Oregon City Threshold Days by Year

15 fixed thresholds counted per year at Oregon City (USC00356334): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Oregon City Thresholds

Oregon City: days with 10 mm (0.39 in) or more of precipitation in 73 years, most in 1950 with 60.
Oregon City: days with 25 mm (0.98 in) or more of precipitation in 72 years, most in 1996 with 18.
Oregon City: nights with a minimum temperature at or below 0 C (32 F) in 59 years, most in 1985 with 86.
Oregon City: days with a maximum temperature at or above 30 C (86 F) in 58 years, most in 1967 with 67.
15 fixed thresholds have at least one qualifying day at Oregon City.

Days at or above 30 C (86 F)

58 years with a qualifying day

Days per year at Oregon City with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 67 in 1967.

Days at or above 30 C (86 F) per year at Oregon City
Year	Days	Decade average
1948	19	22
1949	25	22
1950	30	28.4
1951	33	28.4
1952	37	28.4
1953	22	28.4
1954	4	28.4
1955	18	28.4
1956	32	28.4
1957	23	28.4
1958	58	28.4
1959	27	28.4
1960	29	33.7
1961	51	33.7
1962	26	33.7
1963	24	33.7
1964	19	33.7
1965	29	33.7
1966	28	33.7
1967	67	33.7
1968	29	33.7
1969	35	33.7
1970	45	33.5
1971	31	33.5
1972	43	33.5
1973	37	33.5
1974	38	33.5
1975	34	33.5
1976	19	33.5
1977	29	33.5
1978	30	33.5
1979	29	33.5
1980	20	33
1981	37	33
1982	31	33
1985	36	33
1987	46	33
1988	33	33
1989	28	33
1990	34	37.8
1991	39	37.8
1992	46	37.8
1993	27	37.8
1994	40	37.8
1995	37	37.8
1996	34	37.8
1997	39	37.8
1998	44	37.8
2009	40	40
2010	24	41
2014	48	41
2015	48	41
2016	41	41
2017	53	41
2018	53	41
2019	20	41
2020	35	18.5
2025	2	18.5

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

First to last qualifying date each year at Oregon City
Year	First date	Last date
1948	1948-06-02	1948-09-12
1949	1949-05-11	1949-09-27
1950	1950-06-03	1950-09-21
1951	1951-05-21	1951-09-21
1952	1952-05-16	1952-10-06
1953	1953-05-04	1953-09-10
1954	1954-05-17	1954-08-01
1955	1955-06-07	1955-09-06
1956	1956-04-20	1956-09-06
1957	1957-04-28	1957-09-23
1958	1958-05-15	1958-10-02
1959	1959-05-31	1959-09-10
1960	1960-06-02	1960-09-29
1961	1961-05-19	1961-10-14
1962	1962-06-23	1962-09-24
1963	1963-05-17	1963-09-27
1964	1964-05-30	1964-08-25
1965	1965-06-07	1965-09-24
1966	1966-05-04	1966-10-04
1967	1967-05-16	1967-09-28
1968	1968-06-16	1968-09-06
1969	1969-05-07	1969-09-11
1970	1970-05-15	1970-10-03
1971	1971-05-11	1971-08-29
1972	1972-05-12	1972-09-15
1973	1973-05-12	1973-09-11
1974	1974-06-10	1974-09-25
1975	1975-05-13	1975-09-30
1976	1976-06-18	1976-09-20
1977	1977-06-05	1977-08-18
1978	1978-06-02	1978-08-30
1979	1979-05-25	1979-10-03
1980	1980-07-07	1980-10-05
1981	1981-06-25	1981-09-16
1982	1982-05-24	1982-09-23
1985	1985-05-16	1985-08-28
1987	1987-04-26	1987-10-06
1988	1988-05-11	1988-10-01
1989	1989-06-01	1989-09-28
1990	1990-05-04	1990-09-22
1991	1991-06-10	1991-10-10
1992	1992-05-03	1992-09-22
1993	1993-05-17	1993-10-02
1994	1994-05-06	1994-09-27
1995	1995-05-28	1995-09-22
1996	1996-06-02	1996-10-09
1997	1997-05-11	1997-09-25
1998	1998-04-29	1998-09-15
2009	2009-05-28	2009-09-23
2010	2010-07-06	2010-09-30
2014	2014-05-01	2014-09-21
2015	2015-05-31	2015-09-13
2016	2016-04-18	2016-09-27
2017	2017-05-22	2017-09-27
2018	2018-05-13	2018-09-29
2019	2019-05-11	2019-08-29
2020	2020-05-09	2020-09-30
2025	2025-08-25	2025-08-28

Every Fixed Threshold

Fixed thresholds at Oregon City
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	58	67	1967	2
35 C (95 F): Days	55	18	1958	1
40 C (104 F): Days	9	5	1981	3
90 F (32.2 C): Days	57	37	1967	2
100 F (37.8 C): Days	30	7	1981	1
0 C (32 F): Ice days (max	35	13	1950	2
0 C (32 F): Frost days (min	59	86	1985	17
-10 C (14 F): Days with min	16	11	1950	4
20 C (68 F): Tropical nights (min	20	3	2009	1
10 mm (0.39 in): Days with 10 mm or more rain	73	60	1950	12
25 mm (0.98 in): Days with 25 mm or more rain	72	18	1996	2
50 mm (1.97 in): Days with 50 mm or more rain	42	4	1980	1
100 mm (3.94 in): Days with 100 mm or more rain	2	1	1917	1
10 cm (3.9 in): Days with 10 cm or more snowfall	9	3	1969	1
25 cm (9.8 in): Days with 25 cm or more snowfall	1	2	1993	2

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1948.

Download the Data

Data for Oregon City 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).

Oregon City Threshold Days by Year

Key Facts for Oregon City Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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