Dufur Threshold Days by Year (USC00352440)

16 fixed thresholds counted per year at Dufur (USC00352440): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Dufur Thresholds

Dufur: days with 10 mm (0.39 in) or more of precipitation in 96 years, most in 1995 with 15.
Dufur: nights with a minimum temperature at or below 0 C (32 F) in 95 years, most in 1920 with 179.
Dufur: days with a maximum temperature at or above 30 C (86 F) in 89 years, most in 1958 with 84.
Dufur: days with a maximum temperature at or above 90 F (32.2 C) in 89 years, most in 1958 with 61.
16 fixed thresholds have at least one qualifying day at Dufur.

Days at or above 30 C (86 F)

89 years with a qualifying day

Days per year at Dufur with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 84 in 1958.

Days at or above 30 C (86 F) per year at Dufur
Year	Days	Decade average
1913	31	31.2
1916	22	31.2
1917	40	31.2
1918	35	31.2
1919	28	31.2
1920	24	30.7
1921	18	30.7
1922	36	30.7
1923	27	30.7
1924	29	30.7
1925	33	30.7
1926	32	30.7
1927	27	30.7
1928	42	30.7
1929	39	30.7
1930	45	46.8
1931	54	46.8
1932	42	46.8
1933	38	46.8
1934	50	46.8
1935	45	46.8
1936	42	46.8
1937	41	46.8
1938	64	46.8
1939	47	46.8
1940	53	45.1
1941	43	45.1
1943	42	45.1
1946	43	45.1
1947	45	45.1
1948	38	45.1
1949	52	45.1
1950	66	52.9
1951	63	52.9
1952	60	52.9
1953	43	52.9
1954	29	52.9
1955	44	52.9
1956	54	52.9
1957	43	52.9
1958	84	52.9
1959	43	52.9
1960	52	46.7
1961	64	46.7
1962	45	46.7
1963	49	46.7
1965	33	46.7
1966	34	46.7
1967	66	46.7
1968	34	46.7
1969	43	46.7
1970	47	38.4
1971	34	38.4
1972	41	38.4
1973	49	38.4
1974	47	38.4
1975	33	38.4
1976	23	38.4
1977	42	38.4
1978	33	38.4
1979	35	38.4
1980	19	42.6
1981	40	42.6
1982	37	42.6
1983	35	42.6
1984	44	42.6
1985	53	42.6
1987	65	42.6
1988	48	42.6
1990	53	57.2
1991	57	57.2
1992	52	57.2
1993	37	57.2
1994	65	57.2
1995	50	57.2
1996	64	57.2
1997	58	57.2
1998	69	57.2
1999	67	57.2
2000	68	62.5
2001	66	62.5
2002	67	62.5
2003	74	62.5
2004	55	62.5
2006	60	62.5
2007	48	62.5
2009	62	62.5
2010	36	48
2014	60	48

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

First to last qualifying date each year at Dufur
Year	First date	Last date
1913	1913-06-01	1913-09-11
1916	1916-06-13	1916-10-16
1917	1917-06-14	1917-09-17
1918	1918-06-05	1918-09-18
1919	1919-07-04	1919-10-07
1920	1920-06-29	1920-08-22
1921	1921-06-23	1921-08-29
1922	1922-05-31	1922-09-13
1923	1923-06-28	1923-09-13
1924	1924-05-10	1924-09-07
1925	1925-06-19	1925-09-03
1926	1926-04-28	1926-08-25
1927	1927-06-21	1927-08-19
1928	1928-05-19	1928-09-04
1929	1929-05-21	1929-09-15
1930	1930-06-06	1930-09-20
1931	1931-05-05	1931-09-04
1932	1932-06-09	1932-10-02
1933	1933-04-26	1933-08-27
1934	1934-04-19	1934-09-05
1935	1935-06-04	1935-10-01
1936	1936-05-10	1936-09-21
1937	1937-05-02	1937-09-15
1938	1938-05-22	1938-09-27
1939	1939-05-12	1939-09-24
1940	1940-05-22	1940-09-11
1941	1941-05-23	1941-08-21
1943	1943-05-24	1943-09-25
1946	1946-05-17	1946-09-24
1947	1947-04-13	1947-09-24
1948	1948-05-26	1948-09-14
1949	1949-05-08	1949-09-27
1950	1950-05-26	1950-09-23
1951	1951-05-22	1951-09-19
1952	1952-05-27	1952-10-11
1953	1953-05-05	1953-09-18
1954	1954-05-16	1954-09-26
1955	1955-06-06	1955-09-09
1956	1956-05-16	1956-09-18
1957	1957-04-29	1957-09-24
1958	1958-05-16	1958-10-05
1959	1959-05-13	1959-09-12
1960	1960-06-02	1960-09-30
1961	1961-06-01	1961-09-04
1962	1962-06-15	1962-09-24
1963	1963-05-20	1963-09-28
1965	1965-06-03	1965-08-18
1966	1966-05-03	1966-09-22
1967	1967-05-20	1967-09-28
1968	1968-05-18	1968-09-08
1969	1969-05-09	1969-09-12
1970	1970-05-15	1970-08-30
1971	1971-06-21	1971-08-29
1972	1972-05-28	1972-09-04
1973	1973-05-12	1973-09-12
1974	1974-06-10	1974-09-25
1975	1975-05-31	1975-09-15
1976	1976-06-18	1976-09-30
1977	1977-04-24	1977-08-21
1978	1978-06-03	1978-08-29
1979	1979-06-01	1979-09-18
1980	1980-07-01	1980-10-07
1981	1981-06-25	1981-09-18
1982	1982-06-11	1982-09-03
1983	1983-05-20	1983-08-27
1984	1984-05-28	1984-09-18
1985	1985-05-17	1985-09-03
1987	1987-05-06	1987-10-07
1988	1988-05-11	1988-10-02
1990	1990-05-04	1990-09-29
1991	1991-06-09	1991-10-01
1992	1992-05-04	1992-09-02
1993	1993-05-11	1993-09-30
1994	1994-05-07	1994-09-27
1995	1995-05-15	1995-09-15
1996	1996-05-25	1996-09-30
1997	1997-05-11	1997-09-25
1998	1998-04-30	1998-09-30
1999	1999-04-24	1999-09-29
2000	2000-05-21	2000-09-20
2001	2001-05-11	2001-10-01
2002	2002-06-11	2002-09-24
2003	2003-05-23	2003-09-28
2004	2004-06-03	2004-09-28
2006	2006-05-15	2006-09-29
2007	2007-05-08	2007-09-12
2009	2009-04-21	2009-09-24
2010	2010-06-24	2010-09-03
2014	2014-05-14	2014-10-07

Every Fixed Threshold

Fixed thresholds at Dufur
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	89	84	1958	60
35 C (95 F): Days	87	34	1998	25
40 C (104 F): Days	24	8	1996	2
90 F (32.2 C): Days	89	61	1958	36
100 F (37.8 C): Days	68	18	1998	10
110 F (43.3 C): Days	1	2	1928	2
0 C (32 F): Ice days (max	87	52	1985	23
0 C (32 F): Frost days (min	95	179	1920	100
-10 C (14 F): Days with min	88	46	1916	8
-20 C (-4 F): Days with min	40	11	1924	1
20 C (68 F): Tropical nights (min	12	3	1941	1
10 mm (0.39 in): Days with 10 mm or more rain	96	15	1995	6
25 mm (0.98 in): Days with 25 mm or more rain	39	3	1926	1
50 mm (1.97 in): Days with 50 mm or more rain	1	1	1918	1
10 cm (3.9 in): Days with 10 cm or more snowfall	66	9	1916	2
25 cm (9.8 in): Days with 25 cm or more snowfall	20	3	1919	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1913.

Download the Data

Data for Dufur 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).

Dufur Threshold Days by Year (USC00352440)

Key Facts for Dufur Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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