Collbran Threshold Days by Year (USC00051741)

15 fixed thresholds counted per year at Collbran (USC00051741): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Collbran Thresholds

Collbran: days with 10 mm (0.39 in) or more of precipitation in 94 years, most in 1957 with 21.
Collbran: days with a maximum temperature at or above 30 C (86 F) in 91 years, most in 2025 with 82.
Collbran: days with a maximum temperature at or below 0 C (32 F) in 91 years, most in 1913 with 49.
Collbran: nights with a minimum temperature at or below 0 C (32 F) in 90 years, most in 1975 with 242.
15 fixed thresholds have at least one qualifying day at Collbran.

Days at or above 30 C (86 F)

91 years with a qualifying day

Days per year at Collbran with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 82 in 2025.

Days at or above 30 C (86 F) per year at Collbran
Year	Days	Decade average
1901	59	39.8
1902	66	39.8
1903	49	39.8
1904	36	39.8
1905	53	39.8
1906	32	39.8
1907	33	39.8
1908	14	39.8
1909	16	39.8
1910	26	25.1
1911	10	25.1
1912	5	25.1
1913	15	25.1
1914	25	25.1
1915	28	25.1
1916	20	25.1
1917	34	25.1
1918	24	25.1
1919	64	25.1
1922	54	39.3
1923	28	39.3
1924	51	39.3
1925	37	39.3
1927	25	39.3
1928	35	39.3
1929	45	39.3
1930	36	54.8
1931	69	54.8
1932	45	54.8
1933	68	54.8
1934	75	54.8
1935	55	54.8
1936	63	54.8
1937	51	54.8
1938	36	54.8
1939	50	54.8
1940	61	36.6
1941	27	36.6
1942	28	36.6
1943	34	36.6
1944	30	36.6
1945	26	36.6
1946	45	36.6
1947	33	36.6
1948	35	36.6
1949	47	36.6
1950	44	54.4
1951	42	54.4
1952	45	54.4
1953	58	54.4
1954	57	54.4
1955	58	54.4
1956	67	54.4
1957	32	54.4
1958	67	54.4
1959	74	54.4
1960	65	58
1961	56	58
1962	67	58
1963	64	58
1964	54	58
1965	33	58
1966	67	58
1970	45	47.4
1971	51	47.4
1972	47	47.4
1973	33	47.4
1975	43	47.4
1976	46	47.4
1979	67	47.4
1980	68	43.2
1981	55	43.2
1982	37	43.2
1983	32	43.2
1984	40	43.2
1985	50	43.2
1986	33	43.2
1987	32	43.2
1988	51	43.2
1989	34	43.2
1990	47	43.8
1991	36	43.8
1992	29	43.8
1993	43	43.8
1994	80	43.8
1995	45	43.8
1998	44	43.8
1999	26	43.8
2024	75	81.7
2025	82	81.7
2026	88	81.7

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

First to last qualifying date each year at Collbran
Year	First date	Last date
1901	1901-05-19	1901-09-02
1902	1902-05-25	1902-09-10
1903	1903-06-26	1903-09-04
1904	1904-06-13	1904-09-09
1905	1905-06-11	1905-10-06
1906	1906-06-10	1906-09-10
1907	1907-06-28	1907-08-24
1908	1908-06-22	1908-08-09
1909	1909-06-28	1909-08-15
1910	1910-06-19	1910-08-22
1911	1911-07-10	1911-08-19
1912	1912-07-17	1912-08-26
1913	1913-07-02	1913-08-27
1914	1914-06-28	1914-09-19
1915	1915-06-22	1915-09-01
1916	1916-06-18	1916-07-24
1917	1917-06-28	1917-08-25
1918	1918-06-17	1918-08-29
1919	1919-05-20	1919-09-12
1922	1922-06-07	1922-08-31
1923	1923-06-12	1923-09-11
1924	1924-06-11	1924-09-08
1925	1925-05-19	1925-08-22
1927	1927-06-08	1927-08-22
1928	1928-06-28	1928-09-16
1929	1929-06-21	1929-08-31
1930	1930-06-07	1930-08-29
1931	1931-06-07	1931-09-10
1932	1932-06-15	1932-08-24
1933	1933-06-09	1933-09-17
1934	1934-05-18	1934-09-04
1935	1935-06-08	1935-09-19
1936	1936-05-30	1936-08-28
1937	1937-06-16	1937-08-27
1938	1938-06-02	1938-08-28
1939	1939-06-04	1939-09-02
1940	1940-05-31	1940-09-08
1941	1941-05-12	1941-08-07
1942	1942-06-17	1942-08-22
1943	1943-06-18	1943-08-15
1944	1944-06-20	1944-08-23
1945	1945-06-21	1945-09-06
1946	1946-06-04	1946-08-18
1947	1947-05-03	1947-09-04
1948	1948-05-16	1948-09-04
1949	1949-06-16	1949-09-26
1950	1950-06-10	1950-09-03
1951	1951-05-27	1951-08-18
1952	1952-06-06	1952-09-04
1953	1953-06-10	1953-09-15
1954	1954-05-21	1954-09-22
1955	1955-06-20	1955-09-08
1956	1956-05-31	1956-09-20
1957	1957-06-05	1957-08-24
1958	1958-05-27	1958-09-12
1959	1959-05-13	1959-09-13
1960	1960-06-03	1960-09-06
1961	1961-06-09	1961-08-28
1962	1962-06-11	1962-09-19
1963	1963-06-01	1963-09-30
1964	1964-05-16	1964-09-13
1965	1965-07-03	1965-08-30
1966	1966-06-15	1966-09-24
1970	1970-06-20	1970-08-30
1971	1971-06-15	1971-09-12
1972	1972-06-09	1972-09-14
1973	1973-06-12	1973-08-20
1975	1975-06-28	1975-09-06
1976	1976-06-19	1976-09-05
1979	1979-06-12	1979-09-18
1980	1980-06-08	1980-09-30
1981	1981-06-07	1981-09-05
1982	1982-06-28	1982-09-04
1983	1983-06-22	1983-09-08
1984	1984-05-31	1984-09-06
1985	1985-06-08	1985-09-02
1986	1986-06-15	1986-08-28
1987	1987-06-14	1987-08-20
1988	1988-06-10	1988-09-09
1989	1989-06-16	1989-09-02
1990	1990-06-05	1990-09-16
1991	1991-06-19	1991-09-05
1992	1992-06-20	1992-08-22
1993	1993-06-15	1993-09-12
1994	1994-05-31	1994-09-29
1995	1995-06-14	1995-09-17
1998	1998-06-28	1998-09-09
1999	1999-06-25	1999-08-26
2024	2024-06-06	2024-10-01
2025	2025-06-01	2025-09-11
2026	2026-05-13	2026-09-14

Every Fixed Threshold

Fixed thresholds at Collbran
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	91	82	2025	88
35 C (95 F): Days	46	18	2025	33
90 F (32.2 C): Days	88	56	2025	62
100 F (37.8 C): Days	3	2	1902	6
0 C (32 F): Ice days (max	91	49	1913	3
0 C (32 F): Frost days (min	90	242	1975	97
-10 C (14 F): Days with min	90	100	1973	21
-20 C (-4 F): Days with min	83	28	1930	2
-30 C (-22 F): Days with min	20	3	1924	2
20 C (68 F): Tropical nights (min	4	2	1966	2
10 mm (0.39 in): Days with 10 mm or more rain	94	21	1957	4
25 mm (0.98 in): Days with 25 mm or more rain	45	5	1906	1
50 mm (1.97 in): Days with 50 mm or more rain	2	1	1914	1
10 cm (3.9 in): Days with 10 cm or more snowfall	85	13	1909	1
25 cm (9.8 in): Days with 25 cm or more snowfall	15	3	1909	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1901.

Download the Data

Data for Collbran 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 2026-10-17. Last revised 17 October 2026 (2026-10-17).

Collbran Threshold Days by Year (USC00051741)

Key Facts for Collbran Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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