Dynevor Downs Threshold Days by Year (ASN00044031)

4 fixed thresholds counted per year at Dynevor Downs (ASN00044031): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Dynevor Downs Thresholds

Dynevor Downs: days with 10 mm (0.39 in) or more of precipitation in 106 years, most in 1956 with 24.
Dynevor Downs: days with 25 mm (0.98 in) or more of precipitation in 95 years, most in 1956 with 9.
Dynevor Downs: days with 50 mm (1.97 in) or more of precipitation in 42 years, most in 1949 with 5.
Dynevor Downs: days with 100 mm (3.94 in) or more of precipitation in 11 years, most in 1880 with 1.
4 fixed thresholds have at least one qualifying day at Dynevor Downs.

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

106 years with a qualifying day

Days per year at Dynevor Downs with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 24 in 1956.

Days with 10 mm (0.39 in) or more of precipitation per year at Dynevor Downs
Year	Days	Decade average
1880	8	10.6
1881	7	10.6
1882	15	10.6
1888	9	10.6
1889	14	10.6
1893	9	9.3
1894	12	9.3
1896	9	9.3
1899	7	9.3
1908	10	9.5
1909	9	9.5
1910	11	8.5
1911	11	8.5
1912	6	8.5
1913	8	8.5
1914	5	8.5
1915	5	8.5
1916	12	8.5
1917	14	8.5
1918	8	8.5
1919	5	8.5
1920	16	7.9
1921	11	7.9
1922	3	7.9
1923	8	7.9
1924	10	7.9
1925	6	7.9
1926	15	7.9
1927	1	7.9
1928	5	7.9
1929	4	7.9
1930	12	9
1931	11	9
1932	6	9
1933	8	9
1934	7	9
1935	10	9
1936	12	9
1937	2	9
1938	7	9
1939	15	9
1940	4	10.1
1941	13	10.1
1945	7	10.1
1946	4	10.1
1947	15	10.1
1948	8	10.1
1949	20	10.1
1950	20	10.7
1951	5	10.7
1952	12	10.7
1953	8	10.7
1954	12	10.7
1955	13	10.7
1956	24	10.7
1957	4	10.7
1958	4	10.7
1959	5	10.7
1960	9	6.7
1961	7	6.7
1962	8	6.7
1963	10	6.7
1964	6	6.7
1965	2	6.7
1966	6	6.7
1967	7	6.7
1968	7	6.7
1969	5	6.7
1970	4	9.4
1971	5	9.4
1972	4	9.4
1973	16	9.4
1974	14	9.4
1975	11	9.4
1976	13	9.4
1977	10	9.4
1978	12	9.4
1979	5	9.4
1980	2	9.9
1981	11	9.9
1982	4	9.9
1983	8	9.9
1984	9	9.9
1985	10	9.9
1986	8	9.9
1987	21	9.9
1988	16	9.9
1993	12	13.3
1994	7	13.3
1995	19	13.3
1996	12	13.3
1997	12	13.3
1998	14	13.3
1999	17	13.3
2000	17	6.8
2001	4	6.8
2002	2	6.8
2003	7	6.8
2004	10	6.8
2005	1	6.8
2006	4	6.8
2007	10	6.8
2008	6	6.8
2009	7	6.8
2018	3	3.5
2019	4	3.5

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

First to last qualifying date each year at Dynevor Downs
Year	First date	Last date
1880	1880-01-08	1880-09-14
1881	1881-01-27	1881-11-17
1882	1882-01-30	1882-12-30
1888	1888-01-02	1888-09-23
1889	1889-01-03	1889-11-12
1893	1893-03-17	1893-10-14
1894	1894-02-26	1894-10-13
1896	1896-02-08	1896-11-19
1899	1899-01-18	1899-10-15
1908	1908-01-22	1908-12-12
1909	1909-03-04	1909-11-27
1910	1910-01-04	1910-11-30
1911	1911-02-02	1911-12-04
1912	1912-03-10	1912-12-24
1913	1913-01-07	1913-04-06
1914	1914-01-19	1914-06-23
1915	1915-05-15	1915-12-28
1916	1916-04-02	1916-12-09
1917	1917-01-03	1917-11-21
1918	1918-01-25	1918-10-30
1919	1919-01-03	1919-08-25
1920	1920-02-05	1920-12-06
1921	1921-02-19	1921-10-14
1922	1922-10-15	1922-12-26
1923	1923-01-05	1923-12-25
1924	1924-02-14	1924-12-15
1925	1925-01-15	1925-11-19
1926	1926-01-01	1926-11-24
1927	1927-11-03	1927-11-03
1928	1928-02-15	1928-11-05
1929	1929-02-22	1929-11-18
1930	1930-01-24	1930-12-17
1931	1931-03-21	1931-12-06
1932	1932-03-16	1932-11-13
1933	1933-01-27	1933-12-05
1934	1934-01-31	1934-11-21
1935	1935-04-04	1935-12-31
1936	1936-01-06	1936-12-17
1937	1937-02-13	1937-09-01
1938	1938-03-12	1938-11-16
1939	1939-01-21	1939-11-16
1940	1940-01-31	1940-04-14
1941	1941-01-03	1941-11-19
1945	1945-03-31	1945-10-20
1946	1946-01-18	1946-06-29
1947	1947-02-11	1947-12-25
1948	1948-01-02	1948-12-29
1949	1949-02-20	1949-11-22
1950	1950-01-18	1950-12-18
1951	1951-03-08	1951-12-25
1952	1952-02-15	1952-11-26
1953	1953-01-06	1953-11-05
1954	1954-01-03	1954-12-02
1955	1955-01-26	1955-11-26
1956	1956-01-20	1956-12-20
1957	1957-01-17	1957-06-20
1958	1958-01-30	1958-11-24
1959	1959-01-23	1959-10-09
1960	1960-01-09	1960-11-22
1961	1961-01-02	1961-12-18
1962	1962-01-07	1962-12-29
1963	1963-01-11	1963-10-27
1964	1964-01-13	1964-09-28
1965	1965-03-09	1965-12-14
1966	1966-01-07	1966-12-04
1967	1967-03-02	1967-12-07
1968	1968-01-14	1968-05-12
1969	1969-03-16	1969-09-05
1970	1970-01-17	1970-12-06
1971	1971-01-28	1971-08-06
1972	1972-01-05	1972-11-29
1973	1973-01-12	1973-12-30
1974	1974-01-07	1974-11-16
1975	1975-01-02	1975-12-27
1976	1976-01-06	1976-12-22
1977	1977-02-03	1977-10-24
1978	1978-01-26	1978-12-03
1979	1979-02-19	1979-10-24
1980	1980-05-27	1980-12-03
1981	1981-02-10	1981-11-18
1982	1982-02-28	1982-05-29
1983	1983-03-19	1983-12-28
1984	1984-01-09	1984-10-03
1985	1985-02-03	1985-12-07
1986	1986-05-05	1986-12-06
1987	1987-01-26	1987-12-28
1988	1988-02-06	1988-12-25
1993	1993-01-26	1993-12-09
1994	1994-02-14	1994-11-30
1995	1995-01-02	1995-11-29
1996	1996-01-01	1996-12-05
1997	1997-01-16	1997-12-31
1998	1998-01-09	1998-11-26
1999	1999-01-27	1999-12-27
2000	2000-02-22	2000-12-14
2001	2001-01-25	2001-11-27
2002	2002-01-07	2002-03-26
2003	2003-02-22	2003-11-30
2004	2004-02-03	2004-12-09
2005	2005-06-10	2005-06-10
2006	2006-01-16	2006-12-25
2007	2007-01-21	2007-12-22
2008	2008-02-12	2008-12-13
2009	2009-01-11	2009-12-26
2018	2018-03-03	2018-11-21
2019	2019-01-11	2019-05-03

Every Fixed Threshold

Fixed thresholds at Dynevor Downs
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	106	24	1956	4
25 mm (0.98 in): Days with 25 mm or more rain	95	9	1956	1
50 mm (1.97 in): Days with 50 mm or more rain	42	5	1949	1
100 mm (3.94 in): Days with 100 mm or more rain	11	1	1880	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1880.

Download the Data

Data for Dynevor Downs 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).

Dynevor Downs Threshold Days by Year (ASN00044031)

Key Facts for Dynevor Downs Thresholds

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

Every Fixed Threshold

Download the Data

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