First and Last Dates for selected Temperatures Thresholds in Phoenix, Yuma, and El Centro
National Weather Service United States Department of Commerce

When does Phoenix typically hit 100 degrees? How about 110 in Yuma? The following list provides official 30-year averages for certain temperature thresholds, as well as the earliest and latest days of occurrence for each if these cities. 

 

Phoenix, AZ

Temperature Average First Date
of Occurrence
(1991-2020)
Average Last Date
of Occurrence
(1991-2020)
Earliest
(1896-Present)
Latest
(1896-Present)
85° F Mar 6 Nov 11 Jan 19, 1971 Dec 29, 1980
86° F Mar 13 Nov 10 Jan 19, 1971 Dec 16, 1980
87° F Mar 17 Nov 9 Jan 19, 1971 Dec 10, 1950
88° F Mar 20 Nov 5 Jan 19, 1971 Nov 26, 2017
89° F Mar 25 Nov 2 Feb 7, 1963 Nov 26, 2017
90° F Mar 30 Oct 30 Feb 17, 2016 Nov 17, 2020
91° F Apr 1 Oct 26 Feb 24, 1904 Nov 17, 2020
92° F Apr 3 Oct 24 Feb 25, 1921 Nov 17, 2020
93° F Apr 6 Oct 22 Mar 5, 1972 Nov 12, 1999
94° F Apr 9 Oct 19 Mar 10, 1989 Nov 6, 2007
95° F Apr 12 Oct 18 Mar 10, 1989 Nov 5, 2020
96° F Apr 14 Oct 16 Mar 16, 2007 Nov 5, 2020
97° F Apr 19 Oct 13 Mar 16, 2007 Nov 5, 2020
98° F Apr 24 Oct 11 Mar 16, 2007 Nov 5, 2020
99° F Apr 28 Oct 8 Mar 16, 2007 Nov 5, 2020
100° F May 2 Oct 5 Mar 26, 1988 Oct 27, 2016
101° F May 9 Oct 1 Apr 6, 1989 Oct 22, 2003
102° F May 14 Sep 29 Apr 6, 1989 Oct 22, 2003
103° F May 18 Sep 26 Apr 7, 1989 Oct 21, 2003
104° F May 20 Sep 22 Apr 7, 1989 Oct 10, 1991
105° F May 22 Sep 20 Apr 20, 1989 Oct 10, 1991
106° F May 27 Sep 17 May 2, 1947 Oct 2, 2020
107° F May 31 Sep 14 May 2, 1947 Oct 2, 1980
108° F Jun 4 Sep 6 May 3, 1947 Sep 28, 1992
109° F Jun 7 Aug 30 May 3, 1947 Sep 22, 1989
110° F Jun 11 Aug 26 May 8, 1989 Sep 19, 2010

 

Yuma, AZ

Temperature Average First Date
of Occurrence
(1991-2020)
Average Last Date
of Occurrence
(1991-2020)
Earliest
(1878-Present)
Latest
(1878-Present)
85 °F Feb 23 Nov 11 Jan 17, 2011 Dec 12, 1958
86 °F Feb 27 Nov 9 Jan 17, 2011 Dec 3, 1958
87 °F Mar 7 Nov 8 Jan 19, 1971 Nov 29, 1950
88 °F Mar 13 Nov 6 Jan 19, 1971 Nov 27, 1950
89 °F Mar 17 Nov 3 Feb 3, 1963 Nov 26, 2017
90 °F Mar 21 Nov 1 Feb 3, 1963 Nov 26, 2017
91 °F Mar 22 Oct 31 Feb 3, 1963 Nov 23, 2017
92 °F Mar 28 Oct 28 Feb 4, 1963 Nov 14, 1906
93 °F Mar 31 Oct 24 Feb 10, 1951 Nov 14, 1906
94 °F Apr 4 Oct 22 Feb 14, 1957 Nov 9, 1980
95 °F Apr 8 Oct 18 Feb 25, 1986 Nov 6, 1988
96 °F Apr 11 Oct 16 Feb 26, 1986 Nov 6, 1988
97 °F Apr 16 Oct 14 Feb 28, 1986 Nov 5, 1980
98 °F Apr 18 Oct 11 Mar 4, 1910 Nov 3, 1962
99 °F Apr 22 Oct 9 Mar 10, 1916 Oct 25, 1959
100 °F Apr 25 Oct 6 Mar 12, 1916 Oct 25, 1959
101 °F Apr 29 Oct 5 Mar 17, 2007 Oct 24, 1959
102 °F May 7 Oct 3 Mar 21, 2004 Oct 24, 1959
103 °F May 11 Oct 1 Apr 3, 1961 Oct 24, 1959
104 °F May 18 Sep 29 Apr 4, 1961 Oct 24, 1959
105 °F May 23 Sep 26 Apr 6, 1989 Oct 24, 1959
106 °F May 26 Sep 24 Apr 6, 1989 Oct 16, 1958
107 °F May 30 Sep 21 Apr 6, 1989 Oct 12, 1950
108 °F Jun 2 Sep 18 May 2, 1947 Oct 12, 1950
109 °F Jun 5 Sep 11 May 2, 1947 Oct 12, 1950
110 °F Jun 11 Sep 6 May 2, 1947 Oct 2, 1980

 

 

El Centro, CA

Temperature Average First Date
of Occurrence
(1991-2020)
Average Last Date
of Occurrence
(1991-2020)
Earliest
(1926-Present)
Latest
(1926-Present)
85 °F Feb 22 Nov 11 Jan 7, 1962 Dec 24, 1964
86 °F Feb 28 Nov 10 Jan 7, 1962 Dec 24, 1964
87 °F Mar 3 Nov 9 Jan 7, 1962 Dec 24, 1964
88 °F Mar 10 Nov 5 Jan 18, 1971 Dec 7, 1938
89 °F Mar 15 Nov 4 Jan 18, 1971 Dec 3, 1958
90 °F Mar 18 Nov 2 Jan 19, 1971 Dec 3, 1958
91 °F Mar 23 Oct 31 Feb 6, 1963 Nov 23, 2017
92 °F Mar 28 Oct 27 Feb 24, 1986 Nov 15, 1967
93 °F Apr 2 Oct 26 Feb 25, 1986 Nov 7, 2008
94 °F Apr 5 Oct 24 Feb 25, 1986 Nov 7, 2008
95 °F Apr 8 Oct 20 Feb 26, 1986 Nov 7, 2008
96 °F Apr 12 Oct 16 Feb 27, 1986 Nov 7, 2008
97 °F Apr 15 Oct 14 Mar 6, 1972 Nov 7, 2008
98 °F Apr 19 Oct 12 Mar 15, 1934 Nov 7, 2008
99 °F Apr 25 Oct 11 Mar 15, 1934 Nov 7, 2008
100 °F Apr 28 Oct 9 Mar 15, 1934 Nov 7, 2008
101 °F May 5 Oct 6 Mar 17, 2007 Nov 7, 2008
102 °F May 12 Oct 3 Apr 4, 1961 Oct 23, 2003
103 °F May 16 Sep 29 Apr 4, 1961 Oct 21, 2003
104 °F May 19 Sep 28 Apr 6, 1989 Oct 21, 2003
105 °F May 22 Sep 25 Apr 7, 1989 Oct 12, 1965
106 °F May 25 Sep 24 Apr 28, 2007 Oct 12, 1965
107 °F May 31 Sep 21 May 2, 1947 Oct 3, 2012
108 °F Jun 4 Sep 15 May 2, 1947 Oct 3, 1952
109 °F Jun 6 Sep 10 May 2, 1947 Oct 1, 1980
110 °F Jun 14 Sep 5 May 2, 1947 Oct 1, 1980