Twin Falls September Precipitation Totals

A time series of total precipitation in the month of September in Twin Falls, Idaho from 1925–2023.

Rainiest September in Twin Falls History

The rainiest September in Twin Falls, Idaho history happened in 1940, with 2.94 inches of total precipitation.

Driest September in Twin Falls History

There have been 11 times where no rain was recorded in Twin Falls, Idaho for the entire month of September. The most recent time this happened was 2018.

Twin Falls Average September Precipitation by Year

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Year	Precipitation (inches)
2023	0.51
2022	0.20
2021	0.29
2020	0.01
2019	0.91
2018	0.00
2017	0.69
2016	2.32
2015	0.44
2014	0.79
2013	0.92
2012	0.05
2011	0.12
2010	0.58
2009	0.17
2008	0.13
2007	0.57
2006	0.29
2005	0.15
2004	0.43
2003	0.09
2002	0.64
2001	0.98
2000	0.24
1999	0.01
1998	1.12
1997	0.77
1996	0.07
1995	0.16
1994	0.46
1993	0.05
1992	0.19
1991	1.16
1990	0.00
1989	0.75
1988	0.57
1987	0.00
1986	0.90
1985	0.82
1984	0.51
1983	0.95
1982	1.46
1981	0.35
1980	1.73
1979	0.02
1978	2.41
1977	0.78
1976	0.98
1975	0.03
1974	0.00
1973	0.86
1972	1.27
1971	0.69
1970	1.31
1969	0.35
1968	0.29
1967	0.28
1966	0.14
1965	0.42
1964	0.21
1963	0.88
1962	0.89
1960	0.14
1958	0.11
1957	0.10
1956	0.39
1955	0.22
1954	0.00
1953	0.05
1952	0.00
1951	0.00
1950	0.77
1949	0.00
1948	2.11
1947	0.28
1946	0.90
1945	0.42
1944	0.67
1943	0.00
1942	0.17
1941	1.48
1940	2.94
1939	0.05
1938	0.03
1937	0.01
1936	0.31
1934	0.01
1933	0.28
1932	0.00
1931	0.36
1929	0.29
1928	0.00
1927	0.78
1926	0.11
1925	0.88

Notes

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