Climate and Average Weather Year Round in Shang’an China

In Shang’an, the summers are long, warm, humid, and partly cloudy and the winters are freezing, snowy, and mostly clear. Over the course of the year, the temperature typically varies from 16°F to 88°F and is rarely below 9°F or above 97°F.

Based on the tourism score, the best time of year to visit Shang’an for warm-weather activities is from mid May to mid September.

The hot season lasts for 4.1 months, from May 12 to September 15, with an average daily high temperature above 78°F. The hottest month of the year in Shang’an is July, with an average high of 87°F and low of 70°F.

The cold season lasts for 3.0 months, from November 23 to February 24, with an average daily high temperature below 47°F. The coldest month of the year in Shang’an is January, with an average low of 17°F and high of 38°F.

In Shang’an, the average percentage of the sky covered by clouds experiences mild seasonal variation over the course of the year.

The clearer part of the year in Shang’an begins around October 8 and lasts for 4.1 months, ending around February 11.

The clearest month of the year in Shang’an is December, during which on average the sky is clear, mostly clear, or partly cloudy 76% of the time.

The cloudier part of the year begins around February 11 and lasts for 7.9 months, ending around October 8.

The cloudiest month of the year in Shang’an is June, during which on average the sky is overcast or mostly cloudy 41% of the time.

A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. The chance of wet days in Shang’an varies significantly throughout the year.

The wetter season lasts 3.3 months, from June 7 to September 17, with a greater than 19% chance of a given day being a wet day. The month with the most wet days in Shang’an is July, with an average of 10.7 days with at least 0.04 inches of precipitation.

The drier season lasts 8.7 months, from September 17 to June 7. The month with the fewest wet days in Shang’an is January, with an average of 0.4 days with at least 0.04 inches of precipitation.

Among wet days, we distinguish between those that experience rain alone, snow alone, or a mixture of the two. Based on this categorization, the most common form of precipitation in Shang’an changes throughout the year.

Rain alone is the most common for 9.5 months, from February 14 to November 30. The month with the most days of rain alone in Shang’an is July, with an average of 10.7 days.

Snow alone is the most common for 2.5 months, from November 30 to February 14. The month with the most days of snow alone in Shang’an is February, with an average of 0.4 days.

Rainfall

To show variation within the months and not just the monthly totals, we show the rainfall accumulated over a sliding 31-day period centered around each day of the year. Shang’an experiences extreme seasonal variation in monthly rainfall.

The rainy period of the year lasts for 6.8 months, from April 2 to October 29, with a sliding 31-day rainfall of at least 0.5 inches. The month with the most rain in Shang’an is July, with an average rainfall of 4.3 inches.

The rainless period of the year lasts for 5.1 months, from October 29 to April 2. The month with the least rain in Shang’an is January, with an average rainfall of 0.0 inches.

Snowfall

As with rainfall, we consider the snowfall accumulated over a sliding 31-day period centered around each day of the year. Shang’an experiences some seasonal variation in monthly snowfall.

The snowy period of the year lasts for 3.3 weeks, from November 3 to November 26, with a sliding 31-day snowfall of at least 1.0 inches. The month with the most snow in Shang’an is November, with an average snowfall of 1.2 inches.

The snowless period of the year lasts for 11 months, from November 26 to November 3. The least snow falls around July 24, with an average total accumulation of 0.0 inches.

The length of the day in Shang’an varies significantly over the course of the year. In 2024, the shortest day is December 21, with 9 hours, 31 minutes of daylight; the longest day is June 21, with 14 hours, 49 minutes of daylight.

The earliest sunrise is at 4:59 AM on June 13, and the latest sunrise is 2 hours, 40 minutes later at 7:39 AM on January 7. The earliest sunset is at 5:03 PM on December 7, and the latest sunset is 2 hours, 47 minutes later at 7:50 PM on June 28.

Daylight saving time (DST) is not observed in Shang’an during 2024.

The figure below presents a compact representation of key lunar data for 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.

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.

Shang’an experiences extreme seasonal variation in the perceived humidity.

The muggier period of the year lasts for 2.7 months, from June 17 to September 8, during which time the comfort level is muggy, oppressive, or miserable at least 20% of the time. The month with the most muggy days in Shang’an is July, with 20.5 days that are muggy or worse.

The least muggy day of the year is February 17, when muggy conditions are essentially unheard of.

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 Shang’an experiences significant seasonal variation over the course of the year.

The windier part of the year lasts for 3.2 months, from March 1 to June 8, with average wind speeds of more than 7.0 miles per hour. The windiest month of the year in Shang’an is April, with an average hourly wind speed of 8.4 miles per hour.

The calmer time of year lasts for 8.8 months, from June 8 to March 1. The calmest month of the year in Shang’an is August, with an average hourly wind speed of 5.4 miles per hour.

The predominant average hourly wind direction in Shang’an varies throughout the year.

The wind is most often from the south for 3.4 weeks, from June 2 to June 26, with a peak percentage of 31% on June 24. The wind is most often from the east for 2.3 months, from June 26 to September 4, with a peak percentage of 37% on July 25. The wind is most often from the west for 8.9 months, from September 4 to June 2, with a peak percentage of 45% on January 1.

To characterize how pleasant the weather is in Shang’an throughout the year, we compute two travel scores.

The tourism score favors clear, rainless days with perceived temperatures between 65°F and 80°F. Based on this score, the best time of year to visit Shang’an for general outdoor tourist activities is from mid May to mid September, with a peak score in the last week of August.

The beach/pool score favors clear, rainless days with perceived temperatures between 75°F and 90°F. Based on this score, the best time of year to visit Shang’an for hot-weather activities is from late June to mid August, with a peak score in the last week of July.

Methodology

For each hour between 8:00 AM and 9:00 PM of each day in the analysis period (1980 to 2016), independent scores are computed for perceived temperature, cloud cover, and total precipitation. Those scores are combined into a single hourly composite score, which is then aggregated into days, averaged over all the years in the analysis period, and smoothed.

Our cloud cover score is 10 for fully clear skies, falling linearly to 9 for mostly clear skies, and to 1 for fully overcast skies.

Our precipitation score, which is based on the three-hour precipitation centered on the hour in question, is 10 for no precipitation, falling linearly to 9 for trace precipitation, and to 0 for 0.04 inches of precipitation or more.

Our tourism temperature score is 0 for perceived temperatures below 50°F, rising linearly to 9 for 65°F, to 10 for 75°F, falling linearly to 9 for 80°F, and to 1 for 90°F or hotter.

Our beach/pool temperature score is 0 for perceived temperatures below 65°F, rising linearly to 9 for 75°F, to 10 for 82°F, falling linearly to 9 for 90°F, and to 1 for 100°F or hotter.

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 Shang’an typically lasts for 7.2 months (222 days), from around March 27 to around November 3, rarely starting before March 11 or after April 12, and rarely ending before October 19 or after November 19.

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.

Based on growing degree days alone, the first spring blooms in Shang’an should appear around April 1, only rarely appearing before March 24 or after April 10.

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 experiences significant seasonal variation over the course of the year.

The brighter period of the year lasts for 3.9 months, from April 9 to August 5, with an average daily incident shortwave energy per square meter above 5.9 kWh. The brightest month of the year in Shang’an is May, with an average of 6.6 kWh.

The darker period of the year lasts for 3.1 months, from November 2 to February 6, with an average daily incident shortwave energy per square meter below 3.3 kWh. The darkest month of the year in Shang’an is December, with an average of 2.5 kWh.

For the purposes of this report, the geographical coordinates of Shang’an are 38.063 deg latitude, 114.208 deg longitude, and 879 ft elevation.

The topography within 2 miles of Shang’an contains very significant variations in elevation, with a maximum elevation change of 1,194 feet and an average elevation above sea level of 967 feet. Within 10 miles contains very significant variations in elevation (2,969 feet). Within 50 miles contains large variations in elevation (6,250 feet).

The area within 2 miles of Shang’an is covered by cropland (54%), grassland (31%), and artificial surfaces (12%), within 10 miles by cropland (53%) and grassland (17%), and within 50 miles by cropland (45%) and trees (24%).