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The region's trademark dry and sunny weather is interrupted by sporadic Pacific storms in the winter and the arrival of the North American monsoon in the summer. [16] Historically, the monsoon officially started when the average dew point was 55 °F (13 °C) for three days in a row—typically occurring in early July. To increase monsoon ...
It's no secret that Phoenix is hot, but late summer and the start of fall were scorchers, even by Valley of the Sun standards. Between Sept. 23 and Oct. 14, Phoenix set daily record high ...
Monsoon variability from one summer to the next is substantial, and exceeds the normal monsoon seasonal precipitation at most locations. For example, the normal monsoon precipitation at Tucson, Arizona is 6.06 inches (154 mm). The driest monsoon season measured 1.59 inches (40 mm), and the wettest measured 13.84 inches (352 mm). [13]
There is a dry season which stretches from December to June, and a rainy season from July to November. [71] Saipan's average annual precipitation is 82.36 inches (2,092 mm), with 67 percent falling during the rainy season. [72] Typhoons frequent the island chain, which can lead to excessive rainfall. [73]
The annual North American monsoon, which officially runs from June 15 to Sept. 30, is a notable weather phenomenon for the southwestern United States in any year. But this year, in particular, has ...
After a summer of extreme heat, Arizona’s most populous city is in the record books again. This time Phoenix is notching a record for dry heat. The National Weather Service said Sunday that the ...
The dew point of a given body of air is the temperature to which it must be cooled to become saturated with water vapor. This temperature depends on the pressure and water content of the air. When the air is cooled below the dew point, its moisture capacity is reduced and airborne water vapor will condense to form liquid water known as dew. [1]
Following the driest monsoon season on record in 2020, one of the wettest monsoons on record across the Southwest occurred in 2021. 'Normal to above normal rain' expected for Arizona monsoon ...