Oswego Threshold Days by Year (USC00306314)

16 fixed thresholds counted per year at Oswego (USC00306314): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Oswego Thresholds

Oswego: days with a maximum temperature at or above 30 C (86 F) in 100 years, most in 1999 with 32.
Oswego: days with a maximum temperature at or below 0 C (32 F) in 100 years, most in 1978 with 79.
Oswego: nights with a minimum temperature at or below 0 C (32 F) in 100 years, most in 1926 with 153.
Oswego: nights with a minimum temperature at or below -10 C (14 F) in 100 years, most in 1934 with 60.
16 fixed thresholds have at least one qualifying day at Oswego.

Days at or above 30 C (86 F)

100 years with a qualifying day

Days per year at Oswego with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 32 in 1999.

Days at or above 30 C (86 F) per year at Oswego
Year	Days	Decade average
1926	4	6.8
1927	3	6.8
1928	10	6.8
1929	10	6.8
1930	14	14.8
1931	16	14.8
1932	11	14.8
1933	19	14.8
1934	16	14.8
1935	17	14.8
1936	14	14.8
1937	16	14.8
1938	14	14.8
1939	11	14.8
1940	8	14.8
1941	18	14.8
1942	11	14.8
1943	12	14.8
1944	22	14.8
1945	9	14.8
1946	12	14.8
1947	21	14.8
1948	10	14.8
1949	25	14.8
1950	6	13.4
1951	5	13.4
1952	20	13.4
1953	18	13.4
1954	5	13.4
1955	30	13.4
1956	5	13.4
1958	8	13.4
1959	24	13.4
1960	7	9.7
1961	9	9.7
1962	8	9.7
1963	7	9.7
1964	14	9.7
1965	13	9.7
1966	8	9.7
1967	1	9.7
1968	11	9.7
1969	19	9.7
1970	15	11.9
1971	13	11.9
1972	8	11.9
1973	20	11.9
1974	5	11.9
1975	12	11.9
1976	4	11.9
1977	12	11.9
1978	18	11.9
1979	12	11.9
1980	9	13.3
1981	5	13.3
1982	7	13.3
1983	21	13.3
1984	13	13.3
1985	11	13.3
1986	8	13.3
1987	22	13.3
1988	29	13.3
1989	8	13.3
1990	9	14.9
1991	22	14.9
1992	2	14.9
1993	18	14.9
1994	10	14.9
1995	26	14.9
1996	8	14.9
1997	11	14.9
1998	11	14.9
1999	32	14.9
2000	2	15.4
2001	21	15.4
2002	31	15.4
2003	9	15.4
2004	5	15.4
2005	31	15.4
2006	15	15.4
2007	22	15.4
2008	13	15.4
2009	5	15.4
2010	15	14.7
2011	13	14.7
2012	24	14.7
2013	13	14.7
2014	7	14.7
2015	12	14.7
2016	20	14.7
2017	10	14.7
2018	22	14.7
2019	11	14.7
2020	15	12
2021	16	12
2022	12	12
2023	4	12
2024	12	12
2025	16	12
2026	9	12

For each year, a bar from the first to the last day at Oswego meeting 30 C (86 F).

First to last qualifying date each year at Oswego
Year	First date	Last date
1926	1926-07-09	1926-08-06
1927	1927-07-13	1927-07-28
1928	1928-06-13	1928-08-28
1929	1929-07-07	1929-09-05
1930	1930-06-05	1930-09-15
1931	1931-05-28	1931-09-22
1932	1932-05-16	1932-09-13
1933	1933-06-08	1933-08-12
1934	1934-06-02	1934-09-26
1935	1935-07-03	1935-09-25
1936	1936-07-08	1936-09-23
1937	1937-07-07	1937-10-06
1938	1938-06-23	1938-08-20
1939	1939-06-11	1939-09-16
1940	1940-07-19	1940-08-18
1941	1941-05-21	1941-09-16
1942	1942-05-29	1942-09-17
1943	1943-06-04	1943-09-06
1944	1944-05-03	1944-08-21
1945	1945-06-14	1945-09-08
1946	1946-06-25	1946-08-09
1947	1947-06-10	1947-09-13
1948	1948-06-29	1948-09-06
1949	1949-05-04	1949-08-27
1950	1950-06-08	1950-08-27
1951	1951-07-08	1951-09-13
1952	1952-06-17	1952-09-02
1953	1953-06-21	1953-09-05
1954	1954-06-20	1954-09-07
1955	1955-05-22	1955-09-20
1956	1956-06-12	1956-08-31
1958	1958-06-01	1958-08-31
1959	1959-06-28	1959-09-29
1960	1960-06-04	1960-09-09
1961	1961-06-13	1961-09-14
1962	1962-05-20	1962-09-13
1963	1963-06-29	1963-07-28
1964	1964-05-24	1964-09-08
1965	1965-06-07	1965-09-23
1966	1966-05-24	1966-08-09
1967	1967-07-01	1967-07-01
1968	1968-07-01	1968-09-21
1969	1969-06-12	1969-09-01
1970	1970-04-30	1970-09-24
1971	1971-06-07	1971-09-08
1972	1972-06-15	1972-07-23
1973	1973-06-11	1973-09-05
1974	1974-06-10	1974-07-14
1975	1975-06-15	1975-08-26
1976	1976-06-10	1976-06-19
1977	1977-05-22	1977-08-29
1978	1978-06-12	1978-08-20
1979	1979-06-17	1979-08-24
1980	1980-06-26	1980-08-30
1981	1981-06-15	1981-08-02
1982	1982-07-06	1982-09-13
1983	1983-06-15	1983-09-21
1984	1984-06-07	1984-08-10
1985	1985-07-05	1985-08-13
1986	1986-06-16	1986-08-15
1987	1987-05-29	1987-08-17
1988	1988-06-14	1988-08-15
1989	1989-07-03	1989-09-09
1990	1990-04-28	1990-08-17
1991	1991-05-16	1991-09-17
1992	1992-08-26	1992-08-27
1993	1993-06-14	1993-09-14
1994	1994-06-15	1994-08-20
1995	1995-06-17	1995-08-31
1996	1996-05-19	1996-09-06
1997	1997-06-21	1997-08-16
1998	1998-05-16	1998-08-10
1999	1999-05-30	1999-09-07
2000	2000-06-16	2000-08-31
2001	2001-04-23	2001-09-09
2002	2002-06-21	2002-09-20
2003	2003-06-25	2003-09-14
2004	2004-06-08	2004-08-28
2005	2005-06-08	2005-09-14
2006	2006-06-17	2006-08-02
2007	2007-05-24	2007-09-26
2008	2008-06-06	2008-09-14
2009	2009-04-27	2009-08-20
2010	2010-06-19	2010-09-24
2011	2011-05-29	2011-07-22
2012	2012-04-16	2012-08-31
2013	2013-05-31	2013-09-11
2014	2014-06-17	2014-09-06
2015	2015-05-09	2015-09-07
2016	2016-06-20	2016-09-10
2017	2017-05-18	2017-09-27
2018	2018-05-30	2018-09-06
2019	2019-07-04	2019-10-01
2020	2020-05-27	2020-08-15
2021	2021-05-26	2021-08-11
2022	2022-06-16	2022-08-30
2023	2023-07-06	2023-07-27
2024	2024-05-21	2024-07-30
2025	2025-06-04	2025-08-13
2026	2026-05-18	2026-08-06

Every Fixed Threshold

Fixed thresholds at Oswego
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	100	32	1999	9
35 C (95 F): Days	9	3	1944	1
90 F (32.2 C): Days	77	18	1988	3
0 C (32 F): Ice days (max	100	79	1978	33
0 C (32 F): Frost days (min	100	153	1926	76
-10 C (14 F): Days with min	100	60	1934	25
-20 C (-4 F): Days with min	69	10	1994	1
-30 C (-22 F): Days with min	1	1	1933	1
20 C (68 F): Tropical nights (min	100	38	2021	25
25 C (77 F): Days with min	7	2	1999	1
10 mm (0.39 in): Days with 10 mm or more rain	100	51	2008	22
25 mm (0.98 in): Days with 25 mm or more rain	100	15	2008	4
50 mm (1.97 in): Days with 50 mm or more rain	40	3	1992	1
10 cm (3.9 in): Days with 10 cm or more snowfall	99	20	1977	6
25 cm (9.8 in): Days with 25 cm or more snowfall	58	8	1978	2
50 cm (19.7 in): Days with 50 cm or more snowfall	14	2	2004	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1926.

Download the Data

Data for Oswego threshold days by year: CSV or JSON. Field meanings are on the data page.

Source: NOAA National Centers for Environmental Information, Global Historical Climatology Network Daily (GHCN-Daily). Records are computed by World Extreme Weather Monitor and are not official NOAA products. (US Government open data (NOAA NCEI)) Data as of 2026-10-17 (17 October 2026). Threshold counts are computed by this site.

Data as of 2026-10-12. Last revised 12 October 2026 (2026-10-12).

Oswego Threshold Days by Year (USC00306314)

Key Facts for Oswego Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

Related