Average September Temperature in St. Maries by Year

This page contains a list of the average monthly high and low temperatures in St. Maries, Idaho for the month of September each year between 1897 and 2021. It is based on NOAA data.

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What Was the Hottest September Ever in St. Maries?

1990 was the warmest September in the history of St. Maries, Idaho. The average daily high temperature was 88.3 °F, and the average low was 47.0 °F.

What Was the Coldest September Ever in St. Maries?

1926 was the coolest September in the history of St. Maries, Idaho. The average daily high temperature was 66.4 °F, and the average low was 33.9 °F.

* click column headers to sort

Year	Rank	High (°F)	Low (°F)
2021	48	73.3	43.7
2019	56	70.5	45.5
2018	70	72.6	41.9
2016	61	71.8	44.0
2015	69	72.0	42.5
2014	22	77.0	44.4
2013	12	74.7	49.8
2012	19	79.3	42.2
2011	10	80.3	44.6
2010	51	70.9	45.4
2009	14	79.5	44.5
2008	50	74.5	41.9
2006	38	75.7	42.9
2005	85	71.4	40.7
2004	71	69.1	45.1
2002	67	71.5	43.2
2001	24	76.2	44.3
2000	92	67.0	43.6
1999	87	72.4	39.2
1998	6	78.5	48.0
1997	33	72.1	46.8
1996	102	67.4	41.8
1995	36	73.4	45.4
1994	20	77.2	44.4
1993	73	72.9	40.9
1992	86	69.9	41.8
1990	1	88.3	47.0
1989	44	74.3	43.6
1988	17	75.8	46.4
1987	21	81.1	40.4
1986	100	65.0	44.4
1985	113	62.0	39.3
1984	112	65.6	36.5
1983	106	67.4	40.8
1982	79	70.9	42.7
1981	41	75.7	42.5
1980	65	74.0	41.1
1979	5	82.1	44.5
1978	80	70.7	42.8
1977	93	67.8	42.7
1976	8	82.4	43.7
1975	63	77.9	37.6
1974	29	80.1	39.4
1973	34	75.4	43.4
1972	90	70.6	40.5
1971	105	69.7	38.6
1970	109	68.0	38.0
1969	37	74.6	44.2
1968	54	71.8	44.4
1967	4	84.6	44.4
1966	9	81.8	44.2
1965	108	67.8	39.4
1964	91	70.6	40.5
1963	2	84.7	46.5
1962	27	78.4	41.2
1961	98	71.3	38.5
1960	32	78.5	40.5
1959	78	69.2	44.4
1958	47	75.2	41.9
1957	30	80.6	38.6
1956	60	77.1	38.7
1955	83	75.8	37.6
1954	68	74.9	39.7
1953	26	81.2	38.4
1952	15	82.2	40.8
1951	57	75.9	40.1
1947	52	74.7	41.6
1946	77	74.0	39.6
1945	110	64.5	40.8
1944	13	80.7	43.3
1943	23	81.4	39.9
1942	18	80.3	41.2
1941	97	65.9	44.0
1940	7	76.4	50.0
1939	45	76.6	40.8
1938	3	83.3	46.7
1937	16	80.1	42.8
1936	55	76.3	39.8
1935	35	81.0	37.8
1934	88	71.6	39.5
1933	96	69.7	40.5
1932	64	77.8	37.6
1931	82	72.2	41.3
1930	28	75.3	44.1
1929	99	70.6	38.8
1928	62	77.1	38.5
1927	94	66.7	43.9
1926	114	66.4	33.9
1925	49	75.0	41.7
1924	46	76.9	40.4
1923	39	77.0	41.6
1922	84	69.3	42.7
1921	111	66.4	38.6
1920	75	71.6	42.1
1919	66	75.1	39.9
1918	11	82.2	42.5
1917	25	77.4	42.7
1916	95	70.3	40.1
1915	104	69.3	39.4
1911	107	66.7	40.8
1910	72	72.5	41.5
1909	40	74.3	43.9
1908	42	76.7	41.3
1907	81	71.2	42.3
1906	43	77.2	40.8
1905	58	73.2	42.7
1904	53	78.0	38.2
1903	101	69.1	40.2
1902	89	73.1	38.1
1901	103	67.9	41.3
1900	76	71.9	41.9
1899	31	76.4	42.8
1898	59	74.8	41.1
1897	74	70.8	42.9

Weather Station Details

Years	Station	Coordinates
1897–2024	Saint Maries	location