Willow Tree (Valais) Threshold Days by Year (ASN00055057)

4 fixed thresholds counted per year at Willow Tree (Valais) (ASN00055057): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Willow Tree (Valais) Thresholds

Willow Tree (Valais): days with 10 mm (0.39 in) or more of precipitation in 142 years, most in 2010 with 43.
Willow Tree (Valais): days with 25 mm (0.98 in) or more of precipitation in 141 years, most in 2010 with 19.
Willow Tree (Valais): days with 50 mm (1.97 in) or more of precipitation in 103 years, most in 1950 with 7.
Willow Tree (Valais): days with 100 mm (3.94 in) or more of precipitation in 17 years, most in 1950 with 2.
4 fixed thresholds have at least one qualifying day at Willow Tree (Valais).

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

142 years with a qualifying day

Days per year at Willow Tree (Valais) with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 43 in 2010.

Days with 10 mm (0.39 in) or more of precipitation per year at Willow Tree (Valais)
Year	Days	Decade average
1882	22	24.9
1883	17	24.9
1884	25	24.9
1885	15	24.9
1886	33	24.9
1887	40	24.9
1888	14	24.9
1889	33	24.9
1890	34	25.5
1891	29	25.5
1892	26	25.5
1893	31	25.5
1894	24	25.5
1895	25	25.5
1896	28	25.5
1897	24	25.5
1898	17	25.5
1899	17	25.5
1900	21	23.3
1901	18	23.3
1903	28	23.3
1904	22	23.3
1905	20	23.3
1906	27	23.3
1907	18	23.3
1908	27	23.3
1909	29	23.3
1910	21	22.7
1911	31	22.7
1912	14	22.7
1913	24	22.7
1914	22	22.7
1915	16	22.7
1916	42	22.7
1917	28	22.7
1918	16	22.7
1919	13	22.7
1920	26	21.8
1921	34	21.8
1922	15	21.8
1923	19	21.8
1925	16	21.8
1926	25	21.8
1927	17	21.8
1928	22	21.8
1929	22	21.8
1930	23	20.8
1931	25	20.8
1932	15	20.8
1933	27	20.8
1934	27	20.8
1935	16	20.8
1936	23	20.8
1937	14	20.8
1938	19	20.8
1939	19	20.8
1940	10	21.5
1941	19	21.5
1942	29	21.5
1943	19	21.5
1944	15	21.5
1945	27	21.5
1946	12	21.5
1947	32	21.5
1948	21	21.5
1949	31	21.5
1950	39	27
1951	17	27
1952	22	27
1953	20	27
1954	27	27
1955	36	27
1956	39	27
1957	20	27
1958	19	27
1959	31	27
1960	27	24.1
1961	23	24.1
1962	27	24.1
1963	30	24.1
1964	25	24.1
1965	17	24.1
1966	23	24.1
1967	14	24.1
1968	24	24.1
1969	31	24.1
1970	37	27.3
1971	28	27.3
1972	25	27.3
1973	32	27.3
1974	18	27.3
1975	19	27.3
1976	29	27.3
1977	29	27.3
1978	34	27.3
1979	22	27.3
1980	15	24.8
1981	21	24.8
1982	16	24.8
1983	36	24.8
1984	32	24.8
1985	21	24.8
1986	20	24.8
1987	30	24.8
1988	30	24.8
1989	27	24.8
1990	23	25.4
1991	20	25.4
1992	22	25.4
1993	30	25.4
1994	15	25.4
1995	26	25.4
1996	24	25.4
1997	23	25.4
1998	39	25.4
1999	32	25.4
2000	30	21.9
2001	22	21.9
2002	10	21.9
2003	18	21.9
2004	28	21.9
2005	26	21.9
2006	14	21.9
2007	24	21.9
2008	29	21.9
2009	18	21.9
2010	43	19.8
2011	15	19.8
2012	21	19.8
2013	17	19.8
2014	19	19.8
2015	18	19.8
2016	29	19.8
2017	16	19.8
2018	13	19.8
2019	7	19.8
2020	30	28.2
2021	33	28.2
2022	31	28.2
2023	18	28.2
2024	34	28.2
2025	23	28.2

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

First to last qualifying date each year at Willow Tree (Valais)
Year	First date	Last date
1882	1882-02-05	1882-12-24
1883	1883-02-02	1883-11-07
1884	1884-01-11	1884-12-14
1885	1885-01-19	1885-12-24
1886	1886-01-16	1886-12-08
1887	1887-01-18	1887-12-27
1888	1888-01-08	1888-12-17
1889	1889-01-27	1889-12-20
1890	1890-01-12	1890-12-29
1891	1891-01-04	1891-12-12
1892	1892-01-01	1892-12-31
1893	1893-01-08	1893-12-16
1894	1894-01-06	1894-12-29
1895	1895-01-05	1895-12-26
1896	1896-01-17	1896-12-16
1897	1897-01-10	1897-12-31
1898	1898-01-02	1898-12-25
1899	1899-01-19	1899-11-08
1900	1900-01-09	1900-12-22
1901	1901-01-01	1901-11-21
1903	1903-03-01	1903-12-22
1904	1904-01-03	1904-12-18
1905	1905-02-17	1905-12-15
1906	1906-02-19	1906-12-25
1907	1907-01-03	1907-12-28
1908	1908-01-08	1908-12-11
1909	1909-01-20	1909-12-25
1910	1910-01-11	1910-12-18
1911	1911-01-12	1911-12-05
1912	1912-01-06	1912-10-27
1913	1913-01-04	1913-12-19
1914	1914-01-19	1914-12-31
1915	1915-03-27	1915-12-16
1916	1916-01-16	1916-12-13
1917	1917-01-19	1917-12-26
1918	1918-01-11	1918-11-26
1919	1919-01-20	1919-12-28
1920	1920-01-04	1920-12-25
1921	1921-02-17	1921-12-31
1922	1922-01-08	1922-12-18
1923	1923-01-06	1923-12-27
1925	1925-01-05	1925-12-31
1926	1926-01-06	1926-12-27
1927	1927-01-21	1927-12-20
1928	1928-01-19	1928-12-22
1929	1929-01-08	1929-12-30
1930	1930-01-24	1930-12-17
1931	1931-01-18	1931-12-09
1932	1932-01-31	1932-12-16
1933	1933-01-21	1933-12-21
1934	1934-01-26	1934-12-20
1935	1935-01-04	1935-12-02
1936	1936-01-09	1936-12-14
1937	1937-01-01	1937-12-29
1938	1938-01-28	1938-11-29
1939	1939-01-01	1939-12-26
1940	1940-01-25	1940-12-21
1941	1941-01-01	1941-10-27
1942	1942-01-15	1942-12-25
1943	1943-01-04	1943-12-29
1944	1944-01-12	1944-11-25
1945	1945-01-12	1945-12-19
1946	1946-01-18	1946-12-29
1947	1947-01-07	1947-12-25
1948	1948-01-02	1948-12-04
1949	1949-01-09	1949-12-20
1950	1950-01-01	1950-11-25
1951	1951-01-08	1951-12-09
1952	1952-01-06	1952-12-31
1953	1953-01-06	1953-11-28
1954	1954-01-01	1954-12-06
1955	1955-01-21	1955-12-28
1956	1956-01-12	1956-12-22
1957	1957-01-07	1957-12-31
1958	1958-01-29	1958-12-28
1959	1959-01-04	1959-12-26
1960	1960-01-14	1960-12-16
1961	1961-01-03	1961-12-19
1962	1962-01-11	1962-12-25
1963	1963-01-04	1963-12-10
1964	1964-01-14	1964-10-31
1965	1965-01-24	1965-12-15
1966	1966-02-05	1966-12-30
1967	1967-01-26	1967-12-30
1968	1968-01-05	1968-12-25
1969	1969-01-01	1969-12-24
1970	1970-01-02	1970-12-29
1971	1971-01-11	1971-12-16
1972	1972-01-13	1972-12-08
1973	1973-01-12	1973-12-30
1974	1974-01-02	1974-11-18
1975	1975-01-04	1975-12-06
1976	1976-01-13	1976-12-24
1977	1977-01-12	1977-12-27
1978	1978-01-16	1978-12-26
1979	1979-01-18	1979-11-24
1980	1980-01-03	1980-12-14
1981	1981-01-27	1981-12-27
1982	1982-01-12	1982-12-19
1983	1983-01-02	1983-12-27
1984	1984-01-01	1984-12-26
1985	1985-01-16	1985-12-09
1986	1986-01-18	1986-12-17
1987	1987-01-01	1987-12-22
1988	1988-01-03	1988-12-27
1989	1989-01-01	1989-12-24
1990	1990-01-08	1990-10-20
1991	1991-01-06	1991-12-13
1992	1992-01-01	1992-12-26
1993	1993-01-12	1993-12-23
1994	1994-01-18	1994-12-25
1995	1995-01-02	1995-12-31
1996	1996-01-02	1996-12-31
1997	1997-01-29	1997-12-28
1998	1998-01-19	1998-12-16
1999	1999-01-10	1999-12-30
2000	2000-01-27	2000-12-15
2001	2001-01-08	2001-12-31
2002	2002-01-08	2002-12-26
2003	2003-01-02	2003-12-13
2004	2004-01-11	2004-12-25
2005	2005-01-17	2005-12-17
2006	2006-01-12	2006-12-30
2007	2007-01-02	2007-12-23
2008	2008-01-14	2008-12-24
2009	2009-01-09	2009-12-27
2010	2010-01-02	2010-12-27
2011	2011-01-12	2011-12-12
2012	2012-01-09	2012-12-26
2013	2013-01-19	2013-11-24
2014	2014-02-17	2014-12-26
2015	2015-01-12	2015-11-13
2016	2016-01-16	2016-12-25
2017	2017-01-01	2017-12-30
2018	2018-01-12	2018-12-15
2019	2019-01-10	2019-11-25
2020	2020-01-16	2020-12-29
2021	2021-01-05	2021-12-09
2022	2022-01-02	2022-12-13
2023	2023-01-23	2023-12-24
2024	2024-01-04	2024-12-28
2025	2025-01-08	2025-12-12

Every Fixed Threshold

Fixed thresholds at Willow Tree (Valais)
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	142	43	2010	23
25 mm (0.98 in): Days with 25 mm or more rain	141	19	2010	7
50 mm (1.97 in): Days with 50 mm or more rain	103	7	1950	2
100 mm (3.94 in): Days with 100 mm or more rain	17	2	1950	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1882.

Download the Data

Data for Willow Tree (Valais) 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).

Willow Tree (Valais) Threshold Days by Year (ASN00055057)

Key Facts for Willow Tree (Valais) Thresholds

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

Every Fixed Threshold

Download the Data

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