Search results
Results from the WOW.Com Content Network
Average annual precipitation Percent Area in U.S. Drought Monitor Categories. The prevailing westerly winds from the oceans also bring moisture, and the northern parts of the state generally receive higher annual rainfall amounts than the south. California's mountain ranges influence the climate as well: moisture-laden air from the west cools ...
The city averages approximately 300 days of sunshine, or over 85% of daylight hours, per year, [14] [15] and receives scant rainfall―the average annual total at Phoenix Sky Harbor International Airport is 7.22 in (183 mm).
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]
Arizona has an average annual rainfall of 12.7 in (323 mm), [62] which comes during two rainy seasons, with cold fronts coming from the Pacific Ocean during the winter and a monsoon in the summer. [63] The monsoon season occurs toward the end of summer. In July or August, the dewpoint rises dramatically for a brief period.
There is an annual average precipitation of 2 to 6 inches (51 to 152 mm), although regions at high altitudes such as the portion of the Mojave Desert in the San Gabriel mountains may receive more rain.
In addition, climate change has impacted California's precipitation patterns in recent years with effects including more rapid snowmelt, more frequent heatwaves, and drier conditions across the state. [21] California precipitation and snowpack is measured by the state of California by "water year", which runs from October 1 to September 30. [22]
For premium support please call: 800-290-4726 more ways to reach us
The Arizona uplands are also warm year-round, but they receive 100–300 mm (approx. 4–12") of average annual rainfall, which falls in a more regular bi-seasonal pattern. [ 2 ] According to the Köppen climate classification system, the majority of the Sonoran Desert has a hot desert climate ( BWh ).