Cambridge Niab Threshold Days by Year (UKE00105003)

3 fixed thresholds counted per year at Cambridge Niab (UKE00105003): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Cambridge Niab Thresholds

Cambridge Niab: days with 10 mm (0.39 in) or more of precipitation in 124 years, most in 1903 with 22.
Cambridge Niab: days with 25 mm (0.98 in) or more of precipitation in 85 years, most in 1992 with 4.
Cambridge Niab: days with 50 mm (1.97 in) or more of precipitation in 7 years, most in 1903 with 1.
3 fixed thresholds have at least one qualifying day at Cambridge Niab.

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

124 years with a qualifying day

Days per year at Cambridge Niab with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 22 in 1903.

Days with 10 mm (0.39 in) or more of precipitation per year at Cambridge Niab
Year	Days	Decade average
1898	9	9
1900	11	10.5
1901	9	10.5
1902	5	10.5
1903	22	10.5
1904	5	10.5
1905	9	10.5
1906	9	10.5
1907	10	10.5
1908	8	10.5
1909	17	10.5
1910	11	12.8
1911	7	12.8
1912	15	12.8
1913	9	12.8
1914	14	12.8
1915	17	12.8
1916	9	12.8
1917	16	12.8
1918	16	12.8
1919	14	12.8
1920	7	10.9
1921	6	10.9
1922	10	10.9
1923	10	10.9
1924	16	10.9
1925	9	10.9
1926	15	10.9
1927	14	10.9
1928	12	10.9
1929	10	10.9
1930	12	13.2
1931	18	13.2
1932	17	13.2
1933	6	13.2
1934	11	13.2
1935	10	13.2
1936	15	13.2
1937	18	13.2
1938	8	13.2
1939	17	13.2
1940	12	10.2
1941	12	10.2
1942	10	10.2
1943	10	10.2
1944	8	10.2
1945	11	10.2
1946	9	10.2
1947	9	10.2
1948	13	10.2
1949	8	10.2
1950	17	13
1951	14	13
1952	10	13
1953	8	13
1954	16	13
1955	11	13
1956	13	13
1957	12	13
1958	20	13
1959	9	13
1960	18	11.9
1961	11	11.9
1962	8	11.9
1963	10	11.9
1964	10	11.9
1965	9	11.9
1966	13	11.9
1967	14	11.9
1968	13	11.9
1969	13	11.9
1970	10	10.4
1971	16	10.4
1972	2	10.4
1973	7	10.4
1974	13	10.4
1975	8	10.4
1976	12	10.4
1977	15	10.4
1978	10	10.4
1979	11	10.4
1980	7	12.6
1981	10	12.6
1982	15	12.6
1983	13	12.6
1984	15	12.6
1985	10	12.6
1986	13	12.6
1987	16	12.6
1988	13	12.6
1989	14	12.6
1990	8	12.9
1991	12	12.9
1992	17	12.9
1993	20	12.9
1994	9	12.9
1995	14	12.9
1996	9	12.9
1997	10	12.9
1998	17	12.9
1999	13	12.9
2000	20	14.2
2005	14	14.2
2006	12	14.2
2007	11	14.2
2008	19	14.2
2009	9	14.2
2010	8	10.3
2011	7	10.3
2012	19	10.3
2013	6	10.3
2014	14	10.3
2015	6	10.3
2016	11	10.3
2017	16	10.3
2018	8	10.3
2019	8	10.3
2020	13	13.6
2021	15	13.6
2022	10	13.6
2023	20	13.6
2024	21	13.6
2025	10	13.6
2026	6	13.6

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

First to last qualifying date each year at Cambridge Niab
Year	First date	Last date
1898	1898-01-05	1898-12-06
1900	1900-01-06	1900-12-30
1901	1901-04-03	1901-12-24
1902	1902-04-05	1902-08-06
1903	1903-01-04	1903-12-10
1904	1904-02-09	1904-12-06
1905	1905-01-16	1905-11-26
1906	1906-01-04	1906-11-08
1907	1907-01-01	1907-12-13
1908	1908-01-07	1908-10-16
1909	1909-03-06	1909-12-02
1910	1910-04-04	1910-12-15
1911	1911-05-14	1911-12-22
1912	1912-01-17	1912-12-25
1913	1913-01-11	1913-11-13
1914	1914-01-09	1914-12-28
1915	1915-01-22	1915-12-09
1916	1916-02-14	1916-12-22
1917	1917-03-11	1917-11-26
1918	1918-01-15	1918-11-03
1919	1919-01-27	1919-12-22
1920	1920-01-09	1920-09-22
1921	1921-01-07	1921-11-05
1922	1922-01-15	1922-09-30
1923	1923-03-12	1923-11-08
1924	1924-01-21	1924-12-02
1925	1925-02-13	1925-12-22
1926	1926-01-01	1926-11-13
1927	1927-01-28	1927-12-25
1928	1928-01-02	1928-12-30
1929	1929-05-24	1929-11-29
1930	1930-04-17	1930-12-07
1931	1931-02-27	1931-12-05
1932	1932-03-22	1932-11-24
1933	1933-03-16	1933-10-28
1934	1934-04-26	1934-12-28
1935	1935-01-26	1935-11-17
1936	1936-01-31	1936-11-16
1937	1937-01-18	1937-12-13
1938	1938-01-11	1938-12-31
1939	1939-01-03	1939-12-08
1940	1940-01-26	1940-11-13
1941	1941-01-25	1941-11-12
1942	1942-01-23	1942-10-26
1943	1943-01-06	1943-12-18
1944	1944-04-03	1944-11-17
1945	1945-01-29	1945-12-28
1946	1946-07-03	1946-11-19
1947	1947-03-05	1947-12-25
1948	1948-01-10	1948-10-16
1949	1949-05-16	1949-11-05
1950	1950-02-05	1950-11-20
1951	1951-01-01	1951-11-24
1952	1952-03-06	1952-11-27
1953	1953-01-05	1953-10-13
1954	1954-02-09	1954-12-13
1955	1955-01-10	1955-10-21
1956	1956-01-22	1956-12-28
1957	1957-02-11	1957-12-12
1958	1958-01-01	1958-12-13
1959	1959-01-06	1959-12-03
1960	1960-03-29	1960-12-20
1961	1961-02-27	1961-12-31
1962	1962-04-21	1962-11-01
1963	1963-05-23	1963-11-28
1964	1964-03-14	1964-12-07
1965	1965-03-20	1965-09-25
1966	1966-02-10	1966-12-09
1967	1967-04-10	1967-11-05
1968	1968-04-30	1968-12-17
1969	1969-01-22	1969-11-16
1970	1970-04-05	1970-12-03
1971	1971-01-23	1971-11-27
1972	1972-08-01	1972-11-25
1973	1973-04-01	1973-09-20
1974	1974-02-08	1974-11-20
1975	1975-01-20	1975-09-26
1976	1976-04-14	1976-12-31
1977	1977-01-27	1977-12-07
1978	1978-01-11	1978-12-10
1979	1979-01-25	1979-12-27
1980	1980-01-03	1980-10-15
1981	1981-03-09	1981-10-19
1982	1982-05-26	1982-12-09
1983	1983-02-06	1983-11-26
1984	1984-01-23	1984-11-23
1985	1985-05-14	1985-12-23
1986	1986-05-06	1986-12-29
1987	1987-04-01	1987-11-19
1988	1988-01-21	1988-11-29
1989	1989-02-25	1989-12-20
1990	1990-02-03	1990-12-25
1991	1991-03-05	1991-11-18
1992	1992-01-08	1992-11-27
1993	1993-04-01	1993-12-12
1994	1994-01-06	1994-10-28
1995	1995-01-19	1995-12-21
1996	1996-01-08	1996-11-24
1997	1997-05-05	1997-12-18
1998	1998-03-05	1998-12-10
1999	1999-01-27	1999-12-13
2000	2000-04-02	2000-11-27
2005	2005-05-21	2005-11-02
2006	2006-04-30	2006-11-22
2007	2007-01-09	2007-11-21
2008	2008-01-11	2008-12-13
2009	2009-02-09	2009-12-29
2010	2010-01-14	2010-11-05
2011	2011-01-07	2011-11-03
2012	2012-01-18	2012-11-24
2013	2013-08-05	2013-11-08
2014	2014-01-08	2014-12-26
2015	2015-07-16	2015-10-27
2016	2016-01-10	2016-12-10
2017	2017-02-22	2017-12-26
2018	2018-04-01	2018-12-15
2019	2019-06-10	2019-12-19
2020	2020-04-30	2020-12-23
2021	2021-01-13	2021-12-09
2022	2022-03-16	2022-11-23
2023	2023-03-09	2023-11-01
2024	2024-01-01	2024-12-18
2025	2025-02-26	2025-11-22
2026	2026-01-08	2026-08-29

Every Fixed Threshold

Fixed thresholds at Cambridge Niab
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	124	22	1903	6
25 mm (0.98 in): Days with 25 mm or more rain	85	4	1992	1
50 mm (1.97 in): Days with 50 mm or more rain	7	1	1903	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1898.

Download the Data

Data for Cambridge Niab 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 2026-10-12. Last revised 12 October 2026 (2026-10-12).

Cambridge Niab Threshold Days by Year (UKE00105003)

Key Facts for Cambridge Niab Thresholds

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

Every Fixed Threshold

Download the Data

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