Spring Weather in Katoro TanzaniaDaily high temperatures are around 84°F, rarely falling below 77°F or exceeding 90°F. The highest daily average high temperature is 86°F on September 23. Daily low temperatures are around 60°F, rarely falling below 56°F or exceeding 64°F. The highest daily average low temperature is 61°F on November 5. For reference, on September 20, the hottest day of the year, temperatures in Katoro typically range from 60°F to 86°F, while on July 15, the coldest day of the year, they range from 56°F to 84°F. The figure below shows you a compact characterization of the hourly average spring 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 José de Cusmapa, Nicaragua (8,194 miles away) and Brasília, Federal District, Brazil (5,492 miles) are the far-away foreign places with temperatures most similar to Katoro (view comparison). CloudsThe spring in Katoro experiences very rapidly increasing cloud cover, with the percentage of time that the sky is overcast or mostly cloudy increasing from 43% to 73%. The clearest day of the spring is September 1, with clear, mostly clear, or partly cloudy conditions 57% of the time. For reference, on January 31, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 77%, while on July 23, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 63%. PrecipitationA wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. In Katoro, the chance of a wet day over the course of the spring is very rapidly increasing, starting the season at 11% and ending it at 65%. For reference, the year's highest daily chance of a wet day is 66% on November 20, and its lowest chance is 2% on July 2. 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 spring in Katoro is very rapidly increasing, starting the season at 0.8 inches, when it rarely exceeds 2.2 inches, and ending the season at 4.7 inches, when it rarely exceeds 7.5 inches or falls below 1.5 inches. The highest average 31-day accumulation is 4.9 inches on November 21. SunOver the course of the spring in Katoro, the length of the day is essentially constant. The shortest day of the spring is September 1, with 12 hours, 3 minutes of daylight and the longest day is November 30, with 12 hours, 17 minutes of daylight. The latest sunrise of the spring in Katoro is 6:50 AM on September 1 and the earliest sunrise is 22 minutes earlier at 6:29 AM on November 7. The latest sunset is 6:53 PM on September 1 and the earliest sunset is 11 minutes earlier at 6:42 PM on October 27. Daylight saving time is not observed in Katoro during 2024. For reference, on December 21, the longest day of the year, the Sun rises at 6:41 AM and sets 12 hours, 18 minutes later, at 6:59 PM, while on June 20, the shortest day of the year, it rises at 6:55 AM and sets 11 hours, 57 minutes later, at 6:52 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 spring 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 Katoro is very rapidly increasing during the spring, rising from 6% to 32% over the course of the season. For reference, on April 7, the muggiest day of the year, there are muggy conditions 41% of the time, while on July 2, the least muggy day of the year, there are muggy conditions 1% 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 Katoro is rapidly decreasing during the spring, decreasing from 6.8 miles per hour to 4.3 miles per hour over the course of the season. For reference, on August 10, the windiest day of the year, the daily average wind speed is 7.1 miles per hour, while on January 19, the calmest day of the year, the daily average wind speed is 3.8 miles per hour. The wind direction in Katoro during the spring is predominantly out of the east from September 1 to November 4 and the north from November 4 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 Katoro 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 Katoro are very rapidly increasing during the spring, increasing by 1,949°F, from 1,202°F to 3,152°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 Katoro is decreasing during the spring, falling by 1.4 kWh, from 6.8 kWh to 5.5 kWh, over the course of the season. The highest average daily incident shortwave solar energy during the spring is 6.8 kWh on September 1. TopographyFor the purposes of this report, the geographical coordinates of Katoro are -3.020 deg latitude, 31.896 deg longitude, and 4,255 ft elevation. The topography within 2 miles of Katoro contains only modest variations in elevation, with a maximum elevation change of 407 feet and an average elevation above sea level of 4,154 feet. Within 10 miles contains only modest variations in elevation (823 feet). Within 50 miles also contains very significant variations in elevation (1,873 feet). The area within 2 miles of Katoro is covered by cropland (54%) and shrubs (43%), within 10 miles by cropland (41%) and trees (29%), and within 50 miles by trees (35%) and cropland (29%). Data SourcesThis report illustrates the typical weather in Katoro, 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, Mwanza Airport, in our network suitable to be used as a proxy for the historical temperature and dew point records of Katoro. At a distance of 132 kilometers from Katoro, 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 Katoro 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. 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