Average Weather in Ongi Mongolia
In Ongi, the summers are comfortable; the winters are frigid, dry, and windy; and it is partly cloudy year round. Over the course of the year, the temperature typically varies from -9°F to 71°F and is rarely below -20°F or above 81°F.
Based on the tourism score, the best time of year to visit Ongi for warm-weather activities is from early July to early August.
The warm season lasts for 3.6 months, from May 21 to September 10, with an average daily high temperature above 60°F. The hottest day of the year is July 15, with an average high of 71°F and low of 47°F.
The cold season lasts for 3.5 months, from November 20 to March 6, with an average daily high temperature below 24°F. The coldest day of the year is January 19, with an average low of -9°F and high of 12°F.
Average High and Low Temperature
The figure below shows you a compact characterization of the entire year of hourly average temperatures. The horizontal axis is the day of the year, the vertical axis is the hour of the day, and the color is the average temperature for that hour and day.
Average Hourly Temperature
frigid 15°F freezing 32°F very cold 45°F cold 55°F cool 65°F comfortable 75°F warm 85°F hot 95°F sweltering
In Ongi, 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 Ongi begins around July 29 and lasts for 6.9 months, ending around February 24. On January 17, the clearest day of the year, the sky is clear, mostly clear, or partly cloudy 67% of the time, and overcast or mostly cloudy 33% of the time.
The cloudier part of the year begins around February 24 and lasts for 5.2 months, ending around July 29. On April 24, the cloudiest day of the year, the sky is overcast or mostly cloudy 50% of the time, and clear, mostly clear, or partly cloudy 50% of the time.
Cloud Cover Categories
0% clear 20% mostly clear 40% partly cloudy 60% mostly cloudy 80% overcast 100%
A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. The chance of wet days in Ongi varies significantly throughout the year.
The wetter season lasts 2.9 months, from June 7 to September 3, with a greater than 18% chance of a given day being a wet day. The chance of a wet day peaks at 35% on July 21.
The drier season lasts 9.1 months, from September 3 to June 7. The smallest chance of a wet day is 0% on December 20.
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 Ongi changes throughout the year.
Snow alone is the most common for 6.3 months, from October 13 to April 24. The highest chance of a day with snow alone is 2% on April 24.
Rain alone is the most common for 5.4 months, from April 24 to October 4. The highest chance of a day with rain alone is 35% on July 21.
Mixed snow and rain is the most common for 1.3 weeks, from October 4 to October 13. The highest chance of a day with mixed snow and rain is 3% on May 3.
Daily Chance of Precipitation
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. Ongi experiences significant seasonal variation in monthly rainfall.
The rainy period of the year lasts for 3.9 months, from May 20 to September 17, with a sliding 31-day rainfall of at least 0.5 inches. The most rain falls during the 31 days centered around July 19, with an average total accumulation of 2.3 inches.
The rainless period of the year lasts for 8.1 months, from September 17 to May 20. The least rain falls around January 2, with an average total accumulation of 0.0 inches.
Average Monthly Rainfall
The sliding 31-day liquid-equivalent quantity of snowfall in Ongi does not vary significantly over the course of the year, staying within 0.1 inches of 0.1 inches throughout.
Average Liquid-Equivalent Monthly Snowfall
The length of the day in Ongi varies significantly over the course of the year. In 2018, the shortest day is December 22, with 8 hours, 35 minutes of daylight; the longest day is June 21, with 15 hours, 49 minutes of daylight.
Hours of Daylight and Twilight
The earliest sunrise is at 5:17 AM on June 16, and the latest sunrise is 3 hours, 37 minutes later at 8:54 AM on January 1. The earliest sunset is at 5:23 PM on December 11, and the latest sunset is 3 hours, 44 minutes later at 9:07 PM on June 26.
Daylight saving time (DST) is not observed in Ongi during 2018.
Sunrise & Sunset with Twilight
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 Ongi, 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.
Humidity Comfort Levels
dry 55°F comfortable 60°F humid 65°F muggy 70°F oppressive 75°F miserable
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 Ongi experiences significant seasonal variation over the course of the year.
The windier part of the year lasts for 3.5 months, from February 19 to June 4, with average wind speeds of more than 9.8 miles per hour. The windiest day of the year is April 19, with an average hourly wind speed of 12.0 miles per hour.
The calmer time of year lasts for 8.5 months, from June 4 to February 19. The calmest day of the year is July 18, with an average hourly wind speed of 7.6 miles per hour.
Average Wind Speed
The predominant average hourly wind direction in Ongi varies throughout the year.
The wind is most often from the north for 4.1 weeks, from January 8 to February 6 and for 4.7 months, from March 7 to July 28, with a peak percentage of 49% on January 23. The wind is most often from the west for 1.0 months, from February 6 to March 7 and for 5.4 months, from July 28 to January 8, with a peak percentage of 46% on February 9.
Best Time of Year to Visit
To characterize how pleasant the weather is in Ongi 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 Ongi for general outdoor tourist activities is from early July 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 Ongi for hot-weather activities is from early July to early August, with a peak score in the second week of July.
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 Ongi typically lasts for 2.8 months (84 days), from around June 9 to around September 1, rarely starting before May 23 or after June 26, and rarely ending before August 16 or after September 17.
Time Spent in Various Temperature Bands and the Growing Season
frigid 15°F freezing 32°F very cold 45°F cold 55°F cool 65°F comfortable 75°F warm 85°F hot 95°F sweltering
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 Ongi should appear around May 26, only rarely appearing before May 19 or after June 3.
Growing Degree Days
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 3.7 months, from April 22 to August 13, with an average daily incident shortwave energy per square meter above 6.1 kWh. The brightest day of the year is June 3, with an average of 7.2 kWh.
The darker period of the year lasts for 3.1 months, from November 3 to February 6, with an average daily incident shortwave energy per square meter below 2.8 kWh. The darkest day of the year is December 22, with an average of 1.7 kWh.
Average Daily Incident Shortwave Solar Energy
For the purposes of this report, the geographical coordinates of Ongi are 46.467 deg latitude, 102.283 deg longitude, and 6,677 ft elevation.
The topography within 2 miles of Ongi contains significant variations in elevation, with a maximum elevation change of 797 feet and an average elevation above sea level of 6,641 feet. Within 10 miles contains significant variations in elevation (2,425 feet). Within 50 miles contains large variations in elevation (6,299 feet).
The area within 2 miles of Ongi is covered by sparse vegetation (83%) and bare soil (16%), within 10 miles by sparse vegetation (57%) and bare soil (34%), and within 50 miles by sparse vegetation (41%) and bare soil (39%).
This report illustrates the typical weather in Ongi, based on a statistical analysis of historical hourly weather reports and model reconstructions from January 1, 1980 to December 31, 2016.
Ongi is further than 200 kilometers from the nearest reliable weather station, so the weather-related data on this page were taken entirely from NASA's MERRA-2 satellite-era reanalysis . This reanalysis combines a variety of wide-area measurements in a state-of-the-art global meteorological model to reconstruct the hourly history of weather throughout the world on a 50-kilometer grid.
The temperature and dew point estimates are corrected for the difference between the reference elevation of the MERRA-2 grid cell and the elevation of Ongi, according to the International Standard Atmosphere .
All data relating to the Sun's position (e.g., sunrise and sunset) are computed using astronomical formulas from the book, Astronomical Tables of the Sun, Moon and Planets , by Jean Meeus.
Land Use data comes from the Global Land Cover SHARE database , published by the Food and Agriculture Organization of the United Nations.
Elevation data comes from the Shuttle Radar Topography Mission (SRTM) , published by NASA's Jet Propulsion Laboratory.
Names, locations, and time zones of places and some airports come from the GeoNames Geographical Database .
Time zones for aiports and weather stations are provided by AskGeo.com .
Maps are © Esri, with data from National Geographic, Esri, DeLorme, NAVTEQ, UNEP-WCMC, USGS, NASA, ESA, METI, NRCAN, GEBCO, NOAA, and iPC.
The information on this site is provided as is, without any assurances as to its accuracy or suitability for any purpose. Weather data is prone to errors, outages, and other defects. We assume no responsibility for any decisions made on the basis of the content presented on this site.
We draw particular cautious attention to our reliance on the MERRA-2 model-based reconstructions for a number of important data series. While having the tremendous advantages of temporal and spatial completeness, these reconstructions: (1) are based on computer models that may have model-based errors, (2) are coarsely sampled on a 50 km grid and are therefore unable to reconstruct the local variations of many microclimates, and (3) have particular difficulty with the weather in some coastal areas, especially small islands.
We further caution that our travel scores are only as good as the data that underpin them, that weather conditions at any given location and time are unpredictable and variable, and that the definition of the scores reflects a particular set of preferences that may not agree with those of any particular reader.