Climate and Average Weather Year Round in Altan Xiret China

In Altan Xiret, the summers are warm and partly cloudy and the winters are freezing, dry, windy, and mostly clear. Over the course of the year, the temperature typically varies from 4°F to 86°F and is rarely below -6°F or above 93°F.

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

The hot season lasts for 3.8 months, from May 17 to September 10, with an average daily high temperature above 74°F. The hottest month of the year in Altan Xiret is July, with an average high of 86°F and low of 62°F.

The cold season lasts for 3.1 months, from November 22 to February 26, with an average daily high temperature below 37°F. The coldest month of the year in Altan Xiret is January, with an average low of 4°F and high of 26°F.

In Altan Xiret, 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 Altan Xiret begins around September 15 and lasts for 4.8 months, ending around February 9.

The clearest month of the year in Altan Xiret 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 9 and lasts for 7.2 months, ending around September 15.

The cloudiest month of the year in Altan Xiret is May, during which on average the sky is overcast or mostly cloudy 40% 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 Altan Xiret varies significantly throughout the year.

The wetter season lasts 3.5 months, from June 4 to September 20, with a greater than 15% chance of a given day being a wet day. The month with the most wet days in Altan Xiret is August, with an average of 8.7 days with at least 0.04 inches of precipitation.

The drier season lasts 8.5 months, from September 20 to June 4. The month with the fewest wet days in Altan Xiret 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. The month with the most days of rain alone in Altan Xiret is August, with an average of 8.7 days. Based on this categorization, the most common form of precipitation throughout the year is rain alone, with a peak probability of 31% on August 11.

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. Altan Xiret experiences significant seasonal variation in monthly rainfall.

The rainy period of the year lasts for 5.9 months, from April 23 to October 18, with a sliding 31-day rainfall of at least 0.5 inches. The month with the most rain in Altan Xiret is August, with an average rainfall of 2.8 inches.

The rainless period of the year lasts for 6.1 months, from October 18 to April 23. The month with the least rain in Altan Xiret is January, with an average rainfall of -0.0 inches.

The length of the day in Altan Xiret varies significantly over the course of the year. In 2024, the shortest day is December 21, with 9 hours, 22 minutes of daylight; the longest day is June 21, with 14 hours, 58 minutes of daylight.

The earliest sunrise is at 5:12 AM on June 14, and the latest sunrise is 2 hours, 49 minutes later at 8:01 AM on January 6. The earliest sunset is at 5:16 PM on December 7, and the latest sunset is 2 hours, 56 minutes later at 8:12 PM on June 28.

Daylight saving time (DST) is not observed in Altan Xiret 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.

The perceived humidity level in Altan Xiret, as measured by the percentage of time in which the humidity comfort level is muggy, oppressive, or miserable, does not vary significantly over the course of the year, staying within 1% of 1% throughout.

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 Altan Xiret experiences significant seasonal variation over the course of the year.

The windier part of the year lasts for 3.4 months, from February 26 to June 6, with average wind speeds of more than 10.6 miles per hour. The windiest month of the year in Altan Xiret is April, with an average hourly wind speed of 12.3 miles per hour.

The calmer time of year lasts for 8.7 months, from June 6 to February 26. The calmest month of the year in Altan Xiret is August, with an average hourly wind speed of 8.8 miles per hour.

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

The wind is most often from the south for 4.4 months, from May 26 to October 6, with a peak percentage of 47% on July 27. The wind is most often from the west for 7.6 months, from October 6 to May 26, with a peak percentage of 54% on January 1.

To characterize how pleasant the weather is in Altan Xiret 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 Altan Xiret for general outdoor tourist activities is from mid June to late August, with a peak score in the last week of July.

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 Altan Xiret for hot-weather activities is from early 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 Altan Xiret typically lasts for 5.2 months (159 days), from around April 29 to around October 5, rarely starting before April 13 or after May 15, and rarely ending before September 20 or after October 21.

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 Altan Xiret should appear around April 21, only rarely appearing before April 15 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 3.7 months, from April 13 to August 5, with an average daily incident shortwave energy per square meter above 6.3 kWh. The brightest month of the year in Altan Xiret is June, with an average of 7.1 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 3.5 kWh. The darkest month of the year in Altan Xiret is December, with an average of 2.6 kWh.

For the purposes of this report, the geographical coordinates of Altan Xiret are 39.577 deg latitude, 109.753 deg longitude, and 4,311 ft elevation.

The topography within 2 miles of Altan Xiret contains only modest variations in elevation, with a maximum elevation change of 295 feet and an average elevation above sea level of 4,314 feet. Within 10 miles contains only modest variations in elevation (955 feet). Within 50 miles contains very significant variations in elevation (2,057 feet).

The area within 2 miles of Altan Xiret is covered by grassland (70%) and artificial surfaces (15%), within 10 miles by grassland (76%) and shrubs (11%), and within 50 miles by grassland (69%).