Cortland Threshold Days by Year

18 fixed thresholds counted per year at Cortland (USC00301799): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Cortland Thresholds

Cortland: nights with a minimum temperature at or below 0 C (32 F) in 99 years, most in 1907 with 184.
Cortland: nights with a minimum temperature at or below -10 C (14 F) in 99 years, most in 1904 with 67.
Cortland: days with a maximum temperature at or above 30 C (86 F) in 98 years, most in 1900 with 53.
Cortland: days with a maximum temperature at or below 0 C (32 F) in 98 years, most in 1904 with 86.
18 fixed thresholds have at least one qualifying day at Cortland.

Days at or above 30 C (86 F)

98 years with a qualifying day

Days per year at Cortland with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 53 in 1900.

Days at or above 30 C (86 F) per year at Cortland
Year	Days	Decade average
1896	20	19
1897	15	19
1898	14	19
1899	27	19
1900	53	20.5
1902	9	20.5
1904	14	20.5
1905	13	20.5
1906	20	20.5
1907	10	20.5
1908	32	20.5
1909	13	20.5
1910	31	21.1
1912	14	21.1
1913	35	21.1
1914	21	21.1
1915	8	21.1
1916	25	21.1
1917	10	21.1
1918	22	21.1
1919	24	21.1
1920	11	21
1921	35	21
1922	16	21
1923	26	21
1924	16	21
1925	20	21
1926	14	21
1927	16	21
1928	23	21
1929	33	21
1930	33	33.9
1931	38	33.9
1932	25	33.9
1933	34	33.9
1934	32	33.9
1935	25	33.9
1936	32	33.9
1937	41	33.9
1938	38	33.9
1939	41	33.9
1940	11	26
1941	26	26
1942	22	26
1943	30	26
1944	38	26
1948	19	26
1949	36	26
1950	14	21.9
1951	20	21.9
1952	27	21.9
1953	32	21.9
1954	22	21.9
1955	42	21.9
1956	7	21.9
1957	21	21.9
1958	7	21.9
1959	27	21.9
1960	7	21.6
1961	15	21.6
1962	25	21.6
1963	20	21.6
1964	33	21.6
1965	27	21.6
1966	15	21.6
1967	16	21.6
1968	29	21.6
1969	29	21.6
1970	28	18.9
1971	24	18.9
1972	8	18.9
1973	21	18.9
1974	15	18.9
1975	25	18.9
1976	11	18.9
1977	18	18.9
1978	22	18.9
1979	17	18.9
1980	23	22.9
1981	11	22.9
1982	15	22.9
1983	40	22.9
1984	18	22.9
1985	8	22.9
1986	15	22.9
1987	30	22.9
1988	45	22.9
1989	24	22.9
1990	15	20.6
1991	32	20.6
1992	5	20.6
1993	20	20.6
1994	19	20.6
1995	35	20.6
1996	16	20.6
1997	16	20.6
1998	27	20.6
2000	11	11

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

First to last qualifying date each year at Cortland
Year	First date	Last date
1896	1896-05-10	1896-09-12
1897	1897-06-15	1897-09-16
1898	1898-06-30	1898-09-19
1899	1899-05-01	1899-09-03
1900	1900-05-15	1900-09-26
1902	1902-04-22	1902-09-01
1904	1904-05-25	1904-08-26
1905	1905-06-18	1905-08-06
1906	1906-05-16	1906-09-19
1907	1907-06-18	1907-08-20
1908	1908-05-26	1908-09-27
1909	1909-06-26	1909-08-26
1910	1910-06-20	1910-08-26
1912	1912-07-03	1912-08-14
1913	1913-05-03	1913-09-08
1914	1914-05-26	1914-09-23
1915	1915-04-25	1915-09-16
1916	1916-07-07	1916-08-23
1917	1917-07-22	1917-08-20
1918	1918-06-01	1918-08-26
1919	1919-06-01	1919-09-09
1920	1920-06-01	1920-08-26
1921	1921-05-21	1921-09-10
1922	1922-06-08	1922-10-06
1923	1923-06-05	1923-09-01
1924	1924-06-19	1924-08-31
1925	1925-04-24	1925-09-11
1926	1926-05-02	1926-08-06
1927	1927-05-22	1927-10-02
1928	1928-05-04	1928-10-12
1929	1929-05-29	1929-09-06
1930	1930-05-05	1930-09-16
1931	1931-05-28	1931-09-22
1932	1932-05-16	1932-09-22
1933	1933-06-03	1933-08-30
1934	1934-05-21	1934-08-19
1935	1935-04-27	1935-08-18
1936	1936-05-08	1936-09-23
1937	1937-05-22	1937-09-03
1938	1938-04-27	1938-08-21
1939	1939-05-07	1939-10-10
1940	1940-06-04	1940-08-12
1941	1941-06-22	1941-10-08
1942	1942-05-30	1942-09-18
1943	1943-06-03	1943-09-06
1944	1944-05-04	1944-09-02
1948	1948-06-25	1948-09-14
1949	1949-05-05	1949-10-11
1950	1950-06-08	1950-08-28
1951	1951-06-19	1951-10-06
1952	1952-06-18	1952-09-15
1953	1953-05-11	1953-10-01
1954	1954-05-03	1954-09-08
1955	1955-05-05	1955-09-20
1956	1956-06-13	1956-08-18
1957	1957-06-14	1957-09-04
1958	1958-06-02	1958-09-01
1959	1959-05-21	1959-09-10
1960	1960-07-30	1960-09-09
1961	1961-05-15	1961-09-26
1962	1962-04-28	1962-09-02
1963	1963-06-25	1963-10-07
1964	1964-05-08	1964-09-23
1965	1965-05-04	1965-09-23
1966	1966-06-06	1966-08-10
1967	1967-06-04	1967-08-19
1968	1968-06-07	1968-08-26
1969	1969-05-29	1969-09-02
1970	1970-04-30	1970-09-25
1971	1971-05-19	1971-09-11
1972	1972-06-16	1972-07-24
1973	1973-06-12	1973-09-05
1974	1974-06-11	1974-08-22
1975	1975-05-20	1975-08-27
1976	1976-04-19	1976-08-27
1977	1977-05-18	1977-09-02
1978	1978-05-27	1978-09-22
1979	1979-05-09	1979-08-31
1980	1980-05-24	1980-09-23
1981	1981-05-26	1981-07-14
1982	1982-05-08	1982-09-15
1983	1983-06-13	1983-09-21
1984	1984-06-06	1984-08-14
1985	1985-07-06	1985-09-21
1986	1986-05-19	1986-08-21
1987	1987-04-21	1987-08-18
1988	1988-05-28	1988-08-16
1989	1989-05-19	1989-09-11
1990	1990-04-27	1990-08-18
1991	1991-05-17	1991-09-17
1992	1992-05-22	1992-08-28
1993	1993-05-11	1993-08-28
1994	1994-06-15	1994-08-05
1995	1995-06-08	1995-09-01
1996	1996-05-19	1996-09-04
1997	1997-06-11	1997-08-17
1998	1998-05-16	1998-09-15
2000	2000-05-08	2000-09-03

Every Fixed Threshold

Fixed thresholds at Cortland
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	98	53	1900	11
35 C (95 F): Days	46	9	1933	1
90 F (32.2 C): Days	92	27	1988	1
100 F (37.8 C): Days	6	2	1936	1
0 C (32 F): Ice days (max	98	86	1904	54
0 C (32 F): Frost days (min	99	184	1907	138
-10 C (14 F): Days with min	99	67	1904	54
-20 C (-4 F): Days with min	86	26	1948	6
-30 C (-22 F): Days with min	8	2	1896	2
20 C (68 F): Tropical nights (min	94	18	1931	2
25 C (77 F): Days with min	3	1	1907	1
10 mm (0.39 in): Days with 10 mm or more rain	93	44	1898	35
25 mm (0.98 in): Days with 25 mm or more rain	91	14	1898	7
50 mm (1.97 in): Days with 50 mm or more rain	40	3	1937	1
100 mm (3.94 in): Days with 100 mm or more rain	4	1	1922	1
10 cm (3.9 in): Days with 10 cm or more snowfall	53	12	1960	7
25 cm (9.8 in): Days with 25 cm or more snowfall	22	3	1961	1
50 cm (19.7 in): Days with 50 cm or more snowfall	3	1	1961	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1896.

Download the Data

Data for Cortland 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 2026-10-16 (16 October 2026). Threshold counts are computed by this site.

Data as of 2025-12-31. Last revised 31 December 2025 (2025-12-31).

Cortland Threshold Days by Year

Key Facts for Cortland Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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