Oregon City Weather Records (USC00356334)

Record envelope, standing records and threshold days for Oregon City (USC00356334), Oregon, United States, with 115 years of record.

Key Facts for Oregon City

Oregon City (USC00356334) is a weather station in Oregon, United States at 45.36 latitude and -122.60 longitude, 51 m (167 ft) above sea level.
The station reports from 1911 to 2025, 115 years of record.
1,464 records set at Oregon City still stand.
Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
Oregon City set a daily record high maximum temperature of 37.2 C (99.0 F) on 25 August 2025.

About the Station

Location: Oregon, United States, 45.36 latitude, -122.60 longitude.
Elevation: 51 m (167 ft).
Period of record: 1911 to 2025, 115 years.
Eligible elements: tmax, tmin, prcp, snow, snwd.

Daily Record Envelope and 2026

5 days at or beyond a record

The band shows the record high and record low for each calendar day at Oregon City. The lines show the 2026 daily maximum and minimum. 5 days in 2026 matched or passed a record. Temperatures are in degrees Celsius.

Daily record high and record low at Oregon City, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	18.9 C (66.0 F)	-18.9 C (-2.0 F)	12.2 C (54.0 F)	-3.9 C (25.0 F)
Feb	23.9 C (75.0 F)	-14.4 C (6.1 F)	20.6 C (69.1 F)	-3.3 C (26.1 F)
Mar	28.3 C (82.9 F)	-5.6 C (21.9 F)	28.3 C (82.9 F)	1.1 C (34.0 F)
Apr	33.3 C (91.9 F)	-2.2 C (28.0 F)	25.6 C (78.1 F)	2.2 C (36.0 F)
May	40.0 C (104.0 F)	-0.6 C (30.9 F)	28.9 C (84.0 F)	3.9 C (39.0 F)
Jun	45.6 C (114.1 F)	2.8 C (37.0 F)	n/a	n/a
Jul	42.2 C (108.0 F)	4.4 C (39.9 F)	n/a	n/a
Aug	41.7 C (107.1 F)	0.0 C (32.0 F)	37.2 C (99.0 F)	15.6 C (60.1 F)
Sep	40.6 C (105.1 F)	0.6 C (33.1 F)	25.6 C (78.1 F)	16.1 C (61.0 F)
Oct	35.6 C (96.1 F)	-4.4 C (24.1 F)	n/a	n/a
Nov	23.9 C (75.0 F)	-12.8 C (9.0 F)	n/a	n/a
Dec	20.0 C (68.0 F)	-14.4 C (6.1 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Oregon City still stand. 1955 holds the most, with 58.

Standing records at Oregon City by the year they were set
Year set	Standing records
1948	21
1949	38
1950	39
1951	21
1952	18
1953	18
1954	24
1955	58
1956	25
1957	24
1958	20
1959	19
1960	28
1961	20
1962	26
1963	19
1964	25
1965	20
1966	18
1967	12
1968	18
1969	11
1970	30
1971	20
1972	45
1973	21
1974	18
1975	25
1976	24
1977	13
1978	13
1979	18
1980	22
1981	17
1982	15
1983	20
1984	14
1985	28
1986	12
1987	13
1988	13
1989	20
1990	27
1991	20
1992	31
1993	17
1994	13
1995	16
1996	21
1997	11
1998	15
1999	9
2000	5
2001	9
2002	10
2003	15
2004	13
2005	14
2006	8
2007	8
2008	12
2009	12
2010	11
2011	12
2012	15
2013	11
2014	23
2015	18
2016	27
2017	21
2018	8
2019	21
2020	12
2021	19
2022	15
2023	20
2024	16
2025	6

All-Time Record Progression

8 new records

8 all-time records were set at Oregon City between 9 August 1981 and 28 June 2021. Each dot is a new record.

When Oregon City set new all-time records
Date	Kind	Detail
1981-08-09	Record high minimum temperature	Record high minimum temperature 21.7 C (71.1 F)
1989-02-03	Record low maximum temperature	Record low maximum temperature -8.9 C (16.0 F)
2006-07-22	Record high minimum temperature	Record high minimum temperature 25.0 C (77.0 F)
2009-07-29	Record high maximum temperature	Record high maximum temperature 42.2 C (108.0 F)
2017-03-20	Record daily precipitation	Record daily precipitation 127.0 mm (5.0 in)
2021-06-27	Record high maximum temperature	Record high maximum temperature 43.9 C (111.0 F)
2021-06-28	Record high maximum temperature	Record high maximum temperature 45.6 C (114.1 F)
2021-06-28	Record high minimum temperature	Record high minimum temperature 26.7 C (80.1 F)

Wettest Day of Each Month

Mar: 127.0 mm (5.0 in)

The wettest day on record for each calendar month at Oregon City. The most was 127.0 mm (5.0 in) on 20 March 2017.

Record daily precipitation for each month at Oregon City
Month	Record daily precipitation (mm)	Date
Jan	93.2 mm (3.7 in)	26 January 1920
Feb	79.5 mm (3.1 in)	19 February 1968
Mar	127.0 mm (5.0 in)	20 March 2017
Apr	82.6 mm (3.3 in)	8 April 2006
May	48.3 mm (1.9 in)	17 May 1991
Jun	49.0 mm (1.9 in)	23 June 1969
Jul	26.9 mm (1.1 in)	19 July 1983
Aug	61.7 mm (2.4 in)	25 August 1956
Sep	47.2 mm (1.9 in)	30 September 1951
Oct	85.1 mm (3.4 in)	27 October 1994
Nov	85.1 mm (3.4 in)	24 November 1960
Dec	112.0 mm (4.4 in)	19 December 1917

Period of Record Coverage

1948 to 2025

78 years of record at Oregon City, 1948 to 2025. 21 years have data for under 90 percent of days and are left out of rankings: 1983, 1984, 1986, 1999, 2000, 2001, 2002, 2003 and others.

Days with data per year at Oregon City
Year	Days with data	Share of year	Complete
1948	341	93%	Yes
1949	365	100%	Yes
1950	361	99%	Yes
1951	363	99%	Yes
1952	364	99%	Yes
1953	363	99%	Yes
1954	365	100%	Yes
1955	363	99%	Yes
1956	365	100%	Yes
1957	362	99%	Yes
1958	363	99%	Yes
1959	364	100%	Yes
1960	366	100%	Yes
1961	364	100%	Yes
1962	365	100%	Yes
1963	365	100%	Yes
1964	366	100%	Yes
1965	362	99%	Yes
1966	365	100%	Yes
1967	361	99%	Yes
1968	365	100%	Yes
1969	362	99%	Yes
1970	363	99%	Yes
1971	365	100%	Yes
1972	366	100%	Yes
1973	363	99%	Yes
1974	364	100%	Yes
1975	364	100%	Yes
1976	350	96%	Yes
1977	355	97%	Yes
1978	361	99%	Yes
1979	362	99%	Yes
1980	359	98%	Yes
1981	363	99%	Yes
1982	362	99%	Yes
1983	328	90%	No
1984	291	80%	No
1985	340	93%	Yes
1986	276	76%	No
1987	350	96%	Yes
1988	348	95%	Yes
1989	340	93%	Yes
1990	345	95%	Yes
1991	354	97%	Yes
1992	352	96%	Yes
1993	355	97%	Yes
1994	351	96%	Yes
1995	351	96%	Yes
1996	348	95%	Yes
1997	337	92%	Yes
1998	337	92%	Yes
1999	291	80%	No
2000	271	74%	No
2001	278	76%	No
2002	299	82%	No
2003	280	77%	No
2004	289	79%	No
2005	298	82%	No
2006	287	79%	No
2007	278	76%	No
2008	226	62%	No
2009	354	97%	Yes
2010	350	96%	Yes
2011	319	87%	No
2012	317	87%	No
2013	269	74%	No
2014	354	97%	Yes
2015	347	95%	Yes
2016	348	95%	Yes
2017	352	96%	Yes
2018	363	99%	Yes
2019	357	98%	Yes
2020	351	96%	Yes
2021	326	89%	No
2022	257	70%	No
2023	310	85%	No
2024	311	85%	No
2025	92	25%	No

Latest Records

Latest records at Oregon City
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
25 August 2025	Oregon City, US	daily high max	37.2 C (99.0 F)	1.1 C (2.0 F)	67 years	29 of 100 (Routine)
25 August 2025	Oregon City, US	daily high min (Tie)	20.6 C (69.1 F)	tie	35 years	4 of 100 (Routine)
6 April 2025	Oregon City, US	daily high min (Tie)	11.1 C (52.0 F)	tie	63 years	6 of 100 (Routine)
26 March 2025	Oregon City, US	monthly high max	28.3 C (82.9 F)	1.1 C (2.0 F)	30 years	28 of 100 (Routine)
26 March 2025	Oregon City, US	daily high min	11.1 C (52.0 F)	2.2 C (4.0 F)	39 years	25 of 100 (Routine)
25 March 2025	Oregon City, US	daily high max	25.0 C (77.0 F)	1.1 C (2.0 F)	59 years	26 of 100 (Routine)
24 March 2025	Oregon City, US	daily high min	13.9 C (57.0 F)	5.0 C (9.0 F)	72 years	44 of 100 (Notable)
1 March 2025	Oregon City, US	daily high max (Tie)	20.0 C (68.0 F)	tie	35 years	4 of 100 (Routine)
11 February 2025	Oregon City, US	daily low min	-3.3 C (26.1 F)	1.1 C (2.0 F)	77 years	33 of 100 (Routine)
11 February 2025	Oregon City, US	daily low max (Tie)	3.9 C (39.0 F)	tie	51 years	5 of 100 (Routine)
24 September 2024	Oregon City, US	daily high min (Tie)	16.7 C (62.1 F)	tie	27 years	3 of 100 (Routine)
7 September 2024	Oregon City, US	monthly high min	20.0 C (68.0 F)	0.6 C (1.1 F)	50 years	34 of 100 (Routine)
5 September 2024	Oregon City, US	daily high max	37.2 C (99.0 F)	1.1 C (2.0 F)	69 years	29 of 100 (Routine)
4 September 2024	Oregon City, US	daily high min	18.9 C (66.0 F)	1.7 C (3.1 F)	47 years	26 of 100 (Routine)
1 September 2024	Oregon City, US	daily high min	16.7 C (62.1 F)	0.6 C (1.1 F)	3 years	9 of 100 (Routine)
10 July 2024	Oregon City, US	daily high min	18.3 C (64.9 F)	0.5 C (0.9 F)	17 years	13 of 100 (Routine)
9 July 2024	Oregon City, US	daily high max	38.9 C (102.0 F)	1.1 C (2.0 F)	72 years	30 of 100 (Routine)
8 July 2024	Oregon City, US	daily high min (Tie)	17.8 C (64.0 F)	tie	14 years	2 of 100 (Routine)
7 July 2024	Oregon City, US	daily high max	37.2 C (99.0 F)	0.5 C (0.9 F)	14 years	12 of 100 (Routine)
3 June 2024	Oregon City, US	daily rain	22.9 mm (0.9 in)	5.9 mm (0.23 in)	27 years	20 of 100 (Routine)

Climate Trend

60 complete years, 1949 to 2024

One stripe for each of 60 complete years at Oregon City, 1949 to 2024. Blue stripes are years cooler than the station's own mean of 12.5 C (54.5 F); red stripes are warmer. The coolest year was 1955, at 10.9 C (51.6 F), and the warmest was 2015, at 14.2 C (57.5 F). The strongest colour marks a difference of 1.7 C (3.1 F).

Annual mean temperature at Oregon City as warming stripes, 1949 to 2024
Year	Annual mean temperature	Difference from the station mean
1949	11.2 C	-1.28 C
1950	11.5 C	-1.05 C
1951	12.0 C	-0.57 C
1952	12.0 C	-0.48 C
1953	12.4 C	-0.10 C
1954	11.6 C	-0.90 C
1955	10.9 C	-1.65 C
1956	11.6 C	-0.93 C
1957	11.9 C	-0.64 C
1958	13.8 C	+1.27 C
1959	12.2 C	-0.33 C
1960	11.9 C	-0.61 C
1961	12.6 C	+0.11 C
1962	12.0 C	-0.56 C
1963	12.0 C	-0.52 C
1964	11.4 C	-1.10 C
1965	12.3 C	-0.23 C
1966	12.4 C	-0.09 C
1967	13.1 C	+0.54 C
1968	12.4 C	-0.10 C
1969	12.1 C	-0.39 C
1970	12.4 C	-0.11 C
1971	11.7 C	-0.86 C
1972	12.2 C	-0.35 C
1973	12.3 C	-0.27 C
1974	12.4 C	-0.14 C
1975	11.8 C	-0.70 C
1976	11.9 C	-0.59 C
1977	12.3 C	-0.18 C
1978	12.4 C	-0.15 C
1979	12.5 C	0.00 C
1980	12.1 C	-0.41 C
1981	12.8 C	+0.32 C
1982	12.0 C	-0.53 C
1985	11.3 C	-1.27 C
1987	13.3 C	+0.79 C
1988	12.7 C	+0.20 C
1989	12.6 C	+0.05 C
1990	12.9 C	+0.41 C
1991	12.8 C	+0.32 C
1992	14.1 C	+1.56 C
1993	12.5 C	-0.02 C
1994	13.1 C	+0.53 C
1995	13.7 C	+1.16 C
1996	12.7 C	+0.16 C
1997	13.4 C	+0.89 C
1998	13.5 C	+1.02 C
2002	12.8 C	+0.31 C
2009	12.6 C	+0.04 C
2010	12.8 C	+0.30 C
2012	12.8 C	+0.24 C
2014	13.5 C	+0.98 C
2015	14.2 C	+1.66 C
2016	13.8 C	+1.23 C
2017	12.8 C	+0.30 C
2018	13.5 C	+1.00 C
2019	12.2 C	-0.36 C
2020	13.1 C	+0.60 C
2021	13.4 C	+0.84 C
2024	13.4 C	+0.91 C

The annual mean temperature here has risen by 0.2 C (0.2 to 0.3) per decade over 1949 to 2024. In Fahrenheit: 0.4 F (0.3 to 0.5) per decade. The slope is a straight line fitted to 60 complete years; the brackets give its 95 percent interval.

Fitted temperature trends per decade at Oregon City
Measure	Per decade (C)	Per decade (F)	Period	Complete years	Reading
Annual mean temperature	0.2 C (0.2 to 0.3) per decade	0.4 F (0.3 to 0.5) per decade	1949 to 2024	60	Rise
Mean daily maximum	0.2 C (0.1 to 0.3) per decade	0.3 F (0.2 to 0.5) per decade	1949 to 2024	60	Rise
Mean daily minimum	0.3 C (0.2 to 0.3) per decade	0.5 F (0.3 to 0.6) per decade	1949 to 2024	60	Rise

A year is complete when all 12 months have at least 20 days of both daily maximum and daily minimum readings. The annual mean is the mean of the monthly means. The trend describes this one station over this period; it does not say what caused the change.

Extremes by Year

1911 to 2025

Yearly extremes at Oregon City: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	45.6 C (114.1 F)	2021	37.8 C (100.0 F)	78
Coldest night (TNn)	-18.9 C (-2.0 F)	1950	-7.2 C (19.0 F)	78
Wettest day (Rx1day)	127.0 mm (5.0 in)	2017	50.8 mm (2.0 in)	101
Wettest five days (Rx5day)	225.5 mm (8.9 in)	2017	108.0 mm (4.3 in)	101
Longest dry spell (CDD)	75 days	1967	33 days	101

Hottest day (TXx)

The hottest day of the year at Oregon City, 1911 to 2025. The record is 45.6 C (114.1 F) in 2021, marked on the chart; the median year is 37.8 C (100.0 F).

Hottest day (TXx) at Oregon City by year
Year	Hottest day (TXx)
1911	n/a
1912	n/a
1913	n/a
1914	n/a
1915	n/a
1916	n/a
1917	n/a
1918	n/a
1919	n/a
1920	n/a
1921	n/a
1922	n/a
1923	n/a
1924	n/a
1925	n/a
1926	n/a
1927	n/a
1928	n/a
1929	n/a
1930	n/a
1931	n/a
1932	n/a
1933	n/a
1934	n/a
1943	n/a
1948	34.4 C (93.9 F)
1949	34.4 C (93.9 F)
1950	35.6 C (96.1 F)
1951	37.2 C (99.0 F)
1952	38.9 C (102.0 F)
1953	37.2 C (99.0 F)
1954	31.1 C (88.0 F)
1955	38.3 C (100.9 F)
1956	41.7 C (107.1 F)
1957	36.1 C (97.0 F)
1958	41.1 C (106.0 F)
1959	36.7 C (98.1 F)
1960	39.4 C (102.9 F)
1961	40.6 C (105.1 F)
1962	35.6 C (96.1 F)
1963	35.6 C (96.1 F)
1964	35.0 C (95.0 F)
1965	38.9 C (102.0 F)
1966	35.6 C (96.1 F)
1967	39.4 C (102.9 F)
1968	35.6 C (96.1 F)
1969	36.7 C (98.1 F)
1970	36.7 C (98.1 F)
1971	38.3 C (100.9 F)
1972	39.4 C (102.9 F)
1973	36.1 C (97.0 F)
1974	36.1 C (97.0 F)
1975	35.0 C (95.0 F)
1976	36.1 C (97.0 F)
1977	41.1 C (106.0 F)
1978	39.4 C (102.9 F)
1979	40.0 C (104.0 F)
1980	39.4 C (102.9 F)
1981	41.7 C (107.1 F)
1982	37.8 C (100.0 F)
1983	40.0 C (104.0 F)
1984	35.0 C (95.0 F)
1985	38.9 C (102.0 F)
1986	35.6 C (96.1 F)
1987	38.3 C (100.9 F)
1988	40.6 C (105.1 F)
1989	36.1 C (97.0 F)
1990	37.8 C (100.0 F)
1991	37.2 C (99.0 F)
1992	39.4 C (102.9 F)
1993	38.3 C (100.9 F)
1994	40.0 C (104.0 F)
1995	38.9 C (102.0 F)
1996	38.3 C (100.9 F)
1997	35.0 C (95.0 F)
1998	39.4 C (102.9 F)
1999	36.7 C (98.1 F)
2000	37.8 C (100.0 F)
2001	37.2 C (99.0 F)
2002	39.4 C (102.9 F)
2003	38.3 C (100.9 F)
2004	40.0 C (104.0 F)
2005	36.7 C (98.1 F)
2006	40.6 C (105.1 F)
2007	40.0 C (104.0 F)
2008	40.0 C (104.0 F)
2009	42.2 C (108.0 F)
2010	37.2 C (99.0 F)
2011	35.6 C (96.1 F)
2012	38.9 C (102.0 F)
2013	36.1 C (97.0 F)
2014	37.2 C (99.0 F)
2015	38.9 C (102.0 F)
2016	37.2 C (99.0 F)
2017	38.9 C (102.0 F)
2018	36.7 C (98.1 F)
2019	35.6 C (96.1 F)
2020	37.8 C (100.0 F)
2021	45.6 C (114.1 F)
2022	37.8 C (100.0 F)
2023	40.6 C (105.1 F)
2024	38.9 C (102.0 F)
2025	37.2 C (99.0 F)

Coldest night (TNn)

The coldest night of the year at Oregon City, 1911 to 2025. The record is -18.9 C (-2.0 F) in 1950, marked on the chart; the median year is -7.2 C (19.0 F).

Coldest night (TNn) at Oregon City by year
Year	Coldest night (TNn)
1911	n/a
1912	n/a
1913	n/a
1914	n/a
1915	n/a
1916	n/a
1917	n/a
1918	n/a
1919	n/a
1920	n/a
1921	n/a
1922	n/a
1923	n/a
1924	n/a
1925	n/a
1926	n/a
1927	n/a
1928	n/a
1929	n/a
1930	n/a
1931	n/a
1932	n/a
1933	n/a
1934	n/a
1943	n/a
1948	-7.2 C (19.0 F)
1949	-9.4 C (15.1 F)
1950	-18.9 C (-2.0 F)
1951	-7.8 C (18.0 F)
1952	-7.2 C (19.0 F)
1953	-2.8 C (27.0 F)
1954	-7.8 C (18.0 F)
1955	-12.8 C (9.0 F)
1956	-8.3 C (17.1 F)
1957	-12.8 C (9.0 F)
1958	-4.4 C (24.1 F)
1959	-8.3 C (17.1 F)
1960	-5.6 C (21.9 F)
1961	-8.9 C (16.0 F)
1962	-10.6 C (12.9 F)
1963	-11.1 C (12.0 F)
1964	-14.4 C (6.1 F)
1965	-6.7 C (19.9 F)
1966	-4.4 C (24.1 F)
1967	-5.6 C (21.9 F)
1968	-13.9 C (7.0 F)
1969	-8.9 C (16.0 F)
1970	-3.3 C (26.1 F)
1971	-5.6 C (21.9 F)
1972	-13.9 C (7.0 F)
1973	-7.2 C (19.0 F)
1974	-11.1 C (12.0 F)
1975	-5.6 C (21.9 F)
1976	-5.0 C (23.0 F)
1977	-8.3 C (17.1 F)
1978	-10.6 C (12.9 F)
1979	-11.1 C (12.0 F)
1980	-9.4 C (15.1 F)
1981	-2.2 C (28.0 F)
1982	-8.9 C (16.0 F)
1983	-11.7 C (10.9 F)
1984	-8.9 C (16.0 F)
1985	-9.4 C (15.1 F)
1986	-2.8 C (27.0 F)
1987	-5.0 C (23.0 F)
1988	-5.6 C (21.9 F)
1989	-12.2 C (10.0 F)
1990	-14.4 C (6.1 F)
1991	-6.1 C (21.0 F)
1992	-3.9 C (25.0 F)
1993	-6.7 C (19.9 F)
1994	-4.4 C (24.1 F)
1995	-5.6 C (21.9 F)
1996	-8.9 C (16.0 F)
1997	-5.6 C (21.9 F)
1998	-10.0 C (14.0 F)
1999	-3.3 C (26.1 F)
2000	-3.9 C (25.0 F)
2001	-3.3 C (26.1 F)
2002	-2.8 C (27.0 F)
2003	-3.9 C (25.0 F)
2004	-8.3 C (17.1 F)
2005	-5.6 C (21.9 F)
2006	-4.4 C (24.1 F)
2007	-7.8 C (18.0 F)
2008	-7.8 C (18.0 F)
2009	-11.7 C (10.9 F)
2010	-8.3 C (17.1 F)
2011	-7.8 C (18.0 F)
2012	-2.8 C (27.0 F)
2013	-10.6 C (12.9 F)
2014	-7.8 C (18.0 F)
2015	-4.4 C (24.1 F)
2016	-3.9 C (25.0 F)
2017	-9.4 C (15.1 F)
2018	-5.6 C (21.9 F)
2019	-3.9 C (25.0 F)
2020	-3.3 C (26.1 F)
2021	-3.9 C (25.0 F)
2022	-7.2 C (19.0 F)
2023	-6.1 C (21.0 F)
2024	-4.4 C (24.1 F)
2025	-3.9 C (25.0 F)

Wettest day (Rx1day)

The wettest day of the year at Oregon City, 1911 to 2025. The record is 127.0 mm (5.0 in) in 2017, marked on the chart; the median year is 50.8 mm (2.0 in).

Wettest day (Rx1day) at Oregon City by year
Year	Wettest day (Rx1day)
1911	19.6 mm (0.8 in)
1912	46.5 mm (1.8 in)
1913	50.8 mm (2.0 in)
1914	52.3 mm (2.1 in)
1915	52.3 mm (2.1 in)
1916	49.8 mm (2.0 in)
1917	112.0 mm (4.4 in)
1918	46.7 mm (1.8 in)
1919	57.2 mm (2.3 in)
1920	93.2 mm (3.7 in)
1921	78.7 mm (3.1 in)
1922	45.7 mm (1.8 in)
1923	43.2 mm (1.7 in)
1924	35.6 mm (1.4 in)
1925	52.3 mm (2.1 in)
1926	41.9 mm (1.6 in)
1927	72.6 mm (2.9 in)
1928	53.6 mm (2.1 in)
1929	53.6 mm (2.1 in)
1930	38.9 mm (1.5 in)
1931	56.1 mm (2.2 in)
1932	52.3 mm (2.1 in)
1933	67.8 mm (2.7 in)
1934	n/a
1943	n/a
1948	41.4 mm (1.6 in)
1949	72.1 mm (2.8 in)
1950	52.1 mm (2.1 in)
1951	47.2 mm (1.9 in)
1952	24.6 mm (1.0 in)
1953	51.6 mm (2.0 in)
1954	46.7 mm (1.8 in)
1955	61.0 mm (2.4 in)
1956	61.7 mm (2.4 in)
1957	66.3 mm (2.6 in)
1958	43.7 mm (1.7 in)
1959	48.0 mm (1.9 in)
1960	85.1 mm (3.4 in)
1961	57.9 mm (2.3 in)
1962	74.9 mm (2.9 in)
1963	53.1 mm (2.1 in)
1964	81.8 mm (3.2 in)
1965	55.9 mm (2.2 in)
1966	47.8 mm (1.9 in)
1967	31.0 mm (1.2 in)
1968	79.5 mm (3.1 in)
1969	55.9 mm (2.2 in)
1970	54.9 mm (2.2 in)
1971	47.8 mm (1.9 in)
1972	55.9 mm (2.2 in)
1973	57.9 mm (2.3 in)
1974	72.6 mm (2.9 in)
1975	58.9 mm (2.3 in)
1976	44.5 mm (1.8 in)
1977	64.0 mm (2.5 in)
1978	42.4 mm (1.7 in)
1979	42.2 mm (1.7 in)
1980	63.0 mm (2.5 in)
1981	50.8 mm (2.0 in)
1982	58.4 mm (2.3 in)
1983	50.3 mm (2.0 in)
1984	62.7 mm (2.5 in)
1985	32.0 mm (1.3 in)
1986	38.4 mm (1.5 in)
1987	38.6 mm (1.5 in)
1988	48.8 mm (1.9 in)
1989	50.3 mm (2.0 in)
1990	39.6 mm (1.6 in)
1991	48.3 mm (1.9 in)
1992	39.9 mm (1.6 in)
1993	30.7 mm (1.2 in)
1994	85.1 mm (3.4 in)
1995	61.0 mm (2.4 in)
1996	83.8 mm (3.3 in)
1997	34.8 mm (1.4 in)
1998	42.9 mm (1.7 in)
1999	38.6 mm (1.5 in)
2000	24.1 mm (0.9 in)
2001	43.9 mm (1.7 in)
2002	43.4 mm (1.7 in)
2003	61.5 mm (2.4 in)
2004	38.1 mm (1.5 in)
2005	50.8 mm (2.0 in)
2006	82.6 mm (3.3 in)
2007	48.5 mm (1.9 in)
2008	45.2 mm (1.8 in)
2009	63.5 mm (2.5 in)
2010	50.8 mm (2.0 in)
2011	50.8 mm (2.0 in)
2012	58.2 mm (2.3 in)
2013	43.9 mm (1.7 in)
2014	38.1 mm (1.5 in)
2015	57.2 mm (2.3 in)
2016	49.3 mm (1.9 in)
2017	127.0 mm (5.0 in)
2018	44.5 mm (1.8 in)
2019	39.4 mm (1.6 in)
2020	50.8 mm (2.0 in)
2021	50.8 mm (2.0 in)
2022	52.3 mm (2.1 in)
2023	40.6 mm (1.6 in)
2024	45.2 mm (1.8 in)
2025	26.7 mm (1.1 in)

Wettest five days (Rx5day)

The wettest five days of the year at Oregon City, 1911 to 2025. The record is 225.5 mm (8.9 in) in 2017, marked on the chart; the median year is 108.0 mm (4.3 in).

Wettest five days (Rx5day) at Oregon City by year
Year	Wettest five days (Rx5day)
1911	39.7 mm (1.6 in)
1912	106.2 mm (4.2 in)
1913	97.9 mm (3.9 in)
1914	131.9 mm (5.2 in)
1915	125.0 mm (4.9 in)
1916	137.5 mm (5.4 in)
1917	203.8 mm (8.0 in)
1918	90.9 mm (3.6 in)
1919	158.7 mm (6.2 in)
1920	132.3 mm (5.2 in)
1921	207.2 mm (8.2 in)
1922	78.0 mm (3.1 in)
1923	129.8 mm (5.1 in)
1924	112.7 mm (4.4 in)
1925	92.1 mm (3.6 in)
1926	88.9 mm (3.5 in)
1927	105.4 mm (4.1 in)
1928	136.5 mm (5.4 in)
1929	145.0 mm (5.7 in)
1930	66.4 mm (2.6 in)
1931	126.8 mm (5.0 in)
1932	105.5 mm (4.2 in)
1933	94.2 mm (3.7 in)
1934	n/a
1943	n/a
1948	99.4 mm (3.9 in)
1949	146.6 mm (5.8 in)
1950	168.0 mm (6.6 in)
1951	121.6 mm (4.8 in)
1952	90.9 mm (3.6 in)
1953	162.0 mm (6.4 in)
1954	79.5 mm (3.1 in)
1955	109.6 mm (4.3 in)
1956	140.7 mm (5.5 in)
1957	132.6 mm (5.2 in)
1958	83.1 mm (3.3 in)
1959	102.9 mm (4.1 in)
1960	176.5 mm (6.9 in)
1961	120.9 mm (4.8 in)
1962	86.9 mm (3.4 in)
1963	100.4 mm (4.0 in)
1964	205.2 mm (8.1 in)
1965	132.5 mm (5.2 in)
1966	154.0 mm (6.1 in)
1967	90.6 mm (3.6 in)
1968	146.6 mm (5.8 in)
1969	104.9 mm (4.1 in)
1970	127.6 mm (5.0 in)
1971	99.8 mm (3.9 in)
1972	122.0 mm (4.8 in)
1973	137.9 mm (5.4 in)
1974	161.6 mm (6.4 in)
1975	101.6 mm (4.0 in)
1976	131.6 mm (5.2 in)
1977	157.2 mm (6.2 in)
1978	95.5 mm (3.8 in)
1979	89.7 mm (3.5 in)
1980	147.6 mm (5.8 in)
1981	108.0 mm (4.3 in)
1982	123.6 mm (4.9 in)
1983	103.2 mm (4.1 in)
1984	98.6 mm (3.9 in)
1985	71.3 mm (2.8 in)
1986	97.1 mm (3.8 in)
1987	111.0 mm (4.4 in)
1988	102.6 mm (4.0 in)
1989	74.9 mm (2.9 in)
1990	107.2 mm (4.2 in)
1991	78.5 mm (3.1 in)
1992	95.3 mm (3.8 in)
1993	83.1 mm (3.3 in)
1994	143.0 mm (5.6 in)
1995	115.5 mm (4.5 in)
1996	210.6 mm (8.3 in)
1997	124.0 mm (4.9 in)
1998	117.1 mm (4.6 in)
1999	85.5 mm (3.4 in)
2000	69.1 mm (2.7 in)
2001	114.5 mm (4.5 in)
2002	92.4 mm (3.6 in)
2003	121.9 mm (4.8 in)
2004	74.0 mm (2.9 in)
2005	129.0 mm (5.1 in)
2006	118.9 mm (4.7 in)
2007	100.9 mm (4.0 in)
2008	80.9 mm (3.2 in)
2009	126.5 mm (5.0 in)
2010	114.5 mm (4.5 in)
2011	129.3 mm (5.1 in)
2012	140.3 mm (5.5 in)
2013	91.4 mm (3.6 in)
2014	87.2 mm (3.4 in)
2015	144.8 mm (5.7 in)
2016	117.9 mm (4.6 in)
2017	225.5 mm (8.9 in)
2018	84.3 mm (3.3 in)
2019	79.6 mm (3.1 in)
2020	90.4 mm (3.6 in)
2021	96.9 mm (3.8 in)
2022	102.9 mm (4.1 in)
2023	105.1 mm (4.1 in)
2024	95.5 mm (3.8 in)
2025	52.1 mm (2.1 in)

Longest dry spell (CDD)

The longest dry spell of the year at Oregon City, 1911 to 2025. The record is 75 days in 1967, marked on the chart; the median year is 33 days.

Longest dry spell (CDD) at Oregon City by year
Year	Longest dry spell (CDD)
1911	4 days
1912	23 days
1913	30 days
1914	55 days
1915	43 days
1916	31 days
1917	68 days
1918	50 days
1919	64 days
1920	36 days
1921	47 days
1922	61 days
1923	16 days
1924	10 days
1925	27 days
1926	13 days
1927	10 days
1928	14 days
1929	19 days
1930	12 days
1931	15 days
1932	11 days
1933	7 days
1934	n/a
1943	n/a
1948	19 days
1949	28 days
1950	31 days
1951	52 days
1952	55 days
1953	30 days
1954	25 days
1955	48 days
1956	42 days
1957	48 days
1958	70 days
1959	38 days
1960	56 days
1961	40 days
1962	28 days
1963	28 days
1964	20 days
1965	38 days
1966	33 days
1967	75 days
1968	25 days
1969	39 days
1970	35 days
1971	41 days
1972	36 days
1973	24 days
1974	32 days
1975	33 days
1976	26 days
1977	33 days
1978	26 days
1979	38 days
1980	53 days
1981	49 days
1982	25 days
1983	22 days
1984	63 days
1985	43 days
1986	35 days
1987	34 days
1988	33 days
1989	33 days
1990	42 days
1991	32 days
1992	33 days
1993	43 days
1994	59 days
1995	27 days
1996	42 days
1997	40 days
1998	49 days
1999	32 days
2000	43 days
2001	31 days
2002	42 days
2003	38 days
2004	19 days
2005	32 days
2006	47 days
2007	42 days
2008	19 days
2009	22 days
2010	59 days
2011	21 days
2012	16 days
2013	15 days
2014	37 days
2015	40 days
2016	24 days
2017	57 days
2018	66 days
2019	23 days
2020	32 days
2021	67 days
2022	29 days
2023	66 days
2024	13 days
2025	6 days

Each chart shows one value per year; the dot marks the record year. TXx is the hottest daily maximum, TNn the coldest daily minimum, Rx1day and Rx5day the largest one-day and five-day rain totals, and CDD the longest run of days with less than 1 mm of rain. A year with missing days can understate an extreme.

Frost Dates and Growing Season

60 years with a frost

Across 60 years with a frost, the median last spring frost at Oregon City falls on 2 April and the median first autumn frost on 10 November, which leaves a median of 224 days between them.

In 1979 to 2024 the median growing season was 247 days. That is 41 days more than in 1949 to 1978.

Fitted over all years, the growing season changes by +7.8 days per decade at this station.

Frost dates and growing season at Oregon City
Measure	Median, all years	Earliest period (1949 to 1978)	Recent period (1979 to 2024)	Recent against earliest	Fitted trend
Last spring frost	2 April	12 April	18 March	25 days earlier	-5.8 days per decade
First autumn frost	10 November	5 November	16 November	11 days later	+2.0 days per decade
Growing days	224 days	206 days	247 days	41 days more	+7.8 days per decade

A frost day is a day with a daily minimum at or below 0 C (32 F). The last spring frost and the first autumn frost are the last and first such days of the cold season, and growing days are the days between them. A negative trend for the last spring frost means it comes earlier.

Rainfall Return Levels

72 years, 1912 to 2021

A day with at least 51.4 mm (2.0 in) of rain is expected about once in 2 years. A day with at least 118.9 mm (4.7 in) of rain is expected about once in 100 years.

Rainfall return levels at Oregon City: the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	51.4 mm (2.0 in)
5 years	66.1 mm (2.6 in)
10 years	77.0 mm (3.0 in)
25 years	92.4 mm (3.6 in)
50 years	105.1 mm (4.1 in)
100 years	118.9 mm (4.7 in)	Longer than the 72 years of record

The levels come from a generalised extreme value (GEV) distribution fitted by L-moments to the wettest-day total of each year, 72 years of values from 1912 to 2021.

A return level is an estimate. It is least reliable for the long periods, 50 and 100 years, and for any period longer than the record behind the fit, where the fit has to reach past the largest day actually observed. It is not a forecast.

The largest wettest-day totals in the fit: 127.0 mm (5.0 in) in 2017; 112.0 mm (4.4 in) in 1917; 93.2 mm (3.7 in) in 1920.

Station Changes

2 suspected

2 changes were suspected in the annual mean temperature of Oregon City, at 1992 and 2009. Each is measured against neighbouring stations.

Relative to 5 neighbouring stations, the station's annual mean temperature from 1992 ran 0.2 C (0.4 F) higher than in the years before (likely change).
Relative to 5 neighbouring stations, the station's annual mean temperature from 2009 ran 0.4 C (0.6 F) lower than in the years before (possible change).

Suspected changes in the annual mean temperature at Oregon City, against neighbouring stations
Year	Shift (C)	Shift (F)	Strength	Neighbours
1992	+0.2	+0.4	likely	5
2009	-0.3	-0.6	possible	5

Possible change at the station (a move, a new instrument or a new site); the record is kept as measured. A "likely" change has a larger test statistic than a "possible" one. Neither says why the station differs from its neighbours. How changes are found, and the largest ones.

Climate Twins

1997 to 2024 against 1961 to 1990

Over 1997 to 2024, Oregon City had a mean temperature of 13.2 C (55.7 F) and 1,099.1 mm (43.3 in) of rain a year. The 3 stations whose 1961 to 1990 climate was closest to that are Covelo (United States, 618 km away), Mont-de-Marsan (France, 8,614 km away) and Angwin Pacific Union College (United States, 754 km away).

Climate twins of Oregon City: stations whose 1961 to 1990 climate is closest to its 1997 to 2024 climate
Twin station	Country	Distance away	Mean temperature, 1961-1990	Rain a year, 1961-1990	Climate difference
Covelo	United States	618 km (384 mi)	12.9 C (55.2 F)	1,024.2 mm (40.3 in)	0.68
Mont-de-Marsan	France	8,614 km (5,352 mi)	12.9 C (55.2 F)	947.9 mm (37.3 in)	0.91
Angwin Pacific Union College	United States	754 km (469 mi)	13.7 C (56.6 F)	1,097.0 mm (43.2 in)	0.93

Twins are stations, not cities. A twin is one of the three stations at least 100 km away whose earlier climate is closest to this station's recent one, so a close match does not mean the two places look alike in other ways. A station move or a gap in a record can change that station's averages. The list describes past climate; it is not a forecast and does not say what caused any change. How twins are found, and a search for any station.

Download the Data

Data for Oregon City standing records by year: CSV or JSON. Field meanings are on the data page.
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 2026-10-14 (14 October 2026). Records are computed by this site and are not official.

Data as of 2025-12-31. Last revised 31 December 2025 (2025-12-31).