April Weather in Halban MongoliaDaily high temperatures increase by 17°F, from 32°F to 48°F, rarely falling below 18°F or exceeding 61°F. Daily low temperatures increase by 19°F, from 7°F to 25°F, rarely falling below -8°F or exceeding 33°F. For reference, on July 13, the hottest day of the year, temperatures in Halban typically range from 47°F to 68°F, while on January 19, the coldest day of the year, they range from -24°F to -5°F. The figure below shows you a compact characterization of the hourly average temperatures for the quarter of the year centered on April. 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. Dawson City, Canada (4,011 miles away) is the far-away foreign place with temperatures most similar to Halban (view comparison). CloudsThe month of April in Halban experiences essentially constant cloud cover, with the percentage of time that the sky is overcast or mostly cloudy remaining about 48% throughout the month. The highest chance of overcast or mostly cloudy conditions is 49% on April 22. The clearest day of the month is April 6, with clear, mostly clear, or partly cloudy conditions 54% of the time. For reference, on November 30, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 50%, while on September 19, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 61%. PrecipitationA wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. In Halban, the chance of a wet day over the course of April is gradually increasing, starting the month at 2% and ending it at 5%. For reference, the year's highest daily chance of a wet day is 31% on July 27, and its lowest chance is 0% on February 27. Over the course of April in Halban, the chance of a day with only rain increases from 1% to 3%, 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 April in Halban 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 April in Halban, the length of the day is rapidly increasing. From the start to the end of the month, the length of the day increases by 1 hour, 42 minutes, implying an average daily increase of 3 minutes, 31 seconds, and weekly increase of 24 minutes, 38 seconds. The shortest day of the month is April 1, with 12 hours, 55 minutes of daylight and the longest day is April 30, with 14 hours, 37 minutes of daylight. The latest sunrise of the month in Halban is 7:05 AM on April 1 and the earliest sunrise is 58 minutes earlier at 6:08 AM on April 30. The earliest sunset is 8:00 PM on April 1 and the latest sunset is 44 minutes later at 8:45 PM on April 30. Daylight saving time is not observed in Halban during 2024. For reference, on June 20, the longest day of the year, the Sun rises at 5:21 AM and sets 16 hours, 18 minutes later, at 9:39 PM, while on December 21, the shortest day of the year, it rises at 9:22 AM and sets 8 hours, 9 minutes later, at 5:31 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 April 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 Halban is essentially constant during April, remaining around 0% throughout. For reference, on July 17, 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 Halban is increasing during April, increasing from 9.4 miles per hour to 10.5 miles per hour over the course of the month. For reference, on April 23, the windiest day of the year, the daily average wind speed is 10.5 miles per hour, while on January 24, the calmest day of the year, the daily average wind speed is 6.7 miles per hour. The highest daily average wind speed during April is 10.5 miles per hour on April 23. The hourly average wind direction in Halban throughout April is predominantly from the west, with a peak proportion of 57% on April 16. 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 Halban typically lasts for 2.5 months (78 days), from around June 9 to around August 26, rarely starting before May 20 or after June 30, and rarely ending before August 7 or after September 11. The month of April in Halban 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 Halban are essentially constant during April, remaining within 5°F of 6°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 Halban is increasing during April, rising by 1.2 kWh, from 5.1 kWh to 6.3 kWh, over the course of the month. TopographyFor the purposes of this report, the geographical coordinates of Halban are 49.529 deg latitude, 97.741 deg longitude, and 5,748 ft elevation. The topography within 2 miles of Halban contains significant variations in elevation, with a maximum elevation change of 571 feet and an average elevation above sea level of 5,807 feet. Within 10 miles contains significant variations in elevation (2,694 feet). Within 50 miles contains large variations in elevation (5,079 feet). The area within 2 miles of Halban is covered by sparse vegetation (95%), within 10 miles by sparse vegetation (59%) and grassland (25%), and within 50 miles by sparse vegetation (38%) and grassland (31%). Data SourcesThis report illustrates the typical weather in Halban, 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 Halban. At a distance of 95 kilometers from Halban, 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 Halban 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. |