Average September Temperature in San Rafael by Year

This page contains a list of the average monthly high and low temperatures in San Rafael, California for the month of September each year between 1894 and 2023. It is based on NOAA data.

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What Was the Hottest September Ever in San Rafael?

1958 was the warmest September in the history of San Rafael, California. The average daily high temperature was 88.2 °F, and the average low was 56.3 °F.

What Was the Coldest September Ever in San Rafael?

1894 was the coolest September in the history of San Rafael, California. The average daily high temperature was 81.0 °F, and the average low was 39.4 °F.

* click column headers to sort

Year	Rank	High (°F)	Low (°F)
2023	38	79.1	54.3
2021	14	82.2	54.8
2018	49	78.7	52.3
2017	3	83.5	58.8
2015	6	83.6	56.0
2014	9	80.9	57.0
2012	58	78.7	50.0
2010	31	79.9	54.4
2009	8	82.8	55.3
2008	30	80.4	54.0
2007	52	75.5	54.4
2006	55	77.1	52.0
2005	62	74.2	51.6
2003	13	81.2	55.8
2002	36	80.7	53.0
2001	57	75.9	52.9
2000	25	79.8	55.4
1999	37	79.4	54.0
1998	29	78.1	56.4
1997	22	82.0	53.9
1996	54	77.2	51.9
1995	34	79.1	54.8
1994	40	78.4	54.3
1992	45	80.2	51.4
1991	32	80.2	53.7
1990	12	80.9	56.2
1989	61	75.1	53.0
1988	39	81.4	51.4
1987	41	79.2	53.1
1986	63	71.1	52.5
1985	59	75.4	53.1
1980	16	83.0	53.8
1979	2	86.5	56.3
1978	4	84.6	56.3
1977	44	77.4	54.2
1976	27	80.3	54.4
1975	51	78.0	52.3
1974	43	81.1	50.5
1973	23	80.3	55.3
1972	47	78.7	52.4
1971	7	84.6	54.6
1969	17	83.4	53.3
1967	5	83.4	56.6
1966	10	81.9	55.3
1965	60	78.2	50.2
1964	33	82.5	51.4
1961	18	83.3	53.0
1960	53	79.7	49.7
1959	24	81.0	54.4
1958	1	88.2	56.3
1957	15	82.2	54.8
1956	21	83.4	52.7
1955	50	82.6	47.9
1954	42	80.5	51.6
1953	19	80.5	55.7
1952	11	83.4	53.7
1951	46	78.8	52.6
1950	26	81.0	54.0
1949	35	80.6	53.2
1948	56	78.5	50.5
1947	20	84.5	51.7
1904	28	80.9	53.8
1903	48	81.1	50.0
1895	64	74.4	48.8
1894	65	81.0	39.4

Weather Station Details

Years	Station	Coordinates
1894–2024	San Rafael Civic Center	location