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