Average September Temperature in Saint John by Year

This page contains a list of the average monthly high and low temperatures in Saint John, New Brunswick for the month of September each year between 1871 and 2023. It is based on NOAA data.

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What Was the Hottest September Ever in Saint John?

1999 was the warmest September in the history of Saint John, New Brunswick. The average daily high temperature was 21.6 °C, and the average low was 10.4 °C.

What Was the Coldest September Ever in Saint John?

1978 was the coolest September in the history of Saint John, New Brunswick. The average daily high temperature was 16.0 °C, and the average low was 5.3 °C.

* click column headers to sort

Year	Rank	High (°C)	Low (°C)
2023	6	21.0	9.4
2022	22	19.9	8.8
2021	9	20.4	9.5
2020	84	19.1	6.7
2019	135	18.2	5.6
2018	66	19.8	6.8
2017	4	21.1	9.9
2016	37	20.1	7.9
2015	7	21.8	8.4
2014	103	19.5	5.9
2013	78	18.5	7.6
2011	33	19.8	8.3
2010	23	19.2	9.5
2009	140	18.2	5.6
2008	91	18.4	7.3
2007	73	19.2	7.1
2006	94	19.0	6.6
2005	29	20.1	8.2
2004	128	17.9	6.3
2003	27	21.0	7.5
2002	43	19.3	8.2
2001	58	19.8	7.1
2000	131	17.9	6.3
1999	1	21.6	10.4
1998	74	17.9	8.4
1997	113	17.3	7.8
1996	92	17.6	8.1
1995	147	17.5	4.4
1994	99	17.7	7.9
1992	88	17.8	8.0
1991	129	16.9	7.2
1990	95	17.5	8.1
1989	87	18.1	7.7
1988	137	16.7	7.1
1987	60	17.8	9.1
1986	143	16.4	6.6
1985	36	19.8	8.2
1984	114	17.5	7.5
1983	19	20.0	8.7
1982	77	17.6	8.6
1981	104	17.5	7.9
1980	133	17.1	7.0
1979	98	17.9	7.7
1978	149	16.0	5.3
1977	139	16.6	7.1
1976	110	16.9	8.3
1975	86	17.7	8.1
1974	119	16.8	7.8
1973	130	17.3	6.9
1972	82	18.1	7.9
1971	31	19.3	8.9
1970	115	16.7	8.2
1969	65	17.8	8.9
1968	30	19.5	8.8
1967	89	18.0	7.7
1966	145	17.1	5.7
1965	142	17.7	5.9
1964	146	16.8	5.6
1963	148	15.9	5.5
1962	136	16.4	7.5
1961	2	20.9	10.3
1960	57	18.9	8.1
1959	50	18.2	9.0
1958	101	17.2	8.2
1957	59	18.1	8.8
1956	144	16.1	6.6
1955	125	16.8	7.5
1954	111	17.0	8.2
1953	28	18.7	9.7
1952	72	18.3	8.1
1949	124	18.4	6.0
1948	134	19.1	4.9
1947	141	19.1	4.6
1946	5	19.9	10.6
1945	32	17.9	10.2
1944	10	18.7	10.8
1943	26	18.7	9.9
1942	24	18.7	9.9
1941	71	17.6	8.7
1940	51	17.4	9.8
1939	56	17.6	9.3
1938	47	17.8	9.7
1937	20	18.3	10.4
1936	96	16.4	9.2
1935	90	16.7	9.1
1934	3	19.2	12.0
1933	42	17.7	9.9
1932	11	19.0	10.5
1931	69	16.8	9.8
1930	15	18.4	10.7
1929	34	18.2	9.8
1928	107	16.2	9.0
1927	52	17.5	9.7
1926	100	16.8	8.7
1925	122	15.9	8.6
1924	97	16.7	8.9
1923	83	16.9	8.9
1922	112	16.4	8.8
1921	17	19.1	9.9
1920	46	17.6	9.9
1919	75	16.7	9.6
1918	76	16.7	9.6
1917	102	17.4	8.0
1916	61	17.4	9.3
1915	35	18.1	9.9
1914	49	17.2	10.2
1913	108	16.0	9.3
1912	93	16.3	9.3
1911	116	15.5	9.4
1910	45	17.1	10.4
1909	38	16.9	11.1
1908	14	18.3	10.9
1907	63	16.4	10.4
1906	54	17.0	10.2
1905	81	15.9	10.1
1904	117	15.7	9.1
1903	13	18.3	10.9
1902	12	18.3	11.0
1901	16	18.0	11.1
1900	44	17.7	9.9
1899	67	17.3	9.3
1898	68	17.5	9.1
1897	85	17.2	8.7
1896	80	16.8	9.1
1895	55	17.8	9.3
1894	40	17.9	9.8
1893	121	15.9	8.6
1892	64	17.4	9.3
1891	8	19.3	10.8
1890	21	18.4	10.3
1889	18	18.4	10.5
1888	127	16.0	8.3
1887	120	16.5	8.1
1886	123	16.8	7.7
1885	138	17.0	6.8
1884	70	17.8	8.5
1883	106	17.3	8.0
1882	79	16.4	9.7
1881	25	17.9	10.6
1880	48	17.0	10.5
1879	105	15.5	9.9
1878	39	17.4	10.5
1877	53	16.5	10.7
1876	109	16.3	8.9
1875	126	16.0	8.3
1874	41	18.2	9.5
1873	132	15.9	8.2
1872	62	16.4	10.4
1871	118	15.6	9.1

Weather Station Details

Years	Station	Coordinates
2012–2024	Saint John	location
1947–2012	Saint John A	location
1871–1946	Saint John	location