Nelson Threshold Days by Year (ASN00090059)

4 fixed thresholds counted per year at Nelson (ASN00090059): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Nelson Thresholds

Nelson: days with 10 mm (0.39 in) or more of precipitation in 122 years, most in 1968 with 36.
Nelson: days with 25 mm (0.98 in) or more of precipitation in 105 years, most in 1895 with 7.
Nelson: days with 50 mm (1.97 in) or more of precipitation in 19 years, most in 1925 with 2.
Nelson: days with 100 mm (3.94 in) or more of precipitation in 1 years, most in 2011 with 1.
4 fixed thresholds have at least one qualifying day at Nelson.

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

122 years with a qualifying day

Days per year at Nelson with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 36 in 1968.

Days with 10 mm (0.39 in) or more of precipitation per year at Nelson
Year	Days	Decade average
1885	26	27
1886	26	27
1887	35	27
1888	21	27
1894	22	15.5
1895	25	15.5
1896	20	15.5
1897	8	15.5
1898	9	15.5
1899	9	15.5
1900	9	16
1901	9	16
1902	11	16
1903	21	16
1904	14	16
1905	21	16
1906	22	16
1907	11	16
1909	26	16
1910	23	19.6
1911	20	19.6
1914	14	19.6
1915	20	19.6
1916	20	19.6
1917	23	19.6
1918	16	19.6
1919	21	19.6
1920	21	20
1921	22	20
1922	19	20
1923	23	20
1924	17	20
1925	16	20
1926	21	20
1927	20	20
1928	18	20
1929	23	20
1930	21	17.2
1931	7	17.2
1932	18	17.2
1933	17	17.2
1934	15	17.2
1935	17	17.2
1936	19	17.2
1937	17	17.2
1938	16	17.2
1939	25	17.2
1940	14	22.2
1941	19	22.2
1942	29	22.2
1943	15	22.2
1944	19	22.2
1945	26	22.2
1946	27	22.2
1947	32	22.2
1948	20	22.2
1949	21	22.2
1950	16	21.3
1951	25	21.3
1952	27	21.3
1953	28	21.3
1954	18	21.3
1955	28	21.3
1956	26	21.3
1957	17	21.3
1958	19	21.3
1959	9	21.3
1960	30	20.2
1961	11	20.2
1962	18	20.2
1963	11	20.2
1964	28	20.2
1965	22	20.2
1966	22	20.2
1967	11	20.2
1968	36	20.2
1969	13	20.2
1970	24	25.4
1971	29	25.4
1972	21	25.4
1973	26	25.4
1974	28	25.4
1975	30	25.4
1976	25	25.4
1977	22	25.4
1978	23	25.4
1979	26	25.4
1980	18	21.1
1981	33	21.1
1982	12	21.1
1983	27	21.1
1984	23	21.1
1985	27	21.1
1986	21	21.1
1987	13	21.1
1988	17	21.1
1989	20	21.1
1990	20	20
1991	16	20
1992	31	20
1993	21	20
1994	16	20
1995	17	20
1996	28	20
1997	16	20
1998	22	20
1999	13	20
2000	33	23.1
2001	28	23.1
2002	18	23.1
2003	24	23.1
2004	28	23.1
2005	12	23.1
2006	14	23.1
2007	25	23.1
2008	18	23.1
2009	31	23.1
2010	30	23.4
2011	25	23.4
2012	19	23.4
2013	27	23.4
2014	16	23.4

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

First to last qualifying date each year at Nelson
Year	First date	Last date
1885	1885-01-06	1885-12-23
1886	1886-02-01	1886-11-26
1887	1887-01-15	1887-11-06
1888	1888-03-30	1888-12-21
1894	1894-02-27	1894-12-23
1895	1895-01-03	1895-12-16
1896	1896-01-17	1896-12-27
1897	1897-05-05	1897-09-05
1898	1898-05-23	1898-10-28
1899	1899-03-19	1899-12-26
1900	1900-01-19	1900-08-12
1901	1901-02-24	1901-09-21
1902	1902-03-25	1902-12-18
1903	1903-01-21	1903-10-11
1904	1904-01-26	1904-10-19
1905	1905-02-12	1905-12-02
1906	1906-03-11	1906-11-27
1907	1907-03-05	1907-11-03
1909	1909-01-23	1909-12-22
1910	1910-03-06	1910-12-23
1911	1911-02-07	1911-12-12
1914	1914-03-13	1914-12-14
1915	1915-03-07	1915-09-28
1916	1916-01-28	1916-11-23
1917	1917-02-15	1917-10-27
1918	1918-01-15	1918-10-27
1919	1919-02-16	1919-10-10
1920	1920-05-14	1920-11-04
1921	1921-01-02	1921-12-02
1922	1922-04-05	1922-10-15
1923	1923-05-08	1923-12-15
1924	1924-02-15	1924-11-11
1925	1925-01-13	1925-09-17
1926	1926-02-09	1926-12-17
1927	1927-01-05	1927-12-05
1928	1928-01-20	1928-10-06
1929	1929-01-30	1929-12-28
1930	1930-02-20	1930-11-24
1931	1931-01-25	1931-09-11
1932	1932-01-12	1932-12-23
1933	1933-03-04	1933-11-30
1934	1934-01-09	1934-11-08
1935	1935-01-05	1935-11-22
1936	1936-01-09	1936-12-18
1937	1937-01-19	1937-12-26
1938	1938-02-19	1938-11-04
1939	1939-04-05	1939-12-05
1940	1940-01-05	1940-09-29
1941	1941-01-24	1941-11-19
1942	1942-01-20	1942-12-19
1943	1943-02-18	1943-10-18
1944	1944-02-08	1944-12-21
1945	1945-01-31	1945-12-27
1946	1946-01-17	1946-12-28
1947	1947-02-16	1947-12-25
1948	1948-01-05	1948-11-08
1949	1949-01-14	1949-11-29
1950	1950-02-15	1950-12-20
1951	1951-03-15	1951-12-18
1952	1952-01-24	1952-11-08
1953	1953-04-04	1953-12-07
1954	1954-01-28	1954-12-12
1955	1955-02-12	1955-12-31
1956	1956-03-31	1956-12-15
1957	1957-02-07	1957-12-26
1958	1958-04-14	1958-10-24
1959	1959-02-06	1959-12-25
1960	1960-01-09	1960-10-11
1961	1961-04-11	1961-12-18
1962	1962-02-20	1962-10-07
1963	1963-01-14	1963-10-28
1964	1964-02-23	1964-12-09
1965	1965-03-12	1965-12-13
1966	1966-06-02	1966-12-19
1967	1967-01-13	1967-12-14
1968	1968-03-29	1968-12-25
1969	1969-02-10	1969-12-11
1970	1970-01-03	1970-12-31
1971	1971-03-15	1971-12-31
1972	1972-01-09	1972-11-10
1973	1973-02-06	1973-12-30
1974	1974-02-01	1974-12-11
1975	1975-01-11	1975-12-29
1976	1976-02-29	1976-12-23
1977	1977-01-14	1977-11-29
1978	1978-01-23	1978-11-19
1979	1979-04-21	1979-12-16
1980	1980-04-16	1980-11-19
1981	1981-01-10	1981-11-10
1982	1982-03-23	1982-08-12
1983	1983-01-11	1983-12-31
1984	1984-03-13	1984-12-14
1985	1985-03-16	1985-12-21
1986	1986-04-16	1986-12-17
1987	1987-01-03	1987-10-19
1988	1988-01-01	1988-12-12
1989	1989-01-05	1989-10-31
1990	1990-01-11	1990-11-01
1991	1991-01-24	1991-11-07
1992	1992-04-05	1992-12-20
1993	1993-01-27	1993-12-15
1994	1994-01-08	1994-12-21
1995	1995-01-06	1995-12-04
1996	1996-01-01	1996-10-19
1997	1997-01-22	1997-11-14
1998	1998-01-14	1998-12-27
1999	1999-02-18	1999-12-03
2000	2000-01-04	2000-11-02
2001	2001-02-13	2001-12-03
2002	2002-04-25	2002-12-31
2003	2003-01-30	2003-12-22
2004	2004-02-11	2004-12-11
2005	2005-02-02	2005-10-20
2006	2006-01-01	2006-09-24
2007	2007-01-20	2007-12-22
2008	2008-02-20	2008-12-13
2009	2009-03-14	2009-12-17
2010	2010-02-05	2010-12-19
2011	2011-01-12	2011-12-19
2012	2012-03-04	2012-12-15
2013	2013-01-31	2013-12-21
2014	2014-03-21	2014-12-04

Every Fixed Threshold

Fixed thresholds at Nelson
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	122	36	1968	16
25 mm (0.98 in): Days with 25 mm or more rain	105	7	1895	1
50 mm (1.97 in): Days with 50 mm or more rain	19	2	1925	1
100 mm (3.94 in): Days with 100 mm or more rain	1	1	2011	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1885.

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Data for Nelson 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).

Nelson Threshold Days by Year (ASN00090059)

Key Facts for Nelson Thresholds

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

Every Fixed Threshold

Download the Data

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