Fall Weather in Uliastay MongoliaDaily high temperatures decrease by 52°F, from 62°F to 10°F, rarely falling below -0°F or exceeding 72°F. Daily low temperatures decrease by 45°F, from 38°F to -8°F, rarely falling below -19°F or exceeding 44°F. For reference, on July 13, the hottest day of the year, temperatures in Uliastay typically range from 50°F to 71°F, while on January 17, the coldest day of the year, they range from -17°F to 2°F. The figure below shows you a compact characterization of the hourly average fall 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. Watson Lake, Yukon, Canada (4,567 miles away) is the far-away foreign place with temperatures most similar to Uliastay (view comparison). CloudsThe fall in Uliastay experiences gradually increasing cloud cover, with the percentage of time that the sky is overcast or mostly cloudy increasing from 35% to 41%. The lowest chance of overcast or mostly cloudy conditions is 33% on September 17. The clearest day of the fall is September 17, with clear, mostly clear, or partly cloudy conditions 67% of the time. For reference, on April 21, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 46%, while on September 17, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 67%. PrecipitationA wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. In Uliastay, the chance of a wet day over the course of the fall is very rapidly decreasing, starting the season at 14% and ending it at 1%. For reference, the year's highest daily chance of a wet day is 28% on July 25, and its lowest chance is 0% on February 22. Over the course of the fall in Uliastay, the chance of a day with only rain decreases from 14% to 0%, the chance of a day with mixed snow and rain remains an essentially constant 0% throughout, and the chance of a day with only snow remains an essentially constant 1% throughout. RainfallTo show variation within the season and not just the monthly totals, we show the rainfall accumulated over a sliding 31-day period centered around each day. The average sliding 31-day rainfall during the fall in Uliastay is decreasing, starting the season at 0.7 inches, when it rarely exceeds 1.4 inches or falls below 0.2 inches, and ending the season at 0.0 inches, when it rarely exceeds -0.0 inches or falls below -0.0 inches. SunOver the course of the fall in Uliastay, the length of the day is very rapidly decreasing. From the start to the end of the season, the length of the day decreases by 4 hours, 38 minutes, implying an average daily decrease of 3 minutes, 5 seconds, and weekly decrease of 21 minutes, 38 seconds. The shortest day of the fall is November 30, with 8 hours, 44 minutes of daylight and the longest day is September 1, with 13 hours, 22 minutes of daylight. The earliest sunrise of the fall in Uliastay is 5:51 AM on September 1 and the latest sunrise is 2 hours, 8 minutes later at 7:59 AM on November 30. The latest sunset is 7:13 PM on September 1 and the earliest sunset is 2 hours, 30 minutes earlier at 4:43 PM on November 30. Daylight saving time is not observed in Uliastay during 2024. For reference, on June 20, the longest day of the year, the Sun rises at 4:34 AM and sets 16 hours, 1 minute later, at 8:34 PM, while on December 21, the shortest day of the year, it rises at 8:18 AM and sets 8 hours, 24 minutes later, at 4:43 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 fall 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 Uliastay is essentially constant during the fall, remaining around 0% throughout. For reference, on June 20, the muggiest day of the year, there are muggy conditions 0% of the time, while on January 1, the least muggy day of the year, there are muggy conditions 0% of the time. 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 Uliastay is gradually decreasing during the fall, decreasing from 7.3 miles per hour to 6.4 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 9.7 miles per hour, while on January 16, the calmest day of the year, the daily average wind speed is 5.9 miles per hour. The highest daily average wind speed during the fall is 7.4 miles per hour on September 13. The wind direction in Uliastay during the fall is predominantly out of the west from September 1 to September 26 and the south from September 26 to November 30. 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 Uliastay typically lasts for 3.0 months (90 days), from around June 3 to around September 2, rarely starting before May 18 or after June 20, and rarely ending before August 16 or after September 17. During the fall in Uliastay, the chance that a given day is within the growing season is very rapidly decreasing falling from 52% to 0% over the course of the 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 Uliastay are gradually increasing during the fall, increasing by 79°F, from 926°F to 1,005°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 Uliastay is very rapidly decreasing during the fall, falling by 3.8 kWh, from 5.6 kWh to 1.8 kWh, over the course of the season. TopographyFor the purposes of this report, the geographical coordinates of Uliastay are 47.742 deg latitude, 96.844 deg longitude, and 5,758 ft elevation. The topography within 2 miles of Uliastay contains very significant variations in elevation, with a maximum elevation change of 1,289 feet and an average elevation above sea level of 5,874 feet. Within 10 miles contains very significant variations in elevation (4,101 feet). Within 50 miles also contains extreme variations in elevation (8,399 feet). The area within 2 miles of Uliastay is covered by bare soil (52%) and sparse vegetation (45%), within 10 miles by sparse vegetation (72%) and bare soil (20%), and within 50 miles by sparse vegetation (43%) and bare soil (42%). Data SourcesThis report illustrates the typical weather in Uliastay, based on a statistical analysis of historical hourly weather reports and model reconstructions from January 1, 1980 to December 31, 2016. Temperature and Dew PointThere is only a single weather station, Tosontsengel, in our network suitable to be used as a proxy for the historical temperature and dew point records of Uliastay. At a distance of 149 kilometers from Uliastay, closer than our threshold of 150 kilometers, this station is deemed sufficiently nearby to be relied upon as our primary source for temperature and dew point records. The station records are corrected for the elevation difference between the station and Uliastay according to the International Standard Atmosphere , and by the relative change present in the MERRA-2 satellite-era reanalysis between the two locations. Please note that the station records themselves may additionally have been back-filled using other nearby stations or the MERRA-2 reanalysis. Other DataAll 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. All other weather data, including cloud cover, precipitation, wind speed and direction, and solar flux, come from NASA's MERRA-2 Modern-Era Retrospective Analysis . 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. 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. |