Waterloo Weather Records (USC00359083)

Record envelope, standing records and threshold days for Waterloo (USC00359083), Oregon, United States, with 90 years of record.

Key Facts for Waterloo

Waterloo (USC00359083) is a weather station in Oregon, United States at 44.52 latitude and -122.87 longitude, 113 m (370 ft) above sea level.
The station reports from 1923 to 2012, 90 years of record.
0 records set at Waterloo still stand.
Records are tracked for prcp, snow, snwd: an element needs 30 years of data to be eligible.
Waterloo set a monthly record daily precipitation of 96.8 mm (3.8 in) on 31 March 2012.

About the Station

Location: Oregon, United States, 44.52 latitude, -122.87 longitude.
Elevation: 113 m (370 ft).
Period of record: 1923 to 2012, 90 years.
Eligible elements: 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 Waterloo. 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 Waterloo, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	n/a	n/a	n/a	n/a
Feb	n/a	n/a	n/a	n/a
Mar	n/a	n/a	n/a	n/a
Apr	n/a	n/a	n/a	n/a
May	n/a	n/a	n/a	n/a
Jun	n/a	n/a	n/a	n/a
Jul	n/a	n/a	n/a	n/a
Aug	n/a	n/a	n/a	n/a
Sep	n/a	n/a	n/a	n/a
Oct	n/a	n/a	n/a	n/a
Nov	n/a	n/a	n/a	n/a
Dec	n/a	n/a	n/a	n/a

Which Years Hold Standing Records

0 standing records

0 records at Waterloo still stand.

Wettest Day of Each Month

Feb: 102.6 mm (4.0 in)

The wettest day on record for each calendar month at Waterloo. The most was 102.6 mm (4.0 in) on 18 February 1949.

Record daily precipitation for each month at Waterloo
Month	Record daily precipitation (mm)	Date
Jan	81.3 mm (3.2 in)	7 January 1948
Feb	102.6 mm (4.0 in)	18 February 1949
Mar	96.8 mm (3.8 in)	31 March 2012
Apr	45.7 mm (1.8 in)	13 April 1937
May	48.3 mm (1.9 in)	17 May 1991
Jun	47.0 mm (1.9 in)	8 June 1927
Jul	38.6 mm (1.5 in)	18 July 1987
Aug	38.1 mm (1.5 in)	24 August 1977
Sep	50.8 mm (2.0 in)	8 September 1925
Oct	82.6 mm (3.3 in)	14 October 1923
Nov	87.1 mm (3.4 in)	1 November 1994
Dec	77.5 mm (3.1 in)	28 December 1998

Latest Records

Latest records at Waterloo
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
31 March 2012	Waterloo, US	monthly rain	96.8 mm (3.8 in)	47.5 mm (1.9 in)	49 years	73 of 100 (Major)
22 March 2012	Waterloo, US	daily rain	39.9 mm (1.6 in)	1.8 mm (0.07 in)	14 years	15 of 100 (Routine)
19 January 2012	Waterloo, US	daily rain	60.2 mm (2.4 in)	27.7 mm (1.1 in)	84 years	61 of 100 (Major)
30 December 2011	Waterloo, US	daily rain	55.1 mm (2.2 in)	1.3 mm (0.05 in)	73 years	31 of 100 (Routine)
17 July 2011	Waterloo, US	daily rain	14.5 mm (0.6 in)	2.8 mm (0.11 in)	36 years	20 of 100 (Routine)
13 July 2011	Waterloo, US	daily rain	7.9 mm (0.31 in)	1.8 mm (0.07 in)	6 years	13 of 100 (Routine)
31 May 2011	Waterloo, US	daily rain	25.7 mm (1.0 in)	6.1 mm (0.24 in)	24 years	24 of 100 (Routine)
1 March 2011	Waterloo, US	daily rain	33.5 mm (1.3 in)	13.9 mm (0.5 in)	56 years	43 of 100 (Notable)
25 October 2010	Waterloo, US	daily rain	28.4 mm (1.1 in)	6.8 mm (0.27 in)	33 years	25 of 100 (Routine)
31 August 2010	Waterloo, US	daily rain	15.7 mm (0.6 in)	0.5 mm (0.02 in)	28 years	16 of 100 (Routine)
4 June 2010	Waterloo, US	daily rain	26.2 mm (1.0 in)	7.7 mm (0.30 in)	29 years	28 of 100 (Routine)
2 June 2010	Waterloo, US	daily rain	32.3 mm (1.3 in)	15.0 mm (0.6 in)	4 years	33 of 100 (Routine)
27 April 2010	Waterloo, US	daily rain	28.2 mm (1.1 in)	3.3 mm (0.13 in)	48 years	27 of 100 (Routine)
2 April 2010	Waterloo, US	daily rain	21.3 mm (0.8 in)	4.3 mm (0.17 in)	37 years	20 of 100 (Routine)
29 March 2010	Waterloo, US	daily rain	36.6 mm (1.4 in)	1.0 mm (0.04 in)	67 years	29 of 100 (Routine)
24 February 2009	Waterloo, US	daily rain	36.1 mm (1.4 in)	7.4 mm (0.29 in)	83 years	39 of 100 (Notable)
4 November 2008	Waterloo, US	daily rain	37.6 mm (1.5 in)	3.1 mm (0.12 in)	43 years	22 of 100 (Routine)
20 August 2008	Waterloo, US	daily rain	10.2 mm (0.4 in)	0.3 mm (0.01 in)	30 years	17 of 100 (Routine)
2 February 2008	Waterloo, US	daily rain	37.6 mm (1.5 in)	10.9 mm (0.4 in)	8 years	21 of 100 (Routine)
27 January 2008	Waterloo, US	daily rain	53.1 mm (2.1 in)	17.5 mm (0.7 in)	48 years	39 of 100 (Notable)

Extremes by Year

1923 to 2012

Yearly extremes at Waterloo: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Wettest day (Rx1day)	102.6 mm (4.0 in)	1949	50.8 mm (2.0 in)	90
Wettest five days (Rx5day)	213.4 mm (8.4 in)	1924	112.8 mm (4.4 in)	90
Longest dry spell (CDD)	78 days	1967	37 days	90

Wettest day (Rx1day)

The wettest day of the year at Waterloo, 1923 to 2012. The record is 102.6 mm (4.0 in) in 1949, marked on the chart; the median year is 50.8 mm (2.0 in).

Wettest day (Rx1day) at Waterloo by year
Year	Wettest day (Rx1day)
1923	82.6 mm (3.3 in)
1924	54.6 mm (2.1 in)
1925	50.8 mm (2.0 in)
1926	49.3 mm (1.9 in)
1927	47.0 mm (1.9 in)
1928	74.9 mm (2.9 in)
1929	63.5 mm (2.5 in)
1930	47.5 mm (1.9 in)
1931	46.5 mm (1.8 in)
1932	27.9 mm (1.1 in)
1933	36.8 mm (1.4 in)
1934	50.8 mm (2.0 in)
1935	37.6 mm (1.5 in)
1936	46.0 mm (1.8 in)
1937	83.8 mm (3.3 in)
1938	58.4 mm (2.3 in)
1939	45.7 mm (1.8 in)
1940	52.8 mm (2.1 in)
1941	67.6 mm (2.7 in)
1942	52.6 mm (2.1 in)
1943	50.8 mm (2.0 in)
1944	35.6 mm (1.4 in)
1945	39.1 mm (1.5 in)
1946	41.9 mm (1.6 in)
1947	82.6 mm (3.3 in)
1948	81.3 mm (3.2 in)
1949	102.6 mm (4.0 in)
1950	67.1 mm (2.6 in)
1951	50.8 mm (2.0 in)
1952	38.1 mm (1.5 in)
1953	50.8 mm (2.0 in)
1954	64.8 mm (2.6 in)
1955	61.0 mm (2.4 in)
1956	54.4 mm (2.1 in)
1957	71.1 mm (2.8 in)
1958	56.4 mm (2.2 in)
1959	72.4 mm (2.9 in)
1960	76.7 mm (3.0 in)
1961	63.5 mm (2.5 in)
1962	51.3 mm (2.0 in)
1963	49.3 mm (1.9 in)
1964	48.8 mm (1.9 in)
1965	63.5 mm (2.5 in)
1966	60.7 mm (2.4 in)
1967	38.4 mm (1.5 in)
1968	40.6 mm (1.6 in)
1969	50.8 mm (2.0 in)
1970	43.9 mm (1.7 in)
1971	43.4 mm (1.7 in)
1972	41.1 mm (1.6 in)
1973	44.7 mm (1.8 in)
1974	68.1 mm (2.7 in)
1975	44.7 mm (1.8 in)
1976	33.5 mm (1.3 in)
1977	40.1 mm (1.6 in)
1978	52.1 mm (2.1 in)
1979	48.3 mm (1.9 in)
1980	57.9 mm (2.3 in)
1981	75.4 mm (3.0 in)
1982	48.3 mm (1.9 in)
1983	45.0 mm (1.8 in)
1984	55.9 mm (2.2 in)
1985	40.6 mm (1.6 in)
1986	49.5 mm (1.9 in)
1987	51.8 mm (2.0 in)
1988	34.0 mm (1.3 in)
1989	31.8 mm (1.3 in)
1990	34.0 mm (1.3 in)
1991	48.3 mm (1.9 in)
1992	34.5 mm (1.4 in)
1993	39.6 mm (1.6 in)
1994	87.1 mm (3.4 in)
1995	46.2 mm (1.8 in)
1996	84.8 mm (3.3 in)
1997	47.8 mm (1.9 in)
1998	77.5 mm (3.1 in)
1999	54.6 mm (2.1 in)
2000	36.3 mm (1.4 in)
2001	45.7 mm (1.8 in)
2002	52.8 mm (2.1 in)
2003	50.0 mm (2.0 in)
2004	45.5 mm (1.8 in)
2005	48.0 mm (1.9 in)
2006	68.6 mm (2.7 in)
2007	56.6 mm (2.2 in)
2008	53.1 mm (2.1 in)
2009	37.8 mm (1.5 in)
2010	42.7 mm (1.7 in)
2011	55.1 mm (2.2 in)
2012	96.8 mm (3.8 in)

Wettest five days (Rx5day)

The wettest five days of the year at Waterloo, 1923 to 2012. The record is 213.4 mm (8.4 in) in 1924, marked on the chart; the median year is 112.8 mm (4.4 in).

Wettest five days (Rx5day) at Waterloo by year
Year	Wettest five days (Rx5day)
1923	97.5 mm (3.8 in)
1924	213.4 mm (8.4 in)
1925	84.4 mm (3.3 in)
1926	127.3 mm (5.0 in)
1927	100.9 mm (4.0 in)
1928	158.7 mm (6.2 in)
1929	144.8 mm (5.7 in)
1930	78.0 mm (3.1 in)
1931	88.9 mm (3.5 in)
1932	68.8 mm (2.7 in)
1933	101.1 mm (4.0 in)
1934	95.1 mm (3.7 in)
1935	58.2 mm (2.3 in)
1936	121.6 mm (4.8 in)
1937	150.6 mm (5.9 in)
1938	126.9 mm (5.0 in)
1939	85.5 mm (3.4 in)
1940	105.7 mm (4.2 in)
1941	134.7 mm (5.3 in)
1942	127.5 mm (5.0 in)
1943	138.7 mm (5.5 in)
1944	102.6 mm (4.0 in)
1945	116.3 mm (4.6 in)
1946	93.9 mm (3.7 in)
1947	194.1 mm (7.6 in)
1948	163.0 mm (6.4 in)
1949	191.7 mm (7.5 in)
1950	164.1 mm (6.5 in)
1951	99.1 mm (3.9 in)
1952	94.7 mm (3.7 in)
1953	115.4 mm (4.5 in)
1954	141.6 mm (5.6 in)
1955	170.7 mm (6.7 in)
1956	121.9 mm (4.8 in)
1957	155.9 mm (6.1 in)
1958	95.3 mm (3.8 in)
1959	158.0 mm (6.2 in)
1960	160.1 mm (6.3 in)
1961	160.9 mm (6.3 in)
1962	98.2 mm (3.9 in)
1963	101.7 mm (4.0 in)
1964	197.6 mm (7.8 in)
1965	124.4 mm (4.9 in)
1966	158.7 mm (6.2 in)
1967	93.8 mm (3.7 in)
1968	100.9 mm (4.0 in)
1969	111.8 mm (4.4 in)
1970	120.3 mm (4.7 in)
1971	113.3 mm (4.5 in)
1972	103.6 mm (4.1 in)
1973	138.5 mm (5.5 in)
1974	176.8 mm (7.0 in)
1975	66.3 mm (2.6 in)
1976	103.3 mm (4.1 in)
1977	115.8 mm (4.6 in)
1978	85.1 mm (3.4 in)
1979	94.3 mm (3.7 in)
1980	162.7 mm (6.4 in)
1981	113.1 mm (4.5 in)
1982	105.7 mm (4.2 in)
1983	94.0 mm (3.7 in)
1984	114.2 mm (4.5 in)
1985	85.0 mm (3.3 in)
1986	107.4 mm (4.2 in)
1987	138.7 mm (5.5 in)
1988	89.4 mm (3.5 in)
1989	58.4 mm (2.3 in)
1990	91.6 mm (3.6 in)
1991	96.5 mm (3.8 in)
1992	89.2 mm (3.5 in)
1993	89.2 mm (3.5 in)
1994	159.5 mm (6.3 in)
1995	112.6 mm (4.4 in)
1996	182.1 mm (7.2 in)
1997	124.9 mm (4.9 in)
1998	128.0 mm (5.0 in)
1999	114.4 mm (4.5 in)
2000	116.0 mm (4.6 in)
2001	95.3 mm (3.8 in)
2002	112.9 mm (4.4 in)
2003	107.0 mm (4.2 in)
2004	72.3 mm (2.8 in)
2005	80.5 mm (3.2 in)
2006	166.1 mm (6.5 in)
2007	94.3 mm (3.7 in)
2008	88.9 mm (3.5 in)
2009	86.3 mm (3.4 in)
2010	97.8 mm (3.9 in)
2011	113.7 mm (4.5 in)
2012	135.6 mm (5.3 in)

Longest dry spell (CDD)

The longest dry spell of the year at Waterloo, 1923 to 2012. The record is 78 days in 1967, marked on the chart; the median year is 37 days.

Longest dry spell (CDD) at Waterloo by year
Year	Longest dry spell (CDD)
1923	20 days
1924	26 days
1925	32 days
1926	31 days
1927	59 days
1928	42 days
1929	73 days
1930	73 days
1931	69 days
1932	26 days
1933	38 days
1934	36 days
1935	11 days
1936	31 days
1937	31 days
1938	36 days
1939	39 days
1940	41 days
1941	30 days
1942	41 days
1943	27 days
1944	44 days
1945	39 days
1946	24 days
1947	18 days
1948	14 days
1949	38 days
1950	44 days
1951	27 days
1952	44 days
1953	36 days
1954	35 days
1955	7 days
1956	41 days
1957	29 days
1958	59 days
1959	51 days
1960	55 days
1961	51 days
1962	37 days
1963	32 days
1964	18 days
1965	35 days
1966	48 days
1967	78 days
1968	20 days
1969	38 days
1970	62 days
1971	21 days
1972	38 days
1973	58 days
1974	31 days
1975	33 days
1976	25 days
1977	29 days
1978	20 days
1979	36 days
1980	51 days
1981	73 days
1982	27 days
1983	23 days
1984	43 days
1985	23 days
1986	17 days
1987	34 days
1988	74 days
1989	18 days
1990	42 days
1991	39 days
1992	31 days
1993	44 days
1994	62 days
1995	27 days
1996	42 days
1997	41 days
1998	69 days
1999	35 days
2000	44 days
2001	31 days
2002	43 days
2003	44 days
2004	29 days
2005	38 days
2006	63 days
2007	28 days
2008	59 days
2009	30 days
2010	59 days
2011	37 days
2012	6 days

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

Rainfall Return Levels

73 years, 1926 to 2011

A day with at least 49.5 mm (1.9 in) of rain is expected about once in 2 years. A day with at least 93.2 mm (3.7 in) of rain is expected about once in 100 years.

Rainfall return levels at Waterloo: the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	49.5 mm (1.9 in)
5 years	61.4 mm (2.4 in)
10 years	69.2 mm (2.7 in)
25 years	78.9 mm (3.1 in)
50 years	86.1 mm (3.4 in)
100 years	93.2 mm (3.7 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 1926 to 2011.

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: 87.1 mm (3.4 in) in 1994; 84.8 mm (3.3 in) in 1996; 83.8 mm (3.3 in) in 1937.

Download the Data

Data for Waterloo standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Waterloo 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 2026-10-13 (13 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).

Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	n/a	n/a	n/a	n/a
Feb	n/a	n/a	n/a	n/a
Mar	n/a	n/a	n/a	n/a
Apr	n/a	n/a	n/a	n/a
May	n/a	n/a	n/a	n/a
Jun	n/a	n/a	n/a	n/a
Jul	n/a	n/a	n/a	n/a
Aug	n/a	n/a	n/a	n/a
Sep	n/a	n/a	n/a	n/a
Oct	n/a	n/a	n/a	n/a
Nov	n/a	n/a	n/a	n/a
Dec	n/a	n/a	n/a	n/a

Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	n/a	n/a	n/a	n/a
Feb	n/a	n/a	n/a	n/a
Mar	n/a	n/a	n/a	n/a
Apr	n/a	n/a	n/a	n/a
May	n/a	n/a	n/a	n/a
Jun	n/a	n/a	n/a	n/a
Jul	n/a	n/a	n/a	n/a
Aug	n/a	n/a	n/a	n/a
Sep	n/a	n/a	n/a	n/a
Oct	n/a	n/a	n/a	n/a
Nov	n/a	n/a	n/a	n/a
Dec	n/a	n/a	n/a	n/a