Portland Downtown, OR: September

30 September 2026: September 2026 averaged 62.6°F in Portland Downtown, OR, the coldest September since 1996, tied 55th coldest of 152 (with 1984).

September 2026

Mean temperature: 62.6°F; Coldest since 1996; 55th coldest of 152
Precipitation: 1.08 in; Driest since 2025; 46th driest of 153

A normal September in Portland Downtown, OR (1991 to 2020): a mean temperature of 65.3°F, between 62.9°F and 67°F in eight years of ten and 1.33 in of precipitation, between 0.17 in and 3.00 in in eight years of ten.

The mean temperature of every September in Portland Downtown, OR since 1874: 62.6°F in 2026; the lowest is 57.2°F, in 1895.

Normal range, 62.9 to 67°F

Every year, ranked, as a table

Every September in Portland Downtown, OR from 1872 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	62.6	97	70.7	121	54.5	52	1.08	108	0
2025	67.1	15	76.6	29	57.5	6	0.90	115	0
2024	65.7	31	75.2	44	56.1	22	1.74	67	0
2023	64.2	54	73.1	76	55.2	35	1.52	78	0
2022	67.9	4	78	12	57.8	4	0.21	141	0
2021	65.2	42	75.2	44	55.2	35	4.36	7	0
2020	66.8	19	75.6	39	58	1	1.82	60	0
2019	62.9	87	70.2	126	55.6	30	4.40	6	0
2018	63.3	75	73.5	66	53.1	93	0.90	115	0
2017	66.4	23	76.1	31	56.7	14	2.53	43	0
2016	63.1	78	72.7	85	53.4	83	1.26	93	0
2015	62.9	87	72.6	89	53.2	89	0.87	117	0
2014	67.3	11	77.2	21	57.4	9	1.05	109	0
2013	63.9	60	71.5	109	56.4	17	6.85	1	0
2012	65.1	45	76.3	30	53.9	63	0.01	150	1
2011	67.8	7	77.9	14	57.4	9	0.70	123	2
2010	64.2	54	72.8	82	55.7	27	2.94	30	2
2009	65.7	31	75.9	33	55.6	30	1.63	73	1
2008	66	26	78.3	9	53.7	72	0.32	136	3
2007	63.1	78	73.3	70	53.1	93			3
2006	65.5	36	77.2	21	53.8	65	1.12	105	1
2005	63.1	78	72.8	82	53	99	1.37	84	2
2004	62.7	95	70.7	121	54.8	46	1.76	63	1
2003	67	17	77.6	16	56.4	17	1.50	79	1
2002	64.8	48	75.8	35	53.8	65	1.31	92	0
2001	65.3	40	76	32	54.6	50	0.66	125	0
2000	63.6	69	73.3	70	53.8	65	1.76	63	0
1999	65.2	42	77.3	19	53.1	93	0.19	142	0
1998	67	17	78.4	8	55.7	27	1.02	110	0
1997	65.7	31	75.2	44	56.1	22	2.84	33	0
1996	61.3	128	70.5	125	52.1	119	3.22	21	0
1995	66.7	21	75.5	41	57.9	2	2.14	49	0
1994	66.8	19	76.9	26	56.7	14	1.63	73	0
1993	65.8	30	77.6	16	54.1	59	trace	151	0
1992	63.3	75	73.2	72	53.4	83	1.33	89	0
1991	67.7	8	79.3	5	56.2	21	0.10	145	0
1990	67.1	15	76.8	28	57.5	6	0.52	132	0
1989	65.9	28	78.2	10	53.5	82	1.13	102	0
1988	64.3	52	75.8	35	52.9	101	1.66	70	0
1987	66.1	24	77	25	55.1	41	0.36	135	0
1986	60.7	131	68.5	144	52.9	101	2.96	29	0
1985	60.1	136	68.9	138	51.3	129	2.71	38	0
1984	62.6	97	72.3	93	52.8	105	1.99	54	0
1983	61.7	115	72.1	99	51.3	129	0.47	133	0
1982	63	84	73.2	72	52.8	105	3.33	20	0
1981	64.1	57	75.3	43	52.9	101	2.76	37	0
1980	63.9	60	74.6	52	53.3	86	2.06	52	0
1978	61.7	115	69.8	130	53.6	76	3.03	27	0
1977	61.7	115	70	129	53.4	83	4.69	5	0
1976	64.9	47	74.6	52	55.2	35	0.93	113	0
1975	67.2	12	79.6	4	54.7	47	trace	151	0
1974	69	1	82.3	1	55.8	25	0.15	143	0
1973	64.3	52	74.9	49	53.6	76	3.76	13	0
1972	61.8	114	71.7	105	51.8	123	3.69	14	0
1971	62.3	105	72.3	93	52.4	114	4.16	9	0
1970	61.7	115	70.7	121	52.6	110	1.83	59	0
1969	64.1	57	73.1	76	55.1	41	4.87	4	0
1968	63.9	60	73.2	72	54.6	50	2.87	32	0
1967	68.7	3	80.4	2	57	12	0.79	120	0
1966	65.9	28	75.7	38	56	24	1.76	63	0
1965	62.8	91	73	79	52.6	110	0.04	149	0
1964	62.2	109	71.4	113	52.9	101	1.54	77	0
1963	67.9	4	77.8	15	57.9	2	1.12	105	0
1962	65	46	74.2	59	55.8	25	1.66	70	0
1961	61.6	120	71.3	115	51.9	120	0.80	119	0
1960	63.8	66	73.1	76	54.5	52	1.35	86	0
1959	61.5	122	69.5	133	53.6	76	2.78	36	0
1958	64.7	50	74.5	57	55	44	1.34	87	0
1957	68.9	2	80.1	3	57.7	5	0.59	129	0
1956	63.9	60	73.5	66	54.2	57	1.24	95	0
1955	63.4	72	73	79	53.7	72	3.22	21	0
1954	62.2	109	70.7	121	53.7	72	1.14	101	0
1953	65.3	40	75.4	42	55.2	35	1.77	62	0
1952	67.2	12	79	6	55.3	33	0.30	138	0
1951	66.1	24	77.1	24	55.1	41	2.89	31	0
1950	64.2	54	74.5	57	53.8	65	1.66	70	0
1949	65.7	31	75.9	33	55.6	30	1.23	96	0
1948	63	84	72.7	85	53.2	89	3.86	12	0
1947	65.2	42	75.2	44	55.3	33	0.96	111	0
1946	63.1	78	71.9	100	54.2	57	1.40	82	0
1945	62.5	99	71.7	105	53.3	86	3.98	11	0
1944	66.6	22	76.9	26	56.4	17	2.40	45	0
1943	67.9	4	79	6	56.7	14	0.09	147	0
1942	65.5	36	75.8	35	55.2	35	0.09	147	0
1941	61.4	126	68.9	138	53.8	65	3.58	15	0
1940	65.6	35	73.7	64	57.5	6	3.56	17	0
1939	65.4	39	75.1	48	55.7	27	0.60	128	0
1938	67.5	9	77.6	16	57.4	9	1.38	83	0
1937	63.9	60	72.5	90	55.2	35	2.06	52	0
1936	63.5	71	73.2	72	53.7	72	1.41	81	0
1935	67.2	12	78.1	11	56.3	20	0.86	118	0
1934	62.8	91	72.3	93	53.2	89	1.32	90	0
1933	59.7	144	67.4	146	51.9	120	2.97	28	0
1932	65.5	36	77.2	21	53.9	63	0.11	144	0
1931	62.8	91	71.5	109	54	61	2.10	51	0
1930	63.7	67	72.4	91	55	44	1.79	61	0
1929	64.8	48	75.6	39	54	61	0.31	137	0
1928	61.5	122	70.2	126	52.8	105	0.65	127	0
1927	61.9	113	69.5	133	54.3	55	5.52	2	0
1926	61.6	120	70.9	118	52.2	116	2.14	49	0
1925	62.9	87	71.3	115	54.5	52	1.50	79	0
1924	63.4	72	73.7	64	53.1	93	1.93	56	0
1923	64.5	51	74.7	50	54.3	55	0.59	129	0
1922	63.9	60	73.9	60	53.8	65	1.90	58	0
1921	60.5	135	69.7	132	51.3	129	3.08	25	0
1920	61.2	129	69.1	137	53.3	86	4.16	9	0
1919	62.5	99	71.4	113	53.6	76	3.18	23	0
1918	67.5	9	78	12	56.9	13	0.66	125	0
1917	63.1	78	71.5	109	54.7	47	1.96	55	0
1916	62.5	99	72.4	91	52.6	110	0.71	121	0
1915	62.3	105	71.7	105	53	99	0.53	131	0
1914	59.4	145	67.3	147	51.4	126	3.10	24	0
1913	62.3	105	72.7	85	51.9	120	2.58	41	0
1912	62.3	105	72.3	93	52.2	116	1.18	98	0
1911	58.4	148	65.9	150	50.9	137	5.19	3	0
1910	60	137	69.2	136	50.9	137	1.15	100	0
1909	63.3	75	73.8	61	52.7	108	0.95	112	0
1908	60	137	70.9	118	49.2	151	0.23	140	0
1907	62.7	95	71.9	100	53.6	76	1.73	68	0
1906	61.7	115	71.7	105	51.8	123	2.20	46	0
1905	62.1	111	71	117	53.1	93	2.79	34	0
1904	63.6	69	74.7	50	52.5	113	0.28	139	0
1903	61.5	122	71.9	100	51	136	1.13	102	0
1902	62	112	72.8	82	51.2	133	1.75	66	0
1901	58.3	149	67	148	49.6	145	3.57	16	0
1900	60	137	68.6	143	51.4	126	1.93	56	0
1899	64.1	57	74.6	52	53.6	76	1.37	84	0
1898	62.8	91	71.5	109	54.1	59	2.69	39	0
1897	60	137	68.7	142	51.3	129	2.79	34	0
1896	61	130	70.9	118	51.1	134	0.47	133	0
1895	57.2	152	65.3	151	49.1	152	1.16	99	0
1894	59.9	143	68.3	145	51.6	125	1.32	90	0
1893	57.9	150	65.2	152	50.6	139	2.56	42	0
1892	62.9	87	72.7	85	53.1	93	1.63	73	0
1891	60.7	131	70.1	128	51.4	126	2.17	48	0
1890	62.4	104	74.6	52	50	143	0.10	145	1
1889	61.4	126	73.4	69	49.3	147	1.61	76	0
1888	66	26	77.3	19	54.7	47	1.13	102	0
1887	60.6	133	71.9	100	49.3	147	3.06	26	0
1886	63.4	72	74.6	52	52.2	116	1.19	97	0
1885	62.5	99	73.8	61	51.1	134	2.48	44	0
1884	57.9	150	66.5	149	49.3	147	4.25	8	0
1883	62.5	99	72.3	93	52.7	108	0.67	124	0
1882	61.5	122	72.3	93	50.6	139	0.91	114	0
1881	60	137	69.4	135	50.5	141	2.64	40	0
1880	60	137	69.8	130	50.3	142	1.34	87	0
1879	63.7	67	73.5	66	53.8	65	2.18	47	0
1878	59.2	147	68.8	140	49.5	146	3.54	18	0
1877	59.4	145	68.8	140	49.9	144	3.36	19	0
1876	63	84	72.9	81	53.2	89	1.09	107	0
1875	63.1	78	73.8	61	52.3	115	0.71	121	0
1874	60.6	133	71.8	104	49.3	147	1.70	69	0
1873							0.00	153	30
1872							1.26	93	30

Warmest, coldest, wettest and driest

Warmest
Year	Mean, °F
1974	69
1957	68.9
1967	68.7
2022	67.9
1963	67.9
1943	67.9
2011	67.8
1991	67.7
1938	67.5
1918	67.5

Coldest
Year	Mean, °F
1895	57.2
1893	57.9
1884	57.9
1901	58.3
1911	58.4
1878	59.2
1914	59.4
1877	59.4
1933	59.7
1894	59.9

Wettest
Year	Precipitation, in
2013	6.85
1927	5.52
1911	5.19
1969	4.87
1977	4.69
2019	4.40
2021	4.36
1884	4.25
1971	4.16
1920	4.16

Driest
Year	Precipitation, in
1873	0.00
1993	trace
1975	trace
2012	0.01
1965	0.04
1943	0.09
1942	0.09
1991	0.10
1890	0.10
1932	0.11

The hottest, coldest and wettest days

Hottest day: 86°F; 17 September 2026
Coldest night: 46°F; 26 September 2026
Wettest day: 0.30 in; 6 September 2026

Every month, season and year

Months

Seasons

Years

Portland Downtown, OR the day's answers

All-time records

Every answer in words

September 2026 brought 1.08 in of precipitation in Portland Downtown, OR, the driest September since 2025, 46th driest of 153.
The hottest day of September 2026 in Portland Downtown, OR: 86°F on Thursday 17 September 2026.
The coldest night of September 2026 in Portland Downtown, OR: a low of 46°F on Saturday 26 September 2026.
The wettest day of September 2026 in Portland Downtown, OR: 0.30 in on Sunday 6 September 2026.