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Watertown September Precipitation Totals

A time series of total precipitation in the month of September in Watertown, South Dakota from 1897–2023.

Rainiest September in Watertown History

The rainiest September in Watertown, South Dakota history happened in 1921, with 7.22 inches of total precipitation.

Driest September in Watertown History

The driest September in Watertown, South Dakota history happened in 1998, with just 0.06 inches of total precipitation.

Watertown Average September Precipitation by Year

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Year	Precipitation (inches)
2023	2.74
2022	1.02
2021	3.01
2020	1.05
2019	4.15
2018	2.85
2017	5.40
2016	2.06
2015	0.27
2014	0.84
2013	3.12
2012	0.29
2011	0.35
2010	6.06
2009	1.56
2008	1.95
2007	3.07
2006	4.85
2005	3.54
2004	5.80
2003	1.49
2002	1.37
2001	2.33
2000	1.10
1999	2.22
1998	0.06
1995	3.75
1994	1.86
1993	2.99
1992	2.16
1991	2.09
1990	1.03
1989	1.37
1988	2.67
1987	1.82
1986	3.35
1985	5.35
1984	1.29
1983	2.53
1982	2.44
1981	0.31
1980	0.50
1979	0.53
1978	2.32
1977	5.66
1976	1.62
1975	2.28
1974	0.22
1973	3.81
1972	0.32
1971	1.63
1970	1.84
1969	0.60
1968	2.71
1967	0.95
1966	1.37
1965	4.36
1964	0.77
1963	1.39
1962	1.84
1961	2.31
1960	1.59
1959	1.20
1958	1.28
1957	1.98
1956	0.70
1955	0.94
1954	2.42
1953	0.12
1952	0.47
1951	0.40
1950	1.37
1949	2.55
1948	3.11
1947	2.80
1946	3.86
1945	2.41
1944	2.28
1943	2.51
1942	5.20
1941	1.54
1940	1.19
1939	0.73
1938	2.55
1937	1.44
1936	0.30
1935	0.17
1934	4.53
1933	2.49
1932	1.66
1931	1.16
1930	1.28
1928	3.22
1927	0.97
1926	2.99
1925	1.44
1924	1.52
1923	1.67
1922	0.67
1921	7.22
1920	1.28
1919	0.53
1918	0.35
1917	3.28
1916	1.25
1915	5.49
1914	2.64
1913	2.28
1912	2.61
1911	1.85
1910	1.20
1909	0.50
1908	1.82
1907	0.96
1906	1.25
1905	2.17
1904	1.87
1903	4.52
1902	0.13
1900	4.74
1899	0.45
1898	1.53
1897	1.43

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