Pacific Threshold Days by Year (USC00236468)

7 fixed thresholds counted per year at Pacific (USC00236468): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Pacific Thresholds

Pacific: days with 10 mm (0.39 in) or more of precipitation in 76 years, most in 1951 with 46.
Pacific: days with 25 mm (0.98 in) or more of precipitation in 76 years, most in 1993 with 20.
Pacific: days with 50 mm (1.97 in) or more of precipitation in 64 years, most in 1957 with 6.
Pacific: days with 10 cm (3.9 in) or more of snowfall in 37 years, most in 1978 with 6.
7 fixed thresholds have at least one qualifying day at Pacific.

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

76 years with a qualifying day

Days per year at Pacific with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 46 in 1951.

Days with 10 mm (0.39 in) or more of precipitation per year at Pacific
Year	Days	Decade average
1920	23	34.8
1921	37	34.8
1922	30	34.8
1923	38	34.8
1924	37	34.8
1925	30	34.8
1926	37	34.8
1927	41	34.8
1928	34	34.8
1929	41	34.8
1930	26	33.6
1931	33	33.6
1932	29	33.6
1938	39	33.6
1939	41	33.6
1940	22	35.4
1941	37	35.4
1942	41	35.4
1943	33	35.4
1944	34	35.4
1945	41	35.4
1946	35	35.4
1947	32	35.4
1948	42	35.4
1949	37	35.4
1950	43	34.8
1951	46	34.8
1952	29	34.8
1953	25	34.8
1954	33	34.8
1955	29	34.8
1956	39	34.8
1957	40	34.8
1958	33	34.8
1959	31	34.8
1960	30	33.3
1961	39	33.3
1962	35	33.3
1963	27	33.3
1964	28	33.3
1965	31	33.3
1966	32	33.3
1967	42	33.3
1968	27	33.3
1969	42	33.3
1970	41	33
1971	27	33
1972	31	33
1973	44	33
1974	32	33
1975	36	33
1976	23	33
1977	39	33
1978	31	33
1979	26	33
1980	25	31.6
1981	36	31.6
1982	36	31.6
1983	34	31.6
1984	31	31.6
1987	31	31.6
1988	30	31.6
1989	30	31.6
1990	44	38.2
1991	34	38.2
1992	31	38.2
1993	45	38.2
1994	39	38.2
1995	34	38.2
1996	36	38.2
1997	40	38.2
1998	41	38.2
2006	23	28.7
2007	26	28.7
2008	37	28.7
2010	33	33

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

First to last qualifying date each year at Pacific
Year	First date	Last date
1920	1920-01-08	1920-12-21
1921	1921-03-07	1921-12-24
1922	1922-01-05	1922-12-28
1923	1923-01-14	1923-12-20
1924	1924-01-16	1924-12-19
1925	1925-02-09	1925-12-04
1926	1926-01-03	1926-11-18
1927	1927-01-13	1927-12-14
1928	1928-01-24	1928-12-17
1929	1929-01-05	1929-12-18
1930	1930-01-02	1930-11-30
1931	1931-02-07	1931-12-30
1932	1932-01-22	1932-12-31
1938	1938-02-10	1938-12-23
1939	1939-01-05	1939-12-27
1940	1940-01-07	1940-12-16
1941	1941-01-01	1941-12-26
1942	1942-01-01	1942-12-29
1943	1943-01-31	1943-12-29
1944	1944-01-27	1944-12-06
1945	1945-02-17	1945-12-19
1946	1946-01-09	1946-12-29
1947	1947-01-04	1947-11-15
1948	1948-01-01	1948-12-15
1949	1949-01-04	1949-12-22
1950	1950-01-02	1950-12-06
1951	1951-01-11	1951-12-14
1952	1952-02-02	1952-12-20
1953	1953-01-02	1953-12-06
1954	1954-01-20	1954-12-29
1955	1955-02-19	1955-10-28
1956	1956-01-30	1956-12-20
1957	1957-01-22	1957-12-31
1958	1958-01-21	1958-12-05
1959	1959-01-21	1959-12-18
1960	1960-01-18	1960-12-11
1961	1961-02-03	1961-12-17
1962	1962-01-06	1962-12-29
1963	1963-01-07	1963-11-23
1964	1964-02-06	1964-12-03
1965	1965-01-09	1965-12-25
1966	1966-01-01	1966-12-08
1967	1967-01-26	1967-12-22
1968	1968-01-14	1968-12-28
1969	1969-01-16	1969-12-30
1970	1970-02-14	1970-12-31
1971	1971-01-04	1971-12-30
1972	1972-01-27	1972-12-30
1973	1973-01-04	1973-12-31
1974	1974-01-10	1974-12-31
1975	1975-01-10	1975-12-15
1976	1976-01-25	1976-11-26
1977	1977-01-06	1977-12-14
1978	1978-01-16	1978-11-26
1979	1979-01-20	1979-12-25
1980	1980-02-15	1980-10-28
1981	1981-02-01	1981-12-23
1982	1982-01-03	1982-12-24
1983	1983-02-02	1983-12-11
1984	1984-01-10	1984-12-30
1987	1987-01-10	1987-12-28
1988	1988-01-19	1988-12-28
1989	1989-01-01	1989-11-15
1990	1990-01-20	1990-12-30
1991	1991-01-11	1991-12-21
1992	1992-02-12	1992-12-16
1993	1993-01-04	1993-12-02
1994	1994-01-17	1994-12-22
1995	1995-01-06	1995-12-20
1996	1996-01-03	1996-12-24
1997	1997-01-09	1997-12-24
1998	1998-01-05	1998-11-10
2006	2006-01-29	2006-12-21
2007	2007-01-13	2007-11-26
2008	2008-01-08	2008-12-24
2010	2010-01-22	2010-12-11

Every Fixed Threshold

Fixed thresholds at Pacific
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	76	46	1951	33
25 mm (0.98 in): Days with 25 mm or more rain	76	20	1993	9
50 mm (1.97 in): Days with 50 mm or more rain	64	6	1957	4
100 mm (3.94 in): Days with 100 mm or more rain	7	2	1957	1
200 mm (7.87 in): Days with 200 mm or more rain	1	1	1957	1
10 cm (3.9 in): Days with 10 cm or more snowfall	37	6	1978	1
25 cm (9.8 in): Days with 25 cm or more snowfall	3	1	1951	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 Pacific 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).

Pacific Threshold Days by Year (USC00236468)

Key Facts for Pacific Thresholds

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

Every Fixed Threshold

Download the Data

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