Climate and Average Weather Year Round in Beisijia China

In Beisijia, the summers are long, warm, and partly cloudy and the winters are freezing, snowy, windy, and mostly clear. Over the course of the year, the temperature typically varies from 2°F to 87°F and is rarely below -8°F or above 95°F.

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

The hot season lasts for 4.2 months, from May 12 to September 18, with an average daily high temperature above 73°F. The hottest month of the year in Beisijia is July, with an average high of 86°F and low of 65°F.

The cold season lasts for 3.0 months, from November 23 to February 25, with an average daily high temperature below 33°F. The coldest month of the year in Beisijia is January, with an average low of 2°F and high of 21°F.

In Beisijia, the average percentage of the sky covered by clouds experiences significant seasonal variation over the course of the year.

The clearer part of the year in Beisijia begins around August 28 and lasts for 6.7 months, ending around March 18.

The clearest month of the year in Beisijia is January, during which on average the sky is clear, mostly clear, or partly cloudy 78% of the time.

The cloudier part of the year begins around March 18 and lasts for 5.3 months, ending around August 28.

The cloudiest month of the year in Beisijia is June, during which on average the sky is overcast or mostly cloudy 43% 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 Beisijia varies significantly throughout the year.

The wetter season lasts 3.4 months, from May 22 to September 2, with a greater than 17% chance of a given day being a wet day. The month with the most wet days in Beisijia is July, with an average of 10.0 days with at least 0.04 inches of precipitation.

The drier season lasts 8.6 months, from September 2 to May 22. The month with the fewest wet days in Beisijia is January, with an average of 0.1 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 Beisijia changes throughout the year.

Rain alone is the most common for 7.6 months, from March 22 to November 8. The month with the most days of rain alone in Beisijia is July, with an average of 10.0 days.

Snow alone is the most common for 4.4 months, from November 8 to March 22. The month with the most days of snow alone in Beisijia is November, 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. Beisijia experiences significant seasonal variation in monthly rainfall.

The rainy period of the year lasts for 6.2 months, from April 12 to October 17, with a sliding 31-day rainfall of at least 0.5 inches. The month with the most rain in Beisijia is July, with an average rainfall of 3.8 inches.

The rainless period of the year lasts for 5.8 months, from October 17 to April 12. The month with the least rain in Beisijia is December, 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. Beisijia experiences some seasonal variation in monthly snowfall.

The snowy period of the year lasts for 1.9 weeks, from March 15 to March 29, with a sliding 31-day snowfall of at least 1.0 inches. The month with the most snow in Beisijia is March, with an average snowfall of 1.0 inches.

The snowless period of the year lasts for 12 months, from March 29 to March 15. The least snow falls around July 17, with an average total accumulation of 0.0 inches.

The length of the day in Beisijia varies significantly over the course of the year. In 2024, the shortest day is December 21, with 9 hours, 6 minutes of daylight; the longest day is June 21, with 15 hours, 16 minutes of daylight.

The earliest sunrise is at 4:20 AM on June 15, and the latest sunrise is 3 hours, 5 minutes later at 7:25 AM on January 4. The earliest sunset is at 4:25 PM on December 8, and the latest sunset is 3 hours, 12 minutes later at 7:37 PM on June 27.

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

Beisijia experiences significant seasonal variation in the perceived humidity.

The muggier period of the year lasts for 1.7 months, from July 1 to August 24, during which time the comfort level is muggy, oppressive, or miserable at least 9% of the time. The month with the most muggy days in Beisijia is July, with 7.6 days that are muggy or worse.

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

The windier part of the year lasts for 7.8 months, from October 9 to June 3, with average wind speeds of more than 11.0 miles per hour. The windiest month of the year in Beisijia is April, with an average hourly wind speed of 13.5 miles per hour.

The calmer time of year lasts for 4.2 months, from June 3 to October 9. The calmest month of the year in Beisijia is August, with an average hourly wind speed of 8.5 miles per hour.

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

The wind is most often from the south for 3.0 months, from May 22 to August 22, with a peak percentage of 49% on July 7. The wind is most often from the north for 9.0 months, from August 22 to May 22, with a peak percentage of 58% on January 1.

To characterize how pleasant the weather is in Beisijia 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 Beisijia for general outdoor tourist activities is from mid June to late August, with a peak score in the second 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 Beisijia 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 Beisijia typically lasts for 5.4 months (165 days), from around April 26 to around October 8, rarely starting before April 11 or after May 10, and rarely ending before September 23 or after October 23.

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 Beisijia should appear around April 21, only rarely appearing before April 13 or after April 30.

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 3.6 months, from April 13 to August 2, with an average daily incident shortwave energy per square meter above 6.0 kWh. The brightest month of the year in Beisijia is May, with an average of 6.7 kWh.

The darker period of the year lasts for 3.0 months, from November 2 to February 3, with an average daily incident shortwave energy per square meter below 3.1 kWh. The darkest month of the year in Beisijia is December, with an average of 2.2 kWh.

For the purposes of this report, the geographical coordinates of Beisijia are 42.146 deg latitude, 120.679 deg longitude, and 1,299 ft elevation.

The topography within 2 miles of Beisijia contains significant variations in elevation, with a maximum elevation change of 774 feet and an average elevation above sea level of 1,445 feet. Within 10 miles contains significant variations in elevation (2,497 feet). Within 50 miles contains large variations in elevation (3,865 feet).

The area within 2 miles of Beisijia is covered by cropland (51%), grassland (24%), and trees (17%), within 10 miles by cropland (46%) and grassland (26%), and within 50 miles by cropland (48%) and grassland (29%).