October Weather in Harhiraa MongoliaDaily high temperatures decrease by 17°F, from 53°F to 36°F, rarely falling below 25°F or exceeding 64°F. Daily low temperatures decrease by 14°F, from 32°F to 19°F, rarely falling below 9°F or exceeding 39°F. For reference, on July 12, the hottest day of the year, temperatures in Harhiraa typically range from 54°F to 74°F, while on January 22, the coldest day of the year, they range from -5°F to 13°F. The figure below shows you a compact characterization of the hourly average temperatures for the quarter of the year centered on October. 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. Manning, Canada (4,880 miles away) and Meadow Lake, Canada (5,166 miles) are the far-away foreign places with temperatures most similar to Harhiraa (view comparison). CloudsThe month of October in Harhiraa experiences gradually increasing cloud cover, with the percentage of time that the sky is overcast or mostly cloudy increasing from 40% to 47%. The clearest day of the month is October 1, with clear, mostly clear, or partly cloudy conditions 60% of the time. For reference, on April 12, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 49%, while on August 27, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 65%. PrecipitationA wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. In Harhiraa, the chance of a wet day over the course of October is essentially constant, remaining around 3% throughout. For reference, the year's highest daily chance of a wet day is 26% on July 24, and its lowest chance is 0% on January 17. Over the course of October in Harhiraa, the chance of a day with only rain decreases from 3% to 0%, the chance of a day with mixed snow and rain remains an essentially constant 1% throughout, and the chance of a day with only snow remains an essentially constant 1% throughout. RainfallTo show variation within the month and not just the monthly total, we show the rainfall accumulated over a sliding 31-day period centered around each day. The average sliding 31-day rainfall during October in Harhiraa is essentially constant, remaining about 0.1 inches throughout, and rarely exceeding 0.4 inches or falling below -0.0 inches. SunOver the course of October in Harhiraa, the length of the day is rapidly decreasing. From the start to the end of the month, the length of the day decreases by 1 hour, 47 minutes, implying an average daily decrease of 3 minutes, 34 seconds, and weekly decrease of 24 minutes, 58 seconds. The shortest day of the month is October 31, with 9 hours, 51 minutes of daylight and the longest day is October 1, with 11 hours, 38 minutes of daylight. The earliest sunrise of the month in Harhiraa is 6:52 AM on October 1 and the latest sunrise is 48 minutes later at 7:40 AM on October 31. The latest sunset is 6:30 PM on October 1 and the earliest sunset is 59 minutes earlier at 5:31 PM on October 31. Daylight saving time is not observed in Harhiraa during 2024. For reference, on June 20, the longest day of the year, the Sun rises at 4:43 AM and sets 16 hours, 20 minutes later, at 9:04 PM, while on December 21, the shortest day of the year, it rises at 8:47 AM and sets 8 hours, 6 minutes later, at 4:53 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 October 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 Harhiraa is essentially constant during October, 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 Harhiraa is essentially constant during October, remaining within 0.3 miles per hour of 6.8 miles per hour throughout. For reference, on April 24, the windiest day of the year, the daily average wind speed is 8.5 miles per hour, while on July 21, the calmest day of the year, the daily average wind speed is 5.7 miles per hour. The hourly average wind direction in Harhiraa throughout October is predominantly from the west, with a peak proportion of 63% on October 31. 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 Harhiraa typically lasts for 3.8 months (118 days), from around May 19 to around September 14, rarely starting before May 1 or after June 5, and rarely ending before August 28 or after October 1. The month of October in Harhiraa is very likely fully outside of the growing season, with the chance that a given day is in the growing season gradually decreasing from 10% to 0% over the course of the month. 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 Harhiraa are essentially constant during October, remaining within 8°F of 1,428°F throughout. 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 Harhiraa is decreasing during October, falling by 1.5 kWh, from 3.9 kWh to 2.4 kWh, over the course of the month. TopographyFor the purposes of this report, the geographical coordinates of Harhiraa are 49.778 deg latitude, 91.904 deg longitude, and 4,567 ft elevation. The topography within 2 miles of Harhiraa contains large variations in elevation, with a maximum elevation change of 2,831 feet and an average elevation above sea level of 4,725 feet. Within 10 miles contains large variations in elevation (6,969 feet). Within 50 miles also contains extreme variations in elevation (10,764 feet). The area within 2 miles of Harhiraa is covered by bare soil (100%), within 10 miles by bare soil (85%), and within 50 miles by bare soil (68%) and sparse vegetation (14%). Data SourcesThis report illustrates the typical weather in Harhiraa, based on a statistical analysis of historical hourly weather reports and model reconstructions from January 1, 1980 to December 31, 2016. Harhiraa 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 Harhiraa, 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. 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