Wellwood Threshold Days by Year (ASN00063090)

4 fixed thresholds counted per year at Wellwood (ASN00063090): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Wellwood Thresholds

Wellwood: days with 10 mm (0.39 in) or more of precipitation in 89 years, most in 1950 with 52.
Wellwood: days with 25 mm (0.98 in) or more of precipitation in 89 years, most in 1950 with 20.
Wellwood: days with 50 mm (1.97 in) or more of precipitation in 60 years, most in 1939 with 6.
Wellwood: days with 100 mm (3.94 in) or more of precipitation in 7 years, most in 1921 with 1.
4 fixed thresholds have at least one qualifying day at Wellwood.

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

89 years with a qualifying day

Days per year at Wellwood with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 52 in 1950.

Days with 10 mm (0.39 in) or more of precipitation per year at Wellwood
Year	Days	Decade average
1886	37	30.5
1887	38	30.5
1888	15	30.5
1889	32	30.5
1890	37	27.7
1891	33	27.7
1892	35	27.7
1893	35	27.7
1894	33	27.7
1895	26	27.7
1896	27	27.7
1897	14	27.7
1898	20	27.7
1899	17	27.7
1900	29	24.2
1901	23	24.2
1902	14	24.2
1903	27	24.2
1904	22	24.2
1905	27	24.2
1906	26	24.2
1907	25	24.2
1908	20	24.2
1909	29	24.2
1910	25	26.7
1911	25	26.7
1912	20	26.7
1913	23	26.7
1914	30	26.7
1915	17	26.7
1916	45	26.7
1917	41	26.7
1918	25	26.7
1919	16	26.7
1920	34	28.6
1921	29	28.6
1922	23	28.6
1923	27	28.6
1924	33	28.6
1925	19	28.6
1926	36	28.6
1927	26	28.6
1928	33	28.6
1929	26	28.6
1930	35	35.2
1931	39	35.2
1932	32	35.2
1933	36	35.2
1934	44	35.2
1935	37	35.2
1936	38	35.2
1937	25	35.2
1938	32	35.2
1939	34	35.2
1940	25	27
1941	22	27
1942	38	27
1943	29	27
1944	15	27
1945	30	27
1946	18	27
1947	36	27
1948	30	27
1949	27	27
1950	52	33.3
1951	26	33.3
1952	41	33.3
1953	21	33.3
1954	30	33.3
1955	39	33.3
1956	52	33.3
1957	16	33.3
1958	30	33.3
1959	26	33.3
1960	38	31.2
1961	21	31.2
1962	26	31.2
1963	42	31.2
1964	35	31.2
1965	16	31.2
1966	37	31.2
1967	23	31.2
1968	33	31.2
1969	41	31.2
1970	40	33.2
1971	29	33.2
1972	17	33.2
1973	45	33.2
1974	35	33.2

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

First to last qualifying date each year at Wellwood
Year	First date	Last date
1886	1886-01-16	1886-12-08
1887	1887-01-22	1887-12-26
1888	1888-02-03	1888-12-16
1889	1889-01-04	1889-12-20
1890	1890-01-16	1890-12-30
1891	1891-01-06	1891-12-03
1892	1892-01-12	1892-12-31
1893	1893-01-19	1893-12-29
1894	1894-01-05	1894-12-28
1895	1895-01-05	1895-12-30
1896	1896-01-21	1896-12-21
1897	1897-01-04	1897-12-20
1898	1898-01-13	1898-12-25
1899	1899-01-19	1899-11-05
1900	1900-01-05	1900-12-21
1901	1901-01-02	1901-10-28
1902	1902-01-05	1902-12-19
1903	1903-02-08	1903-12-22
1904	1904-01-03	1904-12-18
1905	1905-02-16	1905-11-21
1906	1906-01-01	1906-12-25
1907	1907-01-27	1907-12-18
1908	1908-01-10	1908-12-22
1909	1909-01-05	1909-12-24
1910	1910-01-11	1910-12-13
1911	1911-01-12	1911-12-16
1912	1912-01-06	1912-12-24
1913	1913-02-06	1913-12-26
1914	1914-01-12	1914-12-31
1915	1915-01-30	1915-12-15
1916	1916-01-29	1916-12-25
1917	1917-01-12	1917-12-01
1918	1918-01-11	1918-12-24
1919	1919-01-12	1919-12-31
1920	1920-01-04	1920-12-10
1921	1921-03-02	1921-12-30
1922	1922-01-08	1922-12-08
1923	1923-01-13	1923-11-05
1924	1924-01-06	1924-12-15
1925	1925-01-05	1925-12-13
1926	1926-01-06	1926-12-28
1927	1927-01-06	1927-12-11
1928	1928-01-06	1928-11-05
1929	1929-02-16	1929-12-29
1930	1930-01-24	1930-12-18
1931	1931-01-02	1931-12-04
1932	1932-02-07	1932-12-31
1933	1933-01-21	1933-12-15
1934	1934-01-05	1934-12-24
1935	1935-01-04	1935-12-05
1936	1936-01-05	1936-12-24
1937	1937-01-01	1937-12-29
1938	1938-01-16	1938-11-28
1939	1939-01-03	1939-12-13
1940	1940-01-04	1940-12-29
1941	1941-01-03	1941-11-20
1942	1942-02-02	1942-12-26
1943	1943-01-23	1943-12-29
1944	1944-01-26	1944-11-30
1945	1945-01-12	1945-12-07
1946	1946-01-19	1946-12-29
1947	1947-02-09	1947-12-25
1948	1948-01-02	1948-12-31
1949	1949-01-26	1949-12-20
1950	1950-01-01	1950-11-25
1951	1951-01-07	1951-12-24
1952	1952-03-20	1952-12-31
1953	1953-01-06	1953-12-24
1954	1954-01-01	1954-12-13
1955	1955-01-23	1955-12-20
1956	1956-01-20	1956-11-03
1957	1957-01-20	1957-12-31
1958	1958-01-28	1958-12-31
1959	1959-01-01	1959-12-06
1960	1960-01-15	1960-12-16
1961	1961-01-03	1961-12-16
1962	1962-01-05	1962-12-08
1963	1963-01-04	1963-12-30
1964	1964-01-13	1964-12-27
1965	1965-03-09	1965-12-15
1966	1966-01-17	1966-12-30
1967	1967-01-26	1967-12-30
1968	1968-01-05	1968-12-27
1969	1969-01-01	1969-12-13
1970	1970-01-03	1970-12-29
1971	1971-01-14	1971-12-08
1972	1972-01-13	1972-12-26
1973	1973-01-14	1973-12-30
1974	1974-01-07	1974-11-03

Every Fixed Threshold

Fixed thresholds at Wellwood
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	89	52	1950	35
25 mm (0.98 in): Days with 25 mm or more rain	89	20	1950	11
50 mm (1.97 in): Days with 50 mm or more rain	60	6	1939	3
100 mm (3.94 in): Days with 100 mm or more rain	7	1	1921	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1886.

Download the Data

Data for Wellwood 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).

Wellwood Threshold Days by Year (ASN00063090)

Key Facts for Wellwood Thresholds

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

Every Fixed Threshold

Download the Data

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