Oswego, NY: September

30 September 2026: September 2026 averaged 65°F in Oswego, NY, the warmest September since 2024, tied 17th warmest of 101 (with 2016).

September 2026

Mean temperature: 65°F; Warmest since 2024; 17th warmest of 101
Precipitation: 1.65 in; Driest since 2025; 12th driest of 101

A normal September in Oswego, NY (1991 to 2020): a mean temperature of 63.5°F, between 60.4°F and 66.5°F in eight years of ten and 3.72 in of precipitation, between 2.05 in and 5.63 in in eight years of ten.

The mean temperature of every September in Oswego, NY since 1926: 65°F in 2026; the highest is 70.6°F, in 1961.

Normal range, 60.4 to 66.5°F

Every year, ranked, as a table

Every September in Oswego, NY from 1926 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	65	17	71.6	39	58.3	8	1.65	90	0
2025	64.4	24	72.4	23	56.5	22	1.62	91	0
2024	66.7	6	74.1	8	59.2	2	3.45	47	0
2023	65.2	16	72.1	27	58.3	8	1.92	84	0
2022	64.5	21	70.5	60	58.4	7	6.86	3	0
2021	66.1	9	73	20	59.1	4	3.56	45	0
2020	64.3	26	72.1	27	56.6	19	1.86	86	0
2019	63.5	34	71.5	44	55.5	34	3.98	36	0
2018	66.5	8	74	10	58.9	5	2.70	69	0
2017	64.4	24	72.7	21	56	28	2.93	65	0
2016	65	17	73.5	14	56.4	23	4.04	35	0
2015	67	3	74.8	5	59.2	2	4.56	27	0
2014	62.6	52	71.1	52	54.1	59	1.22	97	0
2013	62.1	64	70.9	56	53.3	69	4.90	16	0
2012	63.4	37	71.6	39	55.3	37	5.89	6	0
2011	65.5	13	73.2	17	57.9	13	5.62	9	1
2010	64.1	27	71.7	38	56.6	19	8.64	1	0
2009	60.3	82	69.2	75	51.3	94	3.03	61	0
2008	63.2	43	71.8	34	54.5	50	1.87	85	0
2007	65.6	11	74.5	7	56.6	19	2.91	66	0
2006	60.4	79	67.5	89	53.3	69	4.89	17	0
2005	65.6	11	74	10	57.2	17	4.11	32	0
2004	63.9	31	71.8	34	56	28	3.64	44	0
2003	63.5	34	72.2	25	54.8	45	2.66	71	0
2002	67.1	2	76.8	2	57.5	15	3.68	43	0
2001	63	48	71.6	39	54.3	55	3.70	42	0
2000	62.2	61	71.1	52	53.3	69	3.73	40	0
1999	66.6	7	75.6	4	57.5	15	5.67	8	0
1998	64.6	20	73.4	15	55.9	31	2.07	82	1
1997	61.2	75	69.5	73	53.1	73	5.49	10	1
1996	63.1	46	70.1	68	56.1	26	4.62	26	0
1995	60.2	84	69.2	75	51.3	94	3.27	54	0
1994	61.9	69	69.6	71	54.2	57	3.42	48	0
1993	60.3	82	68.1	84	52.4	82	4.72	22	0
1992	62.1	64	71.1	52	53	76	2.97	63	0
1991	61.6	73	71.6	39	51.6	91	4.80	20	0
1990	62.2	61	70.7	58	53.6	63	3.30	51	0
1989	62.2	61	71.3	49	53.1	73	3.33	50	0
1988	62.1	64	71.2	50	52.9	78	2.65	72	0
1987	62.1	64	69.7	70	54.6	47	5.76	7	1
1986	60.8	77	68.4	82	53.1	73	6.47	5	0
1985	64.5	21	73.7	13	55.3	37	3.16	58	0
1984	60.2	84	69	78	51.5	93	3.80	39	0
1983	64.7	19	74.1	8	55.3	37	3.38	49	0
1982	61.9	69	70.8	57	52.9	78	4.69	24	0
1981	59.9	89	66.1	96	53.6	63	6.61	4	0
1980	62.8	51	71.5	44	54.1	59	3.93	37	0
1979	61.7	72	71.2	50	52.1	85	4.79	21	0
1978	59.7	91	69.2	75	50.3	99	5.03	13	0
1977	62	68	68	85	56.1	26	4.70	23	0
1976	59.6	92	68.9	79	50.2	100	3.29	52	1
1975	58.7	97	65.8	99	51.6	91	7.55	2	0
1974	60	88	68.3	83	51.8	88	3.25	55	0
1973	61.8	71	70.4	62	53.2	72	2.83	67	0
1972	63.1	46	72	29	54.2	57	3.54	46	0
1971	66	10	74	10	58	11	2.33	77	0
1970	64	29	71.9	30	56	28	4.49	28	0
1969	63.2	43	71.9	30	54.4	53	1.84	87	0
1968	65.5	13	73.1	18	57.8	14	5.15	12	0
1967	62.4	57	70.4	62	54.3	55	4.85	19	0
1966	60.2	84	66.8	93	53.6	63	4.29	29	0
1965	63.4	37	71.5	44	55.3	37	4.86	18	0
1964	61.6	73	70.4	62	52.7	81	1.34	95	0
1963	56.2	101	66	98	46.3	101	1.78	88	0
1962	60.4	79	67.3	90	53.9	62	4.29	29	2
1961	70.6	1	77.9	1	62.3	1	1.49	92	2
1960	64.5	21	71.6	39	57.2	17	0.94	100	1
1959	66.9	4	76	3	58.3	8	1.09	98	2
1958	62.5	54	69.6	71	55.2	41	4.91	14	3
1957	62.6	52	70.7	58	54.6	47	4.66	25	0
1956	59.1	95	67.7	88	50.6	98	4.05	34	2
1955	63.2	43	73.1	18	53.4	67	2.26	80	3
1954	60.7	78	67.8	86	53.5	66	2.33	77	0
1953	62.4	57	71.4	47	53.4	67	2.40	74	0
1952	63.4	37	71.9	30	54.8	45	3.71	41	0
1951	60.9	76	68.8	80	53	76	3.18	57	0
1950	58.5	99	65.2	101	51.7	90	2.17	81	0
1949	59.9	89	67	91	52.8	80	2.96	64	0
1948	63.6	33	71.8	34	55.4	35	0.86	101	0
1947	63.4	37	71.8	34	55.1	42	2.35	76	0
1946	63.4	37	72.3	24	54.4	53	4.17	31	0
1945	63.8	32	71.4	47	56.2	25	5.29	11	0
1944	62.3	60	69.5	73	55.1	42	3.21	56	0
1943	60.1	87	67.8	86	52.4	82	1.77	89	0
1942	62.5	54	70.5	60	54.5	50	3.28	53	0
1941	64	29	73.3	16	54.6	47	1.41	94	0
1940	59.5	93	66.6	94	52.4	82	2.38	75	0
1939	63	48	71.9	30	54.1	59	2.07	82	0
1938	58.2	100	65.5	100	51	96	4.91	14	0
1937	60.4	79	68.6	81	52.1	85	0.98	99	0
1936	62.5	54	70.4	62	54.5	50	4.08	33	0
1935	59.3	94	66.9	92	51.8	88	2.27	79	0
1934	65.3	15	72.6	22	58	11	2.98	62	0
1933	63.3	42	70.2	67	56.3	24	1.45	93	0
1932	62.9	50	70.3	66	55.4	35	2.47	73	0
1931	66.9	4	74.8	5	58.9	5	2.73	68	0
1930	64.1	27	72.2	25	55.9	31	3.91	38	0
1929	63.5	34	71.1	52	55.8	33	3.16	58	0
1928	58.7	97	66.4	95	51	96	2.68	70	0
1927	62.4	57	69.8	69	54.9	44	1.25	96	0
1926	59	96	66.1	96	52	87	3.04	60	0

Warmest, coldest, wettest and driest

Warmest
Year	Mean, °F
1961	70.6
2002	67.1
2015	67
1959	66.9
1931	66.9
2024	66.7
1999	66.6
2018	66.5
2021	66.1
1971	66

Coldest
Year	Mean, °F
1963	56.2
1938	58.2
1950	58.5
1975	58.7
1928	58.7
1926	59
1956	59.1
1935	59.3
1940	59.5
1976	59.6

Wettest
Year	Precipitation, in
2010	8.64
1975	7.55
2022	6.86
1981	6.61
1986	6.47
2012	5.89
1987	5.76
1999	5.67
2011	5.62
1997	5.49

Driest
Year	Precipitation, in
1948	0.86
1960	0.94
1937	0.98
1959	1.09
2014	1.22
1927	1.25
1964	1.34
1941	1.41
1933	1.45
1961	1.49

The hottest, coldest and wettest days

Hottest day: 84°F; 2 September 2026
Coldest night: 44°F; 25 September 2026
Wettest day: 0.51 in; 2 September 2026

Every month, season and year

Months

Seasons

Years

Oswego, NY the day's answers

All-time records

Every answer in words

September 2026 brought 1.65 in of precipitation in Oswego, NY, the driest September since 2025, 12th driest of 101.
The hottest day of September 2026 in Oswego, NY: 84°F on Wednesday 2 September 2026.
The coldest night of September 2026 in Oswego, NY: a low of 44°F on Friday 25 September 2026.
The wettest day of September 2026 in Oswego, NY: 0.51 in on Wednesday 2 September 2026.