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Ketchum September Precipitation Totals

A time series of total precipitation in the month of September in Ketchum, Idaho from 1937–2018.

Rainiest September in Ketchum History

The rainiest September in Ketchum, Idaho history happened in 1985, with 4.67 inches of total precipitation.

Driest September in Ketchum History

There have been 4 times where no rain was recorded in Ketchum, Idaho for the entire month of September. The most recent time this happened was 2018.

Ketchum Average September Precipitation by Year

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Year	Precipitation (inches)
2018	0.00
2012	0.03
2010	1.00
2009	0.23
2008	0.53
2007	0.88
2006	0.89
2005	0.63
2004	1.24
2003	0.35
2002	0.35
2001	0.46
2000	3.01
1999	0.00
1998	1.14
1997	0.75
1996	0.58
1995	0.01
1994	0.38
1993	0.16
1992	0.11
1991	2.52
1990	0.59
1989	1.56
1988	0.41
1987	0.00
1986	1.91
1985	4.67
1983	1.16
1982	0.76
1981	0.72
1980	2.35
1979	0.21
1978	3.51
1977	1.55
1976	2.76
1975	0.29
1974	0.06
1973	0.96
1972	1.31
1971	0.78
1970	1.07
1969	0.98
1968	0.95
1967	1.04
1966	1.32
1965	0.86
1964	0.11
1963	1.63
1962	0.72
1961	1.72
1960	0.54
1959	3.05
1958	0.61
1957	0.10
1956	0.18
1955	0.30
1954	0.18
1953	0.19
1952	0.12
1951	0.01
1950	2.02
1949	0.33
1948	2.24
1947	0.28
1946	0.90
1945	0.78
1944	0.30
1943	0.29
1942	0.00
1941	0.47
1940	4.07
1939	1.14
1938	0.32
1937	1.07

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