Monroe Weather Records (USC00455525)

Record envelope, standing records and threshold days for Monroe (USC00455525), Washington, United States, with 98 years of record.

Key Facts for Monroe

Monroe (USC00455525) is a weather station in Washington, United States at 47.84 latitude and -122.00 longitude, 38 m (125 ft) above sea level.
The station reports from 1929 to 2026, 98 years of record.
1,464 records set at Monroe still stand.
Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
Monroe set a daily record precipitation of 19.1 mm (0.8 in) on 13 September 2026 (provisional).

Provisional Records

Records set in the last 60 days are provisional until they clear the revision window.

About the Station

Location: Washington, United States, 47.84 latitude, -122.00 longitude.
Elevation: 38 m (125 ft).
Period of record: 1929 to 2026, 98 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 Monroe. 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 Monroe, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	22.2 C (72.0 F)	-19.4 C (-2.9 F)	14.4 C (57.9 F)	-6.1 C (21.0 F)
Feb	23.9 C (75.0 F)	-18.9 C (-2.0 F)	16.7 C (62.1 F)	-3.9 C (25.0 F)
Mar	26.1 C (79.0 F)	-11.1 C (12.0 F)	16.7 C (62.1 F)	-0.6 C (30.9 F)
Apr	31.1 C (88.0 F)	-5.0 C (23.0 F)	23.9 C (75.0 F)	0.0 C (32.0 F)
May	34.4 C (93.9 F)	-1.7 C (28.9 F)	30.0 C (86.0 F)	4.4 C (39.9 F)
Jun	37.8 C (100.0 F)	1.1 C (34.0 F)	31.7 C (89.1 F)	6.1 C (43.0 F)
Jul	38.9 C (102.0 F)	0.6 C (33.1 F)	33.3 C (91.9 F)	8.3 C (46.9 F)
Aug	38.3 C (100.9 F)	1.7 C (35.1 F)	32.2 C (90.0 F)	8.9 C (48.0 F)
Sep	36.1 C (97.0 F)	-1.1 C (30.0 F)	26.7 C (80.1 F)	4.4 C (39.9 F)
Oct	31.1 C (88.0 F)	-6.1 C (21.0 F)	22.2 C (72.0 F)	2.8 C (37.0 F)
Nov	25.0 C (77.0 F)	-17.2 C (1.0 F)	n/a	n/a
Dec	18.9 C (66.0 F)	-17.2 C (1.0 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Monroe still stand. 1935 holds the most, with 43.

Standing records at Monroe by the year they were set
Year set	Standing records
1929	13
1930	19
1931	23
1932	23
1933	19
1934	32
1935	43
1936	19
1937	25
1938	7
1939	24
1940	20
1941	26
1942	22
1943	10
1944	18
1945	7
1946	11
1947	18
1948	5
1949	18
1950	38
1951	16
1952	18
1953	16
1954	14
1955	25
1956	18
1957	15
1958	40
1959	12
1960	11
1961	12
1962	19
1963	18
1964	19
1965	18
1966	14
1967	5
1968	18
1969	16
1970	15
1971	14
1972	22
1973	14
1974	6
1975	10
1976	9
1977	13
1978	8
1979	10
1980	20
1981	16
1982	13
1983	11
1984	12
1985	26
1986	22
1987	10
1988	12
1989	12
1990	21
1991	8
1992	17
1993	8
1994	6
1995	10
1996	19
1997	5
1998	21
1999	11
2000	2
2001	1
2002	5
2003	11
2004	13
2005	10
2006	9
2007	6
2008	22
2009	12
2010	17
2011	14
2012	11
2013	9
2014	17
2015	8
2016	7
2017	15
2018	9
2019	9
2020	14
2021	18
2022	15
2023	11
2024	12
2025	18
2026	4

All-Time Record Progression

5 new records

5 all-time records were set at Monroe between 25 December 1967 and 29 July 2009. Each dot is a new record.

When Monroe set new all-time records
Date	Kind	Detail
1967-12-25	Record daily precipitation	Record daily precipitation 68.3 mm (2.7 in)
1972-01-25	Record daily snowfall	Record daily snowfall 30.5 cm (12.0 in)
1984-02-22	Record daily precipitation	Record daily precipitation 162.3 mm (6.4 in)
2008-12-22	Record snow depth	Record snow depth 55.9 cm (22.0 in)
2009-07-29	Record high maximum temperature	Record high maximum temperature 38.9 C (102.0 F)

Wettest Day of Each Month

Feb: 162.3 mm (6.4 in)

The wettest day on record for each calendar month at Monroe. The most was 162.3 mm (6.4 in) on 22 February 1984.

Record daily precipitation for each month at Monroe
Month	Record daily precipitation (mm)	Date
Jan	99.6 mm (3.9 in)	18 January 1986
Feb	162.3 mm (6.4 in)	22 February 1984
Mar	52.3 mm (2.1 in)	26 March 1988
Apr	48.0 mm (1.9 in)	23 April 1996
May	40.1 mm (1.6 in)	28 May 2006
Jun	64.8 mm (2.6 in)	7 June 1985
Jul	41.1 mm (1.6 in)	1 July 1954
Aug	49.3 mm (1.9 in)	27 August 1980
Sep	55.9 mm (2.2 in)	5 September 1931
Oct	79.2 mm (3.1 in)	20 October 2003
Nov	63.5 mm (2.5 in)	25 November 1962
Dec	100.1 mm (3.9 in)	3 December 2007

Period of Record Coverage

1929 to 2026

98 years of record at Monroe, 1929 to 2026. 13 years have data for under 90 percent of days and are left out of rankings: 1929, 1933, 1936, 1942, 1947, 1948, 1988, 1997 and others.

Days with data per year at Monroe
Year	Days with data	Share of year	Complete
1929	312	85%	No
1930	364	100%	Yes
1931	348	95%	Yes
1932	349	95%	Yes
1933	328	90%	No
1934	335	92%	Yes
1935	361	99%	Yes
1936	197	54%	No
1937	332	91%	Yes
1938	361	99%	Yes
1939	363	99%	Yes
1940	362	99%	Yes
1941	359	98%	Yes
1942	325	89%	No
1943	354	97%	Yes
1944	361	99%	Yes
1945	360	99%	Yes
1946	343	94%	Yes
1947	314	86%	No
1948	212	58%	No
1949	363	99%	Yes
1950	360	99%	Yes
1951	365	100%	Yes
1952	365	100%	Yes
1953	358	98%	Yes
1954	359	98%	Yes
1955	359	98%	Yes
1956	361	99%	Yes
1957	352	96%	Yes
1958	351	96%	Yes
1959	356	98%	Yes
1960	364	99%	Yes
1961	362	99%	Yes
1962	362	99%	Yes
1963	362	99%	Yes
1964	365	100%	Yes
1965	333	91%	Yes
1966	363	99%	Yes
1967	365	100%	Yes
1968	334	91%	Yes
1969	365	100%	Yes
1970	364	100%	Yes
1971	365	100%	Yes
1972	365	100%	Yes
1973	334	92%	Yes
1974	363	99%	Yes
1975	363	99%	Yes
1976	366	100%	Yes
1977	363	99%	Yes
1978	365	100%	Yes
1979	364	100%	Yes
1980	334	91%	Yes
1981	363	99%	Yes
1982	345	95%	Yes
1983	355	97%	Yes
1984	360	98%	Yes
1985	362	99%	Yes
1986	362	99%	Yes
1987	356	98%	Yes
1988	299	82%	No
1989	362	99%	Yes
1990	364	100%	Yes
1991	352	96%	Yes
1992	365	100%	Yes
1993	361	99%	Yes
1994	365	100%	Yes
1995	332	91%	Yes
1996	362	99%	Yes
1997	271	74%	No
1998	297	81%	No
1999	364	100%	Yes
2000	364	99%	Yes
2001	168	46%	No
2002	162	44%	No
2003	363	99%	Yes
2004	362	99%	Yes
2005	330	90%	Yes
2006	364	100%	Yes
2007	365	100%	Yes
2008	330	90%	Yes
2009	297	81%	No
2010	361	99%	Yes
2011	364	100%	Yes
2012	352	96%	Yes
2013	358	98%	Yes
2014	365	100%	Yes
2015	365	100%	Yes
2016	366	100%	Yes
2017	365	100%	Yes
2018	363	99%	Yes
2019	363	99%	Yes
2020	364	99%	Yes
2021	358	98%	Yes
2022	364	100%	Yes
2023	365	100%	Yes
2024	362	99%	Yes
2025	363	99%	Yes
2026	282	77%	No

Latest Records

Latest records at Monroe
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
13 September 2026	Monroe, US	daily rain (Provisional)	19.1 mm (0.8 in)	1.8 mm (0.07 in)	21 years	17 of 100 (Routine)
26 August 2026	Monroe, US	daily high max (Provisional)	32.2 C (90.0 F)	0.5 C (0.9 F)	92 years	37 of 100 (Notable)
23 July 2026	Monroe, US	daily high min	17.8 C (64.0 F)	0.6 C (1.1 F)	28 years	19 of 100 (Routine)
21 July 2026	Monroe, US	daily high min (Tie)	16.7 C (62.1 F)	tie	33 years	4 of 100 (Routine)
24 June 2026	Monroe, US	daily high min (Tie)	14.4 C (57.9 F)	tie	21 years	3 of 100 (Routine)
15 June 2026	Monroe, US	daily high max	31.7 C (89.1 F)	2.3 C (4.1 F)	96 years	42 of 100 (Notable)
14 June 2026	Monroe, US	daily high max (Tie)	30.6 C (87.1 F)	tie	40 years	5 of 100 (Routine)
9 June 2026	Monroe, US	daily rain	25.4 mm (1.0 in)	4.3 mm (0.17 in)	4 years	16 of 100 (Routine)
13 May 2026	Monroe, US	daily rain	20.3 mm (0.8 in)	4.0 mm (0.16 in)	73 years	20 of 100 (Routine)
12 May 2026	Monroe, US	daily high max	30.0 C (86.0 F)	0.6 C (1.1 F)	55 years	26 of 100 (Routine)
5 May 2026	Monroe, US	daily high min (Tie)	11.7 C (53.1 F)	tie	20 years	3 of 100 (Routine)
22 April 2026	Monroe, US	daily rain	24.9 mm (1.0 in)	6.1 mm (0.24 in)	5 years	19 of 100 (Routine)
17 March 2026	Monroe, US	daily high min	8.3 C (46.9 F)	0.5 C (0.9 F)	64 years	29 of 100 (Routine)
4 March 2026	Monroe, US	daily rain	27.7 mm (1.1 in)	4.8 mm (0.19 in)	85 years	41 of 100 (Notable)
13 January 2026	Monroe, US	daily high max (Tie)	14.4 C (57.9 F)	tie	40 years	5 of 100 (Routine)
13 January 2026	Monroe, US	daily high min (Tie)	9.4 C (48.9 F)	tie	35 years	4 of 100 (Routine)
17 December 2025	Monroe, US	daily high max (Tie)	12.8 C (55.0 F)	tie	83 years	8 of 100 (Routine)
16 December 2025	Monroe, US	daily high max	15.6 C (60.1 F)	1.2 C (2.2 F)	84 years	37 of 100 (Notable)
16 December 2025	Monroe, US	daily high min (Tie)	8.9 C (48.0 F)	tie	59 years	6 of 100 (Routine)
15 December 2025	Monroe, US	daily high min (Tie)	10.6 C (51.1 F)	tie	44 years	5 of 100 (Routine)

Climate Trend

74 complete years, 1930 to 2025

One stripe for each of 74 complete years at Monroe, 1930 to 2025. Blue stripes are years cooler than the station's own mean of 10.7 C (51.2 F); red stripes are warmer. The coolest year was 2011, at 8.9 C (48.0 F), and the warmest was 1958, at 13.0 C (55.3 F). The strongest colour marks a difference of 2.3 C (4.1 F).

Annual mean temperature at Monroe as warming stripes, 1930 to 2025
Year	Annual mean temperature	Difference from the station mean
1930	10.3 C	-0.42 C
1931	11.1 C	+0.40 C
1932	10.3 C	-0.37 C
1933	10.2 C	-0.48 C
1934	11.7 C	+1.06 C
1935	9.8 C	-0.85 C
1938	10.4 C	-0.28 C
1939	10.7 C	+0.04 C
1940	11.5 C	+0.78 C
1941	12.0 C	+1.30 C
1943	10.5 C	-0.20 C
1944	11.0 C	+0.31 C
1945	10.7 C	+0.04 C
1946	10.5 C	-0.20 C
1949	10.1 C	-0.58 C
1950	9.9 C	-0.82 C
1951	10.3 C	-0.33 C
1952	10.8 C	+0.14 C
1953	11.6 C	+0.97 C
1954	10.4 C	-0.26 C
1955	9.5 C	-1.18 C
1956	10.4 C	-0.26 C
1957	10.7 C	+0.04 C
1958	13.0 C	+2.29 C
1959	11.0 C	+0.33 C
1960	10.8 C	+0.15 C
1961	11.4 C	+0.76 C
1962	11.0 C	+0.30 C
1963	11.2 C	+0.54 C
1964	9.8 C	-0.92 C
1966	10.8 C	+0.13 C
1967	11.1 C	+0.43 C
1969	10.3 C	-0.41 C
1970	10.1 C	-0.56 C
1971	9.9 C	-0.82 C
1972	9.9 C	-0.81 C
1974	10.7 C	+0.04 C
1975	10.2 C	-0.48 C
1976	10.4 C	-0.28 C
1977	10.5 C	-0.15 C
1978	10.8 C	+0.14 C
1979	10.9 C	+0.22 C
1981	11.5 C	+0.81 C
1982	10.4 C	-0.27 C
1983	11.0 C	+0.37 C
1984	10.7 C	+0.02 C
1985	9.5 C	-1.20 C
1986	11.3 C	+0.67 C
1987	11.5 C	+0.86 C
1989	10.5 C	-0.20 C
1990	10.8 C	+0.15 C
1992	11.5 C	+0.81 C
1993	10.4 C	-0.25 C
1994	11.2 C	+0.49 C
1996	10.5 C	-0.19 C
1999	10.7 C	-0.02 C
2000	10.9 C	+0.26 C
2003	11.3 C	+0.64 C
2004	11.8 C	+1.09 C
2006	10.9 C	+0.18 C
2007	10.1 C	-0.55 C
2010	10.1 C	-0.53 C
2011	8.9 C	-1.77 C
2013	9.8 C	-0.84 C
2014	10.6 C	-0.09 C
2015	11.1 C	+0.38 C
2016	10.6 C	-0.05 C
2017	9.7 C	-1.00 C
2018	10.2 C	-0.47 C
2020	10.0 C	-0.71 C
2022	10.0 C	-0.72 C
2023	11.5 C	+0.79 C
2024	11.5 C	+0.86 C
2025	11.7 C	+1.00 C

The fitted trend in annual mean temperature here over 1930 to 2025 is -0.01 C (-0.07 to 0.05) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: -0.02 F (-0.12 to 0.08) per decade. The slope is a straight line fitted to 74 complete years; the brackets give its 95 percent interval.

Fitted temperature trends per decade at Monroe
Measure	Per decade (C)	Per decade (F)	Period	Complete years	Reading
Annual mean temperature	-0.01 C (-0.07 to 0.05) per decade	-0.02 F (-0.12 to 0.08) per decade	1930 to 2025	74	Not clearly different from zero
Mean daily maximum	-0.07 C (-0.14 to 0.00) per decade	-0.13 F (-0.26 to -0.01) per decade	1930 to 2025	74	Fall
Mean daily minimum	0.05 C (0.00 to 0.10) per decade	0.09 F (-0.01 to 0.18) per decade	1930 to 2025	74	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

1929 to 2026

Yearly extremes at Monroe: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	38.9 C (102.0 F)	2009	33.3 C (91.9 F)	98
Coldest night (TNn)	-19.4 C (-2.9 F)	1950	-10.0 C (14.0 F)	98
Wettest day (Rx1day)	162.3 mm (6.4 in)	1984	45.6 mm (1.8 in)	98
Wettest five days (Rx5day)	199.1 mm (7.8 in)	1984	93.5 mm (3.7 in)	98
Longest dry spell (CDD)	56 days	2026	23 days	98

Hottest day (TXx)

The hottest day of the year at Monroe, 1929 to 2026. The record is 38.9 C (102.0 F) in 2009, marked on the chart; the median year is 33.3 C (91.9 F).

Hottest day (TXx) at Monroe by year
Year	Hottest day (TXx)
1929	31.1 C (88.0 F)
1930	31.7 C (89.1 F)
1931	38.3 C (100.9 F)
1932	32.8 C (91.0 F)
1933	32.2 C (90.0 F)
1934	32.2 C (90.0 F)
1935	32.8 C (91.0 F)
1936	28.9 C (84.0 F)
1937	31.1 C (88.0 F)
1938	31.7 C (89.1 F)
1939	33.3 C (91.9 F)
1940	33.9 C (93.0 F)
1941	36.1 C (97.0 F)
1942	36.7 C (98.1 F)
1943	30.0 C (86.0 F)
1944	34.4 C (93.9 F)
1945	30.6 C (87.1 F)
1946	30.6 C (87.1 F)
1947	31.7 C (89.1 F)
1948	31.1 C (88.0 F)
1949	30.0 C (86.0 F)
1950	31.7 C (89.1 F)
1951	34.4 C (93.9 F)
1952	36.1 C (97.0 F)
1953	33.3 C (91.9 F)
1954	28.9 C (84.0 F)
1955	35.0 C (95.0 F)
1956	33.9 C (93.0 F)
1957	29.4 C (84.9 F)
1958	37.2 C (99.0 F)
1959	35.0 C (95.0 F)
1960	37.8 C (100.0 F)
1961	36.7 C (98.1 F)
1962	31.7 C (89.1 F)
1963	34.4 C (93.9 F)
1964	31.1 C (88.0 F)
1965	33.3 C (91.9 F)
1966	31.1 C (88.0 F)
1967	34.4 C (93.9 F)
1968	31.7 C (89.1 F)
1969	33.3 C (91.9 F)
1970	33.9 C (93.0 F)
1971	33.3 C (91.9 F)
1972	32.2 C (90.0 F)
1973	33.9 C (93.0 F)
1974	32.2 C (90.0 F)
1975	31.1 C (88.0 F)
1976	29.4 C (84.9 F)
1977	35.0 C (95.0 F)
1978	34.4 C (93.9 F)
1979	36.1 C (97.0 F)
1980	31.1 C (88.0 F)
1981	36.1 C (97.0 F)
1982	33.9 C (93.0 F)
1983	32.8 C (91.0 F)
1984	37.8 C (100.0 F)
1985	33.3 C (91.9 F)
1986	32.2 C (90.0 F)
1987	32.8 C (91.0 F)
1988	35.0 C (95.0 F)
1989	31.1 C (88.0 F)
1990	34.4 C (93.9 F)
1991	35.0 C (95.0 F)
1992	33.3 C (91.9 F)
1993	33.3 C (91.9 F)
1994	36.7 C (98.1 F)
1995	34.4 C (93.9 F)
1996	33.3 C (91.9 F)
1997	32.2 C (90.0 F)
1998	37.8 C (100.0 F)
1999	30.6 C (87.1 F)
2000	31.7 C (89.1 F)
2001	31.1 C (88.0 F)
2002	33.3 C (91.9 F)
2003	34.4 C (93.9 F)
2004	35.0 C (95.0 F)
2005	31.1 C (88.0 F)
2006	34.4 C (93.9 F)
2007	33.9 C (93.0 F)
2008	32.2 C (90.0 F)
2009	38.9 C (102.0 F)
2010	32.8 C (91.0 F)
2011	28.3 C (82.9 F)
2012	31.7 C (89.1 F)
2013	31.1 C (88.0 F)
2014	33.3 C (91.9 F)
2015	34.4 C (93.9 F)
2016	31.7 C (89.1 F)
2017	34.4 C (93.9 F)
2018	31.1 C (88.0 F)
2019	31.1 C (88.0 F)
2020	33.9 C (93.0 F)
2021	35.0 C (95.0 F)
2022	32.8 C (91.0 F)
2023	34.4 C (93.9 F)
2024	34.4 C (93.9 F)
2025	33.9 C (93.0 F)
2026	33.3 C (91.9 F)

Coldest night (TNn)

The coldest night of the year at Monroe, 1929 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 Monroe by year
Year	Coldest night (TNn)
1929	-6.7 C (19.9 F)
1930	-16.1 C (3.0 F)
1931	-6.7 C (19.9 F)
1932	-12.2 C (10.0 F)
1933	-13.9 C (7.0 F)
1934	-3.3 C (26.1 F)
1935	-16.7 C (1.9 F)
1936	-13.9 C (7.0 F)
1937	-15.0 C (5.0 F)
1938	-7.2 C (19.0 F)
1939	-6.7 C (19.9 F)
1940	-8.9 C (16.0 F)
1941	-7.8 C (18.0 F)
1942	-10.6 C (12.9 F)
1943	-13.3 C (8.1 F)
1944	-8.9 C (16.0 F)
1945	-8.9 C (16.0 F)
1946	-6.1 C (21.0 F)
1947	-12.8 C (9.0 F)
1948	-8.9 C (16.0 F)
1949	-15.6 C (3.9 F)
1950	-19.4 C (-2.9 F)
1951	-11.7 C (10.9 F)
1952	-11.7 C (10.9 F)
1953	-4.4 C (24.1 F)
1954	-11.7 C (10.9 F)
1955	-15.0 C (5.0 F)
1956	-13.3 C (8.1 F)
1957	-18.3 C (-0.9 F)
1958	-6.7 C (19.9 F)
1959	-12.2 C (10.0 F)
1960	-7.2 C (19.0 F)
1961	-6.1 C (21.0 F)
1962	-12.2 C (10.0 F)
1963	-12.2 C (10.0 F)
1964	-16.7 C (1.9 F)
1965	-7.8 C (18.0 F)
1966	-5.0 C (23.0 F)
1967	-7.2 C (19.0 F)
1968	-17.2 C (1.0 F)
1969	-13.9 C (7.0 F)
1970	-9.4 C (15.1 F)
1971	-10.6 C (12.9 F)
1972	-17.2 C (1.0 F)
1973	-13.9 C (7.0 F)
1974	-11.7 C (10.9 F)
1975	-6.7 C (19.9 F)
1976	-7.2 C (19.0 F)
1977	-10.6 C (12.9 F)
1978	-14.4 C (6.1 F)
1979	-14.4 C (6.1 F)
1980	-3.9 C (25.0 F)
1981	-6.1 C (21.0 F)
1982	-14.4 C (6.1 F)
1983	-15.0 C (5.0 F)
1984	-8.9 C (16.0 F)
1985	-17.2 C (1.0 F)
1986	-9.4 C (15.1 F)
1987	-6.1 C (21.0 F)
1988	-5.6 C (21.9 F)
1989	-17.2 C (1.0 F)
1990	-17.2 C (1.0 F)
1991	-7.8 C (18.0 F)
1992	-6.7 C (19.9 F)
1993	-10.0 C (14.0 F)
1994	-8.3 C (17.1 F)
1995	-7.8 C (18.0 F)
1996	-12.8 C (9.0 F)
1997	-7.2 C (19.0 F)
1998	-11.7 C (10.9 F)
1999	-3.3 C (26.1 F)
2000	-5.0 C (23.0 F)
2001	-4.4 C (24.1 F)
2002	-5.0 C (23.0 F)
2003	-6.7 C (19.9 F)
2004	-10.0 C (14.0 F)
2005	-7.2 C (19.0 F)
2006	-9.4 C (15.1 F)
2007	-10.0 C (14.0 F)
2008	-15.0 C (5.0 F)
2009	-12.8 C (9.0 F)
2010	-12.2 C (10.0 F)
2011	-8.9 C (16.0 F)
2012	-5.6 C (21.9 F)
2013	-12.2 C (10.0 F)
2014	-11.1 C (12.0 F)
2015	-7.2 C (19.0 F)
2016	-7.8 C (18.0 F)
2017	-10.6 C (12.9 F)
2018	-7.8 C (18.0 F)
2019	-12.8 C (9.0 F)
2020	-6.7 C (19.9 F)
2021	-13.3 C (8.1 F)
2022	-12.2 C (10.0 F)
2023	-7.2 C (19.0 F)
2024	-11.7 C (10.9 F)
2025	-8.9 C (16.0 F)
2026	-6.1 C (21.0 F)

Wettest day (Rx1day)

The wettest day of the year at Monroe, 1929 to 2026. The record is 162.3 mm (6.4 in) in 1984, marked on the chart; the median year is 45.6 mm (1.8 in).

Wettest day (Rx1day) at Monroe by year
Year	Wettest day (Rx1day)
1929	40.4 mm (1.6 in)
1930	33.8 mm (1.3 in)
1931	55.9 mm (2.2 in)
1932	54.6 mm (2.1 in)
1933	48.0 mm (1.9 in)
1934	33.5 mm (1.3 in)
1935	45.7 mm (1.8 in)
1936	62.2 mm (2.4 in)
1937	66.0 mm (2.6 in)
1938	38.4 mm (1.5 in)
1939	35.1 mm (1.4 in)
1940	35.6 mm (1.4 in)
1941	38.4 mm (1.5 in)
1942	43.9 mm (1.7 in)
1943	37.6 mm (1.5 in)
1944	33.5 mm (1.3 in)
1945	47.2 mm (1.9 in)
1946	53.3 mm (2.1 in)
1947	42.7 mm (1.7 in)
1948	32.3 mm (1.3 in)
1949	39.4 mm (1.6 in)
1950	37.6 mm (1.5 in)
1951	48.3 mm (1.9 in)
1952	33.5 mm (1.3 in)
1953	40.1 mm (1.6 in)
1954	41.1 mm (1.6 in)
1955	36.8 mm (1.4 in)
1956	30.0 mm (1.2 in)
1957	51.1 mm (2.0 in)
1958	50.3 mm (2.0 in)
1959	48.8 mm (1.9 in)
1960	43.2 mm (1.7 in)
1961	40.4 mm (1.6 in)
1962	63.5 mm (2.5 in)
1963	38.1 mm (1.5 in)
1964	62.2 mm (2.4 in)
1965	34.5 mm (1.4 in)
1966	38.1 mm (1.5 in)
1967	68.3 mm (2.7 in)
1968	48.3 mm (1.9 in)
1969	41.4 mm (1.6 in)
1970	45.7 mm (1.8 in)
1971	43.2 mm (1.7 in)
1972	45.5 mm (1.8 in)
1973	32.0 mm (1.3 in)
1974	39.6 mm (1.6 in)
1975	48.3 mm (1.9 in)
1976	35.1 mm (1.4 in)
1977	50.3 mm (2.0 in)
1978	33.5 mm (1.3 in)
1979	37.1 mm (1.5 in)
1980	49.3 mm (1.9 in)
1981	54.9 mm (2.2 in)
1982	51.6 mm (2.0 in)
1983	48.8 mm (1.9 in)
1984	162.3 mm (6.4 in)
1985	64.8 mm (2.6 in)
1986	99.6 mm (3.9 in)
1987	44.5 mm (1.8 in)
1988	52.3 mm (2.1 in)
1989	47.0 mm (1.9 in)
1990	69.9 mm (2.8 in)
1991	46.0 mm (1.8 in)
1992	37.1 mm (1.5 in)
1993	33.0 mm (1.3 in)
1994	41.4 mm (1.6 in)
1995	31.5 mm (1.2 in)
1996	64.8 mm (2.6 in)
1997	38.6 mm (1.5 in)
1998	44.2 mm (1.7 in)
1999	46.5 mm (1.8 in)
2000	32.0 mm (1.3 in)
2001	48.8 mm (1.9 in)
2002	36.8 mm (1.4 in)
2003	79.2 mm (3.1 in)
2004	48.3 mm (1.9 in)
2005	24.9 mm (1.0 in)
2006	59.2 mm (2.3 in)
2007	100.1 mm (3.9 in)
2008	61.0 mm (2.4 in)
2009	40.6 mm (1.6 in)
2010	61.0 mm (2.4 in)
2011	35.6 mm (1.4 in)
2012	50.8 mm (2.0 in)
2013	50.8 mm (2.0 in)
2014	46.5 mm (1.8 in)
2015	42.7 mm (1.7 in)
2016	55.6 mm (2.2 in)
2017	45.7 mm (1.8 in)
2018	45.0 mm (1.8 in)
2019	69.9 mm (2.8 in)
2020	67.1 mm (2.6 in)
2021	38.1 mm (1.5 in)
2022	50.8 mm (2.0 in)
2023	68.1 mm (2.7 in)
2024	50.8 mm (2.0 in)
2025	34.8 mm (1.4 in)
2026	27.7 mm (1.1 in)

Wettest five days (Rx5day)

The wettest five days of the year at Monroe, 1929 to 2026. The record is 199.1 mm (7.8 in) in 1984, marked on the chart; the median year is 93.5 mm (3.7 in).

Wettest five days (Rx5day) at Monroe by year
Year	Wettest five days (Rx5day)
1929	63.8 mm (2.5 in)
1930	62.8 mm (2.5 in)
1931	94.5 mm (3.7 in)
1932	104.1 mm (4.1 in)
1933	130.9 mm (5.2 in)
1934	91.2 mm (3.6 in)
1935	90.7 mm (3.6 in)
1936	117.5 mm (4.6 in)
1937	126.7 mm (5.0 in)
1938	98.5 mm (3.9 in)
1939	86.8 mm (3.4 in)
1940	77.2 mm (3.0 in)
1941	90.2 mm (3.6 in)
1942	101.8 mm (4.0 in)
1943	89.6 mm (3.5 in)
1944	82.4 mm (3.2 in)
1945	94.9 mm (3.7 in)
1946	86.9 mm (3.4 in)
1947	124.7 mm (4.9 in)
1948	72.5 mm (2.9 in)
1949	92.2 mm (3.6 in)
1950	95.5 mm (3.8 in)
1951	115.8 mm (4.6 in)
1952	54.8 mm (2.2 in)
1953	78.4 mm (3.1 in)
1954	100.5 mm (4.0 in)
1955	67.3 mm (2.6 in)
1956	96.6 mm (3.8 in)
1957	114.3 mm (4.5 in)
1958	84.1 mm (3.3 in)
1959	132.3 mm (5.2 in)
1960	80.2 mm (3.2 in)
1961	90.7 mm (3.6 in)
1962	87.6 mm (3.4 in)
1963	66.5 mm (2.6 in)
1964	78.8 mm (3.1 in)
1965	113.8 mm (4.5 in)
1966	88.0 mm (3.5 in)
1967	118.4 mm (4.7 in)
1968	92.4 mm (3.6 in)
1969	79.6 mm (3.1 in)
1970	102.7 mm (4.0 in)
1971	86.4 mm (3.4 in)
1972	97.6 mm (3.8 in)
1973	80.8 mm (3.2 in)
1974	109.0 mm (4.3 in)
1975	91.2 mm (3.6 in)
1976	69.9 mm (2.8 in)
1977	100.6 mm (4.0 in)
1978	71.0 mm (2.8 in)
1979	97.7 mm (3.8 in)
1980	67.3 mm (2.6 in)
1981	88.5 mm (3.5 in)
1982	98.9 mm (3.9 in)
1983	112.6 mm (4.4 in)
1984	199.1 mm (7.8 in)
1985	113.0 mm (4.4 in)
1986	139.9 mm (5.5 in)
1987	90.6 mm (3.6 in)
1988	85.6 mm (3.4 in)
1989	82.9 mm (3.3 in)
1990	141.5 mm (5.6 in)
1991	102.4 mm (4.0 in)
1992	101.6 mm (4.0 in)
1993	86.6 mm (3.4 in)
1994	101.6 mm (4.0 in)
1995	84.8 mm (3.3 in)
1996	137.8 mm (5.4 in)
1997	154.1 mm (6.1 in)
1998	84.1 mm (3.3 in)
1999	135.9 mm (5.4 in)
2000	53.6 mm (2.1 in)
2001	90.9 mm (3.6 in)
2002	88.7 mm (3.5 in)
2003	142.6 mm (5.6 in)
2004	79.7 mm (3.1 in)
2005	84.6 mm (3.3 in)
2006	107.4 mm (4.2 in)
2007	138.5 mm (5.5 in)
2008	100.9 mm (4.0 in)
2009	94.5 mm (3.7 in)
2010	116.1 mm (4.6 in)
2011	79.8 mm (3.1 in)
2012	141.5 mm (5.6 in)
2013	88.9 mm (3.5 in)
2014	83.6 mm (3.3 in)
2015	121.9 mm (4.8 in)
2016	120.7 mm (4.8 in)
2017	90.6 mm (3.6 in)
2018	97.6 mm (3.8 in)
2019	142.1 mm (5.6 in)
2020	145.3 mm (5.7 in)
2021	101.3 mm (4.0 in)
2022	108.5 mm (4.3 in)
2023	140.8 mm (5.5 in)
2024	81.6 mm (3.2 in)
2025	76.3 mm (3.0 in)
2026	61.4 mm (2.4 in)

Longest dry spell (CDD)

The longest dry spell of the year at Monroe, 1929 to 2026. The record is 56 days in 2026, marked on the chart; the median year is 23 days.

Longest dry spell (CDD) at Monroe by year
Year	Longest dry spell (CDD)
1929	18 days
1930	32 days
1931	43 days
1932	16 days
1933	27 days
1934	31 days
1935	18 days
1936	20 days
1937	16 days
1938	2 days
1939	11 days
1940	14 days
1941	19 days
1942	19 days
1943	24 days
1944	16 days
1945	23 days
1946	27 days
1947	34 days
1948	12 days
1949	19 days
1950	19 days
1951	52 days
1952	37 days
1953	21 days
1954	18 days
1955	35 days
1956	19 days
1957	19 days
1958	35 days
1959	23 days
1960	54 days
1961	40 days
1962	16 days
1963	17 days
1964	10 days
1965	26 days
1966	18 days
1967	43 days
1968	24 days
1969	22 days
1970	25 days
1971	42 days
1972	33 days
1973	14 days
1974	30 days
1975	22 days
1976	17 days
1977	36 days
1978	15 days
1979	32 days
1980	20 days
1981	31 days
1982	18 days
1983	16 days
1984	20 days
1985	36 days
1986	37 days
1987	24 days
1988	34 days
1989	16 days
1990	23 days
1991	38 days
1992	16 days
1993	20 days
1994	33 days
1995	19 days
1996	21 days
1997	17 days
1998	32 days
1999	16 days
2000	25 days
2001	28 days
2002	21 days
2003	36 days
2004	26 days
2005	15 days
2006	18 days
2007	14 days
2008	24 days
2009	21 days
2010	25 days
2011	23 days
2012	48 days
2013	35 days
2014	25 days
2015	25 days
2016	22 days
2017	55 days
2018	27 days
2019	14 days
2020	23 days
2021	37 days
2022	46 days
2023	33 days
2024	28 days
2025	38 days
2026	56 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

74 years with a frost

Across 74 years with a frost, the median last spring frost at Monroe falls on 16 April and the median first autumn frost on 25 October, which leaves a median of 191 days between them.

In 1983 to 2025 the median growing season was 197 days. That is 10 days more than in 1930 to 1964.

Fitted over all years, the growing season changes by +2.3 days per decade at this station.

Frost dates and growing season at Monroe
Measure	Median, all years	Earliest period (1930 to 1964)	Recent period (1983 to 2025)	Recent against earliest	Fitted trend
Last spring frost	16 April	19 April	15 April	4 days earlier	-0.4 days per decade
First autumn frost	25 October	22 October	31 October	9 days later	+1.9 days per decade
Growing days	191 days	187 days	197 days	10 days more	+2.3 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

87 years, 1929 to 2025

A day with at least 44.5 mm (1.8 in) of rain is expected about once in 2 years. A day with at least 115.2 mm (4.5 in) of rain is expected about once in 100 years.

Rainfall return levels at Monroe: the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	44.5 mm (1.8 in)
5 years	57.5 mm (2.3 in)
10 years	68.0 mm (2.7 in)
25 years	84.1 mm (3.3 in)
50 years	98.5 mm (3.9 in)
100 years	115.2 mm (4.5 in)	Longer than the 87 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, 87 years of values from 1929 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: 162.3 mm (6.4 in) in 1984; 100.1 mm (3.9 in) in 2007; 99.6 mm (3.9 in) in 1986.

Station Changes

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

Climate Twins

2006 to 2025 against 1961 to 1990

Over 2006 to 2025, Monroe had a mean temperature of 10.4 C (50.8 F) and 1,374.0 mm (54.1 in) of rain a year. The 3 stations whose 1961 to 1990 climate was closest to that are Battle Ground (United States, 234 km away), Clatskanie (United States, 214 km away) and Oakville (United States, 146 km away).

Climate twins of Monroe: stations whose 1961 to 1990 climate is closest to its 2006 to 2025 climate
Twin station	Country	Distance away	Mean temperature, 1961-1990	Rain a year, 1961-1990	Climate difference
Battle Ground	United States	234 km (145 mi)	10.6 C (51.1 F)	1,298.4 mm (51.1 in)	0.59
Clatskanie	United States	214 km (133 mi)	10.5 C (51.0 F)	1,430.1 mm (56.3 in)	0.65
Oakville	United States	146 km (91 mi)	10.4 C (50.6 F)	1,472.4 mm (58.0 in)	0.67

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 Monroe standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Monroe 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 2026-10-15 (15 October 2026). Records are computed by this site and are not official.

Data as of 2026-10-15. Last revised 15 October 2026 (2026-10-15).