National Weather Service United States Department of Commerce

Extreme Temperature Facts for Phoenix,Yuma, and El Centro

 

 

Phoenix

Period of Record (POR)

(1896-2020)

Yuma

Period of Record (POR) (1878-2020)

El Centro 

Period of Record (POR) (1926-2020)

Average First 100° F Day May 11 (POR)
May 2 (1991-2020)
Apr 29 (POR)
Apr 25 (1991-2020)

Apr 30 (POR)
Apr 28 (1991-2020)

Earliest First 100° F Day 26 Mar 1988 12 Mar 1916 15 Mar 1934
Latest First 100° F Day 18 Jun 1913 13 Jun 1971 15 Jun 1998
Average Last 100° F Day Sep 29 (POR)
Oct 5 (1991-2020)
Oct 4 (POR)
Oct 6 (1991-2020)
Oct 6 (POR)
Oct 9 (1991-2020)
Earliest Last 100° F Day 2 Sep 1904 5 Sep 1976 1 Sep 1976
Latest Last 100° F Day 27 Oct 2016 25 Oct 1959 7 Nov 2008
Average number of 100° F or greater days per year 93 (POR)
111 (1991-2020)
109 (POR)
118 (1991-2020)
109 (POR)
116 (1991-2020)
Fewest number of 100° F or greater days 48 (1913) 80 (1884) 82 (1976)
Greatest number of 100° F or greater days 145 (2020) 148 (2020) 144 (2020)
Longest stretch of 100° F or greater days 76 (10 Jun 1993 - 24 Aug 1993) 99 (31 May 2006 - 6 Sep 2006) 99 (31 May 2006 - 6 Sep 2006)
Average First 110° F Day 18 Jun (POR)
11 Jun (1991-2020)
14 Jun (POR)
11 Jun (1991-2020)
13 Jun (POR)
14 Jun (1991-2020)
Earliest First 110° F Day 8 May 1989 2 May 1947 2 May 1947
Latest First 110° F Day 1911 No 110° F Day 22 Jul 1921 12 Jul 1982
Average Last 110° F Day 12 Aug (POR)
26 Aug (1991-2020)
1 Sep (POR)
6 Sep (1991-2020)
4 Sep (POR)
5 Sep (1991-2020)
Earliest Last 110° F Day 5 Jun 1912 11 Jul 1904 25 Jul 1988
Latest Last 110° F Day 19 Sep 2010 2 Oct 1980 1 Oct 1980
Average number of 110°F or greater days per year 12 (POR)
21 (1991-2020)
20 (POR)
25 (1991-2020)
22 (POR)
25 (1991-2020)
Fewest number of 110° F or greater days None (1911) 1 (1904) 2 (1991)
Greatest number of 110° F or greater days 53 (2020) 53 (1994) 53 (2016)
Longest stretch of 110°F or greater days 31 (30 Jun 2023 - 30 Jul 2023) 18 (24 Jul 1995 - 10 Aug 1995) 22 (8 Jul 2016 - 29 Jul 2016)
Top 5 Hottest Days

1. 122 (26 Jun 1990)
2. 121 (28 Jul 1995)
3. 120 (25 Jun 1990)
4. 119 (25 Jul 2023)
    119 (20 Jul 2023 and 2 other times)

1. 124 (28 Jul 1995)
2. 123 (1 Sep 1950)
3. 122 (26 Jun 1990)
4. 120 (20 Jun 2017 and 5 other times)
1. 122 (22 Jun 2017)
2. 121 (5 Sep 2020)
3. 121 (24 Jul 2018)
4. 121 (27 Jul 2017 and 3 other times)
Average number of 32° F or lower days per year 8 (POR)
1 (1991-2020)
3 (POR)
0 (1991-2020)
6 (POR)
3 (1991-2020)
Greatest number of 32° F or lower days 35 (1964) 15 (1911) 26 (1964)
Top 5 Coldest Days

1. 16 (7 Jan 1913)
2. 17 (6 Jan 1913)
3. 19 (7 Jan 1971)
    19 (8 Jan 1913)
5. 20 (8 Jan 1971 and 2 other times)

1. 22 (24 Jan 1937)
    22 (26 Dec 1950)
    22 (20 Jan 1883)
4. 24 (8 Jan 1971 and 2 other times)
1. 16 (22 Jan 1937)
2. 17 (23 Jan 1937)
3. 19 (24 Jan 1937)
4. 21 (14 Jan 2007 and 5 other times)