Oswego, NY: December

31 December 2025: December 2025 averaged 28.8°F in Oswego, NY, the coldest December since 2017 (2019 excluded: 21 of 31 days missing), 36th coldest of 93.

December 2025

Mean temperature: 28.8°F; Coldest since 2017; 36th coldest of 93
Precipitation: 3.80 in; Wettest since 2023; 41st wettest of 99

A normal December in Oswego, NY (1991 to 2020): a mean temperature of 31.1°F, between 26.9°F and 36.8°F in eight years of ten and 3.94 in of precipitation, between 2.35 in and 4.87 in in eight years of ten.

The mean temperature of every December in Oswego, NY since 1926: 28.8°F in 2025; the lowest is 16.2°F, in 1989.

Normal range, 26.9 to 36.8°F

Every year, ranked, as a table

Every December in Oswego, NY from 1926 to 2025, 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
2025	28.8	58	34.8	58	22.7	60	3.80	41	0
2024	33.5	17	38.5	26	28.5	14	2.85	73	0
2023	40.1	2	44.6	2	35.6	2	3.96	34	0
2022	34.2	14	39.3	18	29.2	10	2.10	89	0
2021	38.3	3	43.9	4	32.8	3	2.42	83	0
2020	35.1	10	40.1	15	30.2	7	3.31	54	0
2019							4.25	25	21
2018	31.8	32	37.6	34	26	33	4.03	30	0
2017	26.5	74	31.8	76	21.2	71	4.78	14	0
2016	31.1	39	36.5	45	25.7	36	4.00	33	0
2015	41.9	1	47.2	1	36.7	1	4.01	32	0
2014	33.4	18	37.8	32	28.9	11	3.84	40	0
2013	28.7	59	34.9	56	22.5	66	3.11	66	0
2012	35.4	9	40.4	11	30.4	6			0
2011	35.1	10	41.6	9	28.6	12	3.71	46	0
2010	27.1	68	31.6	79	22.7	60	4.92	12	0
2009	29.6	53	34.7	60	24.5	46	4.04	29	0
2008	28.2	63	34.5	62	21.8	69	5.50	5	0
2007	29.4	54	34.1	64	24.6	45	4.98	11	0
2006	37	4	42.1	8	31.9	4	4.43	23	0
2005	27	70	31	82	23	59	4.45	22	0
2004	28.9	57	35.1	55	22.6	63	4.61	16	1
2003	31.2	37	36.8	40	25.5	39	4.86	13	0
2002	29.4	54	34.6	61	24.2	49	3.37	52	0
2001	36.9	5	42.2	7	31.5	5	2.28	87	0
2000	23.6	87	29.3	91	18	86	3.90	38	0
1999	33	23	38.7	24	27.2	24	2.37	84	0
1998	36.8	6	44.3	3	29.4	9	1.71	94	0
1997	31.9	31	37	38	26.8	27	3.26	55	0
1996	34.5	13	39.4	17	29.7	8	4.58	17	0
1995	24.8	79	30	89	19.9	78	3.90	38	1
1994	33.2	20	39.2	19	27.2	24	2.29	86	0
1993	28.5	60	34.3	63	22.7	60	3.94	36	0
1992	31	42	36.8	40	25.1	43	3.65	48	1
1991	31.1	39	37.8	32	24.3	48	3.76	42	1
1990	33.3	19	40.3	12	26.4	31	6.26	2	1
1989	16.2	93	23.7	95	8.6	95	3.26	55	0
1988	28.5	60	36.2	47	20.9	73	3.18	60	0
1987	33.2	20	38.1	29	28.2	17	2.99	69	0
1986	32.5	27	37	38	28	19	3.16	63	0
1985	25.9	75	30.9	83	20.8	74	4.42	24	0
1984	34.6	12	41.4	10	28	19	4.46	21	1
1983	24.7	82	30.1	86	19.3	81	5.26	6	0
1982	36.2	7	43.9	4	28.2	17	2.78	76	1
1981	29.7	50	34.1	64	25.3	41	2.69	77	0
1980	22.5	90	30.7	84	14.4	92	4.62	15	0
1979	32.8	24	38.9	20	26.7	29	2.35	85	0
1978	29.8	48	34.8	58	24.7	44	4.55	18	0
1977	27.3	67	32.2	75	22.3	68	5.15	7	0
1976	23.5	88	31.3	81	15.6	91	2.86	71	0
1975	27	70	34	66	20.1	77	5.03	10	0
1974	31.3	35	35.6	52	27.1	26	4.06	28	0
1973	29.9	47	36.2	47	23.6	54	6.21	3	0
1972	29.8	48	35.5	53	24	52	3.95	35	0
1971	32.2	28	38.6	25	25.7	36	3.35	53	0
1970	25.7	77	31.7	77	19.6	80	4.10	27	0
1969	24.4	84	29.9	90	18.9	83	3.94	36	0
1968	28.2	63	33.2	69	22.4	67	4.55	18	2
1967	31.4	34	36.1	49	26.6	30	3.56	51	0
1966	31	42	35.8	50	26.3	32	4.02	31	0
1965	33.8	15	38.9	20	28.6	12	3.24	57	0
1964	29.7	50	35.4	54	24	52	3.16	63	0
1963	20.5	92	27.1	94	14	94	5.14	8	0
1962	27.4	66	34.9	56	19.8	79	3.76	42	0
1961	31.3	35	36.6	44	26	33	2.27	88	0
1960							1.93	91	10
1959			36.8	40	28	19	3.75	45	4
1958	21.7	91	29.1	92	14.2	93	6.88	1	1
1957			40.3	12	27.5	23	2.80	75	5
1956							1.97	90	10
1955							1.51	96	9
1954							5.14	8	8
1953	35.7	8	43	6	28.3	16	3.17	61	0
1952	32.8	24	37.9	31	27.7	22	3.69	47	0
1951	31	42	37.5	37	24.5	46	3.63	49	0
1950	27.1	68	32.9	71	21.4	70	3.22	59	0
1949	32.1	30	38.5	26	25.7	36	4.53	20	0
1948	32.2	28	37.6	34	26.8	27	3.24	57	0
1947	26.8	73	33.1	70	20.6	75	2.60	79	0
1946	30.8	45	38.1	29	23.5	57	4.11	26	0
1945	24.7	82	30.1	86	19.3	81	1.75	93	0
1944	25.8	76	31.4	80	20.2	76	3.76	42	0
1943	25.3	78	32.5	74	18	86	1.43	97	0
1942	24.1	85	30.1	86	18.2	85	5.54	4	0
1941	31.2	37	38.2	28	24.1	50	3.06	68	0
1940	30.6	46	37.6	34	23.6	54	2.84	74	0
1939	29.7	50	35.8	50	23.6	54	3.17	61	0
1938	31.1	39	36.8	40	25.4	40	1.54	95	0
1937	28	65	33.5	67	22.6	63	2.86	71	0
1936	31.5	33	38.8	22	24.1	50	2.48	82	0
1935	23.4	89	28.2	93	18.5	84	3.61	50	0
1934	24.8	79	31.7	77	17.8	88	2.94	70	0
1933	24.8	79	32.7	72	16.9	90	2.55	81	0
1932	32.6	26	39.9	16	25.2	42	2.60	79	0
1931	33.2	20	40.3	12	26	33	2.65	78	0
1930	28.4	62	33.5	67	23.3	58	1.14	98	0
1929	26.9	72	32.6	73	21.1	72	3.07	67	0
1928	33.6	16	38.8	22	28.5	14	1.76	92	0
1927	29.3	56	36.4	46	22.6	63	3.12	65	1
1926	23.8	86	30.4	85	17.1	89	1.12	99	0

Warmest, coldest, wettest and driest

Warmest
Year	Mean, °F
2015	41.9
2023	40.1
2021	38.3
2006	37
2001	36.9
1998	36.8
1982	36.2
1953	35.7
2012	35.4
2020	35.1
More years share the last value

Coldest
Year	Mean, °F
1989	16.2
1963	20.5
1958	21.7
1980	22.5
1935	23.4
1976	23.5
2000	23.6
1926	23.8
1942	24.1
1969	24.4

Wettest
Year	Precipitation, in
1958	6.88
1990	6.26
1973	6.21
1942	5.54
2008	5.50
1983	5.26
1977	5.15
1963	5.14
1954	5.14
1975	5.03

Driest
Year	Precipitation, in
1926	1.12
1930	1.14
1943	1.43
1955	1.51
1938	1.54
1998	1.71
1945	1.75
1928	1.76
1960	1.93
1956	1.97

The hottest, coldest and wettest days

Hottest day: 57°F; 19 December 2025
Coldest night: 10°F; 26 December 2025
Wettest day: 0.83 in; 29 December 2025

Every month, season and year

Months

Seasons

Years

Oswego, NY the day's answers

All-time records

Every answer in words

December 2025 brought 3.80 in of precipitation in Oswego, NY, the wettest December since 2023, 41st wettest of 99.
The hottest day of December 2025 in Oswego, NY: 57°F on Friday 19 December 2025.
The coldest night of December 2025 in Oswego, NY: a low of 10°F on Friday 26 December 2025.
The wettest day of December 2025 in Oswego, NY: 0.83 in on Monday 29 December 2025.