Penn Yan Threshold Days by Year (USC00306510)

19 fixed thresholds counted per year at Penn Yan (USC00306510): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Penn Yan Thresholds

Penn Yan: days with a maximum temperature at or above 30 C (86 F) in 61 years, most in 1900 with 64.
Penn Yan: days with a maximum temperature at or below 0 C (32 F) in 61 years, most in 1978 with 63.
Penn Yan: days with a maximum temperature at or above 90 F (32.2 C) in 59 years, most in 1955 with 42.
Penn Yan: nights with a minimum temperature at or below 0 C (32 F) in 59 years, most in 1934 with 164.
19 fixed thresholds have at least one qualifying day at Penn Yan.

Days at or above 30 C (86 F)

61 years with a qualifying day

Days per year at Penn Yan with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 64 in 1900.

Days at or above 30 C (86 F) per year at Penn Yan
Year	Days	Decade average
1898	50	50
1899	50	50
1900	64	31
1901	34	31
1902	9	31
1903	13	31
1908	35	31
1909	31	31
1918	24	24
1922	22	28.5
1929	35	28.5
1930	40	37.4
1931	41	37.4
1932	30	37.4
1933	37	37.4
1934	43	37.4
1935	29	37.4
1936	41	37.4
1937	39	37.4
1938	31	37.4
1939	43	37.4
1940	22	35.4
1941	50	35.4
1942	16	35.4
1943	32	35.4
1944	45	35.4
1945	25	35.4
1946	32	35.4
1947	55	35.4
1948	42	35.4
1951	37	36.6
1952	50	36.6
1953	43	36.6
1954	33	36.6
1955	62	36.6
1956	16	36.6
1957	32	36.6
1958	16	36.6
1959	40	36.6
1960	13	25.4
1961	20	25.4
1962	25	25.4
1963	24	25.4
1964	35	25.4
1965	31	25.4
1966	41	25.4
1967	10	25.4
1968	32	25.4
1969	23	25.4
1970	26	23.3
1971	31	23.3
1972	12	23.3
1977	23	23.3
1978	27	23.3
1979	21	23.3
1980	23	31.7
1982	18	31.7
1983	54	31.7
1998	8	18.5
1999	29	18.5
2000	4	4

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

First to last qualifying date each year at Penn Yan
Year	First date	Last date
1898	1898-06-07	1898-09-30
1899	1899-04-29	1899-09-18
1900	1900-05-13	1900-10-06
1901	1901-06-05	1901-09-07
1902	1902-05-22	1902-08-31
1903	1903-05-18	1903-09-14
1908	1908-05-26	1908-09-26
1909	1909-06-21	1909-09-14
1918	1918-06-01	1918-08-26
1922	1922-05-24	1922-10-06
1929	1929-05-30	1929-09-06
1930	1930-05-06	1930-09-20
1931	1931-05-28	1931-09-22
1932	1932-05-16	1932-09-22
1933	1933-06-07	1933-09-08
1934	1934-05-10	1934-09-26
1935	1935-04-27	1935-09-25
1936	1936-07-07	1936-09-23
1937	1937-05-31	1937-10-06
1938	1938-04-27	1938-08-21
1939	1939-05-07	1939-10-10
1940	1940-06-04	1940-09-20
1941	1941-04-19	1941-10-07
1942	1942-05-29	1942-09-17
1943	1943-06-03	1943-09-06
1944	1944-05-03	1944-09-20
1945	1945-06-14	1945-09-10
1946	1946-06-23	1946-10-05
1947	1947-05-23	1947-10-17
1948	1948-06-03	1948-09-17
1951	1951-05-16	1951-10-05
1952	1952-06-08	1952-09-14
1953	1953-05-10	1953-09-30
1954	1954-04-21	1954-09-30
1955	1955-05-04	1955-09-19
1956	1956-05-30	1956-09-05
1957	1957-06-13	1957-09-03
1958	1958-06-05	1958-09-25
1959	1959-05-20	1959-09-24
1960	1960-04-24	1960-09-09
1961	1961-06-12	1961-09-24
1962	1962-04-26	1962-09-01
1963	1963-06-09	1963-10-07
1964	1964-05-22	1964-09-11
1965	1965-05-03	1965-09-22
1966	1966-05-28	1966-09-03
1967	1967-06-09	1967-07-23
1968	1968-06-05	1968-08-25
1969	1969-05-28	1969-09-13
1970	1970-06-02	1970-09-24
1971	1971-05-19	1971-09-09
1972	1972-06-15	1972-08-25
1977	1977-05-17	1977-09-01
1978	1978-05-26	1978-09-21
1979	1979-05-08	1979-09-01
1980	1980-05-05	1980-09-01
1982	1982-05-07	1982-09-14
1983	1983-06-12	1983-09-20
1998	1998-05-17	1998-09-07
1999	1999-05-31	1999-09-07
2000	2000-06-03	2000-09-02

Every Fixed Threshold

Fixed thresholds at Penn Yan
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	61	64	1900	4
35 C (95 F): Days	33	14	1933	2
40 C (104 F): Days	1	1	1936	1
90 F (32.2 C): Days	59	42	1955	9
100 F (37.8 C): Days	6	3	1936	1
0 C (32 F): Ice days (max	61	63	1978	60
0 C (32 F): Frost days (min	59	164	1934	136
-10 C (14 F): Days with min	59	59	1934	46
-20 C (-4 F): Days with min	47	17	1934	4
-30 C (-22 F): Days with min	1	1	1934	1
20 C (68 F): Tropical nights (min	58	29	1948	2
25 C (77 F): Days with min	7	4	1944	1
10 mm (0.39 in): Days with 10 mm or more rain	51	41	1972	30
25 mm (0.98 in): Days with 25 mm or more rain	50	11	1999	7
50 mm (1.97 in): Days with 50 mm or more rain	22	3	1935	2
100 mm (3.94 in): Days with 100 mm or more rain	4	1	1935	1
10 cm (3.9 in): Days with 10 cm or more snowfall	29	7	1948	3
25 cm (9.8 in): Days with 25 cm or more snowfall	9	2	1960	1
50 cm (19.7 in): Days with 50 cm or more snowfall	1	1	1900	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1898.

Download the Data

Data for Penn Yan 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).

Penn Yan Threshold Days by Year (USC00306510)

Key Facts for Penn Yan Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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