Average September Temperature in Trenton by Year

This page contains a list of the average monthly high and low temperatures in Trenton, New Jersey for the month of September each year between 1893 and 2023. It is based on NOAA data.

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What Was the Hottest September Ever in Trenton?

1961 was the warmest September in the history of Trenton, New Jersey. The average daily high temperature was 81.6 °F, and the average low was 64.1 °F.

What Was the Coldest September Ever in Trenton?

1984 was the coolest September in the history of Trenton, New Jersey. The average daily high temperature was 74.3 °F, and the average low was 49.3 °F.

* click column headers to sort

Year	Rank	High (°F)	Low (°F)
2023	45	76.6	59.2
2022	56	77.2	57.8
2021	38	77.5	58.9
2020	82	76.0	56.7
2019	29	79.7	58.3
2018	6	78.4	63.7
2017	24	78.6	59.8
2016	11	81.2	60.0
2015	4	81.9	61.1
2014	54	77.8	57.2
2013	110	75.8	53.9
2012	66	76.5	57.9
2011	15	77.8	62.2
2010	8	81.7	60.0
2009	99	74.0	56.8
2008	34	77.8	59.3
2007	27	80.8	57.3
2006	101	74.2	56.3
2005	10	82.1	59.3
2004	49	77.4	58.3
2003	74	74.8	58.6
2002	43	78.7	57.2
2001	107	76.0	54.2
2000	121	72.9	54.2
1999	70	75.8	58.0
1998	31	81.2	56.3
1997	116	74.6	54.0
1996	77	75.2	58.0
1995	90	75.4	56.4
1994	111	76.3	53.2
1993	91	76.6	55.1
1992	93	76.3	54.9
1991	100	77.9	52.9
1990	112	74.2	54.9
1989	84	76.2	56.2
1988	123	73.9	53.0
1987	94	75.6	55.6
1986	114	74.0	54.8
1985	72	79.6	54.0
1984	130	74.3	49.3
1983	44	80.9	54.9
1982	97	75.5	55.5
1981	64	76.3	58.3
1980	46	79.0	56.8
1979	95	75.2	55.9
1978	109	76.3	53.5
1977	58	74.9	59.9
1976	83	75.5	57.0
1975	119	72.1	56.2
1974	85	74.9	57.4
1973	30	78.4	59.5
1972	37	76.6	59.9
1971	18	76.3	63.4
1970	14	79.5	61.3
1969	60	75.6	59.1
1968	22	78.7	59.9
1967	102	74.5	56.0
1966	96	73.0	58.0
1965	41	76.9	59.3
1964	68	77.3	56.9
1963	127	71.9	53.3
1962	122	72.0	55.0
1961	1	81.6	64.1
1960	76	74.8	58.5
1959	13	80.2	61.0
1958	86	75.7	56.5
1957	28	77.4	60.6
1956	117	72.8	55.7
1955	81	75.0	57.8
1954	69	75.4	58.6
1953	42	78.1	58.0
1952	48	77.5	58.2
1951	71	77.1	56.6
1950	125	69.9	56.3
1949	118	72.9	55.6
1948	55	77.5	57.5
1947	62	76.0	58.6
1946	25	79.0	59.2
1945	21	77.4	61.4
1944	47	76.0	59.7
1943	92	75.5	55.8
1942	61	76.5	58.2
1941	32	80.0	57.2
1940	108	74.3	55.5
1939	63	77.2	57.3
1938	113	73.4	55.5
1937	115	73.8	54.8
1936	53	76.3	58.9
1935	120	73.2	54.9
1934	39	76.3	60.0
1933	26	77.3	60.7
1932	51	77.6	57.6
1931	5	80.8	61.9
1930	9	80.2	61.3
1929	50	77.6	57.9
1928	124	70.9	55.7
1927	73	76.9	56.6
1926	106	73.0	57.2
1925	33	77.5	59.6
1924	126	71.8	54.4
1923	52	76.1	59.1
1922	67	77.2	57.1
1921	12	79.7	61.6
1920	65	76.5	57.9
1919	88	75.2	56.8
1918	128	72.1	53.0
1917	129	71.0	53.0
1916	87	76.5	55.7
1915	20	78.9	59.9
1914	105	76.3	54.0
1913	103	74.2	56.3
1912	36	79.0	57.5
1910	16	81.0	58.8
1909	98	74.0	56.8
1908	89	75.6	56.2
1907	57	75.4	59.5
1906	19	78.8	60.2
1905	59	76.0	58.8
1904	80	75.3	57.6
1903	79	74.3	58.6
1902	75	74.0	59.3
1901	35	75.9	60.9
1900	7	77.7	63.9
1899	78	76.5	56.7
1898	3	80.8	62.4
1897	23	78.4	60.1
1896	40	76.8	59.4
1895	2	83.8	61.7
1894	17	78.7	61.0
1893	104	75.3	55.1

Weather Station Details

Years	Station	Coordinates
1999–2024	Trenton Mercer County Airport	location
1977–1998	Trenton State College	location
1913–1976	Trenton	location
1865–1913	Trenton 2	location