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September Weather in Yijing China

Daily high temperatures decrease by 10°F, from 72°F to 62°F, rarely falling below 53°F or exceeding 79°F.

Daily low temperatures decrease by 11°F, from 52°F to 41°F, rarely falling below 32°F or exceeding 58°F.

For reference, on July 12, the hottest day of the year, temperatures in Yijing typically range from 60°F to 80°F, while on January 11, the coldest day of the year, they range from 3°F to 22°F.

Average High and Low Temperature in September in Yijing

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 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.

Average Hourly Temperature in September in Yijing

Average Hourly Temperature in September in YijingSep11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303012 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 AMAugOctvery coldvery coldcoldcoolcomfortablewarmfreezing
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.

Little Falls, Minnesota, United States (6,345 miles away) is the far-away foreign place with temperatures most similar to Yijing (view comparison).

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The month of September in Yijing experiences essentially constant cloud cover, with the percentage of time that the sky is overcast or mostly cloudy remaining about 35% throughout the month.

The clearest day of the month is September 29, with clear, mostly clear, or partly cloudy conditions 65% of the time.

For reference, on June 17, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 43%, while on December 1, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 76%.

Cloud Cover Categories in September in Yijing

Cloud Cover Categories in September in YijingSep1122334455667788991010111112121313141415151616171718181919202021212222232324242525262627272828292930300%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%AugOctSep 164%Sep 164%Sep 3065%Sep 3065%Sep 1164%Sep 1164%Sep 2165%Sep 2165%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 Yijing, the chance of a wet day over the course of September is rapidly decreasing, starting the month at 24% and ending it at 17%.

For reference, the year's highest daily chance of a wet day is 36% on July 31, and its lowest chance is 0% on December 17.

Probability of Precipitation in September in Yijing

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 September in Yijing is rapidly decreasing, starting the month at 2.3 inches, when it rarely exceeds 4.2 inches or falls below 0.9 inches, and ending the month at 1.2 inches, when it rarely exceeds 2.5 inches or falls below 0.3 inches.

Average Monthly Rainfall in September in Yijing

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 September in Yijing, 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, 13 minutes, implying an average daily decrease of 2 minutes, 30 seconds, and weekly decrease of 17 minutes, 31 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 13 hours, 2 minutes of daylight.

Hours of Daylight and Twilight in September in Yijing

Hours of Daylight and Twilight in September in YijingSep1122334455667788991010111112121313141415151616171718181919202021212222232324242525262627272828292930300 hr24 hr4 hr20 hr8 hr16 hr12 hr12 hr16 hr8 hr20 hr4 hr24 hr0 hrAugOctSep 2212 hr, 9 minSep 2212 hr, 9 minnightnightdaydaySep 113 hr, 2 minSep 113 hr, 2 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 Yijing is 6:00 AM on September 1 and the latest sunrise is 26 minutes later at 6:27 AM on September 30.

The latest sunset is 7:02 PM on September 1 and the earliest sunset is 46 minutes earlier at 6:16 PM on September 30.

Daylight saving time is not observed in Yijing during 2024.

For reference, on June 20, the longest day of the year, the Sun rises at 5:06 AM and sets 14 hours, 55 minutes later, at 8:01 PM, while on December 21, the shortest day of the year, it rises at 7:47 AM and sets 9 hours, 25 minutes later, at 5:12 PM.

Sunrise & Sunset with Twilight in September in Yijing

Sunrise & Sunset with Twilight in September in YijingSep1122334455667788991010111112121313141415151616171718181919202021212222232324242525262627272828292930302 AM4 AM6 AM8 AM10 AM12 PM2 PM4 PM6 PM8 PM10 PM12 AMAugOct6:00 AM6:00 AMSep 17:02 PMSep 17:02 PM6:27 AM6:27 AMSep 306:16 PMSep 306:16 PM6:09 AM6:09 AMSep 116:46 PMSep 116:46 PMSolarMidnightSolarMidnightSolarNoonSunriseSunset
The solar day over the course of September. 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 September in Yijing

Solar Elevation and Azimuth in September in YijingSep11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303012 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 AMAugOct0010102020203030404050500001010202030303040405060
northeastsouthwest
Solar elevation and azimuth over the course of September 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 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.

Moon Rise, Set & Phases in September in Yijing

Moon Rise, Set & Phases in September in YijingSep11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303012 AM12 AM4 AM4 AM8 AM8 AM12 PM12 PM4 PM4 PM8 PM8 PM12 AM12 AMAugOctAug 47:14 PMAug 47:14 PMAug 202:26 AMAug 202:26 AMSep 39:56 AMSep 39:56 AMSep 1810:35 AMSep 1810:35 AMOct 32:50 AMOct 32:50 AMOct 177:27 PMOct 177:27 PM4:52 AM4:52 AM7:56 PM7:56 PM7:23 PM7:23 PM5:58 AM5:58 AM5:53 AM5:53 AM7:14 PM7:14 PM6:18 PM6:18 PM6:05 AM6:05 AM6:43 AM6:43 AM6:19 PM6:19 PM5:36 PM5:36 PM7:29 AM7:29 AM
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.
Sep 2024IlluminationMoonriseMoonsetMoonriseMeridian PassingDistance
1
4%3:48 AMENE6:28 PMWNW-11:12 AMS248,266 mi
2
1%4:52 AMENE6:52 PMWNW-11:56 AMS249,848 mi
3
0%5:53 AMENE7:14 PMW-12:36 PMS251,086 mi
4
1%6:53 AME7:33 PMW-1:15 PMS251,945 mi
5
4%7:51 AME7:53 PMW-1:54 PMS252,372 mi
6
9%8:50 AME8:13 PMWSW-2:32 PMS252,297 mi
7
15%9:49 AMESE8:35 PMWSW-3:13 PMS251,643 mi
8
23%10:50 AMESE9:00 PMWSW-3:55 PMS250,343 mi
9
32%11:53 AMESE9:31 PMWSW-4:42 PMS248,353 mi
10
42%12:57 PMSE10:08 PMSW-5:32 PMS245,673 mi
11
50%2:01 PMSE10:54 PMSW-6:27 PMS242,368 mi
12
63%3:01 PMSE11:51 PMSW-7:26 PMS238,580 mi
13
73%3:54 PMSE--8:26 PMS234,541 mi
14
83%-12:58 AMSW4:39 PMESE9:26 PMS230,560 mi
15
91%-2:12 AMWSW5:17 PMESE10:23 PMS226,995 mi
16
97%-3:29 AMWSW5:50 PMESE11:18 PMS224,204 mi
17
99%-4:47 AMWSW6:18 PME--
18
100%-6:05 AMW6:45 PME12:10 AMS222,485 mi
19
99%-7:22 AMW7:11 PME1:01 AMS222,020 mi
20
96%-8:40 AMWNW7:40 PMENE1:52 AMS222,845 mi
21
90%-9:58 AMWNW8:12 PMENE2:44 AMS224,838 mi
22
81%-11:16 AMWNW8:50 PMENE3:39 AMS227,752 mi
23
71%-12:31 PMNW9:35 PMNE4:36 AMS231,263 mi
24
60%-1:39 PMNW10:29 PMNE5:35 AMS235,032 mi
25
50%-2:37 PMNW11:30 PMNE6:34 AMS238,753 mi
26
38%-3:24 PMNW-7:30 AMS242,192 mi
27
28%12:35 AMNE4:02 PMWNW-8:22 AMS245,195 mi
28
19%1:41 AMENE4:32 PMWNW-9:10 AMS247,683 mi
29
12%2:44 AMENE4:57 PMWNW-9:55 AMS249,636 mi
30
6%3:46 AMENE5:19 PMWNW-10:36 AMS251,070 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 Yijing is essentially constant during September, remaining around 0% throughout.

For reference, on July 30, the muggiest day of the year, there are muggy conditions 7% 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 September in Yijing

Humidity Comfort Levels in September in YijingSep1122334455667788991010111112121313141415151616171718181919202021212222232324242525262627272828292930300%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%AugOctSep 11%Sep 11%Sep 300%Sep 300%Sep 110%Sep 110%Sep 210%Sep 210%humidhumidcomfortablecomfortabledrydrymuggymuggy
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 Yijing is gradually increasing during September, increasing from 7.2 miles per hour to 8.2 miles per hour over the course of the month.

For reference, on April 21, the windiest day of the year, the daily average wind speed is 11.6 miles per hour, while on August 19, the calmest day of the year, the daily average wind speed is 7.1 miles per hour.

Average Wind Speed in September in Yijing

Average Wind Speed in September in YijingSep1122334455667788991010111112121313141415151616171718181919202021212222232324242525262627272828292930300 mph0 mph2 mph2 mph4 mph4 mph6 mph6 mph8 mph8 mph10 mph10 mph12 mph12 mph14 mph14 mph16 mph16 mphAugOctSep 17.2 mphSep 17.2 mphSep 308.2 mphSep 308.2 mphSep 117.5 mphSep 117.5 mph
The average of mean hourly wind speeds (dark gray line), with 25th to 75th and 10th to 90th percentile bands.

The wind direction in Yijing during September is predominantly out of the south from September 1 to September 27 and the west from September 27 to September 30.

Wind Direction in September in Yijing

Wind Direction in September in YijingSWSep1122334455667788991010111112121313141415151616171718181919202021212222232324242525262627272828292930300%100%20%80%40%60%60%40%80%20%100%0%AugOctwestsoutheastnorth
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 Yijing typically lasts for 5.1 months (156 days), from around May 1 to around October 4, rarely starting before April 14 or after May 17, and rarely ending before September 18 or after October 20.

The month of September in Yijing is more likely than not fully within the growing season, with the chance that a given day is in the growing season rapidly decreasing from 100% to 61% over the course of the month.

Time Spent in Various Temperature Bands and the Growing Season in September in Yijing

Time Spent in Various Temperature Bands and the Growing Season in September in Yijinggrowing seasonSep1122334455667788991010111112121313141415151616171718181919202021212222232324242525262627272828292930300%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%AugOct100%Sep 1100%Sep 161%Sep 3061%Sep 3098%Sep 1198%Sep 1184%Sep 2184%Sep 21Oct 2010%Oct 2010%freezingvery coldcoldcoolcomfortablewarm
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 Yijing are increasing during September, increasing by 232°F, from 1,982°F to 2,214°F, over the course of the month.

Growing Degree Days in September in Yijing

Growing Degree Days in September in YijingSep1122334455667788991010111112121313141415151616171718181919202021212222232324242525262627272828292930301,800°F1,800°F1,900°F1,900°F2,000°F2,000°F2,100°F2,100°F2,200°F2,200°F2,300°F2,300°F2,400°F2,400°FAugOctSep 11,982°FSep 11,982°FSep 302,214°FSep 302,214°FSep 112,086°FSep 112,086°F
The average growing degree days accumulated over the course of September, 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 Yijing is gradually decreasing during September, falling by 0.9 kWh, from 5.5 kWh to 4.6 kWh, over the course of the month.

Average Daily Incident Shortwave Solar Energy in September in Yijing

Average Daily Incident Shortwave Solar Energy in September in YijingSep1122334455667788991010111112121313141415151616171718181919202021212222232324242525262627272828292930300 kWh0 kWh1 kWh1 kWh2 kWh2 kWh3 kWh3 kWh4 kWh4 kWh5 kWh5 kWh6 kWh6 kWh7 kWh7 kWh8 kWh8 kWhAugOctSep 15.5 kWhSep 15.5 kWhSep 304.6 kWhSep 304.6 kWhSep 115.2 kWhSep 115.2 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 Yijing are 39.064 deg latitude, 112.000 deg longitude, and 4,537 ft elevation.

The topography within 2 miles of Yijing contains significant variations in elevation, with a maximum elevation change of 801 feet and an average elevation above sea level of 4,668 feet. Within 10 miles contains significant variations in elevation (4,022 feet). Within 50 miles also contains extreme variations in elevation (6,594 feet).

The area within 2 miles of Yijing is covered by cropland (60%) and grassland (18%), within 10 miles by cropland (47%) and trees (29%), and within 50 miles by grassland (37%) and cropland (30%).

This report illustrates the typical weather in Yijing, 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, Hohhot Baita International Airport, in our network suitable to be used as a proxy for the historical temperature and dew point records of Yijing.

At a distance of 199 kilometers from Yijing, further than our threshold of 150 kilometers, this station is deemed insufficiently nearby to be relied upon as our primary source for temperature and dew point records. Consequently, the station records are blended with interpolated values from NASA's MERRA-2 satellite-era reanalysis , and both are corrected for elevation differences according to the International Standard Atmosphere .

The weight assigned to the MERRA-2 value depends on the distance from Yijing to the nearest station, increasing from 0% at 150 kilometers to 100% at 200 kilometers. In this case, the MERRA-2 weight is 50%, making the weight assigned to the weather station 50%.

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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