New Hampshire September Temperature by Year

This page is a list of the average statewide temperature in the month of September in New Hampshire for each year from 1895–2023. It is a statewide average over the entire territory of the state, based on data from the NOAA.

State:

Month:

What Was the Hottest September in New Hampshire History?

1961 was the warmest September in New Hampshire history. Statewide, the average daily high temperature was 76.1 °F, and the average low was 51.8 °F.

What Was the Coldest September in New Hampshire History?

1956 was the coolest September in New Hampshire history. Statewide, the average daily high temperature was 64.0 °F, and the average low was 41.3 °F.

Click column headers to sort

Year	Rank	High (°F)	Low (°F)
2023	4	71.5	51.8
2022	40	68.3	47.8
2021	10	71.0	50.0
2020	29	71.4	45.7
2019	54	69.6	45.4
2018	7	71.1	51.2
2017	3	73.4	50.9
2016	10	72.9	48.1
2015	2	75.5	50.0
2014	45	70.0	45.6
2013	61	69.2	45.7
2012	54	69.3	45.6
2011	8	70.9	51.0
2010	13	70.9	49.3
2009	85	68.1	43.8
2008	31	69.2	47.5
2007	22	71.8	46.1
2006	64	67.7	46.0
2005	9	72.9	48.9
2004	29	70.4	46.7
2003	26	69.7	47.6
2002	5	73.5	48.8
2001	32	71.1	45.4
2000	80	68.0	44.3
1999	5	72.6	49.9
1998	26	70.7	46.5
1997	80	67.2	45.2
1996	34	68.3	48.0
1995	119	66.8	41.2
1994	96	65.3	45.6
1993	78	66.6	46.0
1992	66	68.5	45.1
1991	108	66.7	42.6
1990	71	67.6	45.8
1989	54	69.1	45.9
1988	104	67.2	42.8
1987	84	66.2	46.0
1986	115	65.2	43.3
1985	54	69.3	45.7
1984	111	67.6	41.3
1983	15	73.2	46.2
1982	54	68.5	46.4
1981	91	65.5	45.9
1980	74	68.6	44.4
1979	85	68.8	43.2
1978	126	66.7	39.8
1977	95	65.4	45.7
1976	104	66.9	43.0
1975	109	64.8	44.4
1974	88	66.3	45.4
1973	89	67.2	44.4
1972	74	68.6	44.4
1971	14	70.5	49.2
1970	61	67.8	47.1
1969	54	68.2	46.8
1968	22	71.3	46.8
1967	77	69.4	43.5
1966	123	65.6	41.5
1965	66	68.5	45.1
1964	120	66.8	41.0
1963	124	66.8	40.1
1962	114	65.6	43.3
1961	1	76.1	51.8
1960	63	69.0	45.6
1959	16	71.7	47.6
1958	72	67.8	45.4
1957	34	71.3	45.0
1956	129	64.0	41.3
1955	91	68.5	42.9
1954	109	64.5	44.6
1953	46	70.6	44.8
1952	32	70.7	45.9
1951	66	68.6	44.9
1950	126	64.3	42.0
1949	96	65.8	45.0
1948	42	72.9	43.0
1947	42	70.7	45.1
1946	25	72.1	45.6
1945	21	70.7	47.6
1944	40	68.7	47.3
1943	104	67.0	42.9
1942	46	70.2	45.2
1941	46	72.7	42.8
1940	102	66.6	43.6
1939	66	69.5	44.0
1938	120	65.3	42.5
1937	74	68.8	44.2
1936	64	68.4	45.4
1935	116	65.5	42.9
1934	12	69.8	50.7
1933	50	68.0	47.1
1932	50	69.6	45.6
1931	17	70.4	48.6
1930	20	71.6	47.0
1929	38	70.5	45.7
1928	122	64.9	42.6
1927	80	68.6	43.9
1926	96	67.1	43.6
1925	80	67.3	45.2
1924	118	66.1	42.2
1923	38	69.4	46.8
1922	50	69.9	45.3
1921	22	71.9	46.1
1920	42	69.0	46.8
1919	78	67.4	45.2
1918	128	63.1	42.6
1917	125	66.6	40.0
1916	85	67.8	44.2
1915	18	70.8	48.0
1914	91	68.8	42.6
1913	107	67.7	42.1
1912	102	65.5	44.7
1911	111	66.0	43.1
1910	89	67.6	44.0
1909	91	67.4	44.1
1908	18	73.8	45.1
1907	72	65.6	47.6
1906	34	71.9	44.6
1905	100	65.7	44.7
1904	116	65.3	43.0
1903	54	70.7	44.4
1902	66	67.0	46.4
1901	50	69.5	45.7
1900	34	70.3	46.2
1899	111	65.8	43.2
1898	26	70.7	46.5
1897	99	67.7	42.9
1896	100	65.6	44.7
1895	46	71.0	44.4