Klamath Falls, OR: September

30 September 2026: September 2026 averaged 54.5°F in Klamath Falls, OR, the coldest September since 2005, 7th coldest of 121.

September 2026

Mean temperature: 54.5°F; Coldest since 2005; 7th coldest of 121
Precipitation: 0.83 in; Wettest since 2023; 23rd wettest of 124

A normal September in Klamath Falls, OR (1991 to 2020): a mean temperature of 59.2°F, between 55.3°F and 62.3°F in eight years of ten and 0.12 in of precipitation, between 0.00 in and 0.81 in in eight years of ten.

The mean temperature of every September in Klamath Falls, OR since 1898: 54.5°F in 2026; the lowest is 53°F, in 1927.

Normal range, 55.3 to 62.3°F

Every year, ranked, as a table

Every September in Klamath Falls, OR from 1898 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	54.5	115	71.9	101	37.1	119	0.83	23	0
2025	59.7	60	77.1	54	42.3	62	0.75	27	0
2024	61.4	30	81.2	16	41.7	69	0.28	70	2
2023	55.6	101	73.1	91	38.2	106	1.04	17	0
2022	61.1	37	80.8	18	41.3	74	0.72	28	0
2021	58	76	78.6	36	37.5	116	0.39	56	0
2020	61.9	23	82.9	5	40.8	84	trace	107	0
2019	55.4	104	71.9	101	38.8	103	1.87	7	0
2018	55.9	98	77	57	34.9	122	0.24	74	0
2017	59.1	69	75.9	68	42.2	64	0.09	96	0
2016	55.9	98	75.3	77	36.5	121	0.12	91	0
2015	57.5	84	77.1	54	37.8	111	0.08	98	0
2014	60.7	48	78.4	38	43	51	0.95	19	0
2013	56.8	91	72.8	93	40.8	84	0.17	83	0
2012	61	41	82.2	11	39.8	94	0.00	116	0
2011	61.1	37	81.2	16	41.1	78	trace	107	0
2010	57.1	90	76.4	62	37.9	109	0.05	103	0
2009	60.3	52	79.6	25	41	82	trace	107	0
2008	59.5	65	78.6	36	40.4	92	trace	107	0
2007	54.9	111	71.7	103	38.2	106	0.32	67	0
2006	57.5	84	76	67	38.9	102	0.06	99	0
2005	54.3	116	71.4	107	37.2	118	0.24	74	0
2004	55.1	108	72.5	98	37.7	113	0.02	106	0
2003	60.2	55	78.7	34	41.6	70	0.61	33	0
2002	57.4	86	75.6	74	39.2	100	trace	107	0
2001	57.4	86	77	57	37.8	111	0.83	23	0
2000	55.4	104	71.7	103	39.1	101	0.81	25	0
1999							0.00	116	18
1997	61.2	36	78.7	34	43.7	40	0.59	34	1
1996	59.3	68	76.1	65	42.4	61	0.57	37	0
1995	63.8	8	81.7	13	45.9	18	trace	107	0
1994	62.9	14	82.3	9	43.7	40	0.39	56	3
1993	62.1	19	80.5	19	43.8	38	0.24	74	2
1992	61	41	79.7	24	42.6	59	0.64	31	2
1991	66.2	2	83.2	4	49.2	1	0.00	116	2
1990	63.3	12	79.8	23	46.8	14	0.21	79	0
1989	60.4	51	75.9	68	44.8	25	1.44	12	0
1988	60.8	45	78.8	32	43	51	0.11	94	2
1987	62.9	14	81.4	15	44.5	33	0.00	116	1
1986	53.4	119	65.9	121	41.1	78	2.45	2	1
1985	54.3	116	66.7	120	42	67	2.36	3	1
1984	58.4	73	74	89	42.8	56	0.50	47	1
1983	60	58	76.4	62	43.6	43	0.52	43	3
1981	61.1	37	77.7	47	44.6	28	0.42	52	1
1980	60.2	55	76.8	60	43.6	43	0.59	34	0
1979	62.6	16	80.5	19	44.6	28	0.23	77	0
1978							0.45	51	6
1977	57.7	81	71.5	106	43.8	38	2.13	5	0
1976	61.9	23	77.5	49	46.2	16	0.18	81	0
1975	65.5	4	82.6	6	48.3	7	0.37	60	0
1974	65.4	5	84.3	2	46.4	15	0.00	116	0
1973	59.4	66	77.7	47	41.2	77	0.51	46	0
1972	56.4	95	73.1	91	39.6	97	0.33	66	0
1971	55.3	106	73.6	90	37.1	119	0.88	20	1
1970	56	97	74.3	85	37.7	113	trace	107	0
1969	61	41	78.4	38	43.6	43	0.41	54	0
1968	59.6	63	78.2	44	40.9	83	0.09	96	2
1967	63.5	10	82.5	7	44.6	28	0.04	104	0
1966	60.6	50	77.2	52	44	36	0.17	83	0
1965	55.5	102	72.7	94	38.3	105	trace	107	0
1964	56.4	95	74.4	82	38.4	104	0.12	91	0
1963	62.2	18	79.1	28	45.3	23	0.04	104	0
1962	61.5	28	78.9	31	44.1	35	0.55	38	0
1961	55.7	100	70.7	110	40.6	89	0.86	21	0
1960	61.7	27	79	30	44.4	34	0.28	70	0
1959	55.5	102	69.3	114	41.6	70	0.84	22	0
1958	57.4	86	74.2	86	40.6	89	0.55	38	0
1957	60.7	48	78.4	38	42.7	58	2.74	1	1
1956	58.8	71	74.2	86	43.5	47	0.81	25	0
1955	59.6	63	74.5	81	44.6	28	0.52	43	0
1954	56.8	91	71.4	107	42.3	62	0.17	83	0
1953	63.7	9	78.3	41	49.2	1	0.53	40	0
1952					48.7	5	1.41	14	7
1951	63.5	10	78	46	49.1	3	0.38	59	0
1950	60.8	45	74.4	82	47.2	12	0.17	83	0
1949	61.3	34	76.8	60	45.7	20	0.30	68	0
1948	57.8	80	72.4	99	43.2	49	1.28	15	0
1947	61.1	37	78.3	41	44	36	0.53	40	0
1946	58.6	72	75.6	74	41.6	70	0.30	68	0
1945	60	58	77.2	52	42.8	56	0.17	83	0
1944	62.3	17	79.2	27	45.3	23	0.36	63	0
1943	66.4	1	83.6	3	49.1	3	0.39	56	0
1942	62.1	19	79.4	26	44.7	27	trace	107	0
1941	54.6	113	68.8	115	40.5	91	0.50	47	0
1940	58.1	75	70.5	111	45.6	21	2.29	4	0
1939	61.8	26	77.4	51	46.2	16	0.50	47	0
1938	61.9	23	75.9	68	48	8	0.37	60	0
1937	62.1	19	78.3	41	45.9	18	0.34	65	0
1936	61	41	77.1	54	44.8	25	0.28	70	0
1935	63	13	78.8	32	47.3	11	0.15	89	0
1934	61.4	30	79.1	28	43.7	40	0.28	70	0
1933	57.6	82	74.1	88	41.1	78	0.06	99	0
1932	64.8	6	81.7	13	47.9	9	0.00	116	0
1931	57.9	77	72.7	94	43	51	1.13	16	0
1930	57.6	82	71.6	105	43.6	43	1.43	13	0
1929	56.8	91	72.7	94	40.8	84	0.00	116	0
1928	59.7	60	78.2	44	41.1	78	0.36	63	0
1927	53	121	68	118	37.9	109	0.59	34	0
1926	54.2	118	71	109	37.5	116	0.06	99	0
1925	55	110	68.4	116	41.6	70	1.97	6	0
1924	58.4	73	74.7	79	42.2	64	0.20	80	0
1923	61.5	28	75.9	68	47.2	12	1.46	11	0
1922	61.3	34	79.9	22	43.1	50	0.40	55	1
1921	57.4	86	74.6	80	40.1	93	0.06	99	0
1920	57.9	77	72.7	94	42.9	55	0.17	83	1
1919	59.7	60	77.5	49	41.8	68	0.66	30	0
1918	62	22	76.2	64	47.8	10	1.85	8	0
1917	60.3	52	77	57	43.5	47	0.52	43	0
1916	61.4	30	80.2	21	42.5	60	0.00	116	0
1915	57.9	77	74.4	82	41.3	74	0.12	91	0
1914	55.3	106	69.9	112	40.7	88	0.68	29	3
1913	60.1	57	75.5	76	44.6	28	0.14	90	0
1912	54.8	112	68.3	117	41.3	74	1.04	17	0
1911	53.2	120	67	119	39.5	98	0.53	40	0
1910	55.1	108	72.1	100	38.1	108	0.63	32	1
1909	59.4	66	75.8	72	43	51	0.37	60	0
1908	59.1	69	76.1	65	42.2	64	0.18	81	1
1907	56.7	94	75.7	73	37.6	115	0.42	52	1
1906	61.4	30	81.9	12	40.8	84	0.23	77	0
1905	60.8	45	82.3	9	39.3	99	0.50	47	0
1902	64.1	7	88.4	1	39.7	96	0.00	116	0
1901	54.6	113	69.4	113	39.8	94	1.63	10	0
1899	65.6	3	82.4	8	48.7	5	0.10	95	0
1898	60.3	52	75.1	78	45.5	22	1.82	9	0

Warmest, coldest, wettest and driest

Warmest
Year	Mean, °F
1943	66.4
1991	66.2
1899	65.6
1975	65.5
1974	65.4
1932	64.8
1902	64.1
1995	63.8
1953	63.7
1967	63.5
More years share the last value

Coldest
Year	Mean, °F
1927	53
1911	53.2
1986	53.4
1926	54.2
2005	54.3
1985	54.3
2026	54.5
1941	54.6
1901	54.6
1912	54.8

Wettest
Year	Precipitation, in
1957	2.74
1986	2.45
1985	2.36
1940	2.29
1977	2.13
1925	1.97
2019	1.87
1918	1.85
1898	1.82
1901	1.63

Driest
Year	Precipitation, in
2012	0.00
1999	0.00
1991	0.00
1987	0.00
1974	0.00
1932	0.00
1929	0.00
1916	0.00
1902	0.00
2020	trace
More years share the last value

The hottest, coldest and wettest days

Hottest day: 86°F; 10 September 2026
Coldest night: 31°F; 28 September 2026, 15 September 2026, 7 September 2026
Wettest day: 0.29 in; 3 September 2026

Every month, season and year

Months

Seasons

Years

Klamath Falls, OR the day's answers

All-time records

Every answer in words

September 2026 brought 0.83 in of precipitation in Klamath Falls, OR, the wettest September since 2023, tied 23rd wettest of 124 (with 2001).
The hottest day of September 2026 in Klamath Falls, OR: 86°F on Thursday 10 September 2026.
The coldest night of September 2026 in Klamath Falls, OR: a low of 31°F on Monday 28 September 2026, Tuesday 15 September 2026 and Monday 7 September 2026.
The wettest day of September 2026 in Klamath Falls, OR: 0.29 in on Thursday 3 September 2026.