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This report describes the typical weather at the Grand Canyon National Park Airport (Grand Canyon National Park, Arizona, United States) weather station over the course of an average September. It is based on the historical records from 1981 to 2012. Earlier records are either unavailable or unreliable.he probability that precipitation will be observed at this location varies throughout the month. Precipitation is most likely around September 2, occurring in 30% of days. Precipitation is least likely around September 30, occurring in 19% of days.
The number of deaths at the Grand Canyon this year already is above the annual average of 12. Eighteen people have died at the canyon since Jan. 1, according to authorities, including three on river trips, two who fell over the rim, one in a car accident and several others from natural causes or medical distress. The number includes visitors and residents of Grand Canyon Village.