Portland, ME: September

30 September 2026: September 2026 averaged 60.7°F in Portland, ME, the warmest September since 2025, tied 54th warmest of 153 (with 1985).

September 2026

Mean temperature: 60.7°F; Warmest since 2025; 54th warmest of 153
Precipitation: 5.12 in; Wettest since 2018; 26th wettest of 156

A normal September in Portland, ME (1991 to 2020): a mean temperature of 61°F, between 58.7°F and 63.6°F in eight years of ten and 3.27 in of precipitation, between 0.87 in and 6.75 in in eight years of ten.

The mean temperature of every September in Portland, ME since 1874: 60.7°F in 2026; the highest is 65.3°F, in 2015.

Normal range, 58.7 to 63.6°F

Every year, ranked, as a table

Every September in Portland, ME from 1871 to 2026, ranked: the mean temperature, the mean high and the mean low from the warmest, the precipitation from the wettest; a year missing more than a tenth of its days is not ranked.

Year	Mean, °F	Rank	High, °F	Rank	Low, °F	Rank	Precipitation, in	Rank	Days missing
2026	60.7	54	69.4	72	52	51	5.12	26	0
2025	62.5	25	72.9	12	52.1	47	1.88	118	0
2024	62.1	29	72.3	19	51.9	55	1.93	115	0
2023	64.1	6	72.8	14	55.4	8	4.91	28	0
2022	60.3	60	69.5	65	51	71	4.20	43	0
2021	63.3	14	71.7	27	54.8	13	4.28	41	0
2020	63.4	12	73.3	8	53.4	28	0.68	149	0
2019	61.1	44	71.5	30	50.6	85	0.42	154	0
2018	63.6	10	72.3	19	54.8	13	5.78	17	0
2017	64.6	3	74.3	4	54.9	11	2.23	105	0
2016	63.8	9	74	5	53.6	23	0.86	143	0
2015	65.3	1	76.1	1	54.5	16	7.06	9	0
2014	60.1	67	70.4	48	49.8	102	0.87	142	0
2013	59.8	75	70.3	49	49.2	112	6.72	11	0
2012	59.9	71	69	80	50.8	76	3.80	54	0
2011	62.8	20	71.6	28	54	20	3.30	65	0
2010	63.4	12	72.4	18	54.4	17	2.30	103	0
2009	59.1	93	69.5	65	48.6	117	1.38	134	0
2008	60.3	60	69.5	65	51.2	65	10.84	1	0
2007	61.6	33	72	23	51.2	65	3.22	68	0
2006	60.3	60	69.7	61	50.9	74	3.57	58	0
2005	63.6	10	73.8	7	53.4	28	2.13	109	0
2004	60.9	49	70.6	43	51.1	67	3.24	67	0
2003	61.4	37	70.6	43	52.2	46	4.68	30	0
2002	63.1	18	73.3	8	52.8	39	3.58	57	0
2001	61	45	71.3	33	50.7	82	4.14	44	0
2000	59.8	75	69.8	60	49.9	100	2.46	97	0
1999	63.3	14	73	10	53.6	23	8.80	4	0
1998	61.2	41	71.5	30	50.9	74	3.02	74	0
1997	58.7	107	68.4	86	49	113	2.68	87	0
1996	59.7	79	67.4	108	52.1	47	3.55	59	0
1995	56.4	144	67.3	111	45.6	143	2.40	98	0
1994	58.4	116	67.4	108	49.4	107	6.60	12	0
1993	59.6	81	68.4	86	50.8	76	4.10	45	0
1992	58.9	95	68.4	86	49.3	109	3.11	73	0
1991	58.1	120	68.2	94	48.1	121	5.44	21	0
1990	59.8	75	68.5	85	51	71	3.12	71	0
1989	60.5	56	71	38	50	96	4.48	36	0
1988	59.4	85	70.3	49	48.5	118	1.50	130	0
1987	59.6	81	69.5	65	49.6	104	4.64	32	0
1986	57.3	131	67.2	112	47.5	129	2.64	92	0
1985	60.7	54	70.9	39	50.4	90	2.97	76	0
1984	57.8	124	69.1	78	46.4	140	0.84	144	0
1983	62.9	19	75.1	2	50.8	76	1.35	136	0
1982	59.2	89	68.3	91	50	96	1.90	116	0
1981	58.6	110	66.7	122	50.4	90	6.14	15	0
1980	61.5	34	71.9	25	51.1	67	3.00	75	0
1979	57.3	131	68.4	86	46.3	141	3.28	66	0
1978	57.8	124	70.2	54	45.3	145	0.59	151	0
1977	57.6	129	67	118	48.2	120	4.63	33	0
1976	57.3	131	68.7	82	45.8	142	1.86	119	0
1975	57.2	136	66.6	123	47.8	124	4.34	38	0
1974	58.8	102	67.1	117	50.5	87	5.43	22	0
1973	58.3	117	69.5	65	47.2	132	2.23	105	0
1972	58.7	107	69.4	72	48	123	4.31	39	0
1971	61.3	39	71.2	35	51.3	61	3.55	59	0
1970	60.9	49	69.2	77	52.6	42	4.49	35	0
1969	60.8	52	69.7	61	52	51	5.28	25	0
1968	61.7	32	72.6	16	50.8	76	1.40	133	0
1967	59.9	71	70.9	39	48.9	115	2.68	87	0
1966	56.2	146	67.6	105	44.7	147	3.84	52	0
1965	58	122	69	80	47	136	2.31	102	0
1964	55.5	150	68.3	91	42.8	153	1.02	140	0
1963	54.8	152	66.4	124	43.2	152	2.29	104	0
1962	56.1	147	67.2	112	45	146	2.53	95	0
1961	64.1	6	75.1	2	53.1	35	4.21	42	0
1960	58.8	102	70.3	49	47.3	131	5.01	27	0
1959	60.9	49	72.2	22	49.6	104	3.19	70	0
1958	58.6	110	70	57	47.2	132	2.77	83	0
1957	60.3	60	72.9	12	47.7	128	1.02	140	0
1956	55	151	65.5	140	44.6	148	3.61	56	0
1955	57.1	138	69.6	64	44.5	150	1.66	125	0
1954	56.4	144	67.2	112	45.5	144	9.81	2	0
1953	58.9	95	70.6	43	47.1	135	2.60	93	0
1952	59.4	85	72	23	46.8	137	2.67	90	0
1951	59.2	89	70.3	49	48.1	121	2.38	99	0
1950	54.5	153	65.7	137	43.3	151	1.82	120	0
1949	57.2	136	67.8	99	46.6	138	6.27	14	0
1948	60.3	60	74	5	46.5	139	0.30	156	0
1947	59.5	83	71.1	37	47.8	124	1.73	124	0
1946	60.8	52	71.4	32	50.2	94	2.90	79	0
1945	60.5	56	71.6	28	49.5	106	3.84	52	0
1944	59.5	83	69.3	75	49.7	103	6.79	10	0
1943	57.3	131	67.5	107	47.2	132	1.64	126	0
1942	58.9	95	69.4	72	48.4	119	1.28	138	0
1941	58.8	102	73	10	44.6	148	1.42	132	0
1940	59.9	71	67.8	99	52.1	47	3.92	50	0
1939	60.1	67	68.3	91	51.9	55	1.62	128	0
1938	58.7	107	66.1	129	51.3	61	6.47	13	0
1937	61	45	69.1	78	52.9	38	3.99	49	0
1936	59.3	87	66.4	124	52.3	44	2.02	113	0
1935	59.3	87	67	118	51.6	59	4.58	34	0
1934	62.8	20	68.6	83	57	2	5.77	18	0
1933	61	45	67.7	101	54.2	19	6.07	16	0
1932	62.2	28	70.1	55	54.3	18	5.42	23	0
1931	63.3	14	71.2	35	55.3	10	2.95	77	0
1930	64.7	2	72.7	15	56.6	3	1.55	129	0
1929	60.5	56	68.6	83	52.5	43	2.09	110	0
1928	57	140	64.7	149	49.3	109	3.88	51	0
1927	61.5	34	69.9	59	53.1	35	2.14	108	0
1926	58.5	115	66.2	127	50.8	76	1.89	117	0
1925	58.6	110	66.2	127	51	71	1.75	123	0
1924	57.7	127	65.3	142	50.1	95	4.09	46	0
1923	60.3	60	67	118	53.6	23	0.83	145	0
1922	60	69	68	95	52	51	1.80	121	0
1921	63.3	14	71.8	26	54.8	13	1.64	126	0
1920	61	45	68	95	54	20	8.16	6	0
1919	57.8	124	65	147	50.7	82	3.68	55	0
1918	56.7	141	64.1	151	49.3	109	5.58	19	0
1917	56.5	143	65.1	144	47.8	124	0.32	155	0
1916	58.8	102	67	118	50.6	85	1.47	131	0
1915	61.5	34	69.5	65	53.4	28	0.62	150	0
1914	61.3	39	70.6	43	52	51	0.73	146	0
1913	58.3	117	66.1	129	50.5	87	3.46	64	0
1912	58.1	120	65.7	137	50.5	87	2.91	78	0
1911	57.9	123	65.8	135	49.9	100	2.84	82	0
1910	58.6	110	66	133	51.1	67	2.89	80	0
1909	58.9	95	66.4	124	51.3	61	4.68	30	0
1908	62.5	25	71.3	33	53.8	22	0.69	148	0
1907	58.9	95	65.6	139	52.1	47	7.81	7	0
1906	59.8	75	68	95	51.5	60	0.58	152	0
1905	58.3	117	64.8	148	51.9	55	5.35	24	0
1904	57.3	131	65.2	143	49.4	107	3.49	61	0
1903	61.2	41	70	57	52.3	44	2.06	112	0
1902	58.9	95	65.1	144	52.8	39	4.08	47	0
1901	61.8	30	70.1	55	53.5	27	2.18	107	0
1900	61.4	37	69.3	75	53.4	28	2.56	94	0
1899	57.6	129	65.1	144	50	96	4.47	37	0
1898	61.2	41	69.7	61	52.7	41	3.48	63	0
1897	59	94	67.7	101	50.3	92	2.34	100	0
1896	57.7	127	64.6	150	50.8	76	9.57	3	0
1895	61.8	30	70.5	47	53	37	1.79	122	0
1894	60.3	60	67.4	108	53.2	34	2.76	84	0
1893	55.7	149	63.7	152	47.8	124	2.33	101	0
1892	59.2	89	67.7	101	50.7	82	2.89	80	0
1891	62.8	20	70.7	42	54.9	11	1.94	114	0
1890	59.7	79	66.1	129	53.3	33	4.88	29	0
1889	59.9	71	66.1	129	53.6	23	2.49	96	0
1888	55.8	148	62.7	153	49	113	8.22	5	0
1887	57.1	138	65.4	141	48.7	116	0.70	147	0
1886	58.8	102	67.2	112	50.3	92	5.56	20	0
1885	56.7	141	65.8	135	47.5	129	1.37	135	0
1884	64	8	72.3	19	55.7	6	0.56	153	0
1883	59.2	89	67.2	112	51.1	67	2.68	87	0
1882	62.3	27	68.4	86	56.1	4	7.58	8	0
1881	64.4	4	70.8	41	58	1	2.75	85	0
1880	62.6	24	69.5	65	55.7	6	3.20	69	0
1879	60.5	56	67.6	105	53.4	28	2.67	90	0
1878	62.8	20	70.3	49	55.4	8	1.34	137	0
1877	64.2	5	72.5	17	55.8	5	1.11	139	0
1876	58.6	110	65.9	134	51.3	61	4.29	40	0
1875	58.9	95	67.7	101	50	96	3.49	61	0
1874	60	69	68	95	51.9	55	2.73	86	0
1873							4.03	48	30
1872							3.12	71	30
1871							2.08	111	30

Warmest, coldest, wettest and driest

Warmest
Year	Mean, °F
2015	65.3
1930	64.7
2017	64.6
1881	64.4
1877	64.2
2023	64.1
1961	64.1
1884	64
2016	63.8
2018	63.6
More years share the last value

Coldest
Year	Mean, °F
1950	54.5
1963	54.8
1956	55
1964	55.5
1893	55.7
1888	55.8
1962	56.1
1966	56.2
1995	56.4
1954	56.4

Wettest
Year	Precipitation, in
2008	10.84
1954	9.81
1896	9.57
1999	8.80
1888	8.22
1920	8.16
1907	7.81
1882	7.58
2015	7.06
1944	6.79

Driest
Year	Precipitation, in
1948	0.30
1917	0.32
2019	0.42
1884	0.56
1906	0.58
1978	0.59
1915	0.62
2020	0.68
1908	0.69
1887	0.70

The hottest, coldest and wettest days

Hottest day: 85°F; 10 September 2026
Coldest night: 40°F; 20 September 2026
Wettest day: 1.88 in; 27 September 2026

Every month, season and year

Months

Seasons

Years

Portland, ME the day's answers

All-time records

Every answer in words

September 2026 brought 5.12 in of precipitation in Portland, ME, the wettest September since 2018, 26th wettest of 156.
The hottest day of September 2026 in Portland, ME: 85°F on Thursday 10 September 2026.
The coldest night of September 2026 in Portland, ME: a low of 40°F on Sunday 20 September 2026.
The wettest day of September 2026 in Portland, ME: 1.88 in on Sunday 27 September 2026.