Pendleton Branch Exp STN Weather Records (USC00356540)

Record envelope, standing records and threshold days for Pendleton Branch Exp STN (USC00356540), Oregon, United States, with 95 years of record.

Key Facts for Pendleton Branch Exp STN

Pendleton Branch Exp STN (USC00356540) is a weather station in Oregon, United States at 45.72 latitude and -118.63 longitude, 453 m (1,487 ft) above sea level.
The station reports from 1932 to 2026, 95 years of record.
1,464 records set at Pendleton Branch Exp STN still stand.
Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
Pendleton Branch Exp STN set a daily record precipitation of 21.3 mm (0.8 in) on 24 April 2026.

About the Station

Location: Oregon, United States, 45.72 latitude, -118.63 longitude.
Elevation: 453 m (1,487 ft).
Period of record: 1932 to 2026, 95 years.
Eligible elements: tmax, tmin, prcp, snow, snwd.

Daily Record Envelope and 2026

0 days at or beyond a record

The band shows the record high and record low for each calendar day at Pendleton Branch Exp STN. The lines show the 2026 daily maximum and minimum. 0 days in 2026 matched or passed a record. Temperatures are in degrees Celsius.

Daily record high and record low at Pendleton Branch Exp STN, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	21.1 C (70.0 F)	-29.4 C (-20.9 F)	n/a	n/a
Feb	23.3 C (73.9 F)	-25.0 C (-13.0 F)	n/a	n/a
Mar	28.9 C (84.0 F)	-21.1 C (-6.0 F)	n/a	n/a
Apr	32.8 C (91.0 F)	-10.0 C (14.0 F)	23.9 C (75.0 F)	-3.9 C (25.0 F)
May	37.8 C (100.0 F)	-6.1 C (21.0 F)	n/a	n/a
Jun	46.1 C (115.0 F)	-2.2 C (28.0 F)	n/a	n/a
Jul	43.3 C (109.9 F)	0.6 C (33.1 F)	n/a	n/a
Aug	46.1 C (115.0 F)	-1.1 C (30.0 F)	n/a	n/a
Sep	40.6 C (105.1 F)	-6.7 C (19.9 F)	25.6 C (78.1 F)	5.0 C (41.0 F)
Oct	32.2 C (90.0 F)	-15.0 C (5.0 F)	n/a	n/a
Nov	27.2 C (81.0 F)	-25.0 C (-13.0 F)	n/a	n/a
Dec	22.2 C (72.0 F)	-30.6 C (-23.1 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Pendleton Branch Exp STN still stand. 1985 holds the most, with 40.

Standing records at Pendleton Branch Exp STN by the year they were set
Year set	Standing records
1932	5
1933	21
1934	24
1935	34
1936	31
1938	19
1939	24
1940	14
1941	14
1942	15
1943	3
1956	2
1957	32
1958	25
1959	21
1960	24
1961	29
1962	20
1963	12
1964	28
1965	27
1966	20
1967	15
1968	29
1969	26
1970	24
1971	25
1972	35
1973	12
1974	24
1975	18
1976	23
1977	17
1978	19
1979	11
1980	15
1981	12
1982	12
1983	26
1984	13
1985	40
1986	21
1987	23
1988	14
1989	23
1990	18
1991	13
1992	19
1993	26
1994	13
1995	17
1996	22
1997	18
1998	12
1999	16
2000	1
2001	9
2002	21
2003	23
2004	6
2005	8
2006	24
2007	9
2008	19
2009	8
2010	14
2011	7
2012	2
2013	8
2014	28
2015	11
2016	15
2017	11
2018	7
2019	23
2020	17
2021	27
2022	23
2023	12
2024	23
2025	13

All-Time Record Progression

2 new records

2 all-time records were set at Pendleton Branch Exp STN between 14 October 1980 and 16 August 1993. Each dot is a new record.

When Pendleton Branch Exp STN set new all-time records
Date	Kind	Detail
1980-10-14	Record daily precipitation	Record daily precipitation 40.9 mm (1.6 in)
1993-08-16	Record daily precipitation	Record daily precipitation 46.7 mm (1.8 in)

Wettest Day of Each Month

Aug: 46.7 mm (1.8 in)

The wettest day on record for each calendar month at Pendleton Branch Exp STN. The most was 46.7 mm (1.8 in) on 16 August 1993.

Record daily precipitation for each month at Pendleton Branch Exp STN
Month	Record daily precipitation (mm)	Date
Jan	26.9 mm (1.1 in)	10 January 1989
Feb	43.7 mm (1.7 in)	21 February 2025
Mar	29.0 mm (1.1 in)	4 March 1983
Apr	30.5 mm (1.2 in)	29 April 1933
May	39.9 mm (1.6 in)	19 May 1991
Jun	39.4 mm (1.6 in)	26 June 1942
Jul	29.0 mm (1.1 in)	9 July 2016
Aug	46.7 mm (1.8 in)	16 August 1993
Sep	24.6 mm (1.0 in)	2 September 1971
Oct	40.9 mm (1.6 in)	14 October 1980
Nov	37.1 mm (1.5 in)	19 November 1996
Dec	33.8 mm (1.3 in)	6 December 1971

Period of Record Coverage

1932 to 2026

82 years of record at Pendleton Branch Exp STN, 1932 to 2026. 19 years have data for under 90 percent of days and are left out of rankings: 1932, 1934, 1936, 1943, 1956, 1963, 2000, 2002 and others.

Days with data per year at Pendleton Branch Exp STN
Year	Days with data	Share of year	Complete
1932	31	8%	No
1933	355	97%	Yes
1934	327	90%	No
1935	341	93%	Yes
1936	237	65%	No
1938	364	100%	Yes
1939	362	99%	Yes
1940	364	99%	Yes
1941	331	91%	Yes
1942	358	98%	Yes
1943	151	41%	No
1956	122	33%	No
1957	360	99%	Yes
1958	362	99%	Yes
1959	364	100%	Yes
1960	366	100%	Yes
1961	364	100%	Yes
1962	365	100%	Yes
1963	182	50%	No
1964	366	100%	Yes
1965	365	100%	Yes
1966	365	100%	Yes
1967	365	100%	Yes
1968	366	100%	Yes
1969	365	100%	Yes
1970	365	100%	Yes
1971	365	100%	Yes
1972	366	100%	Yes
1973	365	100%	Yes
1974	365	100%	Yes
1975	365	100%	Yes
1976	366	100%	Yes
1977	365	100%	Yes
1978	365	100%	Yes
1979	365	100%	Yes
1980	366	100%	Yes
1981	365	100%	Yes
1982	364	100%	Yes
1983	365	100%	Yes
1984	366	100%	Yes
1985	365	100%	Yes
1986	365	100%	Yes
1987	365	100%	Yes
1988	366	100%	Yes
1989	365	100%	Yes
1990	336	92%	Yes
1991	364	100%	Yes
1992	365	100%	Yes
1993	362	99%	Yes
1994	365	100%	Yes
1995	365	100%	Yes
1996	366	100%	Yes
1997	363	99%	Yes
1998	365	100%	Yes
1999	364	100%	Yes
2000	275	75%	No
2001	334	92%	Yes
2002	304	83%	No
2003	364	100%	Yes
2004	366	100%	Yes
2005	364	100%	Yes
2006	364	100%	Yes
2007	361	99%	Yes
2008	327	89%	No
2009	212	58%	No
2010	358	98%	Yes
2011	147	40%	No
2012	121	33%	No
2013	123	34%	No
2014	276	76%	No
2015	210	58%	No
2016	364	99%	Yes
2017	365	100%	Yes
2018	362	99%	Yes
2019	365	100%	Yes
2020	366	100%	Yes
2021	340	93%	Yes
2022	322	88%	No
2023	253	69%	No
2024	365	100%	Yes
2025	166	45%	No
2026	11	3%	No

Latest Records

Latest records at Pendleton Branch Exp STN
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
24 April 2026	Pendleton Branch Exp STN, US	daily rain	21.3 mm (0.8 in)	8.9 mm (0.35 in)	29 years	20 of 100 (Routine)
3 April 2026	Pendleton Branch Exp STN, US	daily rain	29.2 mm (1.1 in)	17.5 mm (0.7 in)	68 years	66 of 100 (Major)
26 August 2025	Pendleton Branch Exp STN, US	daily high min	17.8 C (64.0 F)	1.1 C (2.0 F)	67 years	32 of 100 (Routine)
12 August 2025	Pendleton Branch Exp STN, US	daily high max (Tie)	40.0 C (104.0 F)	tie	54 years	6 of 100 (Routine)
2 July 2025	Pendleton Branch Exp STN, US	daily high max	39.4 C (102.9 F)	2.2 C (4.0 F)	83 years	37 of 100 (Notable)
2 July 2025	Pendleton Branch Exp STN, US	daily high min	20.0 C (68.0 F)	1.7 C (3.1 F)	38 years	24 of 100 (Routine)
27 March 2025	Pendleton Branch Exp STN, US	daily high min	8.9 C (48.0 F)	1.1 C (2.0 F)	82 years	35 of 100 (Notable)
27 March 2025	Pendleton Branch Exp STN, US	monthly high max	28.9 C (84.0 F)	1.1 C (2.0 F)	21 years	27 of 100 (Routine)
26 March 2025	Pendleton Branch Exp STN, US	monthly high min	16.1 C (61.0 F)	1.7 C (3.1 F)	82 years	47 of 100 (Notable)
26 March 2025	Pendleton Branch Exp STN, US	daily high max	26.7 C (80.1 F)	2.3 C (4.1 F)	64 years	33 of 100 (Routine)
24 March 2025	Pendleton Branch Exp STN, US	daily high min	10.0 C (50.0 F)	1.1 C (2.0 F)	84 years	36 of 100 (Notable)
28 February 2025	Pendleton Branch Exp STN, US	daily high max (Tie)	17.8 C (64.0 F)	tie	66 years	7 of 100 (Routine)
27 February 2025	Pendleton Branch Exp STN, US	daily high max	17.2 C (63.0 F)	0.5 C (0.9 F)	84 years	34 of 100 (Routine)
21 February 2025	Pendleton Branch Exp STN, US	monthly rain	43.7 mm (1.7 in)	18.6 mm (0.7 in)	87 years	85 of 100 (Exceptional)
13 February 2025	Pendleton Branch Exp STN, US	daily low min	-18.9 C (-2.0 F)	2.2 C (4.0 F)	89 years	39 of 100 (Notable)
12 February 2025	Pendleton Branch Exp STN, US	daily low min	-19.4 C (-2.9 F)	1.6 C (2.9 F)	92 years	39 of 100 (Notable)
12 February 2025	Pendleton Branch Exp STN, US	daily low max	-7.2 C (19.0 F)	0.5 C (0.9 F)	89 years	35 of 100 (Notable)
11 February 2025	Pendleton Branch Exp STN, US	daily low min	-21.7 C (-7.1 F)	0.6 C (1.1 F)	89 years	36 of 100 (Notable)
6 February 2025	Pendleton Branch Exp STN, US	daily snowfall	6.4 cm (2.5 in)	2.6 cm (1.0 in)	87 years	41 of 100 (Notable)
29 December 2024	Pendleton Branch Exp STN, US	daily high min (Tie)	4.4 C (39.9 F)	tie	27 years	4 of 100 (Routine)

Climate Trend

59 complete years, 1935 to 2024

One stripe for each of 59 complete years at Pendleton Branch Exp STN, 1935 to 2024. Blue stripes are years cooler than the station's own mean of 10.4 C (50.7 F); red stripes are warmer. The coolest year was 1985, at 8.3 C (46.9 F), and the warmest was 1958, at 12.0 C (53.6 F). The strongest colour marks a difference of 2.2 C (4.0 F).

Annual mean temperature at Pendleton Branch Exp STN as warming stripes, 1935 to 2024
Year	Annual mean temperature	Difference from the station mean
1935	9.0 C	-1.34 C
1938	10.6 C	+0.18 C
1939	11.0 C	+0.64 C
1940	11.0 C	+0.60 C
1942	10.3 C	-0.05 C
1957	9.9 C	-0.52 C
1958	12.0 C	+1.63 C
1959	10.1 C	-0.29 C
1960	10.1 C	-0.33 C
1961	11.2 C	+0.85 C
1962	10.7 C	+0.31 C
1964	9.7 C	-0.66 C
1965	10.5 C	+0.09 C
1966	10.8 C	+0.44 C
1967	11.1 C	+0.75 C
1968	10.8 C	+0.44 C
1969	9.7 C	-0.70 C
1970	10.2 C	-0.18 C
1971	10.1 C	-0.33 C
1972	9.8 C	-0.63 C
1973	10.4 C	-0.02 C
1974	10.4 C	+0.04 C
1975	9.6 C	-0.79 C
1976	10.0 C	-0.40 C
1977	9.9 C	-0.51 C
1978	9.5 C	-0.87 C
1979	9.9 C	-0.53 C
1980	9.9 C	-0.45 C
1981	10.6 C	+0.19 C
1982	10.0 C	-0.37 C
1983	10.5 C	+0.14 C
1984	9.8 C	-0.56 C
1985	8.3 C	-2.10 C
1986	10.7 C	+0.29 C
1987	10.7 C	+0.30 C
1988	10.7 C	+0.30 C
1989	10.0 C	-0.43 C
1991	10.5 C	+0.10 C
1992	11.3 C	+0.95 C
1993	9.1 C	-1.32 C
1994	11.0 C	+0.65 C
1995	10.7 C	+0.27 C
1996	10.2 C	-0.18 C
1997	10.7 C	+0.31 C
1998	11.6 C	+1.18 C
1999	11.0 C	+0.59 C
2003	11.6 C	+1.23 C
2004	10.8 C	+0.45 C
2005	10.4 C	+0.03 C
2006	11.0 C	+0.60 C
2007	10.3 C	-0.13 C
2010	10.1 C	-0.26 C
2016	11.0 C	+0.59 C
2017	9.8 C	-0.60 C
2018	10.6 C	+0.17 C
2019	9.2 C	-1.19 C
2020	10.5 C	+0.12 C
2021	10.8 C	+0.40 C
2024	11.3 C	+0.95 C

The fitted trend in annual mean temperature here over 1935 to 2024 is 0.03 C (-0.05 to 0.11) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: 0.1 F (-0.1 to 0.2) per decade. The slope is a straight line fitted to 59 complete years; the brackets give its 95 percent interval.

Fitted temperature trends per decade at Pendleton Branch Exp STN
Measure	Per decade (C)	Per decade (F)	Period	Complete years	Reading
Annual mean temperature	0.03 C (-0.05 to 0.11) per decade	0.1 F (-0.1 to 0.2) per decade	1935 to 2024	59	Not clearly different from zero
Mean daily maximum	0.02 C (-0.08 to 0.12) per decade	0.04 F (-0.15 to 0.22) per decade	1935 to 2024	59	Not clearly different from zero
Mean daily minimum	0.04 C (-0.03 to 0.11) per decade	0.1 F (-0.1 to 0.2) per decade	1935 to 2024	59	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

1932 to 2026

Yearly extremes at Pendleton Branch Exp STN: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	46.1 C (115.0 F)	1961	40.0 C (104.0 F)	82
Coldest night (TNn)	-30.6 C (-23.1 F)	1968	-20.6 C (-5.1 F)	82
Wettest day (Rx1day)	46.7 mm (1.8 in)	1993	23.1 mm (0.9 in)	83
Wettest five days (Rx5day)	81.1 mm (3.2 in)	1991	41.2 mm (1.6 in)	81
Longest dry spell (CDD)	109 days	1974	40 days	83

Hottest day (TXx)

The hottest day of the year at Pendleton Branch Exp STN, 1932 to 2026. The record is 46.1 C (115.0 F) in 1961, marked on the chart; the median year is 40.0 C (104.0 F).

Hottest day (TXx) at Pendleton Branch Exp STN by year
Year	Hottest day (TXx)
1932	14.4 C (57.9 F)
1933	40.0 C (104.0 F)
1934	41.1 C (106.0 F)
1935	43.3 C (109.9 F)
1936	40.6 C (105.1 F)
1937	n/a
1938	41.7 C (107.1 F)
1939	43.3 C (109.9 F)
1940	38.3 C (100.9 F)
1941	41.7 C (107.1 F)
1942	40.6 C (105.1 F)
1943	29.4 C (84.9 F)
1956	32.2 C (90.0 F)
1957	36.7 C (98.1 F)
1958	41.7 C (107.1 F)
1959	42.2 C (108.0 F)
1960	43.3 C (109.9 F)
1961	46.1 C (115.0 F)
1962	40.0 C (104.0 F)
1963	30.6 C (87.1 F)
1964	38.9 C (102.0 F)
1965	40.6 C (105.1 F)
1966	37.2 C (99.0 F)
1967	40.6 C (105.1 F)
1968	42.2 C (108.0 F)
1969	38.3 C (100.9 F)
1970	39.4 C (102.9 F)
1971	41.7 C (107.1 F)
1972	43.3 C (109.9 F)
1973	38.9 C (102.0 F)
1974	38.3 C (100.9 F)
1975	40.6 C (105.1 F)
1976	37.8 C (100.0 F)
1977	40.0 C (104.0 F)
1978	40.6 C (105.1 F)
1979	41.1 C (106.0 F)
1980	38.9 C (102.0 F)
1981	39.4 C (102.9 F)
1982	40.6 C (105.1 F)
1983	37.2 C (99.0 F)
1984	38.9 C (102.0 F)
1985	40.6 C (105.1 F)
1986	40.0 C (104.0 F)
1987	40.0 C (104.0 F)
1988	38.9 C (102.0 F)
1989	37.8 C (100.0 F)
1990	42.2 C (108.0 F)
1991	37.8 C (100.0 F)
1992	40.0 C (104.0 F)
1993	36.7 C (98.1 F)
1994	41.7 C (107.1 F)
1995	36.7 C (98.1 F)
1996	41.7 C (107.1 F)
1997	38.9 C (102.0 F)
1998	43.9 C (111.0 F)
1999	38.9 C (102.0 F)
2000	40.6 C (105.1 F)
2001	38.3 C (100.9 F)
2002	43.3 C (109.9 F)
2003	41.7 C (107.1 F)
2004	39.4 C (102.9 F)
2005	38.9 C (102.0 F)
2006	42.2 C (108.0 F)
2007	41.1 C (106.0 F)
2008	42.8 C (109.0 F)
2009	38.9 C (102.0 F)
2010	38.3 C (100.9 F)
2011	25.0 C (77.0 F)
2012	21.1 C (70.0 F)
2013	26.7 C (80.1 F)
2014	40.0 C (104.0 F)
2015	40.6 C (105.1 F)
2016	38.9 C (102.0 F)
2017	38.9 C (102.0 F)
2018	40.6 C (105.1 F)
2019	38.3 C (100.9 F)
2020	41.7 C (107.1 F)
2021	46.1 C (115.0 F)
2022	43.3 C (109.9 F)
2023	42.2 C (108.0 F)
2024	43.3 C (109.9 F)
2025	40.0 C (104.0 F)
2026	25.6 C (78.1 F)

Coldest night (TNn)

The coldest night of the year at Pendleton Branch Exp STN, 1932 to 2026. The record is -30.6 C (-23.1 F) in 1968, marked on the chart; the median year is -20.6 C (-5.1 F).

Coldest night (TNn) at Pendleton Branch Exp STN by year
Year	Coldest night (TNn)
1932	-26.1 C (-15.0 F)
1933	-22.8 C (-9.0 F)
1934	-6.1 C (21.0 F)
1935	-23.9 C (-11.0 F)
1936	-23.3 C (-9.9 F)
1937	n/a
1938	-12.2 C (10.0 F)
1939	-22.2 C (-8.0 F)
1940	-13.3 C (8.1 F)
1941	-18.9 C (-2.0 F)
1942	-29.4 C (-20.9 F)
1943	-22.8 C (-9.0 F)
1956	-14.4 C (6.1 F)
1957	-25.6 C (-14.1 F)
1958	-15.0 C (5.0 F)
1959	-19.4 C (-2.9 F)
1960	-19.4 C (-2.9 F)
1961	-26.1 C (-15.0 F)
1962	-24.4 C (-11.9 F)
1963	-27.8 C (-18.0 F)
1964	-26.1 C (-15.0 F)
1965	-11.7 C (10.9 F)
1966	-10.0 C (14.0 F)
1967	-17.2 C (1.0 F)
1968	-30.6 C (-23.1 F)
1969	-25.6 C (-14.1 F)
1970	-15.6 C (3.9 F)
1971	-12.8 C (9.0 F)
1972	-27.2 C (-17.0 F)
1973	-25.0 C (-13.0 F)
1974	-27.2 C (-17.0 F)
1975	-14.4 C (6.1 F)
1976	-13.3 C (8.1 F)
1977	-21.7 C (-7.1 F)
1978	-25.6 C (-14.1 F)
1979	-26.7 C (-16.1 F)
1980	-24.4 C (-11.9 F)
1981	-14.4 C (6.1 F)
1982	-24.4 C (-11.9 F)
1983	-22.8 C (-9.0 F)
1984	-22.8 C (-9.0 F)
1985	-24.4 C (-11.9 F)
1986	-8.3 C (17.1 F)
1987	-19.4 C (-2.9 F)
1988	-16.1 C (3.0 F)
1989	-21.7 C (-7.1 F)
1990	-30.0 C (-22.0 F)
1991	-11.7 C (10.9 F)
1992	-16.1 C (3.0 F)
1993	-24.4 C (-11.9 F)
1994	-18.9 C (-2.0 F)
1995	-20.6 C (-5.1 F)
1996	-25.0 C (-13.0 F)
1997	-19.4 C (-2.9 F)
1998	-20.6 C (-5.1 F)
1999	-9.4 C (15.1 F)
2000	-8.9 C (16.0 F)
2001	-7.2 C (19.0 F)
2002	-12.8 C (9.0 F)
2003	-13.9 C (7.0 F)
2004	-28.9 C (-20.0 F)
2005	-16.1 C (3.0 F)
2006	-15.0 C (5.0 F)
2007	-16.1 C (3.0 F)
2008	-27.2 C (-17.0 F)
2009	-23.3 C (-9.9 F)
2010	-25.0 C (-13.0 F)
2011	-20.6 C (-5.1 F)
2012	-12.2 C (10.0 F)
2013	-11.7 C (10.9 F)
2014	-20.0 C (-4.0 F)
2015	-17.2 C (1.0 F)
2016	-23.3 C (-9.9 F)
2017	-25.0 C (-13.0 F)
2018	-14.4 C (6.1 F)
2019	-21.1 C (-6.0 F)
2020	-13.3 C (8.1 F)
2021	-25.6 C (-14.1 F)
2022	-25.6 C (-14.1 F)
2023	-8.3 C (17.1 F)
2024	-22.2 C (-8.0 F)
2025	-21.7 C (-7.1 F)
2026	-3.9 C (25.0 F)

Wettest day (Rx1day)

The wettest day of the year at Pendleton Branch Exp STN, 1932 to 2026. The record is 46.7 mm (1.8 in) in 1993, marked on the chart; the median year is 23.1 mm (0.9 in).

Wettest day (Rx1day) at Pendleton Branch Exp STN by year
Year	Wettest day (Rx1day)
1932	5.1 mm (0.20 in)
1933	30.5 mm (1.2 in)
1934	17.3 mm (0.7 in)
1935	20.8 mm (0.8 in)
1936	30.7 mm (1.2 in)
1937	22.1 mm (0.9 in)
1938	25.1 mm (1.0 in)
1939	21.1 mm (0.8 in)
1940	23.9 mm (0.9 in)
1941	24.6 mm (1.0 in)
1942	39.4 mm (1.6 in)
1943	22.4 mm (0.9 in)
1956	23.1 mm (0.9 in)
1957	23.6 mm (0.9 in)
1958	29.0 mm (1.1 in)
1959	17.3 mm (0.7 in)
1960	18.8 mm (0.7 in)
1961	18.0 mm (0.7 in)
1962	21.3 mm (0.8 in)
1963	18.8 mm (0.7 in)
1964	18.0 mm (0.7 in)
1965	18.3 mm (0.7 in)
1966	26.2 mm (1.0 in)
1967	18.5 mm (0.7 in)
1968	17.3 mm (0.7 in)
1969	24.1 mm (0.9 in)
1970	24.4 mm (1.0 in)
1971	33.8 mm (1.3 in)
1972	23.1 mm (0.9 in)
1973	10.9 mm (0.4 in)
1974	22.6 mm (0.9 in)
1975	26.2 mm (1.0 in)
1976	15.2 mm (0.6 in)
1977	18.0 mm (0.7 in)
1978	25.9 mm (1.0 in)
1979	37.6 mm (1.5 in)
1980	40.9 mm (1.6 in)
1981	26.2 mm (1.0 in)
1982	28.2 mm (1.1 in)
1983	29.0 mm (1.1 in)
1984	20.3 mm (0.8 in)
1985	18.0 mm (0.7 in)
1986	23.6 mm (0.9 in)
1987	21.1 mm (0.8 in)
1988	25.9 mm (1.0 in)
1989	27.9 mm (1.1 in)
1990	23.4 mm (0.9 in)
1991	39.9 mm (1.6 in)
1992	20.6 mm (0.8 in)
1993	46.7 mm (1.8 in)
1994	35.1 mm (1.4 in)
1995	28.7 mm (1.1 in)
1996	37.1 mm (1.5 in)
1997	24.1 mm (0.9 in)
1998	33.3 mm (1.3 in)
1999	20.6 mm (0.8 in)
2000	25.4 mm (1.0 in)
2001	18.5 mm (0.7 in)
2002	19.3 mm (0.8 in)
2003	20.6 mm (0.8 in)
2004	26.7 mm (1.1 in)
2005	14.0 mm (0.6 in)
2006	24.4 mm (1.0 in)
2007	19.3 mm (0.8 in)
2008	18.3 mm (0.7 in)
2009	21.8 mm (0.9 in)
2010	25.9 mm (1.0 in)
2011	27.7 mm (1.1 in)
2012	16.0 mm (0.6 in)
2013	11.9 mm (0.5 in)
2014	21.6 mm (0.9 in)
2015	18.5 mm (0.7 in)
2016	29.0 mm (1.1 in)
2017	17.0 mm (0.7 in)
2018	24.1 mm (0.9 in)
2019	23.1 mm (0.9 in)
2020	36.3 mm (1.4 in)
2021	15.0 mm (0.6 in)
2022	16.0 mm (0.6 in)
2023	7.4 mm (0.29 in)
2024	17.0 mm (0.7 in)
2025	43.7 mm (1.7 in)
2026	29.2 mm (1.1 in)

Wettest five days (Rx5day)

The wettest five days of the year at Pendleton Branch Exp STN, 1932 to 2026. The record is 81.1 mm (3.2 in) in 1991, marked on the chart; the median year is 41.2 mm (1.6 in).

Wettest five days (Rx5day) at Pendleton Branch Exp STN by year
Year	Wettest five days (Rx5day)
1932	9.2 mm (0.36 in)
1933	60.2 mm (2.4 in)
1934	38.3 mm (1.5 in)
1935	27.7 mm (1.1 in)
1936	39.9 mm (1.6 in)
1937	47.8 mm (1.9 in)
1938	52.5 mm (2.1 in)
1939	36.8 mm (1.4 in)
1940	44.5 mm (1.8 in)
1941	57.8 mm (2.3 in)
1942	70.4 mm (2.8 in)
1943	36.9 mm (1.5 in)
1956	27.4 mm (1.1 in)
1957	43.0 mm (1.7 in)
1958	47.8 mm (1.9 in)
1959	41.6 mm (1.6 in)
1960	31.5 mm (1.2 in)
1961	32.8 mm (1.3 in)
1962	45.2 mm (1.8 in)
1963	41.7 mm (1.6 in)
1964	48.6 mm (1.9 in)
1965	37.7 mm (1.5 in)
1966	47.1 mm (1.9 in)
1967	29.4 mm (1.2 in)
1968	41.4 mm (1.6 in)
1969	33.9 mm (1.3 in)
1970	48.6 mm (1.9 in)
1971	61.8 mm (2.4 in)
1972	30.2 mm (1.2 in)
1973	23.8 mm (0.9 in)
1974	42.5 mm (1.7 in)
1975	51.0 mm (2.0 in)
1976	36.2 mm (1.4 in)
1977	33.1 mm (1.3 in)
1978	39.6 mm (1.6 in)
1979	44.1 mm (1.7 in)
1980	73.0 mm (2.9 in)
1981	44.5 mm (1.8 in)
1982	43.7 mm (1.7 in)
1983	44.4 mm (1.7 in)
1984	34.0 mm (1.3 in)
1985	29.4 mm (1.2 in)
1986	30.7 mm (1.2 in)
1987	33.9 mm (1.3 in)
1988	41.2 mm (1.6 in)
1989	41.6 mm (1.6 in)
1990	43.0 mm (1.7 in)
1991	81.1 mm (3.2 in)
1992	37.2 mm (1.5 in)
1993	66.0 mm (2.6 in)
1994	55.9 mm (2.2 in)
1995	38.4 mm (1.5 in)
1996	50.1 mm (2.0 in)
1997	46.7 mm (1.8 in)
1998	43.9 mm (1.7 in)
1999	36.2 mm (1.4 in)
2000	47.9 mm (1.9 in)
2001	26.0 mm (1.0 in)
2002	43.7 mm (1.7 in)
2003	47.6 mm (1.9 in)
2004	45.7 mm (1.8 in)
2005	35.6 mm (1.4 in)
2006	46.3 mm (1.8 in)
2007	32.7 mm (1.3 in)
2008	33.8 mm (1.3 in)
2009	34.6 mm (1.4 in)
2010	39.2 mm (1.5 in)
2011	41.2 mm (1.6 in)
2012	42.5 mm (1.7 in)
2013	21.9 mm (0.9 in)
2014	31.8 mm (1.3 in)
2015	37.1 mm (1.5 in)
2016	38.7 mm (1.5 in)
2017	32.5 mm (1.3 in)
2018	34.9 mm (1.4 in)
2019	42.4 mm (1.7 in)
2020	73.9 mm (2.9 in)
2021	32.1 mm (1.3 in)
2022	22.9 mm (0.9 in)
2023	0.0 mm (0.00 in)
2024	0.0 mm (0.00 in)
2025	n/a
2026	n/a

Longest dry spell (CDD)

The longest dry spell of the year at Pendleton Branch Exp STN, 1932 to 2026. The record is 109 days in 1974, marked on the chart; the median year is 40 days.

Longest dry spell (CDD) at Pendleton Branch Exp STN by year
Year	Longest dry spell (CDD)
1932	12 days
1933	35 days
1934	50 days
1935	42 days
1936	53 days
1937	25 days
1938	60 days
1939	59 days
1940	38 days
1941	35 days
1942	42 days
1943	23 days
1956	29 days
1957	94 days
1958	79 days
1959	35 days
1960	46 days
1961	41 days
1962	55 days
1963	20 days
1964	30 days
1965	25 days
1966	45 days
1967	59 days
1968	32 days
1969	78 days
1970	52 days
1971	23 days
1972	24 days
1973	67 days
1974	109 days
1975	54 days
1976	40 days
1977	36 days
1978	46 days
1979	42 days
1980	39 days
1981	73 days
1982	19 days
1983	26 days
1984	24 days
1985	53 days
1986	42 days
1987	56 days
1988	84 days
1989	32 days
1990	42 days
1991	76 days
1992	32 days
1993	58 days
1994	29 days
1995	28 days
1996	76 days
1997	34 days
1998	37 days
1999	39 days
2000	56 days
2001	56 days
2002	53 days
2003	66 days
2004	38 days
2005	61 days
2006	76 days
2007	31 days
2008	47 days
2009	51 days
2010	50 days
2011	23 days
2012	17 days
2013	20 days
2014	22 days
2015	30 days
2016	28 days
2017	82 days
2018	65 days
2019	38 days
2020	42 days
2021	26 days
2022	5 days
2023	5 days
2024	5 days
2025	4 days
2026	3 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

59 years with a frost

Across 59 years with a frost, the median last spring frost at Pendleton Branch Exp STN falls on 13 May and the median first autumn frost on 23 September, which leaves a median of 136 days between them.

Fitted over all years, the growing season changes by +3.0 days per decade at this station.

Frost dates and growing season at Pendleton Branch Exp STN
Measure	Median, all years	Earliest period	Recent period (1982 to 2024)	Recent against earliest	Fitted trend
Last spring frost	13 May	n/a	10 May	n/a	-2.2 days per decade
First autumn frost	23 September	n/a	24 September	n/a	+0.8 days per decade
Growing days	136 days	n/a	141 days	n/a	+3.0 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

63 years, 1933 to 2020

A day with at least 23.5 mm (0.9 in) of rain is expected about once in 2 years. A day with at least 49.6 mm (2.0 in) of rain is expected about once in 100 years.

Rainfall return levels at Pendleton Branch Exp STN: the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	23.5 mm (0.9 in)
5 years	29.7 mm (1.2 in)
10 years	34.1 mm (1.3 in)
25 years	40.0 mm (1.6 in)
50 years	44.7 mm (1.8 in)
100 years	49.6 mm (2.0 in)	Longer than the 63 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, 63 years of values from 1933 to 2020.

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: 46.7 mm (1.8 in) in 1993; 40.9 mm (1.6 in) in 1980; 39.9 mm (1.6 in) in 1991.

Station Changes

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

Download the Data

Data for Pendleton Branch Exp STN standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Pendleton Branch Exp STN 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 2026-10-12. Last revised 12 October 2026 (2026-10-12).