Cooperstown Threshold Days by Year (USC00321766)

21 fixed thresholds counted per year at Cooperstown (USC00321766): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Cooperstown Thresholds

Cooperstown: days with 10 mm (0.39 in) or more of precipitation in 90 years, most in 1941 with 23.
Cooperstown: days with 25 mm (0.98 in) or more of precipitation in 88 years, most in 1957 with 8.
Cooperstown: nights with a minimum temperature at or below 0 C (32 F) in 74 years, most in 1945 with 219.
Cooperstown: nights with a minimum temperature at or below -10 C (14 F) in 74 years, most in 1937 with 131.
21 fixed thresholds have at least one qualifying day at Cooperstown.

Days at or above 30 C (86 F)

73 years with a qualifying day

Days per year at Cooperstown with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 67 in 1976.

Days at or above 30 C (86 F) per year at Cooperstown
Year	Days	Decade average
1935	24	37.6
1936	62	37.6
1937	35	37.6
1938	12	37.6
1939	55	37.6
1940	40	28.4
1941	31	28.4
1942	5	28.4
1943	38	28.4
1944	39	28.4
1945	25	28.4
1946	12	28.4
1947	31	28.4
1948	37	28.4
1949	26	28.4
1951	12	30.6
1952	43	30.6
1953	38	30.6
1954	19	30.6
1955	48	30.6
1956	19	30.6
1957	24	30.6
1958	23	30.6
1959	49	30.6
1960	40	30.5
1961	41	30.5
1962	19	30.5
1963	42	30.5
1964	30	30.5
1965	12	30.5
1966	29	30.5
1967	37	30.5
1968	19	30.5
1969	36	30.5
1970	51	38.9
1971	18	38.9
1972	41	38.9
1973	38	38.9
1974	38	38.9
1975	29	38.9
1976	67	38.9
1977	33	38.9
1978	47	38.9
1979	27	38.9
1980	50	38.8
1981	24	38.8
1982	30	38.8
1983	55	38.8
1984	46	38.8
1985	26	38.8
1986	25	38.8
1987	32	38.8
1988	59	38.8
1989	41	38.8
1990	29	18.6
1991	29	18.6
1992	19	18.6
1993	7	18.6
1995	17	18.6
1996	17	18.6
1997	12	18.6
1998	23	18.6
1999	14	18.6
2001	16	15.2
2002	25	15.2
2003	17	15.2
2004	4	15.2
2005	18	15.2
2006	26	15.2
2007	19	15.2
2008	6	15.2
2009	6	15.2
2011	7	7

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

First to last qualifying date each year at Cooperstown
Year	First date	Last date
1935	1935-07-02	1935-09-16
1936	1936-05-25	1936-10-08
1937	1937-05-28	1937-09-22
1938	1938-06-20	1938-09-23
1939	1939-05-05	1939-09-18
1940	1940-05-31	1940-09-19
1941	1941-05-18	1941-09-19
1942	1942-07-11	1942-09-08
1943	1943-06-18	1943-10-08
1944	1944-05-24	1944-08-20
1945	1945-06-21	1945-09-06
1946	1946-06-15	1946-08-14
1947	1947-07-02	1947-09-05
1948	1948-05-19	1948-09-16
1949	1949-06-10	1949-09-25
1951	1951-07-13	1951-08-01
1952	1952-04-26	1952-09-28
1953	1953-06-11	1953-10-02
1954	1954-06-23	1954-09-01
1955	1955-05-02	1955-09-15
1956	1956-06-08	1956-09-27
1957	1957-06-09	1957-08-10
1958	1958-05-12	1958-09-24
1959	1959-05-02	1959-09-13
1960	1960-05-31	1960-10-04
1961	1961-06-04	1961-09-08
1962	1962-04-24	1962-09-02
1963	1963-05-07	1963-10-04
1964	1964-05-20	1964-08-20
1965	1965-05-13	1965-08-16
1966	1966-05-21	1966-09-12
1967	1967-05-24	1967-09-23
1968	1968-06-03	1968-09-14
1969	1969-05-14	1969-09-14
1970	1970-05-17	1970-10-05
1971	1971-07-24	1971-09-13
1972	1972-05-15	1972-09-20
1973	1973-06-01	1973-08-31
1974	1974-06-03	1974-09-27
1975	1975-06-25	1975-08-24
1976	1976-05-10	1976-10-01
1977	1977-04-09	1977-07-25
1978	1978-05-25	1978-09-11
1979	1979-05-28	1979-09-27
1980	1980-04-20	1980-09-08
1981	1981-06-27	1981-09-13
1982	1982-05-04	1982-09-11
1983	1983-06-10	1983-09-28
1984	1984-05-17	1984-09-22
1985	1985-04-30	1985-09-05
1986	1986-05-04	1986-08-19
1987	1987-04-28	1987-08-11
1988	1988-05-18	1988-10-14
1989	1989-06-19	1989-09-30
1990	1990-04-22	1990-09-26
1991	1991-05-12	1991-09-07
1992	1992-04-30	1992-10-02
1993	1993-05-14	1993-08-25
1995	1995-06-14	1995-09-04
1996	1996-06-09	1996-09-05
1997	1997-06-01	1997-08-26
1998	1998-07-09	1998-09-17
1999	1999-05-28	1999-08-31
2001	2001-06-25	2001-09-05
2002	2002-04-16	2002-09-17
2003	2003-04-13	2003-10-19
2004	2004-07-18	2004-09-19
2005	2005-04-18	2005-09-30
2006	2006-05-23	2006-10-01
2007	2007-05-18	2007-09-23
2008	2008-07-01	2008-08-31
2009	2009-06-20	2009-08-13
2011	2011-06-30	2011-10-05

Every Fixed Threshold

Fixed thresholds at Cooperstown
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	73	67	1976	7
35 C (95 F): Days	53	29	1936	1
40 C (104 F): Days	5	10	1936	1
45 C (113 F): Days	1	2	1936	2
90 F (32.2 C): Days	72	45	1936	4
100 F (37.8 C): Days	22	16	1936	1
110 F (43.3 C): Days	1	2	1936	2
0 C (32 F): Ice days (max	73	129	1996	94
0 C (32 F): Frost days (min	74	219	1945	179
-10 C (14 F): Days with min	74	131	1937	101
-20 C (-4 F): Days with min	74	79	1937	47
-30 C (-22 F): Days with min	72	40	1936	6
-40 C (-40 F): Days with min	3	5	1936	1
20 C (68 F): Tropical nights (min	54	9	1936	4
25 C (77 F): Days with min	1	1	1947	1
10 mm (0.39 in): Days with 10 mm or more rain	90	23	1941	18
25 mm (0.98 in): Days with 25 mm or more rain	88	8	1957	8
50 mm (1.97 in): Days with 50 mm or more rain	37	3	1957	2
100 mm (3.94 in): Days with 100 mm or more rain	2	1	1964	1
10 cm (3.9 in): Days with 10 cm or more snowfall	53	6	1948	3
25 cm (9.8 in): Days with 25 cm or more snowfall	6	1	1942	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1935.

Download the Data

Data for Cooperstown 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 2025-12-31. Last revised 31 December 2025 (2025-12-31).

Cooperstown Threshold Days by Year (USC00321766)

Key Facts for Cooperstown Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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