Barrett Dam Threshold Days by Year (USC00040514)

16 fixed thresholds counted per year at Barrett Dam (USC00040514): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Barrett Dam Thresholds

Barrett Dam: days with a maximum temperature at or above 30 C (86 F) in 66 years, most in 1958 with 144.
Barrett Dam: days with a maximum temperature at or above 35 C (95 F) in 66 years, most in 1917 with 75.
Barrett Dam: days with a maximum temperature at or above 90 F (32.2 C) in 66 years, most in 1917 with 109.
Barrett Dam: days with a maximum temperature at or above 100 F (37.8 C) in 65 years, most in 1926 with 34.
16 fixed thresholds have at least one qualifying day at Barrett Dam.

Days at or above 30 C (86 F)

66 years with a qualifying day

Days per year at Barrett Dam with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 144 in 1958.

Days at or above 30 C (86 F) per year at Barrett Dam
Year	Days	Decade average
1914	59	113.6
1915	94	113.6
1917	141	113.6
1918	136	113.6
1919	138	113.6
1920	105	111.6
1921	121	111.6
1922	125	111.6
1923	83	111.6
1924	126	111.6
1925	112	111.6
1926	126	111.6
1927	111	111.6
1928	102	111.6
1929	105	111.6
1930	97	110.2
1931	119	110.2
1932	95	110.2
1933	106	110.2
1934	118	110.2
1935	106	110.2
1936	112	110.2
1937	123	110.2
1938	113	110.2
1939	113	110.2
1940	121	107.7
1941	88	107.7
1942	95	107.7
1943	115	107.7
1944	91	107.7
1945	89	107.7
1946	117	107.7
1947	114	107.7
1948	107	107.7
1949	140	107.7
1950	122	118.2
1951	115	118.2
1952	131	118.2
1953	99	118.2
1954	122	118.2
1955	109	118.2
1956	116	118.2
1957	110	118.2
1958	144	118.2
1959	114	118.2
1960	134	114.2
1961	118	114.2
1962	122	114.2
1963	106	114.2
1964	112	114.2
1965	112	114.2
1966	119	114.2
1967	122	114.2
1968	101	114.2
1969	96	114.2
1970	114	106.8
1971	115	106.8
1972	104	106.8
1973	101	106.8
1974	115	106.8
1975	101	106.8
1976	87	106.8
1977	112	106.8
1978	120	106.8
1979	99	106.8
1980	99	99

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

First to last qualifying date each year at Barrett Dam
Year	First date	Last date
1914	1914-04-18	1914-11-04
1915	1915-03-23	1915-10-28
1917	1917-03-25	1917-11-13
1918	1918-01-01	1918-11-19
1919	1919-04-06	1919-10-21
1920	1920-04-05	1920-10-08
1921	1921-02-12	1921-11-10
1922	1922-04-20	1922-10-26
1923	1923-05-04	1923-11-27
1924	1924-01-31	1924-11-24
1925	1925-03-04	1925-10-03
1926	1926-04-25	1926-11-21
1927	1927-04-21	1927-11-17
1928	1928-04-29	1928-11-22
1929	1929-05-03	1929-11-19
1930	1930-03-24	1930-11-05
1931	1931-03-23	1931-11-07
1932	1932-03-29	1932-11-09
1933	1933-05-25	1933-11-26
1934	1934-03-12	1934-11-07
1935	1935-05-21	1935-10-26
1936	1936-04-10	1936-11-19
1937	1937-04-15	1937-11-23
1938	1938-04-18	1938-12-07
1939	1939-04-08	1939-11-01
1940	1940-04-12	1940-12-09
1941	1941-05-07	1941-11-07
1942	1942-05-20	1942-11-14
1943	1943-04-02	1943-11-05
1944	1944-05-06	1944-10-21
1945	1945-04-30	1945-11-05
1946	1946-04-12	1946-10-26
1947	1947-03-26	1947-10-26
1948	1948-04-16	1948-10-26
1949	1949-04-11	1949-11-25
1950	1950-04-18	1950-12-11
1951	1951-01-25	1951-11-06
1952	1952-04-05	1952-10-30
1953	1953-01-11	1953-11-30
1954	1954-02-23	1954-11-27
1955	1955-03-26	1955-11-11
1956	1956-05-16	1956-11-12
1957	1957-02-14	1957-10-10
1958	1958-04-20	1958-12-18
1959	1959-01-18	1959-11-25
1960	1960-03-21	1960-10-31
1961	1961-04-03	1961-10-18
1962	1962-04-07	1962-11-09
1963	1963-02-06	1963-11-12
1964	1964-04-14	1964-10-29
1965	1965-04-20	1965-11-05
1966	1966-03-31	1966-11-03
1967	1967-05-16	1967-11-15
1968	1968-05-18	1968-10-29
1969	1969-03-31	1969-11-02
1970	1970-05-05	1970-11-02
1971	1971-01-19	1971-11-05
1972	1972-03-05	1972-10-02
1973	1973-05-10	1973-11-12
1974	1974-05-22	1974-11-13
1975	1975-05-12	1975-11-05
1976	1976-05-01	1976-11-06
1977	1977-02-17	1977-11-27
1978	1978-05-13	1978-11-09
1979	1979-05-13	1979-12-06
1980	1980-04-17	1980-11-29

Every Fixed Threshold

Fixed thresholds at Barrett Dam
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	66	144	1958	99
35 C (95 F): Days	66	75	1917	33
40 C (104 F): Days	61	18	1917	3
45 C (113 F): Days	3	2	1917	2
90 F (32.2 C): Days	66	109	1917	70
100 F (37.8 C): Days	65	34	1926	9
110 F (43.3 C): Days	11	4	1917	1
0 C (32 F): Ice days (max	1	3	1923	3
0 C (32 F): Frost days (min	63	126	1917	10
20 C (68 F): Tropical nights (min	46	26	1947	13
25 C (77 F): Days with min	3	4	1925	2
10 mm (0.39 in): Days with 10 mm or more rain	57	32	1978	26
25 mm (0.98 in): Days with 25 mm or more rain	55	11	1978	11
50 mm (1.97 in): Days with 50 mm or more rain	25	5	1980	5
100 mm (3.94 in): Days with 100 mm or more rain	5	2	1927	1
10 cm (3.9 in): Days with 10 cm or more snowfall	1	1	1949	1

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 Barrett 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).

Barrett Dam Threshold Days by Year (USC00040514)

Key Facts for Barrett Dam Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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