Mahinahina 466 Threshold Days by Year

5 fixed thresholds counted per year at Mahinahina 466 (USC00515715): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Mahinahina 466 Thresholds

Mahinahina 466: days with 10 mm (0.39 in) or more of precipitation in 72 years, most in 2018 with 64.
Mahinahina 466: days with 25 mm (0.98 in) or more of precipitation in 72 years, most in 2014 with 24.
Mahinahina 466: days with 50 mm (1.97 in) or more of precipitation in 68 years, most in 1927 with 10.
Mahinahina 466: days with 100 mm (3.94 in) or more of precipitation in 27 years, most in 1924 with 3.
5 fixed thresholds have at least one qualifying day at Mahinahina 466.

Days with 10 mm (0.39 in) or more of precipitation

72 years with a qualifying day

Days per year at Mahinahina 466 with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 64 in 2018.

Days with 10 mm (0.39 in) or more of precipitation per year at Mahinahina 466
Year	Days	Decade average
1920	29	39.7
1921	39	39.7
1922	35	39.7
1923	54	39.7
1924	46	39.7
1925	40	39.7
1926	18	39.7
1927	44	39.7
1928	42	39.7
1929	50	39.7
1932	35	35.3
1933	20	35.3
1935	28	35.3
1936	37	35.3
1937	46	35.3
1938	38	35.3
1939	43	35.3
1940	39	31.6
1941	37	31.6
1942	40	31.6
1943	33	31.6
1944	26	31.6
1945	20	31.6
1946	41	31.6
1947	22	31.6
1948	38	31.6
1949	20	31.6
1950	49	29.4
1951	27	29.4
1952	19	29.4
1956	25	29.4
1957	29	29.4
1958	32	29.4
1959	25	29.4
1960	25	31.1
1961	28	31.1
1962	16	31.1
1963	27	31.1
1964	27	31.1
1965	33	31.1
1966	24	31.1
1967	39	31.1
1968	46	31.1
1969	46	31.1
1970	32	24.7
1971	20	24.7
1973	23	24.7
1974	23	24.7
1975	15	24.7
1976	24	24.7
1977	28	24.7
1978	26	24.7
1979	31	24.7
1980	30	24
1981	18	24
2005	63	45.8
2006	38	45.8
2007	48	45.8
2008	44	45.8
2009	36	45.8
2010	43	49.1
2011	45	49.1
2012	45	49.1
2013	35	49.1
2014	63	49.1
2016	54	49.1
2017	48	49.1
2018	64	49.1
2019	45	49.1
2020	35	29.3
2021	34	29.3
2025	19	29.3

For each year, a bar from the first to the last day at Mahinahina 466 meeting 10 mm (0.39 in).

First to last qualifying date each year at Mahinahina 466
Year	First date	Last date
1920	1920-01-17	1920-12-25
1921	1921-01-04	1921-12-25
1922	1922-01-04	1922-11-25
1923	1923-01-11	1923-12-31
1924	1924-01-03	1924-12-21
1925	1925-01-07	1925-12-31
1926	1926-01-21	1926-11-14
1927	1927-01-02	1927-12-27
1928	1928-01-11	1928-12-25
1929	1929-01-13	1929-12-28
1932	1932-01-12	1932-12-31
1933	1933-01-01	1933-12-24
1935	1935-01-06	1935-12-13
1936	1936-01-30	1936-12-31
1937	1937-01-09	1937-12-29
1938	1938-01-08	1938-12-24
1939	1939-01-06	1939-12-30
1940	1940-01-07	1940-12-24
1941	1941-01-01	1941-12-11
1942	1942-02-06	1942-12-29
1943	1943-01-04	1943-12-29
1944	1944-01-06	1944-12-27
1945	1945-02-27	1945-12-03
1946	1946-01-12	1946-12-31
1947	1947-01-03	1947-12-19
1948	1948-01-04	1948-12-31
1949	1949-01-07	1949-12-19
1950	1950-01-01	1950-12-30
1951	1951-01-01	1951-12-14
1952	1952-01-01	1952-12-18
1956	1956-01-12	1956-12-07
1957	1957-01-16	1957-12-29
1958	1958-01-29	1958-12-30
1959	1959-01-09	1959-12-18
1960	1960-01-08	1960-12-29
1961	1961-01-02	1961-11-23
1962	1962-01-08	1962-12-18
1963	1963-01-07	1963-12-28
1964	1964-01-01	1964-12-23
1965	1965-01-07	1965-12-20
1966	1966-01-20	1966-12-29
1967	1967-01-04	1967-12-29
1968	1968-01-03	1968-12-30
1969	1969-01-03	1969-12-28
1970	1970-01-04	1970-12-27
1971	1971-01-05	1971-11-10
1973	1973-01-01	1973-12-30
1974	1974-01-04	1974-12-20
1975	1975-01-12	1975-11-28
1976	1976-01-16	1976-11-25
1977	1977-02-16	1977-12-19
1978	1978-01-02	1978-12-07
1979	1979-01-10	1979-12-26
1980	1980-01-03	1980-12-26
1981	1981-01-05	1981-12-28
2005	2005-01-02	2005-12-10
2006	2006-01-10	2006-12-29
2007	2007-01-05	2007-12-31
2008	2008-01-01	2008-12-30
2009	2009-01-11	2009-12-04
2010	2010-01-08	2010-12-11
2011	2011-01-11	2011-12-29
2012	2012-02-08	2012-12-24
2013	2013-01-02	2013-12-29
2014	2014-01-03	2014-12-24
2016	2016-01-06	2016-12-28
2017	2017-01-02	2017-12-27
2018	2018-01-21	2018-12-31
2019	2019-01-26	2019-12-26
2020	2020-01-04	2020-12-27
2021	2021-01-01	2021-12-23
2025	2025-02-03	2025-07-21

Every Fixed Threshold

Fixed thresholds at Mahinahina 466
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
10 mm (0.39 in): Days with 10 mm or more rain	72	64	2018	19
25 mm (0.98 in): Days with 25 mm or more rain	72	24	2014	4
50 mm (1.97 in): Days with 50 mm or more rain	68	10	1927	1
100 mm (3.94 in): Days with 100 mm or more rain	27	3	1924	1
200 mm (7.87 in): Days with 200 mm or more rain	3	1	1923	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1920.

Download the Data

Data for Mahinahina 466 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 2026-10-15 (15 October 2026). Threshold counts are computed by this site.

Data as of 2025-12-31. Last revised 31 December 2025 (2025-12-31).

Mahinahina 466 Threshold Days by Year

Key Facts for Mahinahina 466 Thresholds

Days with 10 mm (0.39 in) or more of precipitation

Every Fixed Threshold

Download the Data

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