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Sioux Falls September Precipitation Totals

A time series of total precipitation in the month of September in Sioux Falls, South Dakota from 1932–2023.

Rainiest September in Sioux Falls History

The rainiest September in Sioux Falls, South Dakota history happened in 1986, with 9.26 inches of total precipitation.

Driest September in Sioux Falls History

The driest September in Sioux Falls, South Dakota history happened in 2011, with just 0.20 inches of total precipitation.

Sioux Falls Average September Precipitation by Year

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Year	Precipitation (inches)
2023	0.51
2022	1.94
2021	3.21
2020	0.42
2019	4.50
2018	7.32
2017	1.62
2016	7.55
2015	3.24
2014	2.28
2013	0.77
2012	1.14
2011	0.20
2010	4.46
2009	1.21
2008	1.78
2007	2.27
2006	3.88
2005	4.76
2004	5.12
2003	4.74
2002	1.39
2001	2.25
2000	1.34
1999	0.84
1998	1.19
1997	1.59
1996	2.82
1995	1.86
1994	2.36
1993	1.88
1992	3.06
1991	3.95
1990	0.47
1989	3.38
1988	4.39
1987	2.05
1986	9.26
1985	3.34
1984	1.62
1983	1.92
1982	3.49
1981	0.50
1980	0.79
1979	4.03
1978	2.45
1977	5.63
1976	0.76
1975	1.35
1974	0.58
1973	5.61
1972	1.75
1971	3.23
1970	3.14
1969	2.41
1968	4.01
1967	0.87
1966	6.34
1965	4.91
1964	4.06
1963	2.40
1962	3.58
1961	2.36
1960	2.21
1959	4.62
1958	2.11
1957	2.66
1956	0.29
1955	0.72
1954	4.33
1953	2.51
1952	0.47
1951	3.40
1950	3.75
1949	3.90
1948	2.97
1947	2.82
1946	5.21
1945	2.17
1944	1.85
1943	0.55
1941	1.70
1940	1.27
1939	1.12
1938	5.89
1937	1.48
1936	1.05
1935	1.77
1934	3.93
1933	3.56
1932	2.58

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