Climate and Average Weather Year Round in Tsagaan-Olom Mongolia

In Tsagaan-Olom, the summers are comfortable and partly cloudy, the winters are frigid and mostly clear, and it is dry year round. Over the course of the year, the temperature typically varies from -6°F to 78°F and is rarely below -17°F or above 87°F.

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

The warm season lasts for 3.7 months, from May 19 to September 11, with an average daily high temperature above 65°F. The hottest month of the year in Tsagaan-Olom is July, with an average high of 78°F and low of 53°F.

The cold season lasts for 3.3 months, from November 20 to February 29, with an average daily high temperature below 27°F. The coldest month of the year in Tsagaan-Olom is January, with an average low of -5°F and high of 15°F.

In Tsagaan-Olom, 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 Tsagaan-Olom begins around July 28 and lasts for 6.9 months, ending around February 24.

The clearest month of the year in Tsagaan-Olom is January, during which on average the sky is clear, mostly clear, or partly cloudy 72% of the time.

The cloudier part of the year begins around February 24 and lasts for 5.1 months, ending around July 28.

The cloudiest month of the year in Tsagaan-Olom is April, during which on average the sky is overcast or mostly cloudy 38% 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 Tsagaan-Olom varies throughout the year.

The wetter season lasts 3.0 months, from June 4 to September 5, with a greater than 11% chance of a given day being a wet day. The month with the most wet days in Tsagaan-Olom is July, with an average of 6.3 days with at least 0.04 inches of precipitation.

The drier season lasts 9.0 months, from September 5 to June 4. The month with the fewest wet days in Tsagaan-Olom is February, 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 Tsagaan-Olom is July, with an average of 6.3 days. Based on this categorization, the most common form of precipitation throughout the year is rain alone, with a peak probability of 21% on July 3.

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. Tsagaan-Olom experiences some seasonal variation in monthly rainfall.

The rainy period of the year lasts for 3.2 months, from May 30 to September 6, with a sliding 31-day rainfall of at least 0.5 inches. The month with the most rain in Tsagaan-Olom is July, with an average rainfall of 1.3 inches.

The rainless period of the year lasts for 8.8 months, from September 6 to May 30. The month with the least rain in Tsagaan-Olom is December, with an average rainfall of 0.0 inches.

The length of the day in Tsagaan-Olom varies significantly over the course of the year. In 2024, the shortest day is December 21, with 8 hours, 33 minutes of daylight; the longest day is June 21, with 15 hours, 51 minutes of daylight.

The earliest sunrise is at 4:39 AM on June 16, and the latest sunrise is 3 hours, 39 minutes later at 8:18 AM on January 2. The earliest sunset is at 4:45 PM on December 10, and the latest sunset is 3 hours, 46 minutes later at 8:31 PM on June 26.

Daylight saving time (DST) is not observed in Tsagaan-Olom 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 Tsagaan-Olom, 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, remaining a virtually constant 0% 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 Tsagaan-Olom experiences significant seasonal variation over the course of the year.

The windier part of the year lasts for 3.3 months, from March 13 to June 23, with average wind speeds of more than 9.1 miles per hour. The windiest month of the year in Tsagaan-Olom is May, with an average hourly wind speed of 10.8 miles per hour.

The calmer time of year lasts for 8.7 months, from June 23 to March 13. The calmest month of the year in Tsagaan-Olom is January, with an average hourly wind speed of 7.1 miles per hour.

The predominant average hourly wind direction in Tsagaan-Olom varies throughout the year.

The wind is most often from the west for 9.6 months, from February 16 to December 4, with a peak percentage of 44% on May 7. The wind is most often from the south for 2.4 months, from December 4 to February 16, with a peak percentage of 37% on January 1.

To characterize how pleasant the weather is in Tsagaan-Olom 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 Tsagaan-Olom for general outdoor tourist activities is from late June to early August, with a peak score in the third 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 Tsagaan-Olom for hot-weather activities is from early July to early August, with a peak score in the second 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 Tsagaan-Olom typically lasts for 3.7 months (112 days), from around May 20 to around September 9, rarely starting before May 2 or after June 6, and rarely ending before August 25 or after September 25.

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 Tsagaan-Olom should appear around May 11, only rarely appearing before May 3 or after May 20.

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 extreme seasonal variation over the course of the year.

The brighter period of the year lasts for 3.8 months, from April 20 to August 12, with an average daily incident shortwave energy per square meter above 6.5 kWh. The brightest month of the year in Tsagaan-Olom is June, with an average of 7.6 kWh.

The darker period of the year lasts for 3.3 months, from October 31 to February 8, with an average daily incident shortwave energy per square meter below 2.9 kWh. The darkest month of the year in Tsagaan-Olom is December, with an average of 1.8 kWh.

For the purposes of this report, the geographical coordinates of Tsagaan-Olom are 46.713 deg latitude, 96.526 deg longitude, and 5,397 ft elevation.

The topography within 2 miles of Tsagaan-Olom contains only modest variations in elevation, with a maximum elevation change of 456 feet and an average elevation above sea level of 5,454 feet. Within 10 miles contains only modest variations in elevation (2,044 feet). Within 50 miles contains large variations in elevation (7,598 feet).

The area within 2 miles of Tsagaan-Olom is covered by bare soil (100%), within 10 miles by bare soil (100%), and within 50 miles by bare soil (94%).