Climate and Average Weather Year Round in Jinjiadian China

In Jinjiadian, the summers are long, warm, and wet; the winters are frigid and snowy; and it is partly cloudy year round. Over the course of the year, the temperature typically varies from -5°F to 80°F and is rarely below -16°F or above 88°F.

Based on the tourism score, the best time of year to visit Jinjiadian for warm-weather activities is from late June to late August.

The warm season lasts for 4.1 months, from May 14 to September 18, with an average daily high temperature above 67°F. The hottest month of the year in Jinjiadian is July, with an average high of 79°F and low of 61°F.

The cold season lasts for 3.0 months, from November 26 to February 28, with an average daily high temperature below 27°F. The coldest month of the year in Jinjiadian is January, with an average low of -4°F and high of 14°F.

In Jinjiadian, 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 Jinjiadian begins around August 20 and lasts for 2.9 months, ending around November 17.

The clearest month of the year in Jinjiadian is October, during which on average the sky is clear, mostly clear, or partly cloudy 64% of the time.

The cloudier part of the year begins around November 17 and lasts for 9.1 months, ending around August 20.

The cloudiest month of the year in Jinjiadian is January, during which on average the sky is overcast or mostly cloudy 50% 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 Jinjiadian varies significantly throughout the year.

The wetter season lasts 4.5 months, from April 26 to September 11, with a greater than 26% chance of a given day being a wet day. The month with the most wet days in Jinjiadian is July, with an average of 15.3 days with at least 0.04 inches of precipitation.

The drier season lasts 7.5 months, from September 11 to April 26. The month with the fewest wet days in Jinjiadian is January, with an average of 0.6 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 Jinjiadian changes throughout the year.

Rain alone is the most common for 7.7 months, from March 23 to November 13. The month with the most days of rain alone in Jinjiadian is July, with an average of 15.3 days.

Snow alone is the most common for 4.0 months, from November 13 to March 15. The month with the most days of snow alone in Jinjiadian is November, with an average of 1.5 days.

Mixed snow and rain is the most common for 1.1 weeks, from March 15 to March 23. The month with the most days of mixed snow and rain in Jinjiadian is November, with an average of 0.8 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. Jinjiadian experiences extreme seasonal variation in monthly rainfall.

The rainy period of the year lasts for 7.3 months, from March 29 to November 6, with a sliding 31-day rainfall of at least 0.5 inches. The month with the most rain in Jinjiadian is July, with an average rainfall of 6.1 inches.

The rainless period of the year lasts for 4.7 months, from November 6 to March 29. The month with the least rain in Jinjiadian 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. Jinjiadian experiences some seasonal variation in monthly snowfall.

The snowy period of the year lasts for 5.7 months, from October 19 to April 9, with a sliding 31-day snowfall of at least 1.0 inches. The month with the most snow in Jinjiadian is November, with an average snowfall of 2.8 inches.

The snowless period of the year lasts for 6.3 months, from April 9 to October 19. The least snow falls around July 20, with an average total accumulation of 0.0 inches.

The length of the day in Jinjiadian varies significantly over the course of the year. In 2024, the shortest day is December 21, with 9 hours, 5 minutes of daylight; the longest day is June 21, with 15 hours, 17 minutes of daylight.

The earliest sunrise is at 3:55 AM on June 15, and the latest sunrise is 3 hours, 7 minutes later at 7:01 AM on January 4. The earliest sunset is at 3:59 PM on December 8, and the latest sunset is 3 hours, 14 minutes later at 7:13 PM on June 27.

Daylight saving time (DST) is not observed in Jinjiadian 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.

Jinjiadian experiences significant seasonal variation in the perceived humidity.

The muggier period of the year lasts for 1.7 months, from July 3 to August 26, during which time the comfort level is muggy, oppressive, or miserable at least 11% of the time. The month with the most muggy days in Jinjiadian is July, with 8.8 days that are muggy or worse.

The least muggy day of the year is March 14, 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 Jinjiadian experiences significant seasonal variation over the course of the year.

The windier part of the year lasts for 7.0 months, from October 23 to May 22, with average wind speeds of more than 5.8 miles per hour. The windiest month of the year in Jinjiadian is March, with an average hourly wind speed of 7.6 miles per hour.

The calmer time of year lasts for 5.0 months, from May 22 to October 23. The calmest month of the year in Jinjiadian is August, with an average hourly wind speed of 4.0 miles per hour.

The predominant average hourly wind direction in Jinjiadian varies throughout the year.

The wind is most often from the south for 4.6 months, from May 20 to October 8, with a peak percentage of 46% on July 27. The wind is most often from the west for 7.4 months, from October 8 to May 20, with a peak percentage of 45% on January 1.

To characterize how pleasant the weather is in Jinjiadian 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 Jinjiadian for general outdoor tourist activities is from late June to late August, with a peak score in the first 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 Jinjiadian for hot-weather activities is from mid July to early 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 Jinjiadian typically lasts for 4.8 months (148 days), from around May 4 to around September 29, rarely starting before April 19 or after May 19, and rarely ending before September 13 or after October 15.

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 Jinjiadian should appear around May 5, only rarely appearing before April 26 or after May 16.

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 17 to August 13, with an average daily incident shortwave energy per square meter above 5.4 kWh. The brightest month of the year in Jinjiadian is June, with an average of 6.2 kWh.

The darker period of the year lasts for 3.0 months, from November 3 to February 4, with an average daily incident shortwave energy per square meter below 2.7 kWh. The darkest month of the year in Jinjiadian is December, with an average of 1.8 kWh.

For the purposes of this report, the geographical coordinates of Jinjiadian are 42.344 deg latitude, 126.889 deg longitude, and 1,969 ft elevation.

The topography within 2 miles of Jinjiadian contains significant variations in elevation, with a maximum elevation change of 663 feet and an average elevation above sea level of 2,029 feet. Within 10 miles contains significant variations in elevation (2,395 feet). Within 50 miles contains large variations in elevation (4,298 feet).

The area within 2 miles of Jinjiadian is covered by trees (95%), within 10 miles by trees (88%), and within 50 miles by trees (85%) and cropland (10%).