San Rafael September Precipitation Totals

A time series of total precipitation in the month of September in San Rafael, California from 1894–2023.

Rainiest September in San Rafael History

The rainiest September in San Rafael, California history happened in 1904, with 6.12 inches of total precipitation.

Driest September in San Rafael History

There have been 33 times where no rain was recorded in San Rafael, California for the entire month of September. The most recent time this happened was 2021.

San Rafael Average September Precipitation by Year

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Year	Precipitation (inches)
2023	0.04
2022	0.77
2021	0.00
2018	0.00
2017	0.02
2015	0.16
2014	0.34
2012	0.00
2010	0.00
2009	0.31
2008	0.00
2007	0.03
2006	0.00
2005	0.00
2003	0.00
2002	0.00
2001	0.13
2000	0.11
1999	0.08
1998	0.01
1997	0.14
1996	0.00
1995	0.00
1994	0.00
1993	0.00
1992	0.00
1991	0.00
1990	0.13
1989	1.49
1988	0.00
1987	0.00
1986	0.93
1985	0.00
1984	0.09
1980	0.00
1979	0.03
1978	1.77
1977	2.68
1976	0.62
1975	0.00
1974	0.00
1973	0.20
1972	0.68
1971	0.23
1970	0.00
1969	0.09
1968	0.00
1967	0.02
1966	0.06
1965	0.00
1964	0.00
1963	0.00
1961	0.24
1960	0.00
1959	4.45
1958	0.03
1957	1.62
1956	0.14
1955	0.04
1954	0.00
1953	0.00
1952	0.03
1951	0.00
1950	0.00
1949	0.04
1948	0.18
1947	0.00
1904	6.12
1903	0.00
1895	1.74
1894	1.61

Notes

Its possible for precipitation totals to include both rain and melted snowfall
Months with more than 10% missing data are excluded