Chatsworth Threshold Days by Year

4 fixed thresholds counted per year at Chatsworth (ASN00037013): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Chatsworth Thresholds

Chatsworth: days with 10 mm (0.39 in) or more of precipitation in 98 years, most in 1950 with 25.
Chatsworth: days with 25 mm (0.98 in) or more of precipitation in 92 years, most in 1974 with 11.
Chatsworth: days with 50 mm (1.97 in) or more of precipitation in 54 years, most in 1944 with 4.
Chatsworth: days with 100 mm (3.94 in) or more of precipitation in 12 years, most in 1941 with 2.
4 fixed thresholds have at least one qualifying day at Chatsworth.

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

98 years with a qualifying day

Days per year at Chatsworth with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 25 in 1950.

Days with 10 mm (0.39 in) or more of precipitation per year at Chatsworth
Year	Days	Decade average
1915	9	13.4
1916	19	13.4
1917	18	13.4
1918	16	13.4
1919	5	13.4
1920	20	7.6
1921	12	7.6
1923	3	7.6
1924	14	7.6
1925	6	7.6
1926	3	7.6
1927	3	7.6
1928	3	7.6
1929	4	7.6
1930	9	8.7
1931	5	8.7
1932	7	8.7
1933	8	8.7
1934	8	8.7
1935	6	8.7
1936	12	8.7
1937	11	8.7
1938	8	8.7
1939	13	8.7
1940	13	10.6
1941	23	10.6
1942	8	10.6
1943	7	10.6
1944	14	10.6
1945	4	10.6
1946	9	10.6
1947	11	10.6
1948	6	10.6
1950	25	11.7
1951	8	11.7
1952	7	11.7
1953	13	11.7
1954	8	11.7
1955	20	11.7
1956	15	11.7
1957	10	11.7
1958	4	11.7
1959	7	11.7
1960	10	7
1961	5	7
1962	10	7
1963	10	7
1964	5	7
1965	6	7
1966	8	7
1967	3	7
1968	7	7
1969	6	7
1970	5	12.6
1971	14	12.6
1972	5	12.6
1973	9	12.6
1974	22	12.6
1975	13	12.6
1976	15	12.6
1977	18	12.6
1978	14	12.6
1979	11	12.6
1980	9	9.3
1981	21	9.3
1982	6	9.3
1983	7	9.3
1984	17	9.3
1985	4	9.3
1986	6	9.3
1987	7	9.3
1988	9	9.3
1989	7	9.3
1990	9	10.9
1991	11	10.9
1992	11	10.9
1993	9	10.9
1994	4	10.9
1995	9	10.9
1996	8	10.9
1997	18	10.9
1998	12	10.9
1999	18	10.9
2000	21	9.2
2001	8	9.2
2002	4	9.2
2003	10	9.2
2004	8	9.2
2005	4	9.2
2006	9	9.2
2007	10	9.2
2008	2	9.2
2009	16	9.2
2011	13	9
2013	4	9
2014	8	9
2015	4	9
2016	16	9

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

First to last qualifying date each year at Chatsworth
Year	First date	Last date
1915	1915-01-21	1915-12-29
1916	1916-01-25	1916-12-31
1917	1917-01-01	1917-12-12
1918	1918-01-01	1918-12-30
1919	1919-01-28	1919-09-24
1920	1920-01-12	1920-12-05
1921	1921-01-14	1921-12-24
1923	1923-01-07	1923-12-19
1924	1924-01-05	1924-12-12
1925	1925-01-27	1925-11-14
1926	1926-01-14	1926-09-24
1927	1927-02-16	1927-12-05
1928	1928-06-13	1928-12-17
1929	1929-01-06	1929-12-11
1930	1930-01-25	1930-12-04
1931	1931-03-17	1931-12-23
1932	1932-02-26	1932-06-03
1933	1933-01-26	1933-11-29
1934	1934-01-27	1934-11-07
1935	1935-01-20	1935-10-23
1936	1936-01-11	1936-12-24
1937	1937-01-20	1937-12-16
1938	1938-01-28	1938-07-24
1939	1939-02-14	1939-12-30
1940	1940-01-06	1940-11-11
1941	1941-01-02	1941-11-30
1942	1942-01-07	1942-12-06
1943	1943-02-04	1943-12-18
1944	1944-01-21	1944-12-19
1945	1945-01-17	1945-12-16
1946	1946-01-11	1946-12-26
1947	1947-01-28	1947-12-25
1948	1948-01-23	1948-12-26
1950	1950-01-17	1950-12-19
1951	1951-01-05	1951-06-12
1952	1952-01-22	1952-10-28
1953	1953-01-01	1953-12-27
1954	1954-01-23	1954-12-04
1955	1955-01-04	1955-10-20
1956	1956-01-11	1956-12-20
1957	1957-01-09	1957-07-01
1958	1958-03-31	1958-12-30
1959	1959-01-15	1959-05-23
1960	1960-01-10	1960-12-27
1961	1961-01-02	1961-12-15
1962	1962-01-06	1962-12-19
1963	1963-01-14	1963-10-26
1964	1964-01-12	1964-10-07
1965	1965-03-08	1965-12-13
1966	1966-01-06	1966-12-02
1967	1967-01-22	1967-03-05
1968	1968-02-09	1968-12-23
1969	1969-01-13	1969-12-24
1970	1970-02-03	1970-09-23
1971	1971-02-22	1971-11-25
1972	1972-01-11	1972-03-06
1973	1973-01-13	1973-12-27
1974	1974-01-02	1974-12-29
1975	1975-01-01	1975-12-18
1976	1976-01-04	1976-12-21
1977	1977-01-09	1977-12-21
1978	1978-01-22	1978-11-19
1979	1979-01-14	1979-12-28
1980	1980-01-01	1980-12-13
1981	1981-01-14	1981-12-12
1982	1982-01-21	1982-12-24
1983	1983-01-02	1983-12-07
1984	1984-01-01	1984-12-19
1985	1985-02-05	1985-11-02
1986	1986-05-04	1986-12-06
1987	1987-02-14	1987-12-28
1988	1988-02-06	1988-12-26
1989	1989-03-16	1989-12-13
1990	1990-01-24	1990-11-23
1991	1991-01-13	1991-12-11
1992	1992-01-30	1992-12-16
1993	1993-01-25	1993-12-18
1994	1994-01-17	1994-03-02
1995	1995-01-17	1995-12-31
1996	1996-02-29	1996-12-15
1997	1997-01-13	1997-12-20
1998	1998-02-04	1998-12-31
1999	1999-01-01	1999-12-24
2000	2000-02-08	2000-12-23
2001	2001-03-01	2001-12-31
2002	2002-01-06	2002-02-25
2003	2003-01-18	2003-12-28
2004	2004-01-13	2004-12-14
2005	2005-01-04	2005-12-12
2006	2006-01-20	2006-12-21
2007	2007-01-13	2007-12-22
2008	2008-11-26	2008-12-26
2009	2009-01-01	2009-12-30
2011	2011-01-01	2011-12-10
2013	2013-02-12	2013-12-02
2014	2014-02-09	2014-12-27
2015	2015-01-04	2015-12-26
2016	2016-01-01	2016-09-20

Every Fixed Threshold

Fixed thresholds at Chatsworth
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	98	25	1950	16
25 mm (0.98 in): Days with 25 mm or more rain	92	11	1974	5
50 mm (1.97 in): Days with 50 mm or more rain	54	4	1944	3
100 mm (3.94 in): Days with 100 mm or more rain	12	2	1941	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1915.

Download the Data

Data for Chatsworth 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 2026-10-16 (16 October 2026). Threshold counts are computed by this site.

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

Chatsworth Threshold Days by Year

Key Facts for Chatsworth Thresholds

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

Every Fixed Threshold

Download the Data

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