Allegany Sp Threshold Days by Year (USC00300093)

16 fixed thresholds counted per year at Allegany Sp (USC00300093): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Allegany Sp Thresholds

Allegany Sp: days with 10 mm (0.39 in) or more of precipitation in 98 years, most in 2017 with 51.
Allegany Sp: days with 25 mm (0.98 in) or more of precipitation in 98 years, most in 1937 with 15.
Allegany Sp: days with a maximum temperature at or below 0 C (32 F) in 93 years, most in 1995 with 74.
Allegany Sp: nights with a minimum temperature at or below 0 C (32 F) in 92 years, most in 1987 with 203.
16 fixed thresholds have at least one qualifying day at Allegany Sp.

Days at or above 30 C (86 F)

89 years with a qualifying day

Days per year at Allegany Sp with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 42 in 1934.

Days at or above 30 C (86 F) per year at Allegany Sp
Year	Days	Decade average
1925	17	12.6
1926	6	12.6
1927	10	12.6
1928	14	12.6
1929	16	12.6
1930	24	25.6
1931	23	25.6
1932	16	25.6
1933	21	25.6
1934	42	25.6
1935	20	25.6
1936	38	25.6
1937	28	25.6
1938	19	25.6
1939	25	25.6
1940	24	21.4
1941	30	21.4
1942	14	21.4
1943	28	21.4
1944	30	21.4
1945	13	21.4
1946	10	21.4
1947	19	21.4
1948	13	21.4
1949	33	21.4
1950	8	18.8
1951	8	18.8
1952	33	18.8
1953	26	18.8
1954	11	18.8
1955	35	18.8
1956	8	18.8
1957	10	18.8
1959	30	18.8
1960	4	11.9
1961	8	11.9
1962	14	11.9
1963	13	11.9
1964	22	11.9
1965	9	11.9
1966	26	11.9
1967	7	11.9
1968	9	11.9
1969	7	11.9
1971	12	7.3
1972	5	7.3
1973	13	7.3
1974	4	7.3
1975	8	7.3
1976	2	7.3
1978	8	7.3
1979	6	7.3
1980	3	7.8
1981	8	7.8
1982	5	7.8
1983	12	7.8
1984	4	7.8
1986	4	7.8
1987	16	7.8
1989	10	7.8
1990	6	9.5
1991	22	9.5
1992	1	9.5
1993	13	9.5
1994	10	9.5
1995	18	9.5
1996	4	9.5
1997	4	9.5
1998	5	9.5
1999	12	9.5
2000	1	4.3
2003	2	4.3
2006	10	4.3
2010	10	10.1
2011	15	10.1
2012	14	10.1
2013	6	10.1
2015	11	10.1
2016	10	10.1
2017	2	10.1
2018	20	10.1
2019	3	10.1
2020	16	10.7
2021	11	10.7
2022	12	10.7
2023	4	10.7
2024	8	10.7
2025	13	10.7
2026	11	10.7

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

First to last qualifying date each year at Allegany Sp
Year	First date	Last date
1925	1925-04-24	1925-09-11
1926	1926-07-09	1926-08-06
1927	1927-06-29	1927-10-02
1928	1928-05-04	1928-08-29
1929	1929-05-27	1929-09-05
1930	1930-05-07	1930-09-14
1931	1931-05-29	1931-09-22
1932	1932-07-13	1932-09-15
1933	1933-06-08	1933-09-08
1934	1934-05-20	1934-09-25
1935	1935-06-14	1935-08-19
1936	1936-05-10	1936-09-23
1937	1937-05-31	1937-09-03
1938	1938-05-05	1938-08-20
1939	1939-05-25	1939-09-16
1940	1940-06-07	1940-09-20
1941	1941-05-21	1941-10-07
1942	1942-04-26	1942-09-15
1943	1943-06-03	1943-09-06
1944	1944-05-03	1944-08-16
1945	1945-06-14	1945-09-07
1946	1946-06-25	1946-09-27
1947	1947-06-10	1947-08-25
1948	1948-06-23	1948-09-13
1949	1949-05-04	1949-10-10
1950	1950-05-05	1950-08-26
1951	1951-07-30	1951-10-05
1952	1952-06-08	1952-09-14
1953	1953-05-11	1953-09-04
1954	1954-04-21	1954-09-06
1955	1955-06-18	1955-09-19
1956	1956-06-12	1956-08-31
1957	1957-06-13	1957-09-02
1959	1959-05-06	1959-09-29
1960	1960-07-26	1960-09-08
1961	1961-05-14	1961-09-03
1962	1962-05-14	1962-08-31
1963	1963-06-25	1963-07-28
1964	1964-05-19	1964-09-08
1965	1965-06-06	1965-09-22
1966	1966-06-23	1966-08-10
1967	1967-06-05	1967-06-17
1968	1968-06-08	1968-08-24
1969	1969-06-02	1969-07-17
1971	1971-05-20	1971-09-09
1972	1972-07-20	1972-07-24
1973	1973-06-06	1973-09-05
1974	1974-05-15	1974-07-15
1975	1975-05-22	1975-08-04
1976	1976-04-19	1976-06-16
1978	1978-05-31	1978-08-20
1979	1979-05-09	1979-08-01
1980	1980-07-20	1980-07-22
1981	1981-06-16	1981-07-14
1982	1982-07-08	1982-09-15
1983	1983-06-15	1983-09-11
1984	1984-06-11	1984-08-11
1986	1986-07-06	1986-07-19
1987	1987-05-29	1987-08-18
1989	1989-06-26	1989-08-06
1990	1990-04-28	1990-07-30
1991	1991-05-14	1991-09-17
1992	1992-06-19	1992-06-19
1993	1993-06-19	1993-09-01
1994	1994-06-16	1994-07-22
1995	1995-06-20	1995-09-01
1996	1996-05-19	1996-05-22
1997	1997-06-22	1997-07-16
1998	1998-05-17	1998-08-29
1999	1999-06-28	1999-08-01
2000	2000-06-11	2000-06-11
2003	2003-06-26	2003-06-27
2006	2006-05-30	2006-08-03
2010	2010-05-02	2010-09-03
2011	2011-06-01	2011-09-04
2012	2012-05-29	2012-09-01
2013	2013-06-24	2013-07-20
2015	2015-05-09	2015-09-09
2016	2016-05-28	2016-08-29
2017	2017-06-14	2017-09-25
2018	2018-05-29	2018-09-06
2019	2019-05-20	2019-07-20
2020	2020-05-26	2020-08-28
2021	2021-05-21	2021-08-30
2022	2022-05-22	2022-08-30
2023	2023-06-03	2023-07-08
2024	2024-06-18	2024-08-02
2025	2025-06-23	2025-08-13
2026	2026-05-19	2026-07-17

Every Fixed Threshold

Fixed thresholds at Allegany Sp
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	89	42	1934	11
35 C (95 F): Days	12	6	1936	2
90 F (32.2 C): Days	66	18	1934	5
100 F (37.8 C): Days	1	2	1936	2
0 C (32 F): Ice days (max	93	74	1995	43
0 C (32 F): Frost days (min	92	203	1987	99
-10 C (14 F): Days with min	92	68	1989	33
-20 C (-4 F): Days with min	87	23	1984	8
-30 C (-22 F): Days with min	17	4	1934	2
20 C (68 F): Tropical nights (min	41	6	1952	3
10 mm (0.39 in): Days with 10 mm or more rain	98	51	2017	33
25 mm (0.98 in): Days with 25 mm or more rain	98	15	1937	7
50 mm (1.97 in): Days with 50 mm or more rain	52	3	1927	3
100 mm (3.94 in): Days with 100 mm or more rain	1	1	1984	1
10 cm (3.9 in): Days with 10 cm or more snowfall	47	13	2016	4
25 cm (9.8 in): Days with 25 cm or more snowfall	15	2	2010	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1925.

Download the Data

Data for Allegany Sp 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).

Allegany Sp Threshold Days by Year (USC00300093)

Key Facts for Allegany Sp Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

Related