Rockley Post Office Threshold Days by Year (ASN00063073)

4 fixed thresholds counted per year at Rockley Post Office (ASN00063073): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Rockley Post Office Thresholds

Rockley Post Office: days with 10 mm (0.39 in) or more of precipitation in 101 years, most in 1950 with 44.
Rockley Post Office: days with 25 mm (0.98 in) or more of precipitation in 97 years, most in 1950 with 14.
Rockley Post Office: days with 50 mm (1.97 in) or more of precipitation in 45 years, most in 1950 with 4.
Rockley Post Office: days with 100 mm (3.94 in) or more of precipitation in 3 years, most in 1900 with 1.
4 fixed thresholds have at least one qualifying day at Rockley Post Office.

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

101 years with a qualifying day

Days per year at Rockley Post Office with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 44 in 1950.

Days with 10 mm (0.39 in) or more of precipitation per year at Rockley Post Office
Year	Days	Decade average
1896	28	20
1897	15	20
1898	14	20
1899	23	20
1900	27	18.4
1901	18	18.4
1902	12	18.4
1903	18	18.4
1904	17	18.4
1905	18	18.4
1906	23	18.4
1907	19	18.4
1908	13	18.4
1909	19	18.4
1910	19	18.5
1911	24	18.5
1912	17	18.5
1913	15	18.5
1914	18	18.5
1917	33	18.5
1918	11	18.5
1919	11	18.5
1920	25	25.5
1921	26	25.5
1932	20	22.1
1934	28	22.1
1935	20	22.1
1936	29	22.1
1937	18	22.1
1938	17	22.1
1939	23	22.1
1940	12	19.6
1941	21	19.6
1942	25	19.6
1943	22	19.6
1944	10	19.6
1945	19	19.6
1946	13	19.6
1947	28	19.6
1948	20	19.6
1949	26	19.6
1950	44	27.9
1951	27	27.9
1952	28	27.9
1953	17	27.9
1954	26	27.9
1955	37	27.9
1956	35	27.9
1957	12	27.9
1958	27	27.9
1959	26	27.9
1960	26	22.2
1961	17	22.2
1962	20	22.2
1963	21	22.2
1964	26	22.2
1965	10	22.2
1966	27	22.2
1967	16	22.2
1968	33	22.2
1969	26	22.2
1970	33	25
1971	28	25
1972	19	25
1973	40	25
1974	20	25
1979	10	25
1980	16	21.7
1981	22	21.7
1982	3	21.7
1983	27	21.7
1984	28	21.7
1985	22	21.7
1986	22	21.7
1987	29	21.7
1988	28	21.7
1989	20	21.7
1990	35	24.8
1993	25	24.8
1996	22	24.8
1997	19	24.8
1998	27	24.8
1999	21	24.8
2000	34	20.6
2001	15	20.6
2002	17	20.6
2003	25	20.6
2004	18	20.6
2008	20	20.6
2009	15	20.6
2010	40	21.3
2011	19	21.3
2012	23	21.3
2013	19	21.3
2016	30	21.3
2017	12	21.3
2018	12	21.3
2019	15	21.3
2020	28	32
2021	38	32
2022	30	32

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

First to last qualifying date each year at Rockley Post Office
Year	First date	Last date
1896	1896-01-20	1896-12-15
1897	1897-01-11	1897-12-20
1898	1898-01-13	1898-12-24
1899	1899-01-19	1899-12-07
1900	1900-01-05	1900-12-03
1901	1901-01-02	1901-11-06
1902	1902-01-06	1902-12-18
1903	1903-03-06	1903-12-22
1904	1904-01-04	1904-12-19
1905	1905-01-10	1905-12-08
1906	1906-01-01	1906-12-26
1907	1907-01-14	1907-12-17
1908	1908-01-10	1908-11-23
1909	1909-01-18	1909-12-23
1910	1910-01-11	1910-12-19
1911	1911-01-05	1911-12-05
1912	1912-02-23	1912-11-19
1913	1913-01-11	1913-10-28
1914	1914-01-12	1914-12-31
1917	1917-01-19	1917-12-01
1918	1918-01-11	1918-10-23
1919	1919-05-22	1919-12-30
1920	1920-01-19	1920-12-14
1921	1921-01-04	1921-12-27
1932	1932-02-08	1932-12-25
1934	1934-01-08	1934-12-16
1935	1935-01-05	1935-12-04
1936	1936-01-05	1936-12-21
1937	1937-01-01	1937-12-30
1938	1938-01-27	1938-11-17
1939	1939-01-04	1939-12-13
1940	1940-04-05	1940-12-20
1941	1941-01-03	1941-11-20
1942	1942-02-02	1942-12-28
1943	1943-01-04	1943-12-06
1944	1944-01-02	1944-11-24
1945	1945-01-12	1945-12-07
1946	1946-01-19	1946-12-29
1947	1947-02-11	1947-12-25
1948	1948-01-02	1948-12-31
1949	1949-01-10	1949-12-20
1950	1950-01-02	1950-12-21
1951	1951-01-07	1951-12-19
1952	1952-03-20	1952-12-30
1953	1953-01-06	1953-12-24
1954	1954-01-01	1954-12-05
1955	1955-01-02	1955-12-25
1956	1956-01-12	1956-12-03
1957	1957-01-20	1957-12-31
1958	1958-01-20	1958-12-28
1959	1959-01-01	1959-11-26
1960	1960-01-19	1960-12-03
1961	1961-02-25	1961-12-18
1962	1962-01-11	1962-12-15
1963	1963-01-04	1963-12-30
1964	1964-01-13	1964-12-27
1965	1965-04-13	1965-12-15
1966	1966-01-17	1966-12-30
1967	1967-01-03	1967-12-30
1968	1968-01-04	1968-12-27
1969	1969-01-15	1969-12-13
1970	1970-01-03	1970-12-29
1971	1971-01-18	1971-12-08
1972	1972-01-13	1972-12-27
1973	1973-01-15	1973-12-21
1974	1974-01-02	1974-10-18
1979	1979-04-17	1979-11-24
1980	1980-01-05	1980-12-30
1981	1981-01-04	1981-12-24
1982	1982-02-24	1982-03-25
1983	1983-01-03	1983-12-11
1984	1984-01-01	1984-12-12
1985	1985-02-23	1985-12-11
1986	1986-01-16	1986-11-20
1987	1987-01-01	1987-12-29
1988	1988-01-02	1988-12-26
1989	1989-01-01	1989-12-14
1990	1990-01-08	1990-12-04
1993	1993-01-09	1993-12-22
1996	1996-01-02	1996-12-29
1997	1997-01-07	1997-12-15
1998	1998-01-04	1998-12-14
1999	1999-01-02	1999-12-29
2000	2000-01-28	2000-12-01
2001	2001-01-08	2001-12-07
2002	2002-01-07	2002-12-11
2003	2003-01-01	2003-12-13
2004	2004-01-14	2004-12-09
2008	2008-01-14	2008-12-28
2009	2009-02-15	2009-12-28
2010	2010-01-17	2010-12-27
2011	2011-01-04	2011-12-27
2012	2012-01-22	2012-12-25
2013	2013-01-27	2013-12-26
2016	2016-01-15	2016-12-31
2017	2017-01-21	2017-12-03
2018	2018-02-26	2018-12-20
2019	2019-01-08	2019-11-04
2020	2020-01-17	2020-12-22
2021	2021-01-05	2021-12-24
2022	2022-01-07	2022-12-12

Every Fixed Threshold

Fixed thresholds at Rockley Post Office
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	101	44	1950	30
25 mm (0.98 in): Days with 25 mm or more rain	97	14	1950	7
50 mm (1.97 in): Days with 50 mm or more rain	45	4	1950	1
100 mm (3.94 in): Days with 100 mm or more rain	3	1	1900	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1896.

Download the Data

Data for Rockley Post Office 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).

Rockley Post Office Threshold Days by Year (ASN00063073)

Key Facts for Rockley Post Office Thresholds

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

Every Fixed Threshold

Download the Data

Related