El Cajon, CA: May

31 May 2026: May 2026 averaged 65.9°F in El Cajon, CA, the warmest May since 2025, 27th warmest of 108.

May 2026

Mean temperature: 65.9°F; Warmest since 2025; 27th warmest of 108
Precipitation: 0.34 in; Wettest since 2025; 41st wettest of 122

A normal May in El Cajon, CA (1991 to 2020): 0.06 in of precipitation, between 0.00 in and 1.08 in in eight years of ten.

The mean temperature of every May in El Cajon, CA since 1899: 65.9°F in 2026; the highest is 69.4°F, in 2014.

Every year, ranked, as a table

Every May in El Cajon, CA from 1899 to 2026, ranked: the mean temperature, the mean high and the mean low from the warmest, the precipitation from the wettest; a year missing more than a tenth of its days is not ranked.

Year	Mean, °F	Rank	High, °F	Rank	Low, °F	Rank	Precipitation, in	Rank	Days missing
2026	65.9	27	75	65	56.7	14	0.34	41	0
2025	66.2	22	75.8	54	56.6	18	0.41	36	0
2024	64	58	72.5	95	55.5	28	0.13	62	0
2023	62.8	78	69.8	109	55.7	23	0.27	45	0
2022	64.8	44	74.8	68	54.7	35	0.00	106	0
2021	65.6	33	74.5	72	56.7	14	0.04	80	0
2020	69.3	2	80.1	15	58.5	3	0.03	85	0
2019	62.9	73	70.2	108	55.6	26	1.07	12	0
2018	65.2	37	73.6	88	56.7	14	0.30	43	0
2017	66	25	75.3	62	56.7	14	1.37	7	0
2016	64.8	44	72.4	96	57.2	8	0.67	22	0
2015	64.4	54	71.7	102	57	9	1.13	11	0
2014	69.4	1	81.1	9	57.8	6	0.00	106	0
2013	67.9	6	77.6	33	58.1	4	0.68	21	0
2012	66.1	23	76.9	45	55.3	29	0.08	71	0
2011	64.5	49	75.7	57	53.4	51	0.43	35	0
2010	64.9	42	76.7	47	53.1	57	0.10	67	0
2009	67.6	7	77.5	34	57.7	7	0.00	106	1
2008	66.7	12	78.8	21	54.6	38	0.41	36	1
2007									4
2006	67.2	10	78.5	24	55.8	22	0.72	19	0
2005	68.1	5	80.4	12	55.6	26	0.06	73	2
2004							0.00	106	14
2003							0.09	69	4
2002	65.1	39	76.3	49	54.1	41	0.00	106	3
2001	69.2	3	81.5	4	56.8	12	0.00	106	1
2000	69	4	81.5	4	56.5	20	0.02	88	0
1999	64.4	54	75.6	59	53.3	52	0.00	106	2
1998	64	58	74	78	53.9	43	1.21	9	0
1997			86	1	58.7	2	trace	96	4
1996					56.6	18	0.02	88	4
1995	61.7	92	70.8	106	52.7	63	0.64	25	0
1994	63.9	61	72.8	94	55.3	29	0.02	88	3
1993					58.1	4	0.00	106	6
1992			77.5	34	61.4	1	0.01	92	4
1991			74.5	72	52.9	60	0.00	106	4
1990					54.7	35	0.36	39	5
1989	65.8	28	76.3	49	55.1	32	0.06	73	3
1988					53.3	52	trace	96	6
1987	66.3	18	75.8	54	57	9	0.06	73	2
1986					54.3	40	0.00	106	4
1985					54.9	33	0.10	67	5
1984					55.7	23	0.00	106	5
1983	66.4	17	79.4	17	53.3	52	0.13	62	2
1982					57	9			4
1981	67.6	7	78.4	27	56.8	12	0.15	56	0
1980	62.3	84	71.6	103	53	58	0.46	32	0
1979	65.3	36	75.9	53	54.7	35	0.14	58	0
1978	66.9	11	79.9	16	53.8	45	0.14	58	0
1977	62.9	73	72.3	99	53.5	49	2.17	3	1
1976	66.3	18	76.7	47	55.9	21	trace	96	0
1975	62.9	73	73.6	88	52.3	64	0.04	80	0
1974	64.3	57	73.8	83	54.8	34	0.05	79	0
1973	65.1	39	76.1	52	54.1	41	0.04	80	0
1972	66.5	15	77.7	32	55.2	31	0.44	34	0
1971	61.8	91	71.9	100	51.8	69	1.19	10	0
1970	65.8	28	78.3	28	53.3	52	trace	96	0
1969	65.8	28	75.8	54	55.7	23	0.17	54	0
1968	64.5	49	75.5	61	53.6	47	0.24	48	0
1967	64.5	49	77.3	36	51.7	72	0.03	85	0
1966							0.03	85	31
1965	63	72	74	78	52	66	trace	96	0
1964	62.1	88	73.8	83	50.5	86	0.69	20	1
1963	64.5	49	75.1	64	53.8	45	0.09	69	0
1962	62.8	78	74	78	51.4	76	0.81	16	1
1961	63.1	70	73.1	92	53	58	trace	96	1
1960	66.1	23	78.7	22	53.5	49	0.37	38	0
1959	63.4	67	74.9	67	52	66	0.01	92	0
1958	66.3	18	81	10	51.5	75	0.22	50	0
1957	61.6	95	71.9	100	51.3	79	2.21	2	1
1956	64.7	47	78	31	51.3	79	0.31	42	0
1955	61.1	100	73.4	90	48.9	108	1.61	4	0
1954									24
1953	62.9	73	80.8	11	45.1	119	0.27	45	0
1952	66.7	12	83.9	2	49.5	101	0.00	106	0
1951	62.1	88	75.2	63	49.1	106	0.20	51	0
1950	59.3	106	72.4	96	46.3	117	0.06	73	0
1949	61.9	90	74.6	71	48.6	109	0.63	26	1
1948	61.7	92	76.8	46	46.5	116	0.00	106	0
1947	64.9	42	78.2	30	51.4	76	0.08	71	1
1946	62.9	73	74.2	76	51.7	72	trace	96	1
1945					47.5	114	trace	96	5
1944	63.2	69	75.6	59	50.7	85	0.45	33	0
1943	65	41	78.9	20	50.4	90	0.18	53	3
1942	62.2	86	76.2	51	48.2	113	0.02	88	2
1941	66.6	14	80.3	13	52.9	60	0.84	15	2
1940	67.4	9	81.8	3	52.9	60	0.00	106	0
1939	63.8	62	77.1	40	50.4	90	0.06	73	0
1938	63.3	68	77.1	40	49.9	98	0.76	17	2
1937	63.1	70	74.5	72	51.8	69	0.35	40	0
1936	64.5	49	78.5	24	50.5	86	0.15	56	0
1935	62.2	86	74	78	50.4	90	0.13	62	0
1934	65.7	31	81.4	8	50	97	0.00	106	0
1933	57.6	108	71	105	44.1	120	0.95	14	0
1932	61.6	95	73.8	83	49.5	101	0.01	92	0
1931	66.5	15	78.7	22	54.4	39	0.62	27	0
1930	60.4	102	72.4	96	48.5	110	3.69	1	0
1929	65.7	31	81.5	4	49.8	99	trace	96	0
1928	65.5	34	77.3	36	53.6	47	0.59	28	0
1927	64	58	78.5	24	49.5	101	0.59	28	0
1926	65.2	37	77.3	36	53.2	56	0.12	65	0
1925	64.6	48	77	42	52.2	65	0.01	92	0
1924	65.5	34	79.1	19	51.8	69	trace	96	0
1923	66.3	18	81.5	4	51.2	81			0
1922	63.7	64	78.3	28	49.1	106	0.53	30	0
1921	58.8	107	68.2	111	49.3	104			0
1920	62.8	78	74.7	69	50.8	84	0.48	31	0
1919	63.8	62	73.7	86	53.9	43	0.14	58	0
1918	62.7	81	74.4	75	51.1	83	0.06	73	0
1917	59.6	104	69.5	110	49.7	100	0.67	22	0
1916	62.7	81	77	42	48.4	111	0.12	65	0
1915	61.6	95	72.9	93	50.4	90	1.42	6	0
1914	61.1	100	70.7	107	51.4	76	0.27	45	0
1913	61.5	98	73.7	86	49.2	105	0.16	55	0
1912							1.27	8	15
1911									14
1910	66	25	80.3	13	51.2	81	0.00	106	1
1909	62.7	81	75	65	50.5	86	0.00	106	0
1908	59.9	103	74.2	76	45.5	118	0.23	49	0
1907	63.5	66	77	42	50.1	96	0.20	51	0
1906	62.3	84	74	78	50.5	86	0.73	18	0
1905	61.7	92	73.2	91	50.2	95	1.02	13	0
1904	63.7	64	75.7	57	51.9	68	0.29	44	1
1903	64.4	54	77.3	36	51.6	74	0.14	58	0
1902	61.5	98	74.7	69	48.3	112	0.04	80	0
1901							0.67	22	13
1900	64.8	44	79.2	18	50.3	94	1.48	5	0
1899	59.4	105	71.3	104	47.5	114	0.04	80	0

Warmest, coldest, wettest and driest

Warmest
Year	Mean, °F
2014	69.4
2020	69.3
2001	69.2
2000	69
2005	68.1
2013	67.9
2009	67.6
1981	67.6
1940	67.4
2006	67.2

Coldest
Year	Mean, °F
1933	57.6
1921	58.8
1950	59.3
1899	59.4
1917	59.6
1908	59.9
1930	60.4
1955	61.1
1914	61.1
1913	61.5
More years share the last value

Wettest
Year	Precipitation, in
1930	3.69
1957	2.21
1977	2.17
1955	1.61
1900	1.48
1915	1.42
2017	1.37
1912	1.27
1998	1.21
1971	1.19

Driest
Year	Precipitation, in
2022	0.00
2014	0.00
2009	0.00
2004	0.00
2002	0.00
2001	0.00
1999	0.00
1993	0.00
1991	0.00
1986	0.00
More years share the last value

The hottest, coldest and wettest days

Hottest day: 85°F; 20 May 2026, 19 May 2026, 11 May 2026
Coldest night: 50°F; 6 May 2026
Wettest day: 0.24 in; 5 May 2026

Every month, season and year

Months

Seasons

Years

El Cajon, CA the day's answers

All-time records

Every answer in words

May 2026 brought 0.34 in of precipitation in El Cajon, CA, the wettest May since 2025, 41st wettest of 122.
The hottest day of May 2026 in El Cajon, CA: 85°F on Wednesday 20 May 2026, Tuesday 19 May 2026 and Monday 11 May 2026.
The coldest night of May 2026 in El Cajon, CA: a low of 50°F on Wednesday 6 May 2026.
The wettest day of May 2026 in El Cajon, CA: 0.24 in on Tuesday 5 May 2026.