MERRA-2 Modern-Era Retrospective Analysis. This 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. The average accumulated growing degree days in Scottsdale are gradually increasing during December, increasing by 173°F, from 7,783°F to 7,956°F, over the course of the month. The black line is the percentage chance that a given day is within the growing season. Daily high temperatures decrease by 4°F, from 69°F to 65°F, rarely falling below 56°F or exceeding 77°F. Averages are for Scottsdale Airport, which is 8 miles from Scottsdale. At the beginning of the month the temperatures are pleasant. 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 . Pressure: 29.89 "Hg. The clearest day of the month is December 2, with clear, mostly clear, or partly cloudy conditions 68% of the time. Need some sunshine and outdoor time. To 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 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. 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. Daily low temperatures decrease by 3°F, from 47°F to 44°F, rarely falling below 36°F or exceeding 54°F. We remove posts that do not follow our posting guidelines, and we reserve the right to remove any post for any reason. I assume you are familiar with Google, Bing, and [insert your favorite search engine]. 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 shaded overlays indicate night and civil twilight. The difference I have found that the sun is almost always shining so you don't get the cloudy overcast days that I typically experience when in the East. Mean Temp: 74 °F. The lowest daily average high temperature is 65°F on December 25. 2017 2018 2019 2020. The daily average high (red line) and low (blue line) temperature, with 25th to 75th and 10th to 90th percentile bands. The average of mean hourly wind speeds (dark gray line), with 25th to 75th and 10th to 90th percentile bands. For each station, the records are corrected for the elevation difference between that station and Scottsdale according to the International Standard Atmosphere , and by the relative change present in the MERRA-2 satellite-era reanalysis between the two locations. We draw particular cautious attention to our reliance on the MERRA-2 model-based reconstructions for a number of important data series. The day, twilights (civil, nautical, and astronomical), and night are indicated by the color bands from yellow to gray. 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. The percentage of time spent in each cloud cover band, categorized by the percentage of the sky covered by clouds. Shortwave radiation includes visible light and ultraviolet radiation. 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 shortest day of the month is December 21, with 9 hours, 56 minutes of daylight and the longest day is December 1, with 10 hours, 5 minutes of daylight. December is on average the COOLEST month. The information on this site is provided as is, without any assurances as to its accuracy or suitability for any purpose. The figure below presents a compact representation of key lunar data for December 2020. For reference, on April 29, the windiest day of the year, the daily average wind speed is 7.6 miles per hour, while on August 15, the calmest day of the year, the daily average wind speed is 5.8 miles per hour. The earliest sunrise of the month in Scottsdale is 7:14 AM on December 1 and the latest sunrise is 18 minutes later at 7:31 AM on December 31. Scottsdale Weather for December 2019. Visibility: 24 … The shaded overlays indicate night and civil twilight. Land Use data comes from the Global Land Cover SHARE database , published by the Food and Agriculture Organization of the United Nations. The percentage of hours in which the mean wind direction is from each of the four cardinal wind directions, excluding hours in which the mean wind speed is less than. 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 . Showing: All Year Climate & Weather Averages in Scottsdale. The lowest daily average low temperature is 44°F on December 27. Ouargla, Algeria (6,350 miles away) is the far-away foreign place with temperatures most similar to Scottsdale (view comparison). Temperatures in Scottsdale are sufficiently warm year round that it is not entirely meaningful to discuss the growing season in these terms. This section discusses the wide-area hourly average wind vector (speed and direction) at 10 meters above the ground. While no one can truly predict the weather, even here in the desert, it’s safe to expect perfect temperatures for the majority of December. The thin dotted lines are the corresponding average perceived temperatures. The percentage of time spent in various temperature bands. The figure below shows you a compact characterization of the hourly average temperatures for the quarter of the year centered on December. In Scottsdale, the chance of a wet day over the course of December is essentially constant, remaining around 11% throughout. Wind: 4 mph. One year (maybe 4 years ago), it snowed one evening. Within 50 miles contains very significant variations in elevation (7,057 feet). In this report, we use a base of 50°F and a cap of 86°F. 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. This report illustrates the typical weather in Scottsdale, based on a statistical analysis of historical hourly weather reports and model reconstructions from January 1, 1980 to December 31, 2016. Elevation data comes from the Shuttle Radar Topography Mission (SRTM) , published by NASA's Jet Propulsion Laboratory. C° F° Pretty pleasant......can get a little chilly....daytime temps 60s and low 70s. Low Temp: 43 °F. The lowest average daily incident shortwave solar energy during December is 3.1 kWh on December 23. The stations contributing to this reconstruction are: Scottsdale Airport (42%, 13 kilometers, north); Phoenix Sky Harbor International Airport (43%, 13 kilometers, southwest); and Chandler Municipal Airport (15%, 28 kilometers, south). Nights can get cold. A couple of years ago we attended the luminarias event at night at the Desert Botanical Gardens--the only time I've ever listened to a steel band while wearing a coat, hat and gloves :-). To review the Tripadvisor Forums Posting Guidelines, please follow this link: http://www.tripadvisor.com/pages/forums_posting_guidelines.html. We have a home in (ta && ta.queueForLoad ? Dew Point: 38 °F. During the last part of the month we have had about a 50/50 shot of them being in the 50's during the day. The hourly average wind direction in Scottsdale throughout December is predominantly from the east, with a peak proportion of 55% on December 29. The data used in these monthly averages covers a period of over 100 years right up until last year. The highest chance of overcast or mostly cloudy conditions is 37% on December 27.
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