Halsey 2 W Threshold Days by Year (USC00253540)

20 fixed thresholds counted per year at Halsey 2 W (USC00253540): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Halsey 2 W Thresholds

Halsey 2 W: days with 10 mm (0.39 in) or more of precipitation in 84 years, most in 1915 with 28.
Halsey 2 W: nights with a minimum temperature at or below 0 C (32 F) in 83 years, most in 1917 with 197.
Halsey 2 W: nights with a minimum temperature at or below -10 C (14 F) in 83 years, most in 1978 with 99.
Halsey 2 W: nights with a minimum temperature at or below -20 C (-4 F) in 83 years, most in 1978 with 37.
20 fixed thresholds have at least one qualifying day at Halsey 2 W.

Days at or above 30 C (86 F)

81 years with a qualifying day

Days per year at Halsey 2 W with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 103 in 1953.

Days at or above 30 C (86 F) per year at Halsey 2 W
Year	Days	Decade average
1904	58	70.4
1905	58	70.4
1906	65	70.4
1908	85	70.4
1909	86	70.4
1910	81	69.1
1911	83	69.1
1912	55	69.1
1913	89	69.1
1914	76	69.1
1915	25	69.1
1916	70	69.1
1917	52	69.1
1918	85	69.1
1919	75	69.1
1920	58	59.4
1921	83	59.4
1922	78	59.4
1924	50	59.4
1925	65	59.4
1926	60	59.4
1927	43	59.4
1928	41	59.4
1929	57	59.4
1930	50	65.3
1931	71	65.3
1932	59	65.3
1933	76	65.3
1934	90	65.3
1935	58	65.3
1936	71	65.3
1937	66	65.3
1938	47	65.3
1939	65	65.3
1940	48	58.7
1941	59	58.7
1942	39	58.7
1943	53	58.7
1944	47	58.7
1945	60	58.7
1947	70	58.7
1948	83	58.7
1949	69	58.7
1950	58	78.7
1951	40	78.7
1952	86	78.7
1953	103	78.7
1954	92	78.7
1955	93	78.7
1956	102	78.7
1957	70	78.7
1958	64	78.7
1959	79	78.7
1960	71	71
1961	72	71
1962	55	71
1963	85	71
1964	77	71
1965	56	71
1966	78	71
1967	64	71
1968	79	71
1969	73	71
1970	93	70.5
1971	78	70.5
1972	64	70.5
1973	66	70.5
1974	64	70.5
1975	74	70.5
1976	69	70.5
1977	63	70.5
1978	73	70.5
1979	61	70.5
1980	87	65.9
1981	67	65.9
1982	53	65.9
1983	74	65.9
1984	71	65.9
1985	71	65.9
1987	55	65.9
1988	49	65.9

For each year, a bar from the first to the last day at Halsey 2 W meeting 30 C (86 F).

First to last qualifying date each year at Halsey 2 W
Year	First date	Last date
1904	1904-05-22	1904-10-04
1905	1905-06-03	1905-10-07
1906	1906-04-23	1906-10-12
1908	1908-04-12	1908-10-15
1909	1909-04-17	1909-10-06
1910	1910-03-21	1910-10-17
1911	1911-05-08	1911-09-22
1912	1912-05-25	1912-10-04
1913	1913-04-30	1913-10-13
1914	1914-05-09	1914-10-17
1915	1915-05-11	1915-10-10
1916	1916-04-11	1916-10-03
1917	1917-05-16	1917-09-08
1918	1918-05-03	1918-10-16
1919	1919-06-12	1919-09-26
1920	1920-05-24	1920-09-21
1921	1921-04-23	1921-10-22
1922	1922-05-09	1922-10-04
1924	1924-04-23	1924-10-01
1925	1925-04-21	1925-09-19
1926	1926-04-29	1926-09-06
1927	1927-04-26	1927-09-16
1928	1928-05-01	1928-10-10
1929	1929-05-14	1929-09-22
1930	1930-04-09	1930-09-22
1931	1931-05-15	1931-10-06
1932	1932-05-13	1932-09-18
1933	1933-05-18	1933-09-29
1934	1934-04-29	1934-10-07
1935	1935-06-09	1935-09-23
1936	1936-05-05	1936-09-22
1937	1937-05-28	1937-09-21
1938	1938-05-28	1938-10-05
1939	1939-04-23	1939-09-23
1940	1940-05-12	1940-08-31
1941	1941-05-13	1941-09-20
1942	1942-05-26	1942-10-07
1943	1943-03-30	1943-09-18
1944	1944-05-14	1944-09-26
1945	1945-05-19	1945-10-16
1947	1947-06-07	1947-10-21
1948	1948-04-17	1948-09-21
1949	1949-04-25	1949-09-26
1950	1950-04-23	1950-10-31
1951	1951-06-17	1951-10-11
1952	1952-04-08	1952-10-01
1953	1953-04-21	1953-10-18
1954	1954-04-06	1954-10-08
1955	1955-04-26	1955-10-19
1956	1956-05-12	1956-10-12
1957	1957-05-07	1957-10-01
1958	1958-04-16	1958-10-19
1959	1959-04-30	1959-09-14
1960	1960-04-21	1960-09-20
1961	1961-05-28	1961-10-16
1962	1962-04-20	1962-10-14
1963	1963-04-01	1963-10-19
1964	1964-04-16	1964-10-15
1965	1965-04-30	1965-10-09
1966	1966-05-04	1966-10-08
1967	1967-05-09	1967-10-12
1968	1968-03-30	1968-10-30
1969	1969-05-14	1969-09-24
1970	1970-05-17	1970-10-05
1971	1971-06-10	1971-10-10
1972	1972-05-15	1972-10-01
1973	1973-05-18	1973-10-06
1974	1974-05-19	1974-10-10
1975	1975-05-04	1975-10-06
1976	1976-05-19	1976-10-02
1977	1977-04-09	1977-09-08
1978	1978-05-10	1978-10-20
1979	1979-05-06	1979-09-30
1980	1980-04-20	1980-10-09
1981	1981-04-25	1981-09-24
1982	1982-05-09	1982-09-22
1983	1983-05-27	1983-09-28
1984	1984-05-31	1984-09-21
1985	1985-04-11	1985-09-18
1987	1987-04-18	1987-09-04
1988	1988-04-08	1988-09-26

Every Fixed Threshold

Fixed thresholds at Halsey 2 W
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	81	103	1953	49
35 C (95 F): Days	81	42	1952	8
40 C (104 F): Days	33	9	1954	2
45 C (113 F): Days	1	1	1954	1
90 F (32.2 C): Days	81	70	1956	30
100 F (37.8 C): Days	67	20	1952	1
110 F (43.3 C): Days	1	3	1954	3
0 C (32 F): Ice days (max	81	70	1978	42
0 C (32 F): Frost days (min	83	197	1917	160
-10 C (14 F): Days with min	83	99	1978	60
-20 C (-4 F): Days with min	83	37	1978	21
-30 C (-22 F): Days with min	39	7	1936	2
20 C (68 F): Tropical nights (min	73	23	1936	13
25 C (77 F): Days with min	6	1	1908	1
10 mm (0.39 in): Days with 10 mm or more rain	84	28	1915	19
25 mm (0.98 in): Days with 25 mm or more rain	83	13	1915	8
50 mm (1.97 in): Days with 50 mm or more rain	41	3	1905	3
100 mm (3.94 in): Days with 100 mm or more rain	2	1	1910	1
10 cm (3.9 in): Days with 10 cm or more snowfall	67	7	1961	3
25 cm (9.8 in): Days with 25 cm or more snowfall	21	2	1927	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1904.

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Data for Halsey 2 W 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).

Halsey 2 W Threshold Days by Year (USC00253540)

Key Facts for Halsey 2 W Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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