Winter Weather in Tolbo MongoliaDaily high temperatures are around 15°F, rarely falling below 0°F or exceeding 30°F. The lowest daily average high temperature is 11°F on January 15. Daily low temperatures decrease by 5°F, from -0°F to -5°F, rarely falling below -22°F or exceeding 10°F. The lowest daily average low temperature is -9°F on January 31. For reference, on July 22, the hottest day of the year, temperatures in Tolbo typically range from 45°F to 69°F, while on January 24, the coldest day of the year, they range from -9°F to 12°F. The figure below shows you a compact characterization of the hourly average winter temperatures. The horizontal axis is the day, the vertical axis is the hour of the day, and the color is the average temperature for that hour and day. Healy, Alaska, United States (4,049 miles away) and Haines Junction, Yukon, Canada (4,443 miles) are the far-away foreign places with temperatures most similar to Tolbo (view comparison). CloudsThe winter in Tolbo experiences essentially constant cloud cover, with the percentage of time that the sky is overcast or mostly cloudy remaining about 43% throughout the season. The lowest chance of overcast or mostly cloudy conditions is 41% on January 17. The clearest day of the winter is January 17, with clear, mostly clear, or partly cloudy conditions 59% of the time. For reference, on May 6, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 46%, while on August 26, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 67%. PrecipitationSunOver the course of the winter in Tolbo, the length of the day is very rapidly increasing. From the start to the end of the season, the length of the day increases by 2 hours, 22 minutes, implying an average daily increase of 1 minute, 36 seconds, and weekly increase of 11 minutes, 9 seconds. The shortest day of the winter is December 21, with 8 hours, 19 minutes of daylight and the longest day is February 28, with 10 hours, 59 minutes of daylight. The latest sunrise of the winter in Tolbo is 8:50 AM on January 1 and the earliest sunrise is 1 hour, 8 minutes earlier at 7:42 AM on February 28. The earliest sunset is 5:03 PM on December 11 and the latest sunset is 1 hour, 37 minutes later at 6:41 PM on February 28. Daylight saving time is not observed in Tolbo during 2024. For reference, on June 20, the longest day of the year, the Sun rises at 4:57 AM and sets 16 hours, 7 minutes later, at 9:03 PM, while on December 21, the shortest day of the year, it rises at 8:47 AM and sets 8 hours, 19 minutes later, at 5:06 PM. The figure below presents a compact representation of the sun's elevation (the angle of the sun above the horizon) and azimuth (its compass bearing) for every hour of every day in the reporting period. The horizontal axis is the day of the year and the vertical axis is the hour of the day. For a given day and hour of that day, the background color indicates the azimuth of the sun at that moment. The black isolines are contours of constant solar elevation. MoonThe figure below presents a compact representation of key lunar data for the winter of 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. The label associated with each bar indicates the date and time that the phase is obtained, and the companion time labels indicate the rise and set times of the Moon for the nearest time interval in which the moon is above the horizon. HumidityWe 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 chance that a given day will be muggy in Tolbo is essentially constant during the winter, remaining around 0% throughout. WindThis 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 Tolbo is gradually decreasing during the winter, decreasing from 9.5 miles per hour to 8.8 miles per hour over the course of the season. For reference, on April 28, the windiest day of the year, the daily average wind speed is 10.6 miles per hour, while on July 21, the calmest day of the year, the daily average wind speed is 7.0 miles per hour. The lowest daily average wind speed during the winter is 7.8 miles per hour on January 24. The hourly average wind direction in Tolbo throughout the winter is predominantly from the west, with a peak proportion of 59% on December 1. Growing SeasonDefinitions 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 Tolbo typically lasts for 2.4 months (74 days), from around June 9 to around August 22, rarely starting before May 23 or after June 30, and rarely ending before July 29 or after September 10. The winter in Tolbo is reliably fully outside of the growing season. 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. The average accumulated growing degree days in Tolbo are rapidly decreasing during the winter, decreasing by 749°F, from 749°F to 0°F, over the course of the season. Solar EnergyThis 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 in Tolbo is rapidly increasing during the winter, rising by 2.0 kWh, from 1.7 kWh to 3.7 kWh, over the course of the season. The lowest average daily incident shortwave solar energy during the winter is 1.5 kWh on December 21. TopographyFor the purposes of this report, the geographical coordinates of Tolbo are 48.417 deg latitude, 90.283 deg longitude, and 6,880 ft elevation. The topography within 2 miles of Tolbo contains significant variations in elevation, with a maximum elevation change of 689 feet and an average elevation above sea level of 6,932 feet. Within 10 miles contains significant variations in elevation (4,718 feet). Within 50 miles also contains extreme variations in elevation (9,698 feet). The area within 2 miles of Tolbo is covered by bare soil (97%), within 10 miles by bare soil (86%), and within 50 miles by bare soil (78%). Data SourcesThis report illustrates the typical weather in Tolbo, based on a statistical analysis of historical hourly weather reports and model reconstructions from January 1, 1980 to December 31, 2016. Tolbo 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 Tolbo, 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 Algorithms 2nd Edition , 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 airports and weather stations are provided by AskGeo.com . Maps are © OpenStreetMap contributors. DisclaimerThe 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. Please review our full terms contained on our Terms of Service page. |