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Rapid City September Precipitation Totals

A time series of total precipitation in the month of September in Rapid City, South Dakota from 1948–2023.

Rainiest September in Rapid City History

The rainiest September in Rapid City, South Dakota history happened in 2014, with 3.17 inches of total precipitation.

Driest September in Rapid City History

The driest September in Rapid City, South Dakota history happened in 1975, with just 0.03 inches of total precipitation.

Rapid City Average September Precipitation by Year

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Year	Precipitation (inches)
2023	0.99
2022	0.39
2021	0.71
2020	1.11
2019	2.69
2018	1.95
2017	1.14
2016	0.84
2015	0.25
2014	3.17
2013	1.18
2012	0.14
2011	0.75
2010	1.51
2009	1.90
2008	0.87
2007	0.83
2006	2.00
2005	0.57
2004	2.04
2003	1.37
2002	2.45
2001	0.91
2000	0.45
1999	0.85
1998	1.50
1997	0.78
1996	1.55
1995	0.86
1994	0.27
1993	1.46
1992	0.42
1991	0.59
1990	2.44
1989	3.09
1988	0.56
1987	0.68
1986	3.14
1985	1.57
1984	0.74
1983	0.33
1982	2.69
1981	0.16
1980	0.48
1979	0.07
1978	0.18
1977	2.86
1976	0.28
1975	0.03
1974	0.88
1973	1.44
1972	0.24
1971	2.32
1970	1.57
1969	0.35
1968	0.89
1967	2.10
1966	2.84
1965	1.46
1964	0.69
1963	1.21
1962	0.67
1961	0.98
1960	0.68
1959	2.37
1958	0.03
1957	0.69
1956	0.30
1955	3.08
1954	0.20
1953	0.37
1952	0.21
1951	1.46
1950	2.79
1949	1.05
1948	0.59

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