Valley Head Threshold Days by Year (USC00018469)

18 fixed thresholds counted per year at Valley Head (USC00018469): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Valley Head Thresholds

Valley Head: days with a maximum temperature at or above 30 C (86 F) in 122 years, most in 1911 with 130.
Valley Head: days with a maximum temperature at or above 90 F (32.2 C) in 122 years, most in 1911 with 101.
Valley Head: nights with a minimum temperature at or below 0 C (32 F) in 116 years, most in 1968 with 125.
Valley Head: nights with a minimum temperature at or above 20 C (68 F) in 116 years, most in 1896 with 73.
18 fixed thresholds have at least one qualifying day at Valley Head.

Days at or above 30 C (86 F)

122 years with a qualifying day

Days per year at Valley Head with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 130 in 1911.

Days at or above 30 C (86 F) per year at Valley Head
Year	Days	Decade average
1893	55	79.3
1894	56	79.3
1895	58	79.3
1896	79	79.3
1897	78	79.3
1898	121	79.3
1899	108	79.3
1900	97	99.1
1901	89	99.1
1902	114	99.1
1903	95	99.1
1904	95	99.1
1905	100	99.1
1906	96	99.1
1907	107	99.1
1910	102	108.4
1911	130	108.4
1912	102	108.4
1913	106	108.4
1914	122	108.4
1915	113	108.4
1916	103	108.4
1917	88	108.4
1918	106	108.4
1919	112	108.4
1921	114	97.3
1922	97	97.3
1923	89	97.3
1924	99	97.3
1925	100	97.3
1926	109	97.3
1927	92	97.3
1928	78	97.3
1932	58	83.8
1934	108	83.8
1936	98	83.8
1937	84	83.8
1938	70	83.8
1939	85	83.8
1941	125	94.3
1942	106	94.3
1943	99	94.3
1944	110	94.3
1945	87	94.3
1946	75	94.3
1947	85	94.3
1948	83	94.3
1949	79	94.3
1950	58	94
1951	100	94
1952	98	94
1953	107	94
1954	115	94
1956	96	94
1957	98	94
1958	83	94
1959	91	94
1960	106	74.6
1961	66	74.6
1962	102	74.6
1963	86	74.6
1964	92	74.6
1965	85	74.6
1966	65	74.6
1967	16	74.6
1968	56	74.6
1969	72	74.6
1970	88	62.8
1971	55	62.8
1972	62	62.8
1973	70	62.8
1974	46	62.8
1975	53	62.8
1976	38	62.8
1977	87	62.8
1978	82	62.8
1979	47	62.8
1980	99	70.9
1981	60	70.9
1982	57	70.9
1983	72	70.9
1984	68	70.9
1985	58	70.9
1986	89	70.9
1987	82	70.9
1988	77	70.9
1989	47	70.9
1990	81	69.2
1991	74	69.2
1992	44	69.2
1993	82	69.2
1994	34	69.2
1995	71	69.2
1996	62	69.2
1997	59	69.2
1998	106	69.2
1999	79	69.2
2000	72	68.5
2001	41	68.5
2002	84	68.5
2003	42	68.5
2004	43	68.5
2005	70	68.5
2006	86	68.5
2007	104	68.5
2008	76	68.5
2009	67	68.5
2010	108	75.4
2011	88	75.4
2012	78	75.4
2014	46	75.4
2015	57	75.4
2016	108	75.4
2017	36	75.4
2018	72	75.4
2019	86	75.4
2020	44	46.8
2022	58	46.8
2023	31	46.8
2024	56	46.8
2025	42	46.8
2026	50	46.8

For each year, a bar from the first to the last day at Valley Head meeting 30 C (86 F).

First to last qualifying date each year at Valley Head
Year	First date	Last date
1893	1893-05-26	1893-09-22
1894	1894-04-29	1894-10-18
1895	1895-05-05	1895-09-26
1896	1896-04-12	1896-09-19
1897	1897-05-07	1897-10-09
1898	1898-05-01	1898-10-06
1899	1899-04-27	1899-09-11
1900	1900-05-12	1900-10-02
1901	1901-04-30	1901-09-14
1902	1902-04-25	1902-09-26
1903	1903-05-20	1903-10-12
1904	1904-05-22	1904-10-10
1905	1905-04-28	1905-10-02
1906	1906-04-12	1906-09-23
1907	1907-03-20	1907-10-06
1910	1910-03-24	1910-10-17
1911	1911-04-06	1911-10-08
1912	1912-05-06	1912-10-12
1913	1913-04-19	1913-10-10
1914	1914-04-17	1914-10-09
1915	1915-04-19	1915-10-17
1916	1916-05-06	1916-10-16
1917	1917-04-18	1917-09-21
1918	1918-05-09	1918-10-06
1919	1919-04-20	1919-10-31
1921	1921-05-22	1921-09-29
1922	1922-05-09	1922-10-05
1923	1923-05-22	1923-10-02
1924	1924-05-05	1924-10-18
1925	1925-04-18	1925-10-17
1926	1926-05-08	1926-11-01
1927	1927-04-01	1927-10-30
1928	1928-05-10	1928-10-15
1932	1932-05-29	1932-09-16
1934	1934-05-01	1934-10-08
1936	1936-05-09	1936-09-28
1937	1937-05-21	1937-09-21
1938	1938-06-06	1938-10-19
1939	1939-06-05	1939-10-09
1941	1941-04-19	1941-10-23
1942	1942-04-19	1942-10-29
1943	1943-04-28	1943-09-15
1944	1944-05-16	1944-10-06
1945	1945-05-27	1945-09-28
1946	1946-06-08	1946-09-21
1947	1947-05-15	1947-09-21
1948	1948-05-11	1948-09-23
1949	1949-05-05	1949-09-19
1950	1950-05-09	1950-09-20
1951	1951-04-27	1951-10-06
1952	1952-05-01	1952-10-01
1953	1953-04-09	1953-10-05
1954	1954-05-31	1954-10-07
1956	1956-05-13	1956-10-01
1957	1957-05-14	1957-09-23
1958	1958-05-17	1958-09-27
1959	1959-05-02	1959-10-06
1960	1960-04-24	1960-09-22
1961	1961-06-01	1961-09-28
1962	1962-05-09	1962-09-14
1963	1963-05-09	1963-10-23
1964	1964-05-02	1964-09-24
1965	1965-04-24	1965-10-15
1966	1966-06-07	1966-09-12
1967	1967-05-27	1967-08-03
1968	1968-05-26	1968-09-05
1969	1969-05-30	1969-09-19
1970	1970-04-30	1970-10-06
1971	1971-04-21	1971-10-05
1972	1972-06-05	1972-09-24
1973	1973-06-04	1973-10-08
1974	1974-05-18	1974-09-14
1975	1975-04-28	1975-10-15
1976	1976-06-11	1976-09-09
1977	1977-04-12	1977-10-02
1978	1978-04-10	1978-09-22
1979	1979-05-11	1979-09-07
1980	1980-05-29	1980-09-25
1981	1981-05-31	1981-09-14
1982	1982-05-23	1982-09-19
1983	1983-06-22	1983-09-20
1984	1984-05-28	1984-09-26
1985	1985-05-15	1985-09-12
1986	1986-04-27	1986-10-05
1987	1987-04-23	1987-09-17
1988	1988-05-31	1988-09-25
1989	1989-04-28	1989-09-15
1990	1990-06-07	1990-09-22
1991	1991-05-17	1991-09-19
1992	1992-05-19	1992-09-11
1993	1993-06-05	1993-09-26
1994	1994-06-02	1994-09-01
1995	1995-04-11	1995-09-11
1996	1996-05-19	1996-09-08
1997	1997-06-14	1997-09-21
1998	1998-05-14	1998-10-02
1999	1999-04-04	1999-09-16
2000	2000-05-12	2000-09-21
2001	2001-04-11	2001-09-24
2002	2002-04-19	2002-10-07
2003	2003-06-25	2003-09-21
2004	2004-05-09	2004-08-30
2005	2005-05-13	2005-09-25
2006	2006-04-18	2006-10-06
2007	2007-05-02	2007-10-09
2008	2008-05-31	2008-09-14
2009	2009-04-25	2009-09-26
2010	2010-04-06	2010-10-12
2011	2011-05-11	2011-09-15
2012	2012-05-01	2012-09-08
2014	2014-05-25	2014-09-11
2015	2015-06-07	2015-09-05
2016	2016-05-26	2016-10-20
2017	2017-04-29	2017-09-28
2018	2018-05-12	2018-09-23
2019	2019-05-22	2019-10-04
2020	2020-06-06	2020-09-12
2022	2022-05-19	2022-09-22
2023	2023-07-01	2023-09-12
2024	2024-06-14	2024-09-24
2025	2025-06-06	2025-09-20
2026	2026-04-02	2026-08-31

Every Fixed Threshold

Fixed thresholds at Valley Head
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	122	130	1911	50
35 C (95 F): Days	92	54	1954	2
40 C (104 F): Days	8	2	1952	1
90 F (32.2 C): Days	122	101	1911	10
100 F (37.8 C): Days	27	16	1914	2
0 C (32 F): Ice days (max	104	13	1977	5
0 C (32 F): Frost days (min	116	125	1968	46
-10 C (14 F): Days with min	108	34	1977	6
-20 C (-4 F): Days with min	14	4	1958	2
20 C (68 F): Tropical nights (min	116	73	1896	33
25 C (77 F): Days with min	6	3	1954	3
10 mm (0.39 in): Days with 10 mm or more rain	111	64	1901	33
25 mm (0.98 in): Days with 25 mm or more rain	111	33	1900	7
50 mm (1.97 in): Days with 50 mm or more rain	109	11	1900	3
100 mm (3.94 in): Days with 100 mm or more rain	26	3	1936	1
200 mm (7.87 in): Days with 200 mm or more rain	2	1	1936	1
10 cm (3.9 in): Days with 10 cm or more snowfall	14	2	1987	1
25 cm (9.8 in): Days with 25 cm or more snowfall	2	1	1987	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1893.

Download the Data

Data for Valley Head 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).

Valley Head Threshold Days by Year (USC00018469)

Key Facts for Valley Head Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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