Cascade Locks Weather Records (USC00351407)

Record envelope, standing records and threshold days for Cascade Locks (USC00351407), Oregon, United States, with 133 years of record.

Key Facts for Cascade Locks

Cascade Locks (USC00351407) is a weather station in Oregon, United States at 45.68 latitude and -121.87 longitude, 43 m (142 ft) above sea level.
The station reports from 1894 to 2026, 133 years of record.
1,464 records set at Cascade Locks still stand.
Records are tracked for tmax, tmin, prcp, snow: an element needs 30 years of data to be eligible.
Cascade Locks tied a daily record high minimum temperature of 18.9 C (66.0 F) on 23 July 2026.

About the Station

Location: Oregon, United States, 45.68 latitude, -121.87 longitude.
Elevation: 43 m (142 ft).
Period of record: 1894 to 2026, 133 years.
Eligible elements: tmax, tmin, prcp, snow.

Daily Record Envelope and 2026

6 days at or beyond a record

The band shows the record high and record low for each calendar day at Cascade Locks. The lines show the 2026 daily maximum and minimum. 6 days in 2026 matched or passed a record. Temperatures are in degrees Celsius.

Daily record high and record low at Cascade Locks, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	17.2 C (63.0 F)	-19.4 C (-2.9 F)	12.2 C (54.0 F)	-3.3 C (26.1 F)
Feb	20.0 C (68.0 F)	-18.9 C (-2.0 F)	13.9 C (57.0 F)	-1.1 C (30.0 F)
Mar	28.9 C (84.0 F)	-10.6 C (12.9 F)	22.8 C (73.0 F)	-1.7 C (28.9 F)
Apr	32.2 C (90.0 F)	-2.8 C (27.0 F)	26.1 C (79.0 F)	1.7 C (35.1 F)
May	35.0 C (95.0 F)	-3.3 C (26.1 F)	32.2 C (90.0 F)	6.7 C (44.1 F)
Jun	42.8 C (109.0 F)	2.2 C (36.0 F)	34.4 C (93.9 F)	6.1 C (43.0 F)
Jul	42.2 C (108.0 F)	4.4 C (39.9 F)	36.1 C (97.0 F)	9.4 C (48.9 F)
Aug	41.7 C (107.1 F)	5.0 C (41.0 F)	35.0 C (95.0 F)	9.4 C (48.9 F)
Sep	36.1 C (97.0 F)	-1.1 C (30.0 F)	31.1 C (88.0 F)	8.9 C (48.0 F)
Oct	31.1 C (88.0 F)	-4.4 C (24.1 F)	n/a	n/a
Nov	21.7 C (71.1 F)	-12.2 C (10.0 F)	n/a	n/a
Dec	18.9 C (66.0 F)	-16.7 C (1.9 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Cascade Locks still stand. 1899 holds the most, with 45.

Standing records at Cascade Locks by the year they were set
Year set	Standing records
1894	11
1895	20
1896	27
1897	27
1898	18
1899	45
1900	21
1901	41
1902	23
1903	8
1904	19
1905	25
1906	35
1907	20
1908	17
1909	38
1910	15
1911	25
1912	15
1913	16
1914	13
1915	9
1916	28
1917	26
1918	26
1919	27
1920	22
1921	21
1922	15
1923	17
1924	40
1925	19
1926	24
1927	18
1928	17
1929	20
1930	21
1931	24
1932	15
1933	22
1934	33
1935	31
1936	26
1937	12
1938	14
1939	15
1940	11
1941	16
1942	7
1943	11
1944	13
1945	12
1946	7
1947	15
1948	7
1949	19
1950	22
1951	10
1952	23
1953	25
1954	10
2013	4
2014	15
2015	26
2016	19
2017	11
2018	16
2019	23
2020	9
2021	27
2022	25
2023	21
2024	10
2025	22
2026	7

All-Time Record Progression

5 new records

5 all-time records were set at Cascade Locks between 10 July 1926 and 29 June 2021. Each dot is a new record.

When Cascade Locks set new all-time records
Date	Kind	Detail
1926-07-10	Record high maximum temperature	Record high maximum temperature 41.7 C (107.1 F)
1941-07-15	Record high maximum temperature	Record high maximum temperature 42.2 C (108.0 F)
1950-01-30	Record low minimum temperature	Record low minimum temperature -19.4 C (-2.9 F)
1950-02-03	Record low maximum temperature	Record low maximum temperature -15.0 C (5.0 F)
2021-06-29	Record high maximum temperature	Record high maximum temperature 42.8 C (109.0 F)

Wettest Day of Each Month

Jan: 141.2 mm (5.6 in)

The wettest day on record for each calendar month at Cascade Locks. The most was 141.2 mm (5.6 in) on 6 January 1923.

Record daily precipitation for each month at Cascade Locks
Month	Record daily precipitation (mm)	Date
Jan	141.2 mm (5.6 in)	6 January 1923
Feb	79.5 mm (3.1 in)	15 February 1901
Mar	114.8 mm (4.5 in)	16 March 1921
Apr	71.4 mm (2.8 in)	13 April 1937
May	69.3 mm (2.7 in)	1 May 1949
Jun	73.2 mm (2.9 in)	8 June 1933
Jul	35.6 mm (1.4 in)	1 July 1916
Aug	66.0 mm (2.6 in)	31 August 1912
Sep	66.0 mm (2.6 in)	27 September 1940
Oct	118.4 mm (4.7 in)	22 October 2017
Nov	131.3 mm (5.2 in)	5 November 2022
Dec	130.3 mm (5.1 in)	19 December 2025

Period of Record Coverage

1894 to 2026

75 years of record at Cascade Locks, 1894 to 2026. 7 years have data for under 90 percent of days and are left out of rankings: 1894, 1897, 1904, 1908, 1954, 2013, 2026.

Days with data per year at Cascade Locks
Year	Days with data	Share of year	Complete
1894	118	32%	No
1895	359	98%	Yes
1896	358	98%	Yes
1897	325	89%	No
1898	363	99%	Yes
1899	361	99%	Yes
1900	358	98%	Yes
1901	351	96%	Yes
1902	364	100%	Yes
1903	365	100%	Yes
1904	328	90%	No
1905	346	95%	Yes
1906	359	98%	Yes
1907	337	92%	Yes
1908	322	88%	No
1909	365	100%	Yes
1910	365	100%	Yes
1911	362	99%	Yes
1912	355	97%	Yes
1913	363	99%	Yes
1914	364	100%	Yes
1915	361	99%	Yes
1916	366	100%	Yes
1917	364	100%	Yes
1918	364	100%	Yes
1919	364	100%	Yes
1920	365	100%	Yes
1921	365	100%	Yes
1922	365	100%	Yes
1923	365	100%	Yes
1924	366	100%	Yes
1925	365	100%	Yes
1926	361	99%	Yes
1927	365	100%	Yes
1928	366	100%	Yes
1929	362	99%	Yes
1930	363	99%	Yes
1931	363	99%	Yes
1932	362	99%	Yes
1933	365	100%	Yes
1934	364	100%	Yes
1935	364	100%	Yes
1936	366	100%	Yes
1937	362	99%	Yes
1938	365	100%	Yes
1939	357	98%	Yes
1940	365	100%	Yes
1941	363	99%	Yes
1942	365	100%	Yes
1943	365	100%	Yes
1944	366	100%	Yes
1945	365	100%	Yes
1946	365	100%	Yes
1947	364	100%	Yes
1948	365	100%	Yes
1949	352	96%	Yes
1950	365	100%	Yes
1951	365	100%	Yes
1952	366	100%	Yes
1953	365	100%	Yes
1954	160	44%	No
2013	92	25%	No
2014	363	99%	Yes
2015	364	100%	Yes
2016	366	100%	Yes
2017	365	100%	Yes
2018	365	100%	Yes
2019	365	100%	Yes
2020	366	100%	Yes
2021	363	99%	Yes
2022	365	100%	Yes
2023	363	99%	Yes
2024	362	99%	Yes
2025	363	99%	Yes
2026	252	69%	No

Latest Records

Latest records at Cascade Locks
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
23 July 2026	Cascade Locks, US	daily high min (Tie)	18.9 C (66.0 F)	tie	112 years	10 of 100 (Routine)
16 June 2026	Cascade Locks, US	daily high max	34.4 C (93.9 F)	2.7 C (4.9 F)	109 years	45 of 100 (Notable)
16 June 2026	Cascade Locks, US	daily high min (Tie)	14.4 C (57.9 F)	tie	112 years	10 of 100 (Routine)
14 June 2026	Cascade Locks, US	daily high max	32.8 C (91.0 F)	2.2 C (4.0 F)	109 years	44 of 100 (Notable)
3 June 2026	Cascade Locks, US	daily high min (Tie)	15.6 C (60.1 F)	tie	4 years	2 of 100 (Routine)
17 May 2026	Cascade Locks, US	daily low max (Tie)	12.2 C (54.0 F)	tie	115 years	10 of 100 (Routine)
4 May 2026	Cascade Locks, US	daily high max	32.2 C (90.0 F)	2.8 C (5.0 F)	100 years	45 of 100 (Notable)
1 May 2026	Cascade Locks, US	daily high max	27.8 C (82.0 F)	0.6 C (1.1 F)	101 years	41 of 100 (Notable)
20 April 2026	Cascade Locks, US	daily high min	12.2 C (54.0 F)	2.8 C (5.0 F)	120 years	49 of 100 (Notable)
16 April 2026	Cascade Locks, US	daily low max (Tie)	10.0 C (50.0 F)	tie	99 years	9 of 100 (Routine)
7 April 2026	Cascade Locks, US	daily high max	25.6 C (78.1 F)	1.7 C (3.1 F)	92 years	40 of 100 (Notable)
20 March 2026	Cascade Locks, US	daily high max (Tie)	22.2 C (72.0 F)	tie	1 year	2 of 100 (Routine)
14 March 2026	Cascade Locks, US	daily rain	37.8 mm (1.5 in)	3.5 mm (0.14 in)	117 years	42 of 100 (Notable)
12 March 2026	Cascade Locks, US	daily rain	79.0 mm (3.1 in)	17.8 mm (0.7 in)	80 years	48 of 100 (Notable)
8 March 2026	Cascade Locks, US	daily high min	10.6 C (51.1 F)	2.3 C (4.1 F)	120 years	47 of 100 (Notable)
19 December 2025	Cascade Locks, US	monthly rain	130.3 mm (5.1 in)	3.0 mm (0.12 in)	92 years	48 of 100 (Notable)
17 December 2025	Cascade Locks, US	daily high max (Tie)	15.0 C (59.0 F)	tie	108 years	10 of 100 (Routine)
16 December 2025	Cascade Locks, US	daily high max	15.6 C (60.1 F)	1.2 C (2.2 F)	108 years	42 of 100 (Notable)
13 December 2025	Cascade Locks, US	daily high max	16.1 C (61.0 F)	0.5 C (0.9 F)	107 years	41 of 100 (Notable)
12 December 2025	Cascade Locks, US	daily high min	12.2 C (54.0 F)	3.3 C (5.9 F)	100 years	49 of 100 (Notable)

Climate Trend

67 complete years, 1895 to 2025

One stripe for each of 67 complete years at Cascade Locks, 1895 to 2025. Blue stripes are years cooler than the station's own mean of 11.4 C (52.5 F); red stripes are warmer. The coolest year was 1916, at 9.6 C (49.2 F), and the warmest was 1934, at 13.4 C (56.1 F). The strongest colour marks a difference of 2.1 C (3.8 F).

Annual mean temperature at Cascade Locks as warming stripes, 1895 to 2025
Year	Annual mean temperature	Difference from the station mean
1895	11.3 C	-0.15 C
1896	11.4 C	+0.01 C
1898	11.2 C	-0.21 C
1899	10.7 C	-0.69 C
1900	12.1 C	+0.68 C
1901	12.9 C	+1.53 C
1902	10.8 C	-0.64 C
1903	10.9 C	-0.54 C
1906	12.0 C	+0.62 C
1907	11.0 C	-0.36 C
1908	10.8 C	-0.62 C
1909	9.9 C	-1.46 C
1910	10.9 C	-0.46 C
1911	10.5 C	-0.94 C
1912	10.7 C	-0.73 C
1913	10.5 C	-0.92 C
1914	11.2 C	-0.23 C
1915	11.3 C	-0.06 C
1916	9.6 C	-1.83 C
1917	11.5 C	+0.10 C
1918	12.0 C	+0.63 C
1919	10.8 C	-0.57 C
1920	10.9 C	-0.47 C
1921	10.9 C	-0.53 C
1922	10.2 C	-1.18 C
1923	11.5 C	+0.10 C
1924	11.0 C	-0.39 C
1925	12.2 C	+0.81 C
1926	12.6 C	+1.19 C
1927	11.2 C	-0.21 C
1928	11.1 C	-0.27 C
1929	10.6 C	-0.78 C
1930	10.9 C	-0.51 C
1931	11.5 C	+0.11 C
1932	11.4 C	-0.03 C
1933	11.1 C	-0.27 C
1934	13.4 C	+2.01 C
1935	11.3 C	-0.11 C
1936	11.6 C	+0.22 C
1937	11.2 C	-0.20 C
1938	12.0 C	+0.55 C
1939	12.5 C	+1.08 C
1940	12.5 C	+1.11 C
1941	12.3 C	+0.93 C
1942	11.4 C	+0.00 C
1943	11.0 C	-0.43 C
1944	11.5 C	+0.09 C
1945	11.4 C	+0.00 C
1946	11.3 C	-0.14 C
1947	11.9 C	+0.52 C
1948	10.6 C	-0.77 C
1950	10.3 C	-1.14 C
1951	11.2 C	-0.23 C
1952	11.1 C	-0.35 C
1953	11.8 C	+0.40 C
2014	12.2 C	+0.81 C
2015	13.0 C	+1.57 C
2016	12.1 C	+0.70 C
2017	11.0 C	-0.40 C
2018	12.0 C	+0.64 C
2019	11.0 C	-0.41 C
2020	11.7 C	+0.33 C
2021	12.1 C	+0.69 C
2022	11.2 C	-0.25 C
2023	11.9 C	+0.52 C
2024	11.7 C	+0.30 C
2025	12.5 C	+1.09 C

The annual mean temperature here has risen by 0.06 C (0.02 to 0.11) per decade over 1895 to 2025. In Fahrenheit: 0.11 F (0.03 to 0.19) per decade. The slope is a straight line fitted to 67 complete years; the brackets give its 95 percent interval.

Fitted temperature trends per decade at Cascade Locks
Measure	Per decade (C)	Per decade (F)	Period	Complete years	Reading
Annual mean temperature	0.06 C (0.02 to 0.11) per decade	0.11 F (0.03 to 0.19) per decade	1895 to 2025	67	Rise
Mean daily maximum	0.09 C (0.04 to 0.15) per decade	0.2 F (0.1 to 0.3) per decade	1895 to 2025	67	Rise
Mean daily minimum	0.03 C (-0.01 to 0.07) per decade	0.05 F (-0.03 to 0.13) per decade	1895 to 2025	67	Not clearly different from zero

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

1894 to 2026

Yearly extremes at Cascade Locks: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	42.8 C (109.0 F)	2021	37.2 C (99.0 F)	75
Coldest night (TNn)	-19.4 C (-2.9 F)	1950	-10.0 C (14.0 F)	75
Wettest day (Rx1day)	141.2 mm (5.6 in)	1923	77.5 mm (3.1 in)	75
Wettest five days (Rx5day)	323.8 mm (12.7 in)	1923	191.7 mm (7.5 in)	75
Longest dry spell (CDD)	75 days	1922	40 days	75

Hottest day (TXx)

The hottest day of the year at Cascade Locks, 1894 to 2026. The record is 42.8 C (109.0 F) in 2021, marked on the chart; the median year is 37.2 C (99.0 F).

Hottest day (TXx) at Cascade Locks by year
Year	Hottest day (TXx)
1894	31.7 C (89.1 F)
1895	37.8 C (100.0 F)
1896	34.4 C (93.9 F)
1897	38.9 C (102.0 F)
1898	35.6 C (96.1 F)
1899	35.6 C (96.1 F)
1900	35.0 C (95.0 F)
1901	40.0 C (104.0 F)
1902	36.7 C (98.1 F)
1903	35.0 C (95.0 F)
1904	38.9 C (102.0 F)
1905	36.1 C (97.0 F)
1906	38.9 C (102.0 F)
1907	38.9 C (102.0 F)
1908	36.1 C (97.0 F)
1909	32.2 C (90.0 F)
1910	36.7 C (98.1 F)
1911	36.7 C (98.1 F)
1912	34.4 C (93.9 F)
1913	35.6 C (96.1 F)
1914	34.4 C (93.9 F)
1915	35.6 C (96.1 F)
1916	37.2 C (99.0 F)
1917	37.8 C (100.0 F)
1918	34.4 C (93.9 F)
1919	36.1 C (97.0 F)
1920	37.8 C (100.0 F)
1921	34.4 C (93.9 F)
1922	37.8 C (100.0 F)
1923	37.8 C (100.0 F)
1924	36.7 C (98.1 F)
1925	37.2 C (99.0 F)
1926	41.7 C (107.1 F)
1927	39.4 C (102.9 F)
1928	37.8 C (100.0 F)
1929	36.1 C (97.0 F)
1930	37.8 C (100.0 F)
1931	38.3 C (100.9 F)
1932	39.4 C (102.9 F)
1933	39.4 C (102.9 F)
1934	37.8 C (100.0 F)
1935	40.0 C (104.0 F)
1936	35.6 C (96.1 F)
1937	35.6 C (96.1 F)
1938	40.6 C (105.1 F)
1939	37.8 C (100.0 F)
1940	38.3 C (100.9 F)
1941	42.2 C (108.0 F)
1942	38.3 C (100.9 F)
1943	32.2 C (90.0 F)
1944	38.3 C (100.9 F)
1945	36.7 C (98.1 F)
1946	39.4 C (102.9 F)
1947	33.3 C (91.9 F)
1948	34.4 C (93.9 F)
1949	34.4 C (93.9 F)
1950	36.1 C (97.0 F)
1951	36.1 C (97.0 F)
1952	37.8 C (100.0 F)
1953	37.2 C (99.0 F)
1954	30.0 C (86.0 F)
2013	23.3 C (73.9 F)
2014	37.8 C (100.0 F)
2015	40.6 C (105.1 F)
2016	38.3 C (100.9 F)
2017	38.3 C (100.9 F)
2018	38.3 C (100.9 F)
2019	35.0 C (95.0 F)
2020	36.7 C (98.1 F)
2021	42.8 C (109.0 F)
2022	37.8 C (100.0 F)
2023	41.7 C (107.1 F)
2024	37.8 C (100.0 F)
2025	38.3 C (100.9 F)
2026	36.1 C (97.0 F)

Coldest night (TNn)

The coldest night of the year at Cascade Locks, 1894 to 2026. The record is -19.4 C (-2.9 F) in 1950, marked on the chart; the median year is -10.0 C (14.0 F).

Coldest night (TNn) at Cascade Locks by year
Year	Coldest night (TNn)
1894	-3.3 C (26.1 F)
1895	-6.7 C (19.9 F)
1896	-12.2 C (10.0 F)
1897	-7.8 C (18.0 F)
1898	-9.4 C (15.1 F)
1899	-15.6 C (3.9 F)
1900	-8.9 C (16.0 F)
1901	-2.8 C (27.0 F)
1902	-13.3 C (8.1 F)
1903	-7.8 C (18.0 F)
1904	-2.2 C (28.0 F)
1905	-11.7 C (10.9 F)
1906	-10.6 C (12.9 F)
1907	-15.0 C (5.0 F)
1908	-6.7 C (19.9 F)
1909	-18.9 C (-2.0 F)
1910	-11.7 C (10.9 F)
1911	-7.2 C (19.0 F)
1912	-13.9 C (7.0 F)
1913	-7.8 C (18.0 F)
1914	-10.0 C (14.0 F)
1915	-7.8 C (18.0 F)
1916	-17.8 C (0.0 F)
1917	-10.6 C (12.9 F)
1918	-7.2 C (19.0 F)
1919	-13.9 C (7.0 F)
1920	-7.2 C (19.0 F)
1921	-8.9 C (16.0 F)
1922	-15.0 C (5.0 F)
1923	-12.8 C (9.0 F)
1924	-16.7 C (1.9 F)
1925	-1.7 C (28.9 F)
1926	-12.8 C (9.0 F)
1927	-16.1 C (3.0 F)
1928	-12.8 C (9.0 F)
1929	-15.6 C (3.9 F)
1930	-17.2 C (1.0 F)
1931	-9.4 C (15.1 F)
1932	-12.8 C (9.0 F)
1933	-14.4 C (6.1 F)
1934	-0.6 C (30.9 F)
1935	-13.3 C (8.1 F)
1936	-12.8 C (9.0 F)
1937	-15.6 C (3.9 F)
1938	-6.1 C (21.0 F)
1939	-7.2 C (19.0 F)
1940	-5.6 C (21.9 F)
1941	-4.4 C (24.1 F)
1942	-11.1 C (12.0 F)
1943	-16.1 C (3.0 F)
1944	-4.4 C (24.1 F)
1945	-5.0 C (23.0 F)
1946	-5.0 C (23.0 F)
1947	-9.4 C (15.1 F)
1948	-9.4 C (15.1 F)
1949	-13.9 C (7.0 F)
1950	-19.4 C (-2.9 F)
1951	-10.0 C (14.0 F)
1952	-10.0 C (14.0 F)
1953	-2.8 C (27.0 F)
1954	-12.8 C (9.0 F)
2013	-13.3 C (8.1 F)
2014	-10.6 C (12.9 F)
2015	-6.1 C (21.0 F)
2016	-8.3 C (17.1 F)
2017	-11.7 C (10.9 F)
2018	-8.3 C (17.1 F)
2019	-6.7 C (19.9 F)
2020	-6.1 C (21.0 F)
2021	-6.7 C (19.9 F)
2022	-10.6 C (12.9 F)
2023	-8.3 C (17.1 F)
2024	-13.3 C (8.1 F)
2025	-6.1 C (21.0 F)
2026	-3.3 C (26.1 F)

Wettest day (Rx1day)

The wettest day of the year at Cascade Locks, 1894 to 2026. The record is 141.2 mm (5.6 in) in 1923, marked on the chart; the median year is 77.5 mm (3.1 in).

Wettest day (Rx1day) at Cascade Locks by year
Year	Wettest day (Rx1day)
1894	42.4 mm (1.7 in)
1895	68.6 mm (2.7 in)
1896	80.8 mm (3.2 in)
1897	50.8 mm (2.0 in)
1898	62.5 mm (2.5 in)
1899	67.6 mm (2.7 in)
1900	102.1 mm (4.0 in)
1901	115.6 mm (4.6 in)
1902	68.6 mm (2.7 in)
1903	108.5 mm (4.3 in)
1904	76.2 mm (3.0 in)
1905	47.5 mm (1.9 in)
1906	50.8 mm (2.0 in)
1907	88.9 mm (3.5 in)
1908	87.1 mm (3.4 in)
1909	107.4 mm (4.2 in)
1910	77.5 mm (3.1 in)
1911	92.2 mm (3.6 in)
1912	106.2 mm (4.2 in)
1913	70.6 mm (2.8 in)
1914	78.7 mm (3.1 in)
1915	90.4 mm (3.6 in)
1916	60.2 mm (2.4 in)
1917	114.6 mm (4.5 in)
1918	62.5 mm (2.5 in)
1919	57.2 mm (2.3 in)
1920	85.1 mm (3.4 in)
1921	114.8 mm (4.5 in)
1922	57.7 mm (2.3 in)
1923	141.2 mm (5.6 in)
1924	75.4 mm (3.0 in)
1925	68.3 mm (2.7 in)
1926	80.0 mm (3.1 in)
1927	101.6 mm (4.0 in)
1928	102.9 mm (4.1 in)
1929	67.1 mm (2.6 in)
1930	70.4 mm (2.8 in)
1931	101.6 mm (4.0 in)
1932	67.3 mm (2.6 in)
1933	127.3 mm (5.0 in)
1934	72.4 mm (2.9 in)
1935	66.8 mm (2.6 in)
1936	71.1 mm (2.8 in)
1937	83.8 mm (3.3 in)
1938	70.9 mm (2.8 in)
1939	57.7 mm (2.3 in)
1940	78.2 mm (3.1 in)
1941	90.2 mm (3.6 in)
1942	116.3 mm (4.6 in)
1943	70.1 mm (2.8 in)
1944	48.0 mm (1.9 in)
1945	90.9 mm (3.6 in)
1946	94.5 mm (3.7 in)
1947	62.0 mm (2.4 in)
1948	79.5 mm (3.1 in)
1949	78.2 mm (3.1 in)
1950	89.9 mm (3.5 in)
1951	64.3 mm (2.5 in)
1952	41.7 mm (1.6 in)
1953	94.2 mm (3.7 in)
1954	56.6 mm (2.2 in)
2013	101.1 mm (4.0 in)
2014	94.0 mm (3.7 in)
2015	75.7 mm (3.0 in)
2016	75.9 mm (3.0 in)
2017	118.4 mm (4.7 in)
2018	68.1 mm (2.7 in)
2019	55.9 mm (2.2 in)
2020	76.7 mm (3.0 in)
2021	106.2 mm (4.2 in)
2022	131.3 mm (5.2 in)
2023	69.3 mm (2.7 in)
2024	62.2 mm (2.4 in)
2025	130.3 mm (5.1 in)
2026	79.0 mm (3.1 in)

Wettest five days (Rx5day)

The wettest five days of the year at Cascade Locks, 1894 to 2026. The record is 323.8 mm (12.7 in) in 1923, marked on the chart; the median year is 191.7 mm (7.5 in).

Wettest five days (Rx5day) at Cascade Locks by year
Year	Wettest five days (Rx5day)
1894	142.9 mm (5.6 in)
1895	142.8 mm (5.6 in)
1896	271.3 mm (10.7 in)
1897	160.5 mm (6.3 in)
1898	145.3 mm (5.7 in)
1899	216.7 mm (8.5 in)
1900	164.3 mm (6.5 in)
1901	210.1 mm (8.3 in)
1902	182.5 mm (7.2 in)
1903	203.5 mm (8.0 in)
1904	156.7 mm (6.2 in)
1905	137.1 mm (5.4 in)
1906	200.9 mm (7.9 in)
1907	190.8 mm (7.5 in)
1908	185.9 mm (7.3 in)
1909	220.9 mm (8.7 in)
1910	213.4 mm (8.4 in)
1911	189.0 mm (7.4 in)
1912	240.3 mm (9.5 in)
1913	172.8 mm (6.8 in)
1914	156.2 mm (6.1 in)
1915	213.1 mm (8.4 in)
1916	159.5 mm (6.3 in)
1917	263.2 mm (10.4 in)
1918	197.8 mm (7.8 in)
1919	221.7 mm (8.7 in)
1920	212.1 mm (8.4 in)
1921	210.4 mm (8.3 in)
1922	162.3 mm (6.4 in)
1923	323.8 mm (12.7 in)
1924	191.7 mm (7.5 in)
1925	166.4 mm (6.6 in)
1926	175.3 mm (6.9 in)
1927	240.8 mm (9.5 in)
1928	192.0 mm (7.6 in)
1929	232.2 mm (9.1 in)
1930	112.2 mm (4.4 in)
1931	185.9 mm (7.3 in)
1932	140.1 mm (5.5 in)
1933	285.8 mm (11.3 in)
1934	219.2 mm (8.6 in)
1935	101.5 mm (4.0 in)
1936	208.0 mm (8.2 in)
1937	216.6 mm (8.5 in)
1938	167.6 mm (6.6 in)
1939	160.8 mm (6.3 in)
1940	186.4 mm (7.3 in)
1941	206.2 mm (8.1 in)
1942	239.8 mm (9.4 in)
1943	216.9 mm (8.5 in)
1944	104.2 mm (4.1 in)
1945	169.7 mm (6.7 in)
1946	310.4 mm (12.2 in)
1947	243.5 mm (9.6 in)
1948	213.9 mm (8.4 in)
1949	217.1 mm (8.5 in)
1950	209.0 mm (8.2 in)
1951	191.3 mm (7.5 in)
1952	159.0 mm (6.3 in)
1953	270.0 mm (10.6 in)
1954	111.8 mm (4.4 in)
2013	148.9 mm (5.9 in)
2014	166.0 mm (6.5 in)
2015	238.5 mm (9.4 in)
2016	177.5 mm (7.0 in)
2017	217.5 mm (8.6 in)
2018	130.2 mm (5.1 in)
2019	141.1 mm (5.6 in)
2020	158.7 mm (6.2 in)
2021	204.3 mm (8.0 in)
2022	233.6 mm (9.2 in)
2023	221.9 mm (8.7 in)
2024	138.0 mm (5.4 in)
2025	229.1 mm (9.0 in)
2026	159.5 mm (6.3 in)

Longest dry spell (CDD)

The longest dry spell of the year at Cascade Locks, 1894 to 2026. The record is 75 days in 1922, marked on the chart; the median year is 40 days.

Longest dry spell (CDD) at Cascade Locks by year
Year	Longest dry spell (CDD)
1894	14 days
1895	22 days
1896	51 days
1897	53 days
1898	24 days
1899	23 days
1900	34 days
1901	53 days
1902	22 days
1903	48 days
1904	30 days
1905	47 days
1906	43 days
1907	33 days
1908	15 days
1909	27 days
1910	45 days
1911	38 days
1912	21 days
1913	31 days
1914	52 days
1915	46 days
1916	30 days
1917	40 days
1918	23 days
1919	59 days
1920	36 days
1921	46 days
1922	75 days
1923	42 days
1924	60 days
1925	62 days
1926	58 days
1927	48 days
1928	68 days
1929	29 days
1930	72 days
1931	57 days
1932	40 days
1933	23 days
1934	37 days
1935	25 days
1936	42 days
1937	24 days
1938	35 days
1939	40 days
1940	49 days
1941	39 days
1942	66 days
1943	27 days
1944	73 days
1945	36 days
1946	44 days
1947	28 days
1948	19 days
1949	20 days
1950	25 days
1951	52 days
1952	55 days
1953	29 days
1954	12 days
2013	15 days
2014	23 days
2015	48 days
2016	53 days
2017	56 days
2018	47 days
2019	22 days
2020	51 days
2021	69 days
2022	56 days
2023	35 days
2024	41 days
2025	44 days
2026	48 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

67 years with a frost

Across 67 years with a frost, the median last spring frost at Cascade Locks falls on 6 April and the median first autumn frost on 12 November, which leaves a median of 220 days between them.

In 1935 to 2025 the median growing season was 224 days. That is 16 days more than in 1895 to 1927.

Fitted over all years, the growing season changes by +1.0 days per decade at this station.

Frost dates and growing season at Cascade Locks
Measure	Median, all years	Earliest period (1895 to 1927)	Recent period (1935 to 2025)	Recent against earliest	Fitted trend
Last spring frost	6 April	13 April	4 April	9 days earlier	-0.1 days per decade
First autumn frost	12 November	9 November	12 November	3 days later	+0.9 days per decade
Growing days	220 days	208 days	224 days	16 days more	+1.0 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

68 years, 1896 to 2025

A day with at least 79.4 mm (3.1 in) of rain is expected about once in 2 years. A day with at least 151.3 mm (6.0 in) of rain is expected about once in 100 years.

Rainfall return levels at Cascade Locks: the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	79.4 mm (3.1 in)
5 years	100.2 mm (3.9 in)
10 years	113.4 mm (4.5 in)
25 years	129.2 mm (5.1 in)
50 years	140.5 mm (5.5 in)
100 years	151.3 mm (6.0 in)	Longer than the 68 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, 68 years of values from 1896 to 2025.

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: 141.2 mm (5.6 in) in 1923; 131.3 mm (5.2 in) in 2022; 130.3 mm (5.1 in) in 2025.

Station Changes

No change in the annual mean temperature of this station was found against its neighbours.

Download the Data

Data for Cascade Locks standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Cascade Locks 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). Records are computed by this site and are not official.

Data as of 2026-10-12. Last revised 12 October 2026 (2026-10-12).