Canyon Dam Threshold Days by Year (USC00041497)

17 fixed thresholds counted per year at Canyon Dam (USC00041497): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Canyon Dam Thresholds

Canyon Dam: nights with a minimum temperature at or below 0 C (32 F) in 99 years, most in 1929 with 219.
Canyon Dam: days with a maximum temperature at or above 30 C (86 F) in 97 years, most in 1917 with 89.
Canyon Dam: days with a maximum temperature at or above 90 F (32.2 C) in 96 years, most in 1917 with 58.
Canyon Dam: nights with a minimum temperature at or below -10 C (14 F) in 96 years, most in 1932 with 47.
17 fixed thresholds have at least one qualifying day at Canyon Dam.

Days at or above 30 C (86 F)

97 years with a qualifying day

Days per year at Canyon Dam with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 89 in 1917.

Days at or above 30 C (86 F) per year at Canyon Dam
Year	Days	Decade average
1914	75	64.7
1915	55	64.7
1916	42	64.7
1917	89	64.7
1918	56	64.7
1919	71	64.7
1920	54	43.6
1921	43	43.6
1923	34	43.6
1924	49	43.6
1925	27	43.6
1926	42	43.6
1927	49	43.6
1928	48	43.6
1929	46	43.6
1930	46	47.8
1931	61	47.8
1932	61	47.8
1933	59	47.8
1934	43	47.8
1935	21	47.8
1936	51	47.8
1937	44	47.8
1938	36	47.8
1939	56	47.8
1940	56	40.3
1941	21	40.3
1942	43	40.3
1943	14	40.3
1944	45	40.3
1945	58	40.3
1946	46	40.3
1947	37	40.3
1948	42	40.3
1949	41	40.3
1950	53	42.8
1951	67	42.8
1952	54	42.8
1953	40	42.8
1954	34	42.8
1955	50	42.8
1956	28	42.8
1957	32	42.8
1958	34	42.8
1959	36	42.8
1960	47	37.3
1961	40	37.3
1963	24	37.3
1964	31	37.3
1965	20	37.3
1966	47	37.3
1967	42	37.3
1968	42	37.3
1969	43	37.3
1970	56	43.4
1971	44	43.4
1972	42	43.4
1974	53	43.4
1975	41	43.4
1976	27	43.4
1977	61	43.4
1978	29	43.4
1979	38	43.4
1980	19	29.8
1981	61	29.8
1982	17	29.8
1983	13	29.8
1984	34	29.8
1985	30	29.8
1986	32	29.8
1988	59	29.8
1989	3	29.8
1990	17	27.9
1991	29	27.9
1992	43	27.9
1993	9	27.9
1994	40	27.9
1995	21	27.9
1996	45	27.9
1997	20	27.9
1998	34	27.9
1999	21	27.9
2000	35	42
2001	44	42
2002	41	42
2003	55	42
2004	32	42
2006	37	42
2007	39	42
2008	50	42
2009	45	42
2010	39	49.7
2011	20	49.7
2015	54	49.7
2016	57	49.7
2017	70	49.7
2018	58	49.7

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

First to last qualifying date each year at Canyon Dam
Year	First date	Last date
1914	1914-05-28	1914-09-28
1915	1915-06-05	1915-10-06
1916	1916-06-05	1916-09-29
1917	1917-06-08	1917-10-14
1918	1918-06-05	1918-09-20
1919	1919-04-29	1919-09-24
1920	1920-05-16	1920-09-29
1921	1921-05-24	1921-08-06
1923	1923-06-27	1923-09-14
1924	1924-05-15	1924-09-14
1925	1925-06-18	1925-08-08
1926	1926-06-01	1926-08-27
1927	1927-07-01	1927-08-25
1928	1928-06-04	1928-09-05
1929	1929-05-21	1929-09-18
1930	1930-06-09	1930-09-03
1931	1931-07-01	1931-09-14
1932	1932-06-20	1932-10-04
1933	1933-05-29	1933-10-06
1934	1934-06-15	1934-09-17
1935	1935-06-06	1935-09-17
1936	1936-06-21	1936-09-24
1937	1937-06-26	1937-09-17
1938	1938-06-25	1938-09-17
1939	1939-05-28	1939-09-23
1940	1940-06-10	1940-08-31
1941	1941-06-11	1941-08-15
1942	1942-06-29	1942-09-26
1943	1943-07-10	1943-09-24
1944	1944-06-29	1944-09-27
1945	1945-06-19	1945-09-15
1946	1946-06-19	1946-09-25
1947	1947-05-02	1947-09-25
1948	1948-06-27	1948-09-13
1949	1949-06-09	1949-09-23
1950	1950-05-31	1950-09-06
1951	1951-05-25	1951-09-20
1952	1952-06-05	1952-10-06
1953	1953-07-05	1953-09-19
1954	1954-05-18	1954-09-27
1955	1955-06-07	1955-09-11
1956	1956-06-26	1956-09-06
1957	1957-06-21	1957-09-24
1958	1958-07-09	1958-09-07
1959	1959-06-22	1959-09-11
1960	1960-06-01	1960-09-18
1961	1961-06-15	1961-08-22
1963	1963-06-16	1963-09-29
1964	1964-06-24	1964-09-25
1965	1965-06-11	1965-08-09
1966	1966-06-13	1966-09-30
1967	1967-05-21	1967-09-01
1968	1968-06-16	1968-09-06
1969	1969-06-04	1969-09-12
1970	1970-06-02	1970-09-11
1971	1971-07-13	1971-09-16
1972	1972-06-18	1972-09-01
1974	1974-06-10	1974-09-26
1975	1975-06-13	1975-09-09
1976	1976-06-23	1976-09-09
1977	1977-06-05	1977-09-10
1978	1978-06-06	1978-08-29
1979	1979-06-03	1979-09-17
1980	1980-07-18	1980-08-13
1981	1981-06-19	1981-09-17
1982	1982-06-11	1982-09-08
1983	1983-05-28	1983-09-12
1984	1984-05-29	1984-09-10
1985	1985-07-03	1985-08-26
1986	1986-05-29	1986-09-06
1988	1988-06-18	1988-09-09
1989	1989-07-08	1989-07-21
1990	1990-07-11	1990-08-15
1991	1991-06-11	1991-09-26
1992	1992-05-25	1992-09-29
1993	1993-06-26	1993-09-11
1994	1994-06-11	1994-09-23
1995	1995-06-25	1995-09-16
1996	1996-06-03	1996-08-31
1997	1997-07-08	1997-08-15
1998	1998-07-16	1998-09-05
1999	1999-06-23	1999-09-23
2000	2000-06-14	2000-09-21
2001	2001-05-23	2001-09-08
2002	2002-06-07	2002-10-09
2003	2003-05-23	2003-09-29
2004	2004-06-14	2004-09-08
2006	2006-05-17	2006-09-13
2007	2007-06-19	2007-09-12
2008	2008-05-16	2008-09-17
2009	2009-05-18	2009-09-28
2010	2010-06-22	2010-10-01
2011	2011-06-21	2011-08-30
2015	2015-06-07	2015-10-12
2016	2016-06-03	2016-09-28
2017	2017-05-23	2017-09-12
2018	2018-06-13	2018-09-28

Every Fixed Threshold

Fixed thresholds at Canyon Dam
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	97	89	1917	58
35 C (95 F): Days	68	30	1917	7
40 C (104 F): Days	2	2	1914	1
90 F (32.2 C): Days	96	58	1917	34
100 F (37.8 C): Days	19	13	1927	1
0 C (32 F): Ice days (max	92	37	1949	3
0 C (32 F): Frost days (min	99	219	1929	132
-10 C (14 F): Days with min	96	47	1932	5
-20 C (-4 F): Days with min	20	10	1949	2
20 C (68 F): Tropical nights (min	1	1	2000	1
10 mm (0.39 in): Days with 10 mm or more rain	91	55	1983	26
25 mm (0.98 in): Days with 25 mm or more rain	91	25	1983	12
50 mm (1.97 in): Days with 50 mm or more rain	79	11	1995	3
100 mm (3.94 in): Days with 100 mm or more rain	11	1	1917	1
10 cm (3.9 in): Days with 10 cm or more snowfall	68	33	1952	9
25 cm (9.8 in): Days with 25 cm or more snowfall	58	16	1952	3
50 cm (19.7 in): Days with 50 cm or more snowfall	18	3	1952	3

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1914.

Download the Data

Data for Canyon Dam 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).

Canyon Dam Threshold Days by Year (USC00041497)

Key Facts for Canyon Dam Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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