Ketty Threshold Days by Year (IN020091700)

4 fixed thresholds counted per year at Ketty (IN020091700): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Ketty Thresholds

Ketty: days with 10 mm (0.39 in) or more of precipitation in 69 years, most in 1915 with 70.
Ketty: days with 25 mm (0.98 in) or more of precipitation in 69 years, most in 1950 with 29.
Ketty: days with 50 mm (1.97 in) or more of precipitation in 64 years, most in 1910 with 8.
Ketty: days with 100 mm (3.94 in) or more of precipitation in 18 years, most in 1948 with 3.
4 fixed thresholds have at least one qualifying day at Ketty.

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

69 years with a qualifying day

Days per year at Ketty with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 70 in 1915.

Days with 10 mm (0.39 in) or more of precipitation per year at Ketty
Year	Days	Decade average
1901	56	46.3
1902	62	46.3
1903	54	46.3
1904	40	46.3
1905	43	46.3
1906	50	46.3
1907	40	46.3
1908	27	46.3
1909	45	46.3
1910	57	51.2
1911	52	51.2
1912	50	51.2
1913	39	51.2
1914	45	51.2
1915	70	51.2
1916	35	51.2
1917	46	51.2
1918	57	51.2
1919	61	51.2
1920	50	45.3
1921	48	45.3
1922	34	45.3
1923	50	45.3
1924	65	45.3
1925	43	45.3
1926	39	45.3
1927	42	45.3
1928	35	45.3
1929	47	45.3
1930	42	39.4
1931	29	39.4
1932	48	39.4
1933	47	39.4
1934	37	39.4
1935	23	39.4
1936	54	39.4
1937	44	39.4
1938	35	39.4
1939	35	39.4
1940	49	42.4
1941	42	42.4
1942	29	42.4
1943	40	42.4
1944	54	42.4
1945	38	42.4
1946	49	42.4
1947	40	42.4
1948	41	42.4
1949	42	42.4
1950	49	40.1
1951	22	40.1
1952	27	40.1
1953	56	40.1
1954	35	40.1
1955	50	40.1
1956	35	40.1
1957	51	40.1
1958	35	40.1
1959	41	40.1
1960	10	32.4
1961	32	32.4
1962	17	32.4
1963	39	32.4
1964	40	32.4
1965	24	32.4
1966	56	32.4
1967	31	32.4
1968	38	32.4
1969	37	32.4

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

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

Every Fixed Threshold

Fixed thresholds at Ketty
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	69	70	1915	37
25 mm (0.98 in): Days with 25 mm or more rain	69	29	1950	15
50 mm (1.97 in): Days with 50 mm or more rain	64	8	1910	5
100 mm (3.94 in): Days with 100 mm or more rain	18	3	1948	2

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1901.

Download the Data

Data for Ketty 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).

Ketty Threshold Days by Year (IN020091700)

Key Facts for Ketty Thresholds

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

Every Fixed Threshold

Download the Data

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