313112 AM12 AM4 AM4 AM8 AM8 AM12 PM12 PM4 PM4 PM8 PM8 PM12 AM12 AMNovJanNov 18:48 PMNov 18:48 PMNov 165:29 AMNov 165:29 AMDec 12:22 PMDec 12:22 PMDec 155:02 PMDec 155:02 PMDec 316:28 AMDec 316:28 AMJan 146:28 AMJan 146:28 AMJan 298:37 PMJan 298:37 PM6:51 AM6:51 AM5:55 PM5:55 PM5:24 PM5:24 PM7:44 AM7:44 AM7:38 AM7:38 AM5:46 PM5:46 PM5:44 PM5:44 PM8:48 AM8:48 AM8:21 AM8:21 AM6:23 PM6:23 PM5:34 PM5:34 PM8:22 AM8:22 AM7:49 AM7:49 AM6:19 PM6:19 PM
The time in which the moon is above the horizon (light blue area), with new moons (dark gray lines) and full moons (blue lines) indicated. The shaded overlays indicate night and civil twilight.
Dec 2024IlluminationMoonriseMoonsetMoonriseMeridian PassingDistance
1
0%7:38 AMESE5:46 PMWSW-12:42 PMS246,371 mi
2
1%8:38 AMESE6:36 PMWSW-1:37 PMS244,336 mi
3
4%9:35 AMESE7:32 PMWSW-2:34 PMS242,222 mi
4
10%10:28 AMESE8:34 PMWSW-3:31 PMS240,079 mi
5
17%11:16 AMESE9:39 PMWSW-4:27 PMS237,933 mi
6
26%11:57 AMESE10:44 PMWSW-5:20 PMS235,802 mi
7
37%12:33 PMESE11:49 PMWSW-6:11 PMS233,709 mi
8
50%1:06 PME--6:58 PMS231,708 mi
9
60%-12:53 AMW1:37 PME7:45 PMS229,890 mi
10
71%-1:57 AMW2:08 PME8:33 PMS228,392 mi
11
81%-3:02 AMW2:41 PMENE9:22 PMS227,380 mi
12
90%-4:10 AMWNW3:17 PMENE10:15 PMS227,027 mi
13
96%-5:20 AMWNW3:58 PMENE11:12 PMS227,473 mi
14
98%-6:32 AMWNW4:47 PMENE--
15
100%-7:43 AMWNW5:44 PMENE12:13 AMS228,791 mi
16
100%-8:48 AMWNW6:47 PMENE1:16 AMS230,946 mi
17
98%-9:44 AMWNW7:53 PMENE2:18 AMS233,790 mi
18
93%-10:32 AMWNW8:58 PMENE3:15 AMS237,084 mi
19
86%-11:11 AMWNW10:01 PMENE4:08 AMS240,534 mi
20
78%-11:44 AMWNW10:59 PMENE4:55 AMS243,848 mi
21
69%-12:13 PMW11:55 PME5:39 AMS246,761 mi
22
60%-12:39 PMW-6:19 AMS249,059 mi
23
50%12:49 AME1:05 PMW-6:58 AMS250,596 mi
24
40%1:41 AME1:30 PMW-7:36 AMS251,293 mi
25
31%2:35 AMESE1:57 PMWSW-8:16 AMS251,142 mi
26
22%3:30 AMESE2:26 PMWSW-8:58 AMS250,200 mi
27
15%4:27 AMESE3:00 PMWSW-9:43 AMS248,584 mi
28
8%5:26 AMESE3:40 PMWSW-10:33 AMS246,454 mi
29
3%6:26 AMESE4:27 PMWSW-11:27 AMS244,001 mi
30
1%7:26 AMESE5:22 PMWSW-12:24 PMS241,429 mi
31
0%8:21 AMESE6:23 PMWSW-1:23 PMS238,927 mi

We 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 Yanjiang is essentially constant during December, remaining around 0% throughout.

For reference, on July 26, the muggiest day of the year, there are muggy conditions 99% of the time, while on January 1, the least muggy day of the year, there are muggy conditions 0% of the time.

Humidity Comfort Levels in December in Yanjiang

Humidity Comfort Levels in December in YanjiangDec11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%NovJanDec 10%Dec 10%Dec 310%Dec 310%Dec 110%Dec 110%Dec 210%Dec 210%comfortablecomfortabledrydryhumidhumid
dry 55°F comfortable 60°F humid 65°F muggy 70°F oppressive 75°F miserable
The percentage of time spent at various humidity comfort levels, categorized by dew point.

This 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 Yanjiang is essentially constant during December, remaining within 0.1 miles per hour of 5.5 miles per hour throughout.

For reference, on March 28, the windiest day of the year, the daily average wind speed is 6.7 miles per hour, while on July 28, the calmest day of the year, the daily average wind speed is 4.9 miles per hour.

The lowest daily average wind speed during December is 5.5 miles per hour on December 30.

Average Wind Speed in December in Yanjiang

The average of mean hourly wind speeds (dark gray line), with 25th to 75th and 10th to 90th percentile bands.

The hourly average wind direction in Yanjiang throughout December is predominantly from the east, with a peak proportion of 46% on December 31.

Wind Direction in December in Yanjiang

Wind Direction in December in YanjiangDec11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310%100%20%80%40%60%60%40%80%20%100%0%NovJaneastnorthsouth
northeastsouthwest
The percentage of hours in which the mean wind direction is from each of the four cardinal wind directions, excluding hours in which the mean wind speed is less than 1.0 mph. The lightly tinted areas at the boundaries are the percentage of hours spent in the implied intermediate directions (northeast, southeast, southwest, and northwest).

Definitions 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 Yanjiang typically lasts for 11 months (325 days), from around January 29 to around December 19, rarely starting after February 23, or ending before November 30.

During December in Yanjiang, the chance that a given day is within the growing season is very rapidly decreasing falling from 88% to 23% over the course of the month.

Time Spent in Various Temperature Bands and the Growing Season in December in Yanjiang

Time Spent in Various Temperature Bands and the Growing Season in December in Yanjianggrowing seasonDec11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%NovJan88%Dec 188%Dec 1Dec 3123%Dec 3123%70%Dec 1170%Dec 11Dec 2143%Dec 2143%very coldcoldcoolcomfortablefreezing
frigid 15°F freezing 32°F very cold 45°F cold 55°F cool 65°F comfortable 75°F warm 85°F hot 95°F sweltering
The percentage of time spent in various temperature bands. The black line is the percentage chance that a given day is 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 Yanjiang are gradually increasing during December, increasing by 36°F, from 5,242°F to 5,278°F, over the course of the month.

Growing Degree Days in December in Yanjiang

The average growing degree days accumulated over the course of December, with 25th to 75th and 10th to 90th percentile bands.

This 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 Yanjiang is essentially constant during December, remaining within 0.1 kWh of 2.9 kWh throughout.

The lowest average daily incident shortwave solar energy during December is 2.9 kWh on December 21.

Average Daily Incident Shortwave Solar Energy in December in Yanjiang

Average Daily Incident Shortwave Solar Energy in December in YanjiangDec11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310.0 kWh0.0 kWh0.5 kWh0.5 kWh1.0 kWh1.0 kWh1.5 kWh1.5 kWh2.0 kWh2.0 kWh2.5 kWh2.5 kWh3.0 kWh3.0 kWh3.5 kWh3.5 kWh4.0 kWh4.0 kWh4.5 kWh4.5 kWhNovJanDec 212.9 kWhDec 212.9 kWhDec 13.0 kWhDec 13.0 kWhDec 312.9 kWhDec 312.9 kWhDec 112.9 kWhDec 112.9 kWh
The average daily shortwave solar energy reaching the ground per square meter (orange line), with 25th to 75th and 10th to 90th percentile bands.

For the purposes of this report, the geographical coordinates of Yanjiang are 30.121 deg latitude, 104.648 deg longitude, and 1,198 ft elevation.

The topography within 2 miles of Yanjiang contains only modest variations in elevation, with a maximum elevation change of 338 feet and an average elevation above sea level of 1,226 feet. Within 10 miles contains only modest variations in elevation (551 feet). Within 50 miles contains significant variations in elevation (2,585 feet).

The area within 2 miles of Yanjiang is covered by artificial surfaces (44%), cropland (32%), and water (14%), within 10 miles by cropland (70%), and within 50 miles by cropland (70%) and shrubs (13%).

This report illustrates the typical weather in Yanjiang, based on a statistical analysis of historical hourly weather reports and model reconstructions from January 1, 1980 to December 31, 2016.

Temperature and Dew Point

There is only a single weather station, Chengdu Shuangliu International Airport, in our network suitable to be used as a proxy for the historical temperature and dew point records of Yanjiang.

At a distance of 84 kilometers from Yanjiang, 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 Yanjiang 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 Data

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.

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.

Disclaimer

The 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.

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