Kahuku 912 Threshold Days by Year

10 fixed thresholds counted per year at Kahuku 912 (USC00512570): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Kahuku 912 Thresholds

Kahuku 912: nights with a minimum temperature at or above 20 C (68 F) in 58 years, most in 2021 with 293.
Kahuku 912: days with a maximum temperature at or above 30 C (86 F) in 56 years, most in 2020 with 175.
Kahuku 912: days with 10 mm (0.39 in) or more of precipitation in 48 years, most in 1965 with 42.
Kahuku 912: days with 25 mm (0.98 in) or more of precipitation in 48 years, most in 1965 with 23.
10 fixed thresholds have at least one qualifying day at Kahuku 912.

Days at or above 30 C (86 F)

56 years with a qualifying day

Days per year at Kahuku 912 with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 175 in 2020.

Days at or above 30 C (86 F) per year at Kahuku 912
Year	Days	Decade average
1907	5	5
1910	1	47.3
1911	1	47.3
1912	9	47.3
1913	52	47.3
1914	15	47.3
1916	52	47.3
1917	101	47.3
1918	70	47.3
1919	125	47.3
1921	106	39.2
1922	25	39.2
1923	71	39.2
1924	4	39.2
1925	12	39.2
1926	49	39.2
1927	9	39.2
1928	1	39.2
1929	76	39.2
1930	12	16.3
1931	13	16.3
1932	22	16.3
1934	31	16.3
1935	19	16.3
1937	15	16.3
1939	2	16.3
1940	13	24.2
1941	4	24.2
1942	6	24.2
1943	27	24.2
1944	1	24.2
1945	22	24.2
1946	37	24.2
1947	43	24.2
1948	17	24.2
1949	72	24.2
1950	12	13
1951	41	13
1952	3	13
1953	17	13
1954	6	13
1955	1	13
1956	3	13
1957	10	13
1958	1	13
1959	36	13
1960	30	14.7
1961	1	14.7
1962	16	14.7
1963	17	14.7
1964	6	14.7
1965	18	14.7
2020	175	84
2021	65	84
2022	54	84
2023	42	84

For each year, a bar from the first to the last day at Kahuku 912 meeting 30 C (86 F).

First to last qualifying date each year at Kahuku 912
Year	First date	Last date
1907	1907-05-27	1907-12-15
1910	1910-09-19	1910-09-19
1911	1911-10-31	1911-10-31
1912	1912-08-23	1912-12-17
1913	1913-07-20	1913-12-30
1914	1914-01-19	1914-12-25
1916	1916-09-01	1916-12-26
1917	1917-02-01	1917-11-15
1918	1918-07-29	1918-11-24
1919	1919-06-09	1919-12-15
1921	1921-01-05	1921-12-11
1922	1922-06-09	1922-10-21
1923	1923-05-10	1923-11-25
1924	1924-06-10	1924-09-22
1925	1925-07-23	1925-10-26
1926	1926-04-11	1926-11-19
1927	1927-08-26	1927-11-13
1928	1928-08-31	1928-08-31
1929	1929-07-08	1929-12-22
1930	1930-08-01	1930-11-11
1931	1931-03-19	1931-09-19
1932	1932-08-16	1932-11-16
1934	1934-07-19	1934-10-17
1935	1935-03-08	1935-11-19
1937	1937-08-24	1937-11-16
1939	1939-10-02	1939-10-14
1940	1940-07-19	1940-10-24
1941	1941-08-18	1941-10-28
1942	1942-09-17	1942-10-20
1943	1943-05-15	1943-10-29
1944	1944-10-10	1944-10-10
1945	1945-02-07	1945-10-20
1946	1946-02-25	1946-10-16
1947	1947-05-18	1947-10-23
1948	1948-06-18	1948-09-20
1949	1949-08-18	1949-10-31
1950	1950-07-17	1950-11-06
1951	1951-03-10	1951-10-29
1952	1952-08-02	1952-10-16
1953	1953-08-16	1953-10-21
1954	1954-02-02	1954-10-04
1955	1955-07-21	1955-07-21
1956	1956-10-05	1956-10-17
1957	1957-05-11	1957-12-03
1958	1958-09-30	1958-09-30
1959	1959-07-14	1959-10-25
1960	1960-07-19	1960-10-20
1961	1961-04-11	1961-04-11
1962	1962-01-22	1962-12-10
1963	1963-02-10	1963-12-10
1964	1964-08-30	1964-11-30
1965	1965-03-22	1965-10-21
2020	2020-01-28	2020-12-29
2021	2021-01-08	2021-11-14
2022	2022-01-11	2022-12-24
2023	2023-01-19	2023-11-20

Every Fixed Threshold

Fixed thresholds at Kahuku 912
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	56	175	2020	42
35 C (95 F): Days	1	1	1916	1
90 F (32.2 C): Days	12	13	1916	1
20 C (68 F): Tropical nights (min	58	293	2021	281
25 C (77 F): Days with min	20	7	2023	7
10 mm (0.39 in): Days with 10 mm or more rain	48	42	1965	2
25 mm (0.98 in): Days with 25 mm or more rain	48	23	1965	1
50 mm (1.97 in): Days with 50 mm or more rain	44	10	1965	10
100 mm (3.94 in): Days with 100 mm or more rain	20	4	1965	4
200 mm (7.87 in): Days with 200 mm or more rain	1	1	1909	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1907.

Download the Data

Data for Kahuku 912 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).

Kahuku 912 Threshold Days by Year

Key Facts for Kahuku 912 Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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