Oswego, NY: May

31 May 2026: May 2026 averaged 56.3°F in Oswego, NY, the warmest May since 2024, tied 39th warmest of 95 (with 1936).

May 2026

Mean temperature: 56.3°F; Warmest since 2024; 39th warmest of 95
Precipitation: 3.61 in; Wettest since 2025; 36th wettest of 101

A normal May in Oswego, NY (1991 to 2020): a mean temperature of 56.9°F, between 52.5°F and 61.8°F in eight years of ten and 2.90 in of precipitation, between 1.59 in and 5.35 in in eight years of ten.

The mean temperature of every May in Oswego, NY since 1926: 56.3°F in 2026; the highest is 62.7°F, in 2012.

Normal range, 52.5 to 61.8°F

Every year, ranked, as a table

Every May 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	56.3	39	65.4	44	47.2	38	3.61	36	0
2025	55.5	48	63	64	48	28	5.14	10	0
2024	62.1	3	69.3	12	54.9	1	2.98	50	0
2023	55.5	48	64.5	51	46.4	51	2.45	60	0
2022	60.8	7	69.7	9	51.9	4	3.83	30	0
2021	56.8	33	65.4	44	48.3	26	3.05	48	0
2020					47.5	33	3.70	33	4
2019	52.6	76	60.3	88	44.9	71	5.31	8	0
2018	61.9	4	72.2	1	51.6	6	1.87	84	0
2017	55.9	43	64.5	51	47.3	35	5.68	5	0
2016	56.6	36	64.7	50	48.6	22	1.77	86	0
2015	61.8	5	71.8	2	51.7	5	3.11	47	0
2014	56.9	31	65.9	37	47.8	30	3.14	46	0
2013	60.1	10	69.5	11	50.8	9	2.95	51	0
2012	62.7	1	71.6	4	53.9	2	2.85	54	0
2011	58.7	16	67	24	50.5	10	4.81	16	0
2010	60.6	8	70.1	8	51.2	8	2.11	76	0
2009	56.9	31	66.9	26	47	41	4.47	19	0
2008	52.9	73	62.6	69	43.2	86	1.96	83	0
2007	56.4	38	66.6	29	46.2	55	1.45	93	0
2006	58	18	66.4	33	49.5	15	1.60	90	0
2005	52.3	80	60.4	85	44.3	74	1.41	94	0
2004	57.6	22	67.1	23	48.2	27	5.01	13	0
2003	53.7	65	62.2	72	45.5	63	5.77	4	1
2002	52.9	73	60.6	83	45.1	68	6.65	2	0
2001	59	15	68.1	18	49.8	13	2.85	54	0
2000	58.5	17	66.8	28	50.1	12	4.83	15	0
1999	59.5	12	69.7	9	49.3	17	1.59	91	0
1998	62.6	2	71.8	2	53.3	3	1.58	92	0
1997	50.9	88	59.4	91	42.5	97	2.26	66	0
1996	53.3	69	62.5	70	44.2	75	5.04	12	0
1995	54.7	60	63.5	61	46.3	53	2.11	76	1
1994	52.1	82	61.2	82	43.1	88	2.74	57	0
1993	55.1	55	65	48	45.2	67	2.10	78	0
1992	56	42	66.4	33	45.6	61	3.83	30	0
1991	61.1	6	70.9	5	51.4	7	4.14	24	0
1990	52.8	75	61.9	74	43.7	81	6.12	3	0
1989	55.6	47	64.3	54	46.9	44	5.36	7	0
1988	57.8	20	68.2	16	47.5	33	3.21	44	1
1987	59.8	11	70.7	6	48.8	20	1.09	100	0
1986	57.9	19	67.4	21	48.4	25	2.31	65	0
1985	57.4	24	67.6	20	47.2	38	2.04	80	0
1984	52.2	81	61.3	81	43	91	5.67	6	0
1983	53.3	69	63.9	55	43.1	88	4.56	17	2
1982	57.1	28	67.2	22	47.3	35	3.17	45	1
1981	55	57	66	36	44.1	76	2.23	68	0
1980	56.2	41	66.3	35	46.2	55	1.37	95	0
1979	55.9	43	65.8	40	46.1	58	4.41	22	0
1978	57.2	27	65.9	37	48.5	23	2.41	61	0
1977	57.7	21	69.2	13	46.2	55	0.92	101	0
1976	53.2	71	62.9	65	43.6	84	4.42	21	0
1975	60.6	8	70.7	6	50.5	10	2.08	79	0
1974	52.5	78	61.8	77	43.2	86	3.44	41	0
1973	53.9	64	62.3	71	45.5	63	3.68	34	0
1972	56.6	36	66.5	30	46.7	45	4.43	20	0
1971	53.5	68	63.1	62	43.9	79	2.04	80	0
1970	57.3	25	68.3	15	46.4	51	3.74	32	0
1969	54	63	65.1	46	42.8	93	4.37	23	0
1968	48.9	94	55.7	98	42.3	98	3.60	37	2
1967	48.8	95	54.8	99	42.8	93	3.53	38	0
1966	50.7	89	58.8	93	42.6	96	1.33	96	0
1965	56.8	33	66.5	30	47	41	2.18	73	1
1964	57.3	25	65.7	42	48.8	20	5.19	9	0
1963	52	84	60	89	44	78	3.91	27	0
1962	59.2	13	68.2	16	49.6	14	2.15	75	2
1961							2.17	74	7
1960	57.1	28	65.1	46	48.9	19	2.72	58	3
1959			66.9	26	46.7	45	3.89	28	6
1958			61.9	74	43.6	84	2.20	71	5
1957			61.7	78	45	70	3.45	40	6
1956	50.7	89	60.4	85	40.7	100	3.39	42	2
1955			67.8	19	48	28	3.30	43	4
1954	54.2	62	62.7	68	45.7	60	2.38	63	0
1953	54.9	59	62.9	65	47.3	35	3.89	28	2
1952	51.8	85	59.5	90	44.1	76	3.63	35	0
1951	55.7	45	63.6	58	47.7	32	1.73	87	0
1950	55.3	51	63.6	58	47.1	40	2.23	68	0
1949	56.7	35	65.7	42	47.8	30	1.83	85	0
1948	51.1	87	58.5	94	43.8	80	3.49	39	0
1947	52.5	78	61.9	74	43.1	88	5.11	11	0
1946	53.7	65	62.2	72	45.1	68	2.89	52	0
1945	49.7	92	56.5	97	42.9	92	4.50	18	0
1944	59.1	14	68.8	14	49.5	15	2.19	72	0
1943	53	72	60.5	84	45.5	63	4.92	14	0
1942	57.5	23	65.9	37	49	18	3.98	26	0
1941	55.3	51	64.4	53	46.3	53	1.17	98	0
1940	54.7	60	62.8	67	46.5	49	3.05	48	0
1939	55.4	50	64.9	49	45.8	59	1.33	96	0
1938	53.6	67	61.6	79	45.5	63	2.38	63	0
1937	55.3	51	63.8	56	46.7	45	2.54	59	0
1936	56.3	39	67	24	45.6	61	2.01	82	0
1935	49.7	92	56.6	96	42.7	95	2.22	70	0
1934	55.7	45	66.5	30	44.9	71	1.15	99	0
1933	57.1	28	65.8	40	48.5	23	2.24	67	0
1932	55	57	63.1	62	47	41	1.68	89	0
1931	55.2	54	63.8	56	46.6	48	7.47	1	0
1930	55.1	55	63.6	58	46.5	49	2.83	56	0
1929	52.6	76	61.6	79	43.7	81	4.03	25	0
1928	52.1	82	60.4	85	43.7	81	2.39	62	0
1927	51.7	86	58.9	92	44.6	73	2.86	53	0
1926	50	91	58.5	94	41.5	99	1.70	88	0

Warmest, coldest, wettest and driest

Warmest
Year	Mean, °F
2012	62.7
1998	62.6
2024	62.1
2018	61.9
2015	61.8
1991	61.1
2022	60.8
2010	60.6
1975	60.6
2013	60.1

Coldest
Year	Mean, °F
1967	48.8
1968	48.9
1945	49.7
1935	49.7
1926	50
1966	50.7
1956	50.7
1997	50.9
1948	51.1
1927	51.7

Wettest
Year	Precipitation, in
1931	7.47
2002	6.65
1990	6.12
2003	5.77
2017	5.68
1984	5.67
1989	5.36
2019	5.31
1964	5.19
2025	5.14

Driest
Year	Precipitation, in
1977	0.92
1987	1.09
1934	1.15
1941	1.17
1966	1.33
1939	1.33
1980	1.37
2005	1.41
2007	1.45
1998	1.58

The hottest, coldest and wettest days

Hottest day: 89°F; 18 May 2026
Coldest night: 35°F; 12 May 2026, 1 May 2026
Wettest day: 1.02 in; 13 May 2026

Every month, season and year

Months

Seasons

Years

Oswego, NY the day's answers

All-time records

Every answer in words

May 2026 brought 3.61 in of precipitation in Oswego, NY, the wettest May since 2025, 36th wettest of 101.
The hottest day of May 2026 in Oswego, NY: 89°F on Monday 18 May 2026.
The coldest night of May 2026 in Oswego, NY: a low of 35°F on Tuesday 12 May 2026 and Friday 1 May 2026.
The wettest day of May 2026 in Oswego, NY: 1.02 in on Wednesday 13 May 2026.