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The following is a list of cities by sunshine duration.Sunshine duration is a climatological indicator, measuring duration of sunshine in given period (usually, a day or a year) for a given location on Earth, typically expressed as an averaged value over several years.
Hong Kong Observatory. Archived from the original on 2013-12-19. Retrieved 2016-03-10. ^ "Monthly and annual means, maximum and minimum values of meteorological elements for the period 1981–2010-Belgrade" (in Serbian). Republic Hydrometeorological Service of Serbia. Retrieved 8 September 2012. ^ "Monthly sunshine hours Niš".
Sunshine duration. Sunshine duration or sunshine hours is a climatological indicator, measuring duration of sunshine in given period (usually, a day or a year) for a given location on Earth, typically expressed as an averaged value over several years. It is a general indicator of cloudiness of a location, and thus differs from insolation, which ...
Following this criteria, Tri-Cities may very well have an average of 300 sunny days per year. However, a local man, Jim Zimmerlin, thought this was a misleading, counter-intuitive definition.
The average number of "wet days" (days with more than 1 mm (0.039 in) of rain) ranges from about 151 days a year along the east and southeast coasts, to about 225 days a year in parts of the west. The wettest weather station is Glanagimla, Leenane, Co. Galway, which averages 2,874.59 mm (113.17 in) rain per year.
San Diego's annual snowfall is 0 inches per year while the nation usually sees an average of 24.2 inches (610 mm) per year. The United States average for days above 90 °F (32 °C) is 37.9 days while San Diego's is only 2.5 days, and there are, on average 0 days below 32 °F (0 °C) in San Diego, while the national average is 88 days.
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).
The overall climate throughout the year is mild and moderately wet. [1] Summer days are usually warm and pleasant with average temperatures between 15 and 25 °C (59 and 77 °F), and a fair amount of sunshine. [2] Each year, however, there are a few days when the temperature rises above 32 °C (90 °F).