Average September Temperature in San Jose by Year

This page contains a list of the average monthly high and low temperatures in San Jose, California for the month of September each year between 1893 and 2023. It is based on NOAA data.

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What Was the Hottest September Ever in San Jose?

2017 was the warmest September in the history of San Jose, California. The average daily high temperature was 85.2 °F, and the average low was 61.6 °F.

What Was the Coldest September Ever in San Jose?

1893 was the coolest September in the history of San Jose, California. The average daily high temperature was 72.9 °F, and the average low was 44.7 °F.

* click column headers to sort

Year	Rank	High (°F)	Low (°F)
2023	26	80.2	58.8
2022	3	84.4	61.2
2021	14	82.4	57.8
2020	6	83.0	60.8
2019	24	81.1	57.9
2018	61	80.3	55.0
2017	1	85.2	61.6
2016	22	81.5	57.6
2015	13	82.4	58.0
2014	43	78.2	58.6
2013	47	79.0	57.3
2012	94	77.4	53.9
2011	11	82.5	58.3
2010	15	82.7	57.5
2009	10	83.1	58.0
2008	21	82.3	57.2
2007	62	78.5	56.6
2006	69	78.7	55.7
2005	93	76.5	54.8
2004	17	82.8	57.1
2003	16	81.3	58.8
2002	19	81.5	58.2
2001	78	78.0	55.8
2000	29	81.7	57.1
1999	58	79.1	56.4
1998	9	82.4	59.6
1997	2	85.6	60.2
1996	44	81.3	55.5
1995	37	80.1	57.4
1994	31	80.9	57.6
1993	38	80.7	56.7
1992	18	82.1	57.7
1991	20	81.5	58.1
1990	28	82.0	56.9
1989	76	77.8	56.1
1988	42	81.2	55.6
1987	32	81.2	57.3
1986	95	76.5	54.7
1985	74	77.6	56.3
1984	4	86.0	57.9
1983	7	84.3	58.9
1982	59	80.4	55.0
1981	72	78.9	55.2
1980	71	78.5	55.7
1979	5	84.9	58.9
1978	25	82.8	56.2
1977	70	78.8	55.4
1976	66	78.2	56.6
1975	88	78.1	53.6
1974	53	80.3	55.5
1973	82	78.5	54.8
1972	91	76.9	54.5
1971	23	83.0	56.0
1970	40	84.5	52.7
1969	35	81.9	56.1
1968	60	80.3	55.0
1967	12	82.8	57.8
1966	56	81.3	54.3
1965	102	77.1	52.7
1964	68	80.2	54.1
1963	30	81.0	57.8
1962	87	77.6	54.4
1960	63	80.2	54.9
1959	77	78.2	55.6
1958	8	84.8	57.3
1957	36	80.4	57.2
1956	54	80.2	55.5
1955	75	80.8	53.1
1954	90	78.4	53.1
1953	34	79.8	58.2
1952	33	82.2	56.0
1951	84	77.6	55.6
1950	48	79.9	56.4
1949	51	80.8	55.1
1948	96	79.4	51.6
1947	55	82.1	53.6
1946	67	81.1	53.4
1945	52	81.7	54.1
1944	49	82.9	53.3
1943	39	81.6	55.7
1942	101	77.2	53.3
1941	83	79.8	53.4
1940	73	78.5	55.7
1939	27	83.0	55.9
1938	79	79.7	53.8
1937	81	79.5	53.8
1936	45	83.1	53.4
1935	99	76.5	54.1
1934	80	81.4	52.0
1933	112	76.7	51.4
1932	50	82.0	54.0
1931	106	77.7	51.5
1930	115	74.2	53.2
1929	100	79.1	51.4
1928	104	78.9	50.7
1927	118	76.8	48.9
1926	120	77.3	47.8
1925	119	75.3	50.2
1924	97	80.2	50.4
1923	64	82.0	53.0
1922	65	83.7	51.3
1921	107	80.2	48.8
1920	114	76.5	51.1
1919	113	78.0	49.8
1918	109	73.9	55.0
1917	85	81.3	51.7
1916	105	78.8	50.6
1915	110	79.2	49.6
1914	117	76.7	49.6
1913	57	82.9	52.7
1912	92	79.3	52.1
1911	125	75.7	46.1
1910	121	76.5	47.6
1909	103	79.2	50.5
1908	108	78.8	50.2
1907	124	74.4	47.8
1906	111	79.6	49.1
1905	86	81.1	51.4
1904	46	81.1	55.2
1903	89	81.3	50.3
1901	98	80.1	50.5
1900	41	77.8	59.4
1896	122	74.2	48.5
1895	123	76.6	46.0
1894	116	80.7	45.6
1893	126	72.9	44.7

Weather Station Details

Years	Station	Coordinates
1999–2024	San Jose 2	location
1893–1998	San Jose	location