Hillsdale Threshold Days by Year (USC00203823)

18 fixed thresholds counted per year at Hillsdale (USC00203823): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Hillsdale Thresholds

Hillsdale: days with a maximum temperature at or above 30 C (86 F) in 119 years, most in 1934 with 66.
Hillsdale: days with a maximum temperature at or below 0 C (32 F) in 119 years, most in 2014 with 85.
Hillsdale: nights with a minimum temperature at or below 0 C (32 F) in 119 years, most in 1944 with 168.
Hillsdale: nights with a minimum temperature at or below -10 C (14 F) in 119 years, most in 2014 with 68.
18 fixed thresholds have at least one qualifying day at Hillsdale.

Days at or above 30 C (86 F)

119 years with a qualifying day

Days per year at Hillsdale with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 66 in 1934.

Days at or above 30 C (86 F) per year at Hillsdale
Year	Days	Decade average
1898	35	37
1899	39	37
1900	38	23.3
1901	44	23.3
1902	19	23.3
1903	19	23.3
1904	10	23.3
1907	2	23.3
1908	38	23.3
1909	16	23.3
1910	30	32.8
1911	37	32.8
1912	26	32.8
1913	48	32.8
1914	47	32.8
1915	8	32.8
1916	47	32.8
1917	16	32.8
1918	36	32.8
1920	25	34.8
1921	57	34.8
1922	49	34.8
1923	36	34.8
1924	16	34.8
1925	40	34.8
1926	30	34.8
1927	21	34.8
1928	34	34.8
1929	40	34.8
1930	49	47.8
1931	53	47.8
1932	38	47.8
1933	61	47.8
1934	66	47.8
1935	38	47.8
1936	58	47.8
1937	39	47.8
1938	32	47.8
1939	44	47.8
1940	43	41.4
1941	64	41.4
1942	32	41.4
1943	27	41.4
1944	53	41.4
1945	29	41.4
1946	48	41.4
1947	44	41.4
1948	31	41.4
1949	43	41.4
1950	10	27.7
1951	12	27.7
1952	45	27.7
1953	42	27.7
1954	30	27.7
1955	48	27.7
1956	24	27.7
1957	22	27.7
1958	4	27.7
1959	40	27.7
1960	11	23.3
1961	20	23.3
1962	24	23.3
1963	27	23.3
1964	39	23.3
1965	18	23.3
1966	33	23.3
1967	14	23.3
1968	27	23.3
1969	20	23.3
1970	24	22
1971	27	22
1972	15	22
1973	21	22
1974	18	22
1975	28	22
1976	22	22
1977	30	22
1978	23	22
1979	12	22
1980	18	28.3
1981	10	28.3
1982	23	28.3
1983	53	28.3
1984	37	28.3
1985	21	28.3
1986	22	28.3
1987	30	28.3
1988	53	28.3
1989	16	28.3
1990	14	21.1
1991	39	21.1
1992	7	21.1
1993	16	21.1
1994	20	21.1
1995	33	21.1
1996	17	21.1
1997	11	21.1
1998	33	21.1
2000	9	17
2001	12	17
2002	40	17
2009	7	17
2010	39	29.3
2011	36	29.3
2012	48	29.3
2013	21	29.3
2014	10	29.3
2015	16	29.3
2016	35	29.3
2017	25	29.3
2018	37	29.3
2019	26	29.3
2020	36	33.3
2021	35	33.3
2022	25	33.3
2023	28	33.3
2024	35	33.3
2025	45	33.3
2026	29	33.3

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

First to last qualifying date each year at Hillsdale
Year	First date	Last date
1898	1898-06-06	1898-09-04
1899	1899-04-29	1899-09-16
1900	1900-05-14	1900-10-05
1901	1901-06-12	1901-09-07
1902	1902-05-19	1902-08-30
1903	1903-05-17	1903-09-15
1904	1904-05-25	1904-09-11
1907	1907-08-10	1907-08-11
1908	1908-05-25	1908-09-26
1909	1909-06-27	1909-09-14
1910	1910-06-15	1910-08-24
1911	1911-05-16	1911-09-02
1912	1912-05-23	1912-09-10
1913	1913-06-06	1913-09-07
1914	1914-05-25	1914-09-21
1915	1915-04-26	1915-09-16
1916	1916-05-26	1916-09-12
1917	1917-06-12	1917-08-20
1918	1918-05-25	1918-08-27
1920	1920-06-08	1920-09-26
1921	1921-05-21	1921-09-29
1922	1922-06-07	1922-10-06
1923	1923-06-01	1923-09-27
1924	1924-06-19	1924-09-21
1925	1925-04-23	1925-09-11
1926	1926-05-07	1926-09-19
1927	1927-06-29	1927-09-17
1928	1928-07-03	1928-10-11
1929	1929-05-27	1929-09-28
1930	1930-04-11	1930-09-14
1931	1931-05-18	1931-09-23
1932	1932-05-15	1932-09-19
1933	1933-06-02	1933-09-24
1934	1934-05-19	1934-10-11
1935	1935-06-13	1935-09-25
1936	1936-05-07	1936-09-22
1937	1937-05-31	1937-10-01
1938	1938-05-03	1938-09-12
1939	1939-05-19	1939-10-08
1940	1940-05-13	1940-09-20
1941	1941-05-05	1941-09-24
1942	1942-04-30	1942-09-14
1943	1943-06-12	1943-09-01
1944	1944-05-26	1944-09-19
1945	1945-06-14	1945-09-23
1946	1946-06-11	1946-10-07
1947	1947-06-10	1947-10-15
1948	1948-06-03	1948-09-19
1949	1949-05-04	1949-08-27
1950	1950-06-08	1950-08-28
1951	1951-05-20	1951-10-04
1952	1952-05-05	1952-09-13
1953	1953-05-30	1953-10-03
1954	1954-06-09	1954-09-06
1955	1955-06-05	1955-09-19
1956	1956-06-10	1956-09-13
1957	1957-06-16	1957-09-01
1958	1958-07-02	1958-08-30
1959	1959-05-05	1959-09-09
1960	1960-07-22	1960-09-08
1961	1961-06-11	1961-09-11
1962	1962-05-14	1962-09-13
1963	1963-05-09	1963-10-07
1964	1964-05-22	1964-09-10
1965	1965-05-26	1965-09-19
1966	1966-05-27	1966-09-03
1967	1967-06-12	1967-09-16
1968	1968-06-07	1968-08-24
1969	1969-05-29	1969-09-06
1970	1970-06-09	1970-09-21
1971	1971-05-18	1971-10-02
1972	1972-05-24	1972-09-17
1973	1973-06-10	1973-09-04
1974	1974-06-20	1974-08-26
1975	1975-05-19	1975-08-24
1976	1976-06-11	1976-09-09
1977	1977-05-18	1977-09-01
1978	1978-05-28	1978-09-21
1979	1979-06-05	1979-08-31
1980	1980-06-25	1980-09-23
1981	1981-06-16	1981-07-19
1982	1982-05-14	1982-09-14
1983	1983-06-11	1983-09-11
1984	1984-05-19	1984-09-03
1985	1985-05-26	1985-09-10
1986	1986-06-01	1986-09-27
1987	1987-05-22	1987-07-31
1988	1988-05-16	1988-08-18
1989	1989-06-24	1989-08-06
1990	1990-04-26	1990-09-08
1991	1991-05-13	1991-09-16
1992	1992-06-14	1992-08-26
1993	1993-07-05	1993-08-31
1994	1994-05-23	1994-09-17
1995	1995-06-17	1995-09-07
1996	1996-05-19	1996-08-23
1997	1997-06-25	1997-08-17
1998	1998-05-15	1998-09-27
2000	2000-06-02	2000-09-04
2001	2001-06-14	2001-09-08
2002	2002-06-02	2002-09-15
2009	2009-06-25	2009-08-17
2010	2010-05-27	2010-09-24
2011	2011-05-13	2011-09-04
2012	2012-03-22	2012-09-04
2013	2013-05-21	2013-09-12
2014	2014-05-09	2014-09-06
2015	2015-05-09	2015-09-09
2016	2016-05-30	2016-09-23
2017	2017-05-19	2017-09-27
2018	2018-05-26	2018-09-21
2019	2019-06-27	2019-10-02
2020	2020-05-25	2020-09-04
2021	2021-05-20	2021-09-14
2022	2022-05-12	2022-08-29
2023	2023-05-29	2023-10-03
2024	2024-05-19	2024-09-23
2025	2025-06-04	2025-10-06
2026	2026-05-18	2026-09-01

Every Fixed Threshold

Fixed thresholds at Hillsdale
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	119	66	1934	29
35 C (95 F): Days	55	20	1934	2
40 C (104 F): Days	4	4	1934	1
90 F (32.2 C): Days	115	45	1934	9
100 F (37.8 C): Days	12	8	1934	3
0 C (32 F): Ice days (max	119	85	2014	37
0 C (32 F): Frost days (min	119	168	1944	84
-10 C (14 F): Days with min	119	68	2014	33
-20 C (-4 F): Days with min	101	23	2014	6
-30 C (-22 F): Days with min	1	1	1994	1
20 C (68 F): Tropical nights (min	118	24	1921	13
25 C (77 F): Days with min	8	2	1918	1
10 mm (0.39 in): Days with 10 mm or more rain	119	44	1975	26
25 mm (0.98 in): Days with 25 mm or more rain	119	15	2000	3
50 mm (1.97 in): Days with 50 mm or more rain	79	4	2000	1
100 mm (3.94 in): Days with 100 mm or more rain	4	1	1937	1
10 cm (3.9 in): Days with 10 cm or more snowfall	94	7	1903	2
25 cm (9.8 in): Days with 25 cm or more snowfall	12	2	1973	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 Hillsdale 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).

Hillsdale Threshold Days by Year (USC00203823)

Key Facts for Hillsdale Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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