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Over the contiguous United States, total annual precipitation increased at an average rate of 6.1 percent per century since 1900, with the greatest increases within the East North Central climate region (11.6 percent per century) and the South (11.1 percent). Hawaii was the only region to show a decrease (−9.25 percent). [89]
The precipitation threshold (in millimetres) involves first multiplying the average annual temperature in °C by 20, then adding 280 if 70% or more of the total precipitation is in the high-sun summer half of the year (April through September in the Northern Hemisphere, or October through March in the Southern), or 140 if 30–70% of the total ...
Over the contiguous United States, total annual precipitation increased at an average rate of 6.1% per century since 1900, with the greatest increases within the East North Central climate region (11.6% per century) and the South (11.1%). Hawaii was the only region to show a decrease (−9.25%). [112]
Annual average humidity values vary from 55% in Flagstaff to 23% in Yuma. Due to the high temperatures, low humidity, and occurrence of sunshine, Arizona has high rates of evaporation. Average annual lake evaporation varies from about 80 inches (2,000 mm) in the southwestern part of the state to about 50 inches (1,300 mm) in the northeast. [4]
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Low-lying areas along the Gulf of Mexico receive in excess of 1,000 millimeters (39.4 in) of rainfall in an average year, with the wettest region being the southeastern state of Tabasco, which typically receives approximately 2,000 millimeters (78.7 in) of rainfall on an annual basis.
Deer Valley is located in the city of Phoenix, Arizona, United States.As of 2010, the population was 165,656, 25% of whom were under 18 years of age. [1] The origin of the name is unclear; it first appeared on a 1921 United States General Land Office map of the area describing the valley created by Skunk Creek.
The Mojave Desert is the hottest desert in North America, located primarily in southeastern California and Southern Nevada. Its total area is 22,000 sq mi (57,000 km 2). The largest cold desert is the Great Basin Desert, which encompasses much of the northern Basin and Range Province, north of the Mojave Desert.