Phoenix’s temperatures have trended upward for many decades because of urban sprawl and the associated increase in heat-absorbing surfaces such as asphalt and concrete. Start your day with the top stories you missed while you were sleeping. The temperature of the air is probably the element that most people are aware of. (In Arizona, these storms are sometimes referred to as "haboobs."). Summer in Phoenix is likely what you expect: Hot, sunny, and best spent indoors under the cover of air-conditioning. Throughout the year there are periods, often several days in length, in which winds remain under 10 miles per hour. Although the dry bulb temperatures may be depressed during this period, the “sensible temperatures” seem higher due to the increased humidity of the air. Heat is a silent but efficient killer. The count of 40 deaths is preliminary. Additionally, don't forget to pack sunglasses, a hat to protect your face from the sun, and a high-factor sunscreen. Additional examples include the extreme wildfires in parts of the West, including California where one fire spawned and EF-2 firenado; Death Valley’s historic August heat wave that culminated in a 130° high temperature (likely the highest reliably recorded temperature on record globally); several rounds of extreme heat in Europe, including the highest temperatures on record in September, the second lowest summer minimum Arctic sea ice extent on record; and, the intensification of Hurricane Laura as it crossed the Continental Shelf prior to landfall as a Category 4 hurricane. The days start to get longer and it's a perfect time for hiking. The continued depression of the averaged receipts of solar energy into August is due to the increased water vapor in the atmosphere (curve F, from Reitan, 1960). During the thunderstorm season in July and August, there are often local, strong, gusty winds with considerable blowing dust. The urban island heat effect is another reason for the hot conditions of summer 2020. We chose relative humidity and dew point temperatures for statistical analysis. Most people are familiar with the term “wind-chill factor” which gives the combined effects of wind and temperature as an equivalent calm air temperature. Look for breathable fabrics that wick away moisture. This past summer, high pressure was unusually strong and positioned in the wrong spot to help bring in monsoon moisture. It remained there until September 1924 when it moved to the Ellis Building at 2nd Avenue and Monroe. At an elevation of about 1100 feet, the station is in a level or gently sloping valley running east and west. The Weather Service’s Iñiguez noted that the city has had fewer available cooling centers because of the pandemic, plus a lack of informal cooling locations as a result of limited indoor dining options. Sign up for the The back-to-back records propelled the country’s sixth-largest city to its hottest summer (June through August) on record by a wide margin. Ms. Brazel and Mr. Balling’s research paper, “The Myth of Increasing Moisture Levels in Phoenix”, is also included in this Technical Memorandum. This summer, the heat was intensified by a lack of clouds, rain and storm activity because of a weaker-than-usual summer monsoon, which typically runs from July into early fall. The large drop in energy receipt during July is directly traceable to the increase in cloudiness (curve E) during this period. The first Weather Bureau Office to open in Arizona was in Yuma where the duties were transferred from the Army at Fort Yuma in July 1891. Mark Kear, a geographer at the University of Arizona, emphasized that mortality figures from this year are still being tabulated. Days are usually warm and sunny, but not stifling hot like during the summer months. When it comes to days of 110 degrees or higher, it wasn't such a slim margin. Bulletin American Meteorological Society, 41, 79-87. High temperatures killed a record 172 people in the Phoenix metropolitan area that summer, up from 150 heat deaths in 2016 and 85 in 2015. Hottest August and hottest month: August’s average temperature of 99.1 degrees, 0.8 degrees above the previous hottest August, represents the … Eighteen miles to the southwest lie the Sierra Estrella Mountains with a maximum elevation of 4500 feet MSL, and 30 miles to the west-northwest are found theWhite Tank Mountains with a maximum elevation of 4100 feet MSL. Watch Emmy Award-winning meteorologist April Warnecke weekday mornings on Good Morning Arizona. This is in good agreement with the above research project. We sort of obliterated it.” — National Weather Service meteorologist, Forecasters said there could be some relief over the weekend since thunderstorm and rain might move into the area, according to the. Temperatures are warm and the days are gradually getting longer. Hottest Month: July (106 degrees Fahrenheit/41 degrees Celsius), Coldest Month: December (45 degrees Fahrenheit/7 degrees Celsius). In most sections of the country, people look forward to summer. The systematic variations in June were found to be related in several significant cycles in the data. Areas with milder temperatures around the edges of the valley are utilized by these crops. You can get some great rates at fantastic resorts in the summer, and there are certainly advantages to visiting the Valley of the Sun during the summer months. Snowfall occurs very rarely in the Salt River Valley, while light snows occasionally fall in the higher mountains surrounding the valley. The temperatures are so high this summer because there’s some high pressure, which produces higher temperatures. The purpose of this publication is to provide comprehensive data on the climate of Phoenix. “Year to date we have 40 confirmed heat deaths in Maricopa County, compared to 32 at this time last year,” David Hondula, a senior sustainability scientist at Arizona State University, wrote in an email. Data in this revision are for the period January 1, 1896 through December 31, 1995. Reitan, C.H., 1960: “Distribution of Precipitable Water Vapor over the Continental United States”. December: 67 degrees Fahrenheit (20 degrees Celsius)/45 degrees Fahrenheit (7 degrees Celsius), January: 69 degrees Fahrenheit (20 degrees Celsius)/46 degrees Fahrenheit (8 degrees Celsius), February: 72 degrees Fahrenheit (22 degrees Celsius)/49 degrees Fahrenheit (9 degrees Celsius), The Weather and Climate in Udaipur, Rajasthan, The Weather and Climate in Lake Wales, Florida, September in Phoenix: Weather, What to Pack, and What to See, The Weather and Climate in Southeast Asia, The Weather and Climate in Salt Lake City, Weather in Boston: Climate, Seasons, and Average Monthly Temperature, The Weather and Climate in St. Augustine, Florida, How to Plan Your Trip to Orlando With the Seasons in Mind, Weather in Phoenix: Climate, Seasons, and Average Monthly Temperature, TripSavvy uses cookies to provide you with a great user experience and for our. The dryness sets up a self-reinforcing feedback cycle in which a drier land surface makes it possible for air temperatures to heat up faster, with less solar radiation going toward evaporating water. Local Climatological Data, Monthly for Phoenix, Arizona. It is seen that the largest average daily receipts occur in July and August. These statistical procedures allow us to make conclusions regarding any trends, cycles, or discontinuities in the moisture records. Showing: All Year Climate & Weather Averages in Phoenix. Valley residents have waited a LONG time for a cool-down after a brutal summer of seemingly never-ending heat. The average temperature this summer has been 96 degrees. These data also show high values in the 1910s and 1920s and low values in the 1970s and 1980s. High Temp: 106 °F. Faced with the growth of public interest, civic pride and the need to provide the best coverage for its forecasting and warning services with limited funds, the Weather Bureau could only slowly grant requests to establish weather stations in a rapidly expanding Nation. The second rainfall period occurs during July and August when Arizona is subjected to widespread thunderstorm activity whose moisture supply originates in the Gulf of Mexico, in the Pacific Ocean off the west coast of Mexico and in the Gulf of California. The dew point temperature is a better indicator of the amount of moisture in the air, which is the major contributor to human discomfort. The previous record for the most days of 115 degrees or higher was seven days. Most of the typical sunny summer days in the high country of Arizona fall into the very warm category.
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