Malheur Branch Exp STN Weather Records (USC00355160)

Record envelope, standing records and threshold days for Malheur Branch Exp STN (USC00355160), Oregon, United States, with 81 years of record.

Key Facts for Malheur Branch Exp STN

Malheur Branch Exp STN (USC00355160) is a weather station in Oregon, United States at 43.98 latitude and -117.02 longitude, 689 m (2,260 ft) above sea level.
The station reports from 1942 to 2022, 81 years of record.
1,464 records set at Malheur Branch Exp STN still stand.
Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
Malheur Branch Exp STN set a daily record precipitation of 14.0 mm (0.6 in) on 12 December 2022.

About the Station

Location: Oregon, United States, 43.98 latitude, -117.02 longitude.
Elevation: 689 m (2,260 ft).
Period of record: 1942 to 2022, 81 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 Malheur 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 Malheur Branch Exp STN, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	17.8 C (64.0 F)	-32.2 C (-26.0 F)	n/a	n/a
Feb	18.9 C (66.0 F)	-31.1 C (-24.0 F)	n/a	n/a
Mar	26.7 C (80.1 F)	-15.0 C (5.0 F)	n/a	n/a
Apr	32.8 C (91.0 F)	-7.8 C (18.0 F)	n/a	n/a
May	37.8 C (100.0 F)	-3.9 C (25.0 F)	n/a	n/a
Jun	41.1 C (106.0 F)	-1.1 C (30.0 F)	n/a	n/a
Jul	43.3 C (109.9 F)	2.2 C (36.0 F)	n/a	n/a
Aug	42.2 C (108.0 F)	2.8 C (37.0 F)	n/a	n/a
Sep	37.8 C (100.0 F)	-3.9 C (25.0 F)	n/a	n/a
Oct	34.4 C (93.9 F)	-12.2 C (10.0 F)	n/a	n/a
Nov	25.0 C (77.0 F)	-21.1 C (-6.0 F)	n/a	n/a
Dec	18.3 C (64.9 F)	-29.4 C (-20.9 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Malheur Branch Exp STN still stand. 1985 holds the most, with 42.

Standing records at Malheur Branch Exp STN by the year they were set
Year set	Standing records
1942	3
1943	24
1944	13
1945	16
1946	17
1947	18
1948	19
1949	22
1950	30
1951	17
1952	18
1953	29
1954	33
1955	39
1956	18
1957	15
1958	12
1959	15
1960	26
1961	23
1962	22
1963	13
1964	18
1965	24
1966	29
1967	12
1968	20
1969	18
1970	15
1971	23
1972	37
1973	11
1974	23
1975	19
1976	11
1977	21
1978	10
1979	22
1980	14
1981	8
1982	14
1983	17
1984	20
1985	42
1986	24
1987	19
1988	16
1989	31
1990	28
1991	16
1992	19
1993	38
1994	13
1995	24
1996	20
1997	15
1998	21
1999	12
2000	9
2001	11
2002	14
2003	28
2004	11
2005	6
2006	10
2007	10
2008	6
2009	13
2010	6
2011	7
2012	10
2013	11
2014	23
2015	30
2016	12
2017	18
2018	7
2019	6
2020	11
2021	14
2022	25

All-Time Record Progression

11 new records

11 all-time records were set at Malheur Branch Exp STN between 30 November 1975 and 19 January 2017. Each dot is a new record.

When Malheur Branch Exp STN set new all-time records
Date	Kind	Detail
1975-11-30	Record daily snowfall	Record daily snowfall 25.4 cm (10.0 in)
1976-01-07	Record snow depth	Record snow depth 25.4 cm (10.0 in)
1979-01-12	Record snow depth	Record snow depth 27.9 cm (11.0 in)
1979-01-15	Record snow depth	Record snow depth 38.1 cm (15.0 in)
1979-01-16	Record snow depth	Record snow depth 40.6 cm (16.0 in)
1979-01-25	Record snow depth	Record snow depth 43.2 cm (17.0 in)
1982-01-03	Record snow depth	Record snow depth 45.7 cm (18.0 in)
2003-07-23	Record high maximum temperature	Record high maximum temperature 43.3 C (109.9 F)
2015-06-30	Record high minimum temperature	Record high minimum temperature 25.0 C (77.0 F)
2017-01-09	Record snow depth	Record snow depth 48.3 cm (19.0 in)
2017-01-19	Record snow depth	Record snow depth 71.1 cm (28.0 in)

Wettest Day of Each Month

Sep: 38.6 mm (1.5 in)

The wettest day on record for each calendar month at Malheur Branch Exp STN. The most was 38.6 mm (1.5 in) on 14 September 1959.

Record daily precipitation for each month at Malheur Branch Exp STN
Month	Record daily precipitation (mm)	Date
Jan	23.4 mm (0.9 in)	19 January 2017
Feb	23.9 mm (0.9 in)	8 February 1953
Mar	34.8 mm (1.4 in)	4 March 1983
Apr	20.3 mm (0.8 in)	28 April 1951
May	26.9 mm (1.1 in)	22 May 1998
Jun	30.0 mm (1.2 in)	8 June 1947
Jul	23.6 mm (0.9 in)	5 July 1998
Aug	31.0 mm (1.2 in)	14 August 1979
Sep	38.6 mm (1.5 in)	14 September 1959
Oct	26.2 mm (1.0 in)	30 October 1982
Nov	18.3 mm (0.7 in)	25 November 1997
Dec	23.1 mm (0.9 in)	25 December 1980

Period of Record Coverage

1942 to 2022

81 years of record at Malheur Branch Exp STN, 1942 to 2022. 8 years have data for under 90 percent of days and are left out of rankings: 1942, 2001, 2002, 2013, 2014, 2015, 2017, 2018.

Days with data per year at Malheur Branch Exp STN
Year	Days with data	Share of year	Complete
1942	165	45%	No
1943	363	99%	Yes
1944	366	100%	Yes
1945	364	100%	Yes
1946	364	100%	Yes
1947	364	100%	Yes
1948	365	100%	Yes
1949	365	100%	Yes
1950	365	100%	Yes
1951	363	99%	Yes
1952	365	100%	Yes
1953	365	100%	Yes
1954	365	100%	Yes
1955	364	100%	Yes
1956	366	100%	Yes
1957	365	100%	Yes
1958	365	100%	Yes
1959	365	100%	Yes
1960	366	100%	Yes
1961	365	100%	Yes
1962	365	100%	Yes
1963	365	100%	Yes
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	364	100%	Yes
1978	365	100%	Yes
1979	365	100%	Yes
1980	366	100%	Yes
1981	365	100%	Yes
1982	364	100%	Yes
1983	364	100%	Yes
1984	366	100%	Yes
1985	365	100%	Yes
1986	365	100%	Yes
1987	365	100%	Yes
1988	363	99%	Yes
1989	365	100%	Yes
1990	364	100%	Yes
1991	364	100%	Yes
1992	361	99%	Yes
1993	364	100%	Yes
1994	333	91%	Yes
1995	334	92%	Yes
1996	366	100%	Yes
1997	365	100%	Yes
1998	364	100%	Yes
1999	365	100%	Yes
2000	366	100%	Yes
2001	304	83%	No
2002	307	84%	No
2003	365	100%	Yes
2004	366	100%	Yes
2005	365	100%	Yes
2006	365	100%	Yes
2007	365	100%	Yes
2008	366	100%	Yes
2009	363	99%	Yes
2010	365	100%	Yes
2011	355	97%	Yes
2012	335	92%	Yes
2013	191	52%	No
2014	266	73%	No
2015	308	84%	No
2016	330	90%	Yes
2017	307	84%	No
2018	317	87%	No
2019	354	97%	Yes
2020	358	98%	Yes
2021	347	95%	Yes
2022	337	92%	Yes

Latest Records

Latest records at Malheur Branch Exp STN
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
12 December 2022	Malheur Branch Exp STN, US	daily rain	14.0 mm (0.6 in)	0.5 mm (0.02 in)	39 years	20 of 100 (Routine)
12 November 2022	Malheur Branch Exp STN, US	daily low max	0.6 C (33.1 F)	1.1 C (2.0 F)	36 years	21 of 100 (Routine)
22 October 2022	Malheur Branch Exp STN, US	daily rain	7.6 mm (0.30 in)	0.7 mm (0.03 in)	4 years	10 of 100 (Routine)
29 September 2022	Malheur Branch Exp STN, US	daily high max (Tie)	32.2 C (90.0 F)	tie	59 years	6 of 100 (Routine)
8 September 2022	Malheur Branch Exp STN, US	daily high max	37.2 C (99.0 F)	1.6 C (2.9 F)	31 years	20 of 100 (Routine)
7 September 2022	Malheur Branch Exp STN, US	daily high max (Tie)	35.6 C (96.1 F)	tie	31 years	4 of 100 (Routine)
4 September 2022	Malheur Branch Exp STN, US	daily high max (Tie)	36.1 C (97.0 F)	tie	24 years	3 of 100 (Routine)
2 September 2022	Malheur Branch Exp STN, US	daily high max (Tie)	36.7 C (98.1 F)	tie	72 years	7 of 100 (Routine)
1 September 2022	Malheur Branch Exp STN, US	monthly high max (Tie)	37.8 C (100.0 F)	tie	72 years	9 of 100 (Routine)
1 September 2022	Malheur Branch Exp STN, US	daily high min (Tie)	16.7 C (62.1 F)	tie	4 years	2 of 100 (Routine)
27 August 2022	Malheur Branch Exp STN, US	daily high min	18.9 C (66.0 F)	2.2 C (4.0 F)	55 years	30 of 100 (Routine)
26 August 2022	Malheur Branch Exp STN, US	daily high min	18.3 C (64.9 F)	0.5 C (0.9 F)	64 years	28 of 100 (Routine)
24 August 2022	Malheur Branch Exp STN, US	daily high min	18.3 C (64.9 F)	0.5 C (0.9 F)	52 years	24 of 100 (Routine)
22 August 2022	Malheur Branch Exp STN, US	daily high max	37.2 C (99.0 F)	0.5 C (0.9 F)	52 years	24 of 100 (Routine)
18 August 2022	Malheur Branch Exp STN, US	daily high max	39.4 C (102.9 F)	0.5 C (0.9 F)	55 years	25 of 100 (Routine)
18 August 2022	Malheur Branch Exp STN, US	daily high min	19.4 C (66.9 F)	0.5 C (0.9 F)	40 years	21 of 100 (Routine)
14 August 2022	Malheur Branch Exp STN, US	daily high min	20.0 C (68.0 F)	1.1 C (2.0 F)	68 years	31 of 100 (Routine)
11 August 2022	Malheur Branch Exp STN, US	daily rain	6.1 mm (0.24 in)	4.1 mm (0.16 in)	69 years	20 of 100 (Routine)
10 August 2022	Malheur Branch Exp STN, US	daily high min	20.0 C (68.0 F)	0.6 C (1.1 F)	16 years	14 of 100 (Routine)
2 August 2022	Malheur Branch Exp STN, US	daily high max	41.1 C (106.0 F)	1.1 C (2.0 F)	60 years	28 of 100 (Routine)

Climate Trend

70 complete years, 1943 to 2022

One stripe for each of 70 complete years at Malheur Branch Exp STN, 1943 to 2022. Blue stripes are years cooler than the station's own mean of 10.5 C (50.9 F); red stripes are warmer. The coolest year was 1985, at 7.5 C (45.4 F), and the warmest was 2021, at 12.1 C (53.8 F). The strongest colour marks a difference of 3.1 C (5.6 F).

Annual mean temperature at Malheur Branch Exp STN as warming stripes, 1943 to 2022
Year	Annual mean temperature	Difference from the station mean
1943	10.6 C	+0.13 C
1944	10.0 C	-0.52 C
1945	10.6 C	+0.09 C
1946	10.7 C	+0.24 C
1947	11.0 C	+0.46 C
1948	10.0 C	-0.45 C
1949	9.9 C	-0.62 C
1950	10.3 C	-0.22 C
1951	10.2 C	-0.28 C
1952	10.3 C	-0.23 C
1953	11.2 C	+0.75 C
1954	10.6 C	+0.08 C
1955	9.1 C	-1.35 C
1956	10.3 C	-0.24 C
1957	10.1 C	-0.44 C
1958	11.4 C	+0.90 C
1959	10.7 C	+0.25 C
1960	10.6 C	+0.09 C
1961	11.2 C	+0.73 C
1962	10.1 C	-0.37 C
1963	11.1 C	+0.56 C
1964	9.2 C	-1.31 C
1965	10.5 C	-0.04 C
1966	11.5 C	+0.96 C
1967	11.4 C	+0.88 C
1968	10.9 C	+0.38 C
1969	10.8 C	+0.34 C
1970	10.8 C	+0.30 C
1971	10.7 C	+0.18 C
1972	10.2 C	-0.34 C
1973	11.4 C	+0.90 C
1974	11.1 C	+0.56 C
1975	9.9 C	-0.60 C
1976	9.6 C	-0.91 C
1977	10.5 C	0.00 C
1978	10.1 C	-0.41 C
1979	9.7 C	-0.75 C
1980	10.2 C	-0.31 C
1981	10.9 C	+0.38 C
1982	9.0 C	-1.49 C
1983	10.2 C	-0.27 C
1984	8.7 C	-1.80 C
1985	7.5 C	-3.04 C
1986	10.5 C	+0.02 C
1987	11.2 C	+0.73 C
1988	10.5 C	+0.03 C
1989	9.0 C	-1.54 C
1990	10.8 C	+0.31 C
1991	10.3 C	-0.23 C
1992	11.4 C	+0.92 C
1993	8.7 C	-1.78 C
1996	10.4 C	-0.14 C
1997	10.7 C	+0.21 C
1998	11.5 C	+0.98 C
1999	10.8 C	+0.26 C
2000	11.1 C	+0.64 C
2003	12.1 C	+1.59 C
2004	11.0 C	+0.55 C
2005	10.5 C	-0.01 C
2006	11.4 C	+0.95 C
2007	11.5 C	+1.02 C
2008	10.4 C	-0.14 C
2009	10.4 C	-0.05 C
2010	10.4 C	-0.13 C
2011	9.8 C	-0.73 C
2016	11.2 C	+0.69 C
2019	11.1 C	+0.60 C
2020	11.2 C	+0.74 C
2021	12.1 C	+1.60 C
2022	10.5 C	+0.03 C

The fitted trend in annual mean temperature here over 1943 to 2022 is 0.06 C (-0.02 to 0.15) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: 0.11 F (-0.04 to 0.27) per decade. The slope is a straight line fitted to 70 complete years; the brackets give its 95 percent interval.

Fitted temperature trends per decade at Malheur Branch Exp STN
Measure	Per decade (C)	Per decade (F)	Period	Complete years	Reading
Annual mean temperature	0.06 C (-0.02 to 0.15) per decade	0.11 F (-0.04 to 0.27) per decade	1943 to 2022	70	Not clearly different from zero
Mean daily maximum	0.06 C (-0.04 to 0.15) per decade	0.1 F (-0.1 to 0.3) per decade	1943 to 2022	70	Not clearly different from zero
Mean daily minimum	0.07 C (-0.02 to 0.16) per decade	0.12 F (-0.04 to 0.29) per decade	1943 to 2022	70	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

1942 to 2022

Yearly extremes at Malheur Branch Exp STN: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	43.3 C (109.9 F)	2003	38.9 C (102.0 F)	81
Coldest night (TNn)	-32.2 C (-26.0 F)	1962	-18.9 C (-2.0 F)	81
Wettest day (Rx1day)	38.6 mm (1.5 in)	1959	17.8 mm (0.7 in)	81
Wettest five days (Rx5day)	56.4 mm (2.2 in)	1996	29.6 mm (1.2 in)	81
Longest dry spell (CDD)	108 days	1957	52 days	81

Hottest day (TXx)

The hottest day of the year at Malheur Branch Exp STN, 1942 to 2022. The record is 43.3 C (109.9 F) in 2003, marked on the chart; the median year is 38.9 C (102.0 F).

Hottest day (TXx) at Malheur Branch Exp STN by year
Year	Hottest day (TXx)
1942	39.4 C (102.9 F)
1943	39.4 C (102.9 F)
1944	37.8 C (100.0 F)
1945	37.8 C (100.0 F)
1946	39.4 C (102.9 F)
1947	37.8 C (100.0 F)
1948	37.2 C (99.0 F)
1949	38.9 C (102.0 F)
1950	38.3 C (100.9 F)
1951	38.9 C (102.0 F)
1952	40.0 C (104.0 F)
1953	41.1 C (106.0 F)
1954	37.8 C (100.0 F)
1955	39.4 C (102.9 F)
1956	37.8 C (100.0 F)
1957	36.1 C (97.0 F)
1958	36.7 C (98.1 F)
1959	40.6 C (105.1 F)
1960	41.1 C (106.0 F)
1961	42.2 C (108.0 F)
1962	38.9 C (102.0 F)
1963	37.8 C (100.0 F)
1964	37.8 C (100.0 F)
1965	37.2 C (99.0 F)
1966	38.3 C (100.9 F)
1967	40.6 C (105.1 F)
1968	39.4 C (102.9 F)
1969	38.9 C (102.0 F)
1970	38.3 C (100.9 F)
1971	40.0 C (104.0 F)
1972	40.0 C (104.0 F)
1973	40.6 C (105.1 F)
1974	38.9 C (102.0 F)
1975	38.9 C (102.0 F)
1976	39.4 C (102.9 F)
1977	40.0 C (104.0 F)
1978	38.9 C (102.0 F)
1979	40.0 C (104.0 F)
1980	38.9 C (102.0 F)
1981	38.3 C (100.9 F)
1982	37.2 C (99.0 F)
1983	40.0 C (104.0 F)
1984	39.4 C (102.9 F)
1985	38.9 C (102.0 F)
1986	38.3 C (100.9 F)
1987	37.2 C (99.0 F)
1988	38.9 C (102.0 F)
1989	39.4 C (102.9 F)
1990	41.1 C (106.0 F)
1991	37.2 C (99.0 F)
1992	40.6 C (105.1 F)
1993	35.0 C (95.0 F)
1994	41.1 C (106.0 F)
1995	37.8 C (100.0 F)
1996	39.4 C (102.9 F)
1997	38.9 C (102.0 F)
1998	40.6 C (105.1 F)
1999	40.0 C (104.0 F)
2000	38.9 C (102.0 F)
2001	39.4 C (102.9 F)
2002	41.7 C (107.1 F)
2003	43.3 C (109.9 F)
2004	40.0 C (104.0 F)
2005	38.3 C (100.9 F)
2006	41.1 C (106.0 F)
2007	40.6 C (105.1 F)
2008	37.8 C (100.0 F)
2009	38.9 C (102.0 F)
2010	37.8 C (100.0 F)
2011	37.2 C (99.0 F)
2012	38.9 C (102.0 F)
2013	41.7 C (107.1 F)
2014	40.6 C (105.1 F)
2015	41.1 C (106.0 F)
2016	38.9 C (102.0 F)
2017	38.9 C (102.0 F)
2018	40.6 C (105.1 F)
2019	37.8 C (100.0 F)
2020	40.0 C (104.0 F)
2021	40.0 C (104.0 F)
2022	41.7 C (107.1 F)

Coldest night (TNn)

The coldest night of the year at Malheur Branch Exp STN, 1942 to 2022. The record is -32.2 C (-26.0 F) in 1962, marked on the chart; the median year is -18.9 C (-2.0 F).

Coldest night (TNn) at Malheur Branch Exp STN by year
Year	Coldest night (TNn)
1942	-10.0 C (14.0 F)
1943	-20.6 C (-5.1 F)
1944	-19.4 C (-2.9 F)
1945	-18.3 C (-0.9 F)
1946	-11.7 C (10.9 F)
1947	-20.6 C (-5.1 F)
1948	-21.1 C (-6.0 F)
1949	-27.2 C (-17.0 F)
1950	-27.2 C (-17.0 F)
1951	-18.9 C (-2.0 F)
1952	-18.9 C (-2.0 F)
1953	-8.9 C (16.0 F)
1954	-15.0 C (5.0 F)
1955	-18.9 C (-2.0 F)
1956	-25.6 C (-14.1 F)
1957	-30.0 C (-22.0 F)
1958	-13.3 C (8.1 F)
1959	-19.4 C (-2.9 F)
1960	-16.7 C (1.9 F)
1961	-16.1 C (3.0 F)
1962	-32.2 C (-26.0 F)
1963	-20.6 C (-5.1 F)
1964	-23.3 C (-9.9 F)
1965	-16.7 C (1.9 F)
1966	-12.2 C (10.0 F)
1967	-18.9 C (-2.0 F)
1968	-16.1 C (3.0 F)
1969	-13.9 C (7.0 F)
1970	-15.0 C (5.0 F)
1971	-15.0 C (5.0 F)
1972	-29.4 C (-20.9 F)
1973	-12.2 C (10.0 F)
1974	-23.9 C (-11.0 F)
1975	-22.2 C (-8.0 F)
1976	-20.6 C (-5.1 F)
1977	-25.0 C (-13.0 F)
1978	-21.7 C (-7.1 F)
1979	-31.1 C (-24.0 F)
1980	-20.6 C (-5.1 F)
1981	-17.8 C (0.0 F)
1982	-25.6 C (-14.1 F)
1983	-23.3 C (-9.9 F)
1984	-23.9 C (-11.0 F)
1985	-27.2 C (-17.0 F)
1986	-18.9 C (-2.0 F)
1987	-16.7 C (1.9 F)
1988	-21.1 C (-6.0 F)
1989	-31.1 C (-24.0 F)
1990	-29.4 C (-20.9 F)
1991	-19.4 C (-2.9 F)
1992	-23.9 C (-11.0 F)
1993	-19.4 C (-2.9 F)
1994	-18.3 C (-0.9 F)
1995	-17.8 C (0.0 F)
1996	-16.7 C (1.9 F)
1997	-14.4 C (6.1 F)
1998	-18.9 C (-2.0 F)
1999	-10.0 C (14.0 F)
2000	-13.3 C (8.1 F)
2001	-12.2 C (10.0 F)
2002	-10.6 C (12.9 F)
2003	-9.4 C (15.1 F)
2004	-18.3 C (-0.9 F)
2005	-18.9 C (-2.0 F)
2006	-12.2 C (10.0 F)
2007	-14.4 C (6.1 F)
2008	-20.0 C (-4.0 F)
2009	-18.9 C (-2.0 F)
2010	-13.9 C (7.0 F)
2011	-17.2 C (1.0 F)
2012	-15.6 C (3.9 F)
2013	-23.9 C (-11.0 F)
2014	-21.1 C (-6.0 F)
2015	-16.1 C (3.0 F)
2016	-22.8 C (-9.0 F)
2017	-30.0 C (-22.0 F)
2018	-12.2 C (10.0 F)
2019	-12.2 C (10.0 F)
2020	-10.6 C (12.9 F)
2021	-15.0 C (5.0 F)
2022	-19.4 C (-2.9 F)

Wettest day (Rx1day)

The wettest day of the year at Malheur Branch Exp STN, 1942 to 2022. The record is 38.6 mm (1.5 in) in 1959, marked on the chart; the median year is 17.8 mm (0.7 in).

Wettest day (Rx1day) at Malheur Branch Exp STN by year
Year	Wettest day (Rx1day)
1942	17.8 mm (0.7 in)
1943	25.4 mm (1.0 in)
1944	17.8 mm (0.7 in)
1945	23.6 mm (0.9 in)
1946	10.7 mm (0.4 in)
1947	30.0 mm (1.2 in)
1948	13.2 mm (0.5 in)
1949	15.2 mm (0.6 in)
1950	14.2 mm (0.6 in)
1951	20.3 mm (0.8 in)
1952	16.3 mm (0.6 in)
1953	23.9 mm (0.9 in)
1954	16.8 mm (0.7 in)
1955	17.8 mm (0.7 in)
1956	14.2 mm (0.6 in)
1957	22.4 mm (0.9 in)
1958	20.1 mm (0.8 in)
1959	38.6 mm (1.5 in)
1960	18.5 mm (0.7 in)
1961	15.2 mm (0.6 in)
1962	17.0 mm (0.7 in)
1963	17.0 mm (0.7 in)
1964	17.0 mm (0.7 in)
1965	23.9 mm (0.9 in)
1966	10.7 mm (0.4 in)
1967	17.5 mm (0.7 in)
1968	22.6 mm (0.9 in)
1969	21.8 mm (0.9 in)
1970	19.1 mm (0.8 in)
1971	16.5 mm (0.6 in)
1972	20.8 mm (0.8 in)
1973	13.2 mm (0.5 in)
1974	9.4 mm (0.37 in)
1975	17.8 mm (0.7 in)
1976	20.6 mm (0.8 in)
1977	17.3 mm (0.7 in)
1978	20.1 mm (0.8 in)
1979	31.0 mm (1.2 in)
1980	23.1 mm (0.9 in)
1981	18.8 mm (0.7 in)
1982	26.2 mm (1.0 in)
1983	34.8 mm (1.4 in)
1984	10.7 mm (0.4 in)
1985	13.7 mm (0.5 in)
1986	19.8 mm (0.8 in)
1987	15.5 mm (0.6 in)
1988	14.2 mm (0.6 in)
1989	14.7 mm (0.6 in)
1990	16.3 mm (0.6 in)
1991	19.3 mm (0.8 in)
1992	22.6 mm (0.9 in)
1993	15.2 mm (0.6 in)
1994	11.4 mm (0.4 in)
1995	14.5 mm (0.6 in)
1996	20.1 mm (0.8 in)
1997	19.3 mm (0.8 in)
1998	26.9 mm (1.1 in)
1999	16.0 mm (0.6 in)
2000	13.7 mm (0.5 in)
2001	10.9 mm (0.4 in)
2002	14.5 mm (0.6 in)
2003	12.7 mm (0.5 in)
2004	14.5 mm (0.6 in)
2005	25.9 mm (1.0 in)
2006	18.8 mm (0.7 in)
2007	14.5 mm (0.6 in)
2008	21.8 mm (0.9 in)
2009	18.5 mm (0.7 in)
2010	21.1 mm (0.8 in)
2011	22.6 mm (0.9 in)
2012	10.4 mm (0.4 in)
2013	9.4 mm (0.37 in)
2014	15.5 mm (0.6 in)
2015	10.9 mm (0.4 in)
2016	12.2 mm (0.5 in)
2017	23.4 mm (0.9 in)
2018	16.8 mm (0.7 in)
2019	24.1 mm (0.9 in)
2020	23.6 mm (0.9 in)
2021	21.1 mm (0.8 in)
2022	14.5 mm (0.6 in)

Wettest five days (Rx5day)

The wettest five days of the year at Malheur Branch Exp STN, 1942 to 2022. The record is 56.4 mm (2.2 in) in 1996, marked on the chart; the median year is 29.6 mm (1.2 in).

Wettest five days (Rx5day) at Malheur Branch Exp STN by year
Year	Wettest five days (Rx5day)
1942	27.4 mm (1.1 in)
1943	38.4 mm (1.5 in)
1944	37.4 mm (1.5 in)
1945	32.3 mm (1.3 in)
1946	18.3 mm (0.7 in)
1947	34.9 mm (1.4 in)
1948	21.7 mm (0.9 in)
1949	26.4 mm (1.0 in)
1950	22.9 mm (0.9 in)
1951	31.0 mm (1.2 in)
1952	20.9 mm (0.8 in)
1953	40.6 mm (1.6 in)
1954	24.4 mm (1.0 in)
1955	23.9 mm (0.9 in)
1956	39.1 mm (1.5 in)
1957	29.0 mm (1.1 in)
1958	35.3 mm (1.4 in)
1959	50.8 mm (2.0 in)
1960	30.2 mm (1.2 in)
1961	21.6 mm (0.9 in)
1962	43.7 mm (1.7 in)
1963	29.0 mm (1.1 in)
1964	28.5 mm (1.1 in)
1965	29.0 mm (1.1 in)
1966	22.6 mm (0.9 in)
1967	29.6 mm (1.2 in)
1968	38.3 mm (1.5 in)
1969	41.7 mm (1.6 in)
1970	32.0 mm (1.3 in)
1971	33.8 mm (1.3 in)
1972	38.0 mm (1.5 in)
1973	22.0 mm (0.9 in)
1974	20.0 mm (0.8 in)
1975	32.8 mm (1.3 in)
1976	30.5 mm (1.2 in)
1977	37.8 mm (1.5 in)
1978	30.3 mm (1.2 in)
1979	35.6 mm (1.4 in)
1980	35.9 mm (1.4 in)
1981	39.2 mm (1.5 in)
1982	48.5 mm (1.9 in)
1983	46.3 mm (1.8 in)
1984	27.5 mm (1.1 in)
1985	18.0 mm (0.7 in)
1986	27.3 mm (1.1 in)
1987	26.0 mm (1.0 in)
1988	22.0 mm (0.9 in)
1989	26.2 mm (1.0 in)
1990	28.4 mm (1.1 in)
1991	31.7 mm (1.2 in)
1992	30.5 mm (1.2 in)
1993	36.0 mm (1.4 in)
1994	22.1 mm (0.9 in)
1995	28.1 mm (1.1 in)
1996	56.4 mm (2.2 in)
1997	31.2 mm (1.2 in)
1998	56.4 mm (2.2 in)
1999	23.8 mm (0.9 in)
2000	27.2 mm (1.1 in)
2001	21.7 mm (0.9 in)
2002	26.0 mm (1.0 in)
2003	22.2 mm (0.9 in)
2004	29.0 mm (1.1 in)
2005	50.0 mm (2.0 in)
2006	51.3 mm (2.0 in)
2007	20.6 mm (0.8 in)
2008	31.8 mm (1.3 in)
2009	33.8 mm (1.3 in)
2010	34.8 mm (1.4 in)
2011	31.8 mm (1.3 in)
2012	25.9 mm (1.0 in)
2013	12.5 mm (0.5 in)
2014	20.8 mm (0.8 in)
2015	24.4 mm (1.0 in)
2016	23.1 mm (0.9 in)
2017	37.0 mm (1.5 in)
2018	22.0 mm (0.9 in)
2019	45.4 mm (1.8 in)
2020	37.4 mm (1.5 in)
2021	24.9 mm (1.0 in)
2022	25.2 mm (1.0 in)

Longest dry spell (CDD)

The longest dry spell of the year at Malheur Branch Exp STN, 1942 to 2022. The record is 108 days in 1957, marked on the chart; the median year is 52 days.

Longest dry spell (CDD) at Malheur Branch Exp STN by year
Year	Longest dry spell (CDD)
1942	30 days
1943	36 days
1944	74 days
1945	43 days
1946	56 days
1947	66 days
1948	52 days
1949	107 days
1950	51 days
1951	59 days
1952	67 days
1953	68 days
1954	64 days
1955	56 days
1956	62 days
1957	108 days
1958	54 days
1959	53 days
1960	45 days
1961	50 days
1962	70 days
1963	51 days
1964	42 days
1965	36 days
1966	77 days
1967	81 days
1968	51 days
1969	81 days
1970	33 days
1971	66 days
1972	40 days
1973	93 days
1974	89 days
1975	43 days
1976	38 days
1977	57 days
1978	78 days
1979	46 days
1980	65 days
1981	43 days
1982	33 days
1983	36 days
1984	55 days
1985	54 days
1986	42 days
1987	78 days
1988	82 days
1989	36 days
1990	53 days
1991	53 days
1992	65 days
1993	51 days
1994	58 days
1995	28 days
1996	34 days
1997	40 days
1998	59 days
1999	76 days
2000	52 days
2001	31 days
2002	33 days
2003	60 days
2004	29 days
2005	43 days
2006	47 days
2007	69 days
2008	58 days
2009	34 days
2010	37 days
2011	61 days
2012	54 days
2013	27 days
2014	38 days
2015	35 days
2016	34 days
2017	49 days
2018	48 days
2019	33 days
2020	86 days
2021	38 days
2022	71 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

70 years with a frost

Across 70 years with a frost, the median last spring frost at Malheur Branch Exp STN falls on 3 May and the median first autumn frost on 5 October, which leaves a median of 155 days between them.

In 1983 to 2022 the median growing season was 158 days. That is 10 days more than in 1943 to 1972.

Fitted over all years, the growing season changes by +2.5 days per decade at this station.

Frost dates and growing season at Malheur Branch Exp STN
Measure	Median, all years	Earliest period (1943 to 1972)	Recent period (1983 to 2022)	Recent against earliest	Fitted trend
Last spring frost	3 May	4 May	3 May	1 day earlier	-1.3 days per decade
First autumn frost	5 October	3 October	11 October	8 days later	+1.2 days per decade
Growing days	155 days	148 days	158 days	10 days more	+2.5 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

73 years, 1943 to 2022

A day with at least 18.0 mm (0.7 in) of rain is expected about once in 2 years. A day with at least 35.6 mm (1.4 in) of rain is expected about once in 100 years.

Rainfall return levels at Malheur 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	18.0 mm (0.7 in)
5 years	22.9 mm (0.9 in)
10 years	26.1 mm (1.0 in)
25 years	30.0 mm (1.2 in)
50 years	32.9 mm (1.3 in)
100 years	35.6 mm (1.4 in)	Longer than the 73 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, 73 years of values from 1943 to 2022.

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: 38.6 mm (1.5 in) in 1959; 34.8 mm (1.4 in) in 1983; 31.0 mm (1.2 in) in 1979.

Station Changes

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

Climate Twins

2000 to 2022 against 1961 to 1990

Over 2000 to 2022, Malheur Branch Exp STN had a mean temperature of 11.0 C (51.8 F) and 266.0 mm (10.5 in) of rain a year. The 3 stations whose 1961 to 1990 climate was closest to that are Glenns Ferry (United States, 179 km away), Fruitland (United States, 1,089 km away) and Bruneau (United States, 157 km away).

Climate twins of Malheur Branch Exp STN: stations whose 1961 to 1990 climate is closest to its 2000 to 2022 climate
Twin station	Country	Distance away	Mean temperature, 1961-1990	Rain a year, 1961-1990	Climate difference
Glenns Ferry	United States	179 km (111 mi)	11.0 C (51.7 F)	262.4 mm (10.3 in)	0.64
Fruitland	United States	1,089 km (677 mi)	11.2 C (52.2 F)	211.2 mm (8.3 in)	0.74
Bruneau	United States	157 km (98 mi)	11.3 C (52.4 F)	184.0 mm (7.2 in)	0.74

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 Malheur Branch Exp STN standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Malheur 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 2025-12-31. Last revised 31 December 2025 (2025-12-31).