Average October Temperature in Ketchum by Year

This page contains a list of the average monthly high and low temperatures in Ketchum, Idaho for the month of October each year between 1937 and 2021. It is based on NOAA data.

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What Was the Hottest October Ever in Ketchum?

1988 was the warmest October in the history of Ketchum, Idaho. The average daily high temperature was 67.0 °F, and the average low was 30.7 °F.

What Was the Coldest October Ever in Ketchum?

2019 was the coolest October in the history of Ketchum, Idaho. The average daily high temperature was 47.1 °F, and the average low was 18.7 °F.

* click column headers to sort

Year	Rank	High (°F)	Low (°F)
2021	35	54.8	29.0
2020	12	59.6	28.4
2019	71	47.1	18.7
2018	40	54.3	28.4
2017	59	53.9	24.5
2016	30	53.8	30.8
2013	43	54.5	27.7
2012	53	56.0	23.9
2011	11	56.3	32.0
2010	22	57.6	28.8
2009	68	48.5	26.1
2007	44	53.6	28.0
2006	37	56.1	27.4
2005	23	58.7	27.6
2004	25	56.1	29.6
2003	2	62.9	31.6
2002	56	55.1	24.4
2001	28	58.4	26.6
1999	6	62.8	26.7
1998	39	56.3	26.5
1997	41	54.4	28.1
1996	51	56.0	24.6
1994	52	54.8	25.3
1992	10	61.2	27.3
1991	49	58.9	21.8
1989	48	54.8	26.0
1988	1	67.0	30.7
1987	3	65.4	25.6
1985	62	54.8	22.6
1984	69	50.3	22.5
1983	24	59.0	27.3
1982	54	53.8	25.8
1981	65	52.4	23.7
1980	36	59.5	24.3
1979	18	58.7	28.4
1978	14	62.1	25.7
1972	19	58.7	28.2
1971	38	57.8	25.4
1970	67	54.9	20.7
1969	66	53.5	22.1
1968	33	60.0	24.2
1967	27	58.9	26.5
1966	55	60.2	19.3
1965	9	67.6	21.6
1964	20	65.3	21.2
1963	5	64.7	25.3
1962	8	63.4	25.9
1961	57	56.8	22.0
1960	47	60.3	20.7
1959	26	62.1	23.6
1958	31	65.4	19.1
1957	45	57.2	24.3
1956	63	55.3	21.9
1955	42	61.6	20.7
1954	60	60.5	17.7
1953	17	63.3	24.2
1952	4	70.6	20.0
1951	61	54.7	23.5
1950	7	61.9	27.5
1949	64	56.3	20.2
1948	32	61.4	22.8
1947	15	60.1	27.6
1946	70	50.2	21.2
1945	13	64.9	23.0
1943	58	58.9	19.6
1942	46	62.8	18.4
1941	50	58.3	22.3
1940	29	58.9	25.7
1939	34	59.7	24.3
1938	21	58.4	28.0
1937	16	64.4	23.1

Weather Station Details

Years	Station	Coordinates
1973–2024	Ketchum	location
1937–1972	Sun Valley	location