FACTS ABOUT 100 DEGREE TEMPERATURES AT PHOENIX

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

121     July 28, 1995

120     June 25, 1990

118     July 16, 1925, June 24, 1929, July 11, 1958, July 4, 1989, June 27, 1990

            June 28, 1990, July 27, 1995, July 21 2006