Chimacum 4 S Threshold Days by Year (USC00451414)

5 fixed thresholds counted per year at Chimacum 4 S (USC00451414): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Chimacum 4 S Thresholds

Chimacum 4 S: days with 10 mm (0.39 in) or more of precipitation in 94 years, most in 1954 with 32.
Chimacum 4 S: days with 25 mm (0.98 in) or more of precipitation in 86 years, most in 1999 with 11.
Chimacum 4 S: days with 50 mm (1.97 in) or more of precipitation in 17 years, most in 1982 with 2.
Chimacum 4 S: days with 10 cm (3.9 in) or more of snowfall in 15 years, most in 1965 with 4.
5 fixed thresholds have at least one qualifying day at Chimacum 4 S.

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

94 years with a qualifying day

Days per year at Chimacum 4 S with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 32 in 1954.

Days with 10 mm (0.39 in) or more of precipitation per year at Chimacum 4 S
Year	Days	Decade average
1927	29	29
1930	9	16.9
1931	19	16.9
1932	11	16.9
1933	29	16.9
1934	16	16.9
1935	11	16.9
1936	17	16.9
1937	23	16.9
1938	16	16.9
1939	18	16.9
1940	20	19.8
1941	13	19.8
1942	22	19.8
1943	14	19.8
1945	18	19.8
1946	21	19.8
1947	22	19.8
1948	29	19.8
1949	19	19.8
1950	26	25.3
1951	27	25.3
1952	21	25.3
1953	21	25.3
1954	32	25.3
1955	28	25.3
1956	25	25.3
1957	31	25.3
1958	21	25.3
1959	21	25.3
1960	24	21.4
1961	23	21.4
1962	15	21.4
1963	21	21.4
1964	18	21.4
1965	18	21.4
1966	27	21.4
1967	23	21.4
1968	25	21.4
1969	20	21.4
1970	24	20.9
1971	26	20.9
1972	26	20.9
1973	22	20.9
1974	18	20.9
1975	26	20.9
1976	11	20.9
1977	16	20.9
1978	19	20.9
1979	21	20.9
1980	18	19.6
1981	27	19.6
1982	23	19.6
1983	32	19.6
1984	24	19.6
1985	13	19.6
1986	17	19.6
1987	16	19.6
1988	13	19.6
1989	13	19.6
1990	21	23.8
1991	15	23.8
1992	24	23.8
1993	21	23.8
1994	17	23.8
1995	30	23.8
1996	25	23.8
1997	22	23.8
1998	32	23.8
1999	31	23.8
2000	9	17.6
2001	20	17.6
2002	20	17.6
2003	18	17.6
2004	14	17.6
2005	18	17.6
2006	30	17.6
2007	10	17.6
2008	16	17.6
2009	21	17.6
2010	25	20.2
2011	24	20.2
2012	27	20.2
2013	9	20.2
2014	18	20.2
2015	18	20.2
2016	25	20.2
2017	20	20.2
2018	23	20.2
2019	13	20.2
2020	21	17.3
2021	19	17.3
2022	22	17.3
2026	7	17.3

For each year, a bar from the first to the last day at Chimacum 4 S meeting 10 mm (0.39 in).

First to last qualifying date each year at Chimacum 4 S
Year	First date	Last date
1927	1927-01-01	1927-12-12
1930	1930-02-13	1930-12-12
1931	1931-01-22	1931-12-26
1932	1932-01-11	1932-12-22
1933	1933-01-05	1933-12-26
1934	1934-01-22	1934-12-28
1935	1935-01-21	1935-12-11
1936	1936-01-11	1936-12-22
1937	1937-02-04	1937-12-29
1938	1938-01-12	1938-11-30
1939	1939-01-01	1939-12-16
1940	1940-01-01	1940-12-19
1941	1941-04-01	1941-12-22
1942	1942-01-26	1942-12-29
1943	1943-01-20	1943-11-30
1945	1945-02-04	1945-12-22
1946	1946-01-04	1946-12-12
1947	1947-01-10	1947-12-23
1948	1948-01-01	1948-12-29
1949	1949-02-04	1949-12-30
1950	1950-01-10	1950-12-15
1951	1951-01-02	1951-12-18
1952	1952-01-05	1952-12-30
1953	1953-01-07	1953-12-06
1954	1954-01-02	1954-12-29
1955	1955-02-08	1955-12-26
1956	1956-01-01	1956-12-03
1957	1957-01-10	1957-12-28
1958	1958-01-12	1958-12-25
1959	1959-01-07	1959-12-20
1960	1960-01-28	1960-12-26
1961	1961-01-30	1961-12-20
1962	1962-02-07	1962-12-15
1963	1963-02-04	1963-12-20
1964	1964-01-01	1964-12-23
1965	1965-01-01	1965-12-30
1966	1966-01-05	1966-12-20
1967	1967-01-04	1967-12-26
1968	1968-01-09	1968-12-24
1969	1969-01-10	1969-12-23
1970	1970-01-13	1970-12-30
1971	1971-01-08	1971-12-23
1972	1972-01-23	1972-12-27
1973	1973-01-14	1973-12-27
1974	1974-01-14	1974-12-27
1975	1975-01-04	1975-12-04
1976	1976-02-26	1976-09-06
1977	1977-03-07	1977-12-03
1978	1978-01-04	1978-12-26
1979	1979-02-12	1979-12-30
1980	1980-01-11	1980-11-28
1981	1981-01-21	1981-12-19
1982	1982-01-21	1982-12-21
1983	1983-01-04	1983-12-12
1984	1984-01-24	1984-12-14
1985	1985-02-10	1985-10-27
1986	1986-01-05	1986-12-31
1987	1987-01-02	1987-12-09
1988	1988-01-28	1988-12-20
1989	1989-02-17	1989-12-02
1990	1990-01-06	1990-12-08
1991	1991-02-01	1991-11-19
1992	1992-01-03	1992-12-27
1993	1993-01-18	1993-12-13
1994	1994-02-12	1994-12-19
1995	1995-01-07	1995-12-13
1996	1996-01-14	1996-12-31
1997	1997-01-01	1997-12-15
1998	1998-01-01	1998-12-25
1999	1999-01-17	1999-12-17
2000	2000-01-13	2000-12-21
2001	2001-01-28	2001-12-17
2002	2002-01-01	2002-12-29
2003	2003-01-01	2003-12-24
2004	2004-03-25	2004-12-09
2005	2005-01-06	2005-12-29
2006	2006-01-09	2006-12-26
2007	2007-01-02	2007-12-18
2008	2008-01-02	2008-12-01
2009	2009-02-23	2009-12-15
2010	2010-01-11	2010-12-24
2011	2011-01-11	2011-11-24
2012	2012-01-02	2012-12-25
2013	2013-01-08	2013-09-29
2014	2014-01-10	2014-12-19
2015	2015-01-04	2015-12-21
2016	2016-01-12	2016-12-22
2017	2017-01-17	2017-12-18
2018	2018-01-11	2018-12-17
2019	2019-01-03	2019-12-20
2020	2020-01-17	2020-12-25
2021	2021-01-02	2021-12-18
2022	2022-01-02	2022-12-30
2026	2026-02-22	2026-08-29

Every Fixed Threshold

Fixed thresholds at Chimacum 4 S
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	94	32	1954	7
25 mm (0.98 in): Days with 25 mm or more rain	86	11	1999	3
50 mm (1.97 in): Days with 50 mm or more rain	17	2	1982	1
10 cm (3.9 in): Days with 10 cm or more snowfall	15	4	1965	1
25 cm (9.8 in): Days with 25 cm or more snowfall	3	1	1943	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1927.

Download the Data

Data for Chimacum 4 S 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).

Chimacum 4 S Threshold Days by Year (USC00451414)

Key Facts for Chimacum 4 S Thresholds

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

Every Fixed Threshold

Download the Data

Related