100 DEGREE DAY STATISTICS FOR PHOENIX, ARIZONA
It seems, at times, that 100 degree weather and Phoenix go together like 'mom' and 'apple pie'. However, this is a bit of a misconception, as the mercury stays in double-digits for the bulk of the year. In fact, in 1913, Phoenix only registered 48 days where the mercury hit 100 degrees or higher. Nevertheless, there is a lot of interest by the public and media in 100 degree statistics, especially with regards to the average first 100 degree reading at Sky Harbor. Statistical information concerning 100 degree and hotter temperatures in Phoenix:
FACTS ABOUT 100 DEGREE TEMPERATURES IN PHOENIX ARIZONA
The first occurrence of 100 degrees or higher annually:
Earliest - March 26, 1988
Latest - June 18, 1913
Average - May 13
The last occurrence of 100 degrees or higher
Earliest - September 2, 1904
Latest - October 23, 2003
Average - September 28
The first occurrence of 110 degrees or higher
Earliest - May 8, 1989
Latest - August 9, 1915
Average - June 20
The last occurrence of 110 degrees or higher
Earliest - June 5, 1912
Latest - September 15, 2000
Average - August 10
Average annual number of days with maximum temperatures of 100 of higher 1896-2006: 92
Average annual number of days with maximum temperatures of 100 of higher 1971-2000: 106
Least number of days with maximum temperatures of 100 or higher: 48 in 1913
Greatest number of days with maximum temperatures of 100 or higher: 143 in 1989
Greatest number of consecutive days with maximum temperatures of 100 or higher: 76 in 1993
Average annual number of days with maximum temperatures of 110 of higher 1896-2006: 10
Average annual number of days with maximum temperatures of 110 of higher 1971-2000: 17
Least number of days with maximum temperatures of 110 or higher: 0 in 1911
Greatest number of days with maximum temperatures of 110 or higher: 32 in 2007
Greatest number of consecutive days with maximum temperatures of 110 or higher: 18 in 1974
Highest Temperatures ever recorded in Phoenix
122 June 26, 1990
121July 28, 1995
120June 25, 1990
118July 16, 1925, June 24, 1929, July 11, 1958, July 4, 1989, June 27, 1990
June 28, 1990, July 27, 1995, July 21 2006