Fall Weather in Dejen EthiopiaDaily high temperatures increase by 5°F, from 69°F to 75°F, rarely falling below 66°F or exceeding 79°F. Daily low temperatures decrease by 5°F, from 54°F to 49°F, rarely falling below 44°F or exceeding 56°F. The highest daily average low temperature is 54°F on September 7. For reference, on March 11, the hottest day of the year, temperatures in Dejen typically range from 56°F to 82°F, while on November 7, the coldest day of the year, they range from 49°F to 73°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. San Cristóbal Amatlán, Mexico (8,840 miles away) and Los Planes, Honduras (8,394 miles) are the far-away foreign places with temperatures most similar to Dejen (view comparison). CloudsThe fall in Dejen experiences very rapidly decreasing cloud cover, with the percentage of time that the sky is overcast or mostly cloudy decreasing from 56% to 38%. The lowest chance of overcast or mostly cloudy conditions is 35% on November 9. The clearest day of the fall is November 9, with clear, mostly clear, or partly cloudy conditions 65% of the time. For reference, on July 27, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 78%, while on November 9, 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 Dejen, the chance of a wet day over the course of the fall is very rapidly decreasing, starting the season at 73% and ending it at 2%. For reference, the year's highest daily chance of a wet day is 91% on July 29, and its lowest chance is 2% on December 10. 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 Dejen is very rapidly decreasing, starting the season at 7.9 inches, when it rarely exceeds 12.9 inches or falls below 2.7 inches, and ending the season at 0.1 inches, when it rarely exceeds 0.5 inches or falls below -0.0 inches. The lowest average 31-day accumulation is 0.1 inches on November 30. SunOver the course of the fall in Dejen, the length of the day is decreasing. From the start to the end of the season, the length of the day decreases by 44 minutes, implying an average daily decrease of 29 seconds, and weekly decrease of 3 minutes, 24 seconds. The shortest day of the fall is November 30, with 11 hours, 35 minutes of daylight and the longest day is September 1, with 12 hours, 18 minutes of daylight. The earliest sunrise of the fall in Dejen is 6:15 AM on October 9 and the latest sunrise is 13 minutes later at 6:28 AM on November 30. The latest sunset is 6:36 PM on September 1 and the earliest sunset is 35 minutes earlier at 6:01 PM on November 16. Daylight saving time is not observed in Dejen during 2024. For reference, on June 20, the longest day of the year, the Sun rises at 6:07 AM and sets 12 hours, 43 minutes later, at 6:50 PM, while on December 21, the shortest day of the year, it rises at 6:39 AM and sets 11 hours, 32 minutes later, at 6:11 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 Dejen is essentially constant during the fall, 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 Dejen is increasing during the fall, increasing from 2.6 miles per hour to 3.7 miles per hour over the course of the season. For reference, on April 25, the windiest day of the year, the daily average wind speed is 4.5 miles per hour, while on September 7, the calmest day of the year, the daily average wind speed is 2.6 miles per hour. The highest daily average wind speed during the fall is 4.4 miles per hour on October 23. The lowest daily average wind speed during the fall is 2.6 miles per hour on September 7. The wind direction in Dejen during the fall is predominantly out of the west from September 1 to September 6 and the east from September 6 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). Temperatures in Dejen are sufficiently warm year round that it is not entirely meaningful to discuss the growing season in these terms. We nevertheless include the chart below as an illustration of the distribution of temperatures experienced throughout the year. 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 Dejen are very rapidly increasing during the fall, increasing by 1,008°F, from 3,805°F to 4,813°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 Dejen is gradually increasing during the fall, rising by 0.6 kWh, from 5.9 kWh to 6.5 kWh, over the course of the season. The highest average daily incident shortwave solar energy during the fall is 7.1 kWh on October 21. TopographyFor the purposes of this report, the geographical coordinates of Dejen are 10.167 deg latitude, 38.133 deg longitude, and 8,045 ft elevation. The topography within 2 miles of Dejen contains large variations in elevation, with a maximum elevation change of 1,969 feet and an average elevation above sea level of 7,688 feet. Within 10 miles contains large variations in elevation (5,036 feet). Within 50 miles also contains extreme variations in elevation (10,531 feet). The area within 2 miles of Dejen is covered by cropland (54%) and grassland (46%), within 10 miles by cropland (60%) and grassland (39%), and within 50 miles by cropland (66%) and grassland (21%). Data SourcesThis report illustrates the typical weather in Dejen, based on a statistical analysis of historical hourly weather reports and model reconstructions from January 1, 1980 to December 31, 2016. Dejen 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 Dejen, 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. |