Arizona heat facts

The highest temperature Phoenix has ever endured was 122 degrees back on June 26th, 1990. 

Even more amazing is the fact that our hottest overnight low was 96 degrees on July 15th, 2003.

Phoenix's longest streak of  temperatures at 110 degrees or hotter was 18 days in 1974.  That streak started on June 12th and ended on June 29th. 

We baked through 76 days in a row of 100 degrees or higher back in 1993.  An astounding 115 days in a row with temperatures above 95 degrees in 1981 and 154 days with our daytime highs reaching 90+ degrees in 1983.

The earliest Phoenix ever hit 110 was on May 8th, 1989 and the earliest we ever hit 100 was the same year on  April 6th.

  Phoenix Tucson Flagstaff
Highest Maximum: 122 117 97
Date: June 26th, 1990 June 26th, 1990 July 5th, 1973
Highest Minimum: 96 89 68
Date: July 15th, 2003 July 22nd, 2006 July 2nd, 2002
Consecutive Days of 110 or more 18 Days 6 Days 0 Days
Ending Date: June 29th, 1974 June 29th, 1974 *
Consecutive Days of 100 or more 76 Days 39 Days 0 Days
Ending Date: Aug. 24th, 1993 July 22nd, 2005 *
Consecutive Days of 95 or more 115 Days 63 Days 2 Days
Ending Date: Sept. 21st, 1981 Sept. 17, 1924 June 26th, 1970
Consecutive Days of 90 or more 154 Days 126 Days 11 Days
Ending Date: Oct. 7th, 1983 Oct. 4th, 1924 July 1st, 1990
Earliest 110 May 8th, 1989 May 29th, 1910 *
Earliest 100 March 26th, 1988 April 19th, 1989 *

* Flagstaff has never officially reached 100 degrees
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