Mill Creek Weather Records (USC00455377)

Record envelope, standing records and threshold days for Mill Creek (USC00455377), Washington, United States, with 59 years of record.

Key Facts for Mill Creek

Mill Creek (USC00455377) is a weather station in Washington, United States at 46.02 latitude and -118.12 longitude, 610 m (2,001 ft) above sea level.
The station reports from 1915 to 1973, 59 years of record.
154 records set at Mill Creek still stand.
Records are tracked for prcp, snow: an element needs 30 years of data to be eligible.
Mill Creek set a daily record precipitation of 27.9 mm (1.1 in) on 20 September 1973.

About the Station

Location: Washington, United States, 46.02 latitude, -118.12 longitude.
Elevation: 610 m (2,001 ft).
Period of record: 1915 to 1973, 59 years.
Eligible elements: prcp, snow.

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 Mill Creek. 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 Mill Creek, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	3.9 C (39.0 F)	-23.3 C (-9.9 F)	n/a	n/a
Feb	n/a	-20.6 C (-5.1 F)	n/a	n/a
Mar	n/a	-3.3 C (26.1 F)	n/a	n/a
Apr	n/a	-3.9 C (25.0 F)	n/a	n/a
May	n/a	n/a	n/a	n/a
Jun	n/a	n/a	n/a	n/a
Jul	36.7 C (98.1 F)	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	-2.2 C (28.0 F)	-11.1 C (12.0 F)	n/a	n/a
Dec	0.0 C (32.0 F)	-20.0 C (-4.0 F)	n/a	n/a

Which Years Hold Standing Records

154 standing records

154 records at Mill Creek still stand. 1930 holds the most, with 93.

Wettest Day of Each Month

Mar: 107.2 mm (4.2 in)

The wettest day on record for each calendar month at Mill Creek. The most was 107.2 mm (4.2 in) on 16 March 1921.

Record daily precipitation for each month at Mill Creek
Month	Record daily precipitation (mm)	Date
Jan	61.0 mm (2.4 in)	26 January 1920
Feb	63.8 mm (2.5 in)	6 February 1926
Mar	107.2 mm (4.2 in)	16 March 1921
Apr	60.7 mm (2.4 in)	19 April 1970
May	59.2 mm (2.3 in)	8 May 1948
Jun	90.9 mm (3.6 in)	1 June 1923
Jul	45.7 mm (1.8 in)	2 July 1966
Aug	36.8 mm (1.4 in)	30 August 1926
Sep	68.1 mm (2.7 in)	19 September 1921
Oct	59.9 mm (2.4 in)	11 October 1943
Nov	67.8 mm (2.7 in)	13 November 1958
Dec	61.0 mm (2.4 in)	22 December 1933

Period of Record Coverage

1919 to 1935

5 years of record at Mill Creek, 1919 to 1935. 5 years have data for under 90 percent of days and are left out of rankings: 1919, 1929, 1930, 1932, 1935.

Latest Records

Latest records at Mill Creek
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
20 September 1973	Mill Creek, US	daily rain	27.9 mm (1.1 in)	0.5 mm (0.02 in)	28 years	13 of 100 (Routine)
24 August 1973	Mill Creek, US	daily rain	18.5 mm (0.7 in)	5.8 mm (0.23 in)	20 years	20 of 100 (Routine)
16 April 1973	Mill Creek, US	daily rain	30.5 mm (1.2 in)	12.2 mm (0.5 in)	51 years	34 of 100 (Routine)
21 September 1972	Mill Creek, US	daily rain	39.4 mm (1.6 in)	5.9 mm (0.23 in)	39 years	22 of 100 (Routine)
15 August 1972	Mill Creek, US	daily rain	11.2 mm (0.4 in)	7.6 mm (0.30 in)	19 years	20 of 100 (Routine)
20 July 1972	Mill Creek, US	daily rain	12.7 mm (0.5 in)	4.6 mm (0.18 in)	7 years	13 of 100 (Routine)
24 June 1972	Mill Creek, US	daily rain	19.8 mm (0.8 in)	1.5 mm (0.06 in)	6 years	7 of 100 (Routine)
11 June 1972	Mill Creek, US	daily rain (Tie)	6.4 mm (0.25 in)	tie	11 years	2 of 100 (Routine)
21 May 1972	Mill Creek, US	daily rain	30.7 mm (1.2 in)	1.2 mm (0.05 in)	42 years	18 of 100 (Routine)
6 April 1972	Mill Creek, US	daily rain	21.6 mm (0.9 in)	4.3 mm (0.17 in)	35 years	20 of 100 (Routine)
24 March 1972	Mill Creek, US	daily rain	34.3 mm (1.4 in)	7.9 mm (0.31 in)	42 years	25 of 100 (Routine)
2 March 1972	Mill Creek, US	daily rain	51.1 mm (2.0 in)	16.0 mm (0.6 in)	38 years	32 of 100 (Routine)
22 January 1972	Mill Creek, US	daily rain	44.5 mm (1.8 in)	24.2 mm (1.0 in)	52 years	45 of 100 (Notable)
15 December 1971	Mill Creek, US	daily rain	30.2 mm (1.2 in)	12.9 mm (0.5 in)	14 years	22 of 100 (Routine)
11 December 1971	Mill Creek, US	monthly snowfall	41.9 cm (16.5 in)	7.6 cm (3.0 in)	19 years	34 of 100 (Routine)
6 December 1971	Mill Creek, US	daily rain	54.9 mm (2.2 in)	8.2 mm (0.32 in)	48 years	27 of 100 (Routine)
27 November 1971	Mill Creek, US	daily rain	25.7 mm (1.0 in)	2.3 mm (0.09 in)	28 years	15 of 100 (Routine)
27 October 1971	Mill Creek, US	daily snowfall	5.1 cm (2.0 in)	5.1 cm (2.0 in)	54 years	31 of 100 (Routine)
19 October 1971	Mill Creek, US	daily rain	20.8 mm (0.8 in)	3.0 mm (0.12 in)	25 years	14 of 100 (Routine)
2 September 1971	Mill Creek, US	daily rain	30.2 mm (1.2 in)	18.8 mm (0.7 in)	9 years	27 of 100 (Routine)

Extremes by Year

1915 to 1973

Yearly extremes at Mill Creek: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	36.7 C (98.1 F)	1919	0.0 C (32.0 F)	5
Coldest night (TNn)	-23.3 C (-9.9 F)	1930	-20.3 C (-4.5 F)	6
Wettest day (Rx1day)	107.2 mm (4.2 in)	1921	47.8 mm (1.9 in)	59
Wettest five days (Rx5day)	165.4 mm (6.5 in)	1931	92.2 mm (3.6 in)	59
Longest dry spell (CDD)	75 days	1967	34 days	59

Hottest day (TXx)

The hottest day of the year at Mill Creek, 1915 to 1973. The record is 36.7 C (98.1 F) in 1919, marked on the chart; the median year is 0.0 C (32.0 F).

Hottest day (TXx) at Mill Creek by year
Year	Hottest day (TXx)
1915	n/a
1916	n/a
1917	n/a
1918	n/a
1919	36.7 C (98.1 F)
1920	n/a
1921	n/a
1922	n/a
1923	n/a
1924	n/a
1925	n/a
1926	n/a
1927	n/a
1928	n/a
1929	-2.2 C (28.0 F)
1930	3.9 C (39.0 F)
1931	n/a
1932	0.0 C (32.0 F)
1933	n/a
1934	n/a
1935	-13.9 C (7.0 F)
1936	n/a
1937	n/a
1938	n/a
1939	n/a
1940	n/a
1941	n/a
1942	n/a
1943	n/a
1944	n/a
1945	n/a
1946	n/a
1947	n/a
1948	n/a
1949	n/a
1950	n/a
1951	n/a
1952	n/a
1953	n/a
1954	n/a
1955	n/a
1956	n/a
1957	n/a
1958	n/a
1959	n/a
1960	n/a
1961	n/a
1962	n/a
1963	n/a
1964	n/a
1965	n/a
1966	n/a
1967	n/a
1968	n/a
1969	n/a
1970	n/a
1971	n/a
1972	n/a
1973	n/a

Coldest night (TNn)

The coldest night of the year at Mill Creek, 1915 to 1973. The record is -23.3 C (-9.9 F) in 1930, marked on the chart; the median year is -20.3 C (-4.5 F).

Coldest night (TNn) at Mill Creek by year
Year	Coldest night (TNn)
1915	n/a
1916	n/a
1917	n/a
1918	n/a
1919	n/a
1920	n/a
1921	n/a
1922	n/a
1923	n/a
1924	-3.9 C (25.0 F)
1925	n/a
1926	-3.3 C (26.1 F)
1927	n/a
1928	n/a
1929	-20.6 C (-5.1 F)
1930	-23.3 C (-9.9 F)
1931	n/a
1932	-20.0 C (-4.0 F)
1933	n/a
1934	n/a
1935	-23.3 C (-9.9 F)
1936	n/a
1937	n/a
1938	n/a
1939	n/a
1940	n/a
1941	n/a
1942	n/a
1943	n/a
1944	n/a
1945	n/a
1946	n/a
1947	n/a
1948	n/a
1949	n/a
1950	n/a
1951	n/a
1952	n/a
1953	n/a
1954	n/a
1955	n/a
1956	n/a
1957	n/a
1958	n/a
1959	n/a
1960	n/a
1961	n/a
1962	n/a
1963	n/a
1964	n/a
1965	n/a
1966	n/a
1967	n/a
1968	n/a
1969	n/a
1970	n/a
1971	n/a
1972	n/a
1973	n/a

Wettest day (Rx1day)

The wettest day of the year at Mill Creek, 1915 to 1973. The record is 107.2 mm (4.2 in) in 1921, marked on the chart; the median year is 47.8 mm (1.9 in).

Wettest day (Rx1day) at Mill Creek by year
Year	Wettest day (Rx1day)
1915	35.8 mm (1.4 in)
1916	42.4 mm (1.7 in)
1917	50.8 mm (2.0 in)
1918	37.3 mm (1.5 in)
1919	44.7 mm (1.8 in)
1920	61.0 mm (2.4 in)
1921	107.2 mm (4.2 in)
1922	44.2 mm (1.7 in)
1923	90.9 mm (3.6 in)
1924	30.7 mm (1.2 in)
1925	39.1 mm (1.5 in)
1926	63.8 mm (2.5 in)
1927	66.3 mm (2.6 in)
1928	56.6 mm (2.2 in)
1929	42.4 mm (1.7 in)
1930	42.7 mm (1.7 in)
1931	96.8 mm (3.8 in)
1932	49.5 mm (1.9 in)
1933	61.0 mm (2.4 in)
1934	35.1 mm (1.4 in)
1935	30.7 mm (1.2 in)
1936	38.4 mm (1.5 in)
1937	31.2 mm (1.2 in)
1938	38.1 mm (1.5 in)
1939	41.7 mm (1.6 in)
1940	44.7 mm (1.8 in)
1941	41.7 mm (1.6 in)
1942	49.8 mm (2.0 in)
1943	59.9 mm (2.4 in)
1944	30.0 mm (1.2 in)
1945	53.3 mm (2.1 in)
1946	60.7 mm (2.4 in)
1947	47.8 mm (1.9 in)
1948	59.2 mm (2.3 in)
1949	44.5 mm (1.8 in)
1950	58.4 mm (2.3 in)
1951	51.8 mm (2.0 in)
1952	43.4 mm (1.7 in)
1953	58.7 mm (2.3 in)
1954	47.5 mm (1.9 in)
1955	45.0 mm (1.8 in)
1956	50.0 mm (2.0 in)
1957	54.1 mm (2.1 in)
1958	67.8 mm (2.7 in)
1959	36.1 mm (1.4 in)
1960	38.6 mm (1.5 in)
1961	55.4 mm (2.2 in)
1962	43.7 mm (1.7 in)
1963	56.9 mm (2.2 in)
1964	64.8 mm (2.6 in)
1965	68.6 mm (2.7 in)
1966	45.7 mm (1.8 in)
1967	40.6 mm (1.6 in)
1968	45.7 mm (1.8 in)
1969	48.0 mm (1.9 in)
1970	60.7 mm (2.4 in)
1971	54.9 mm (2.2 in)
1972	51.1 mm (2.0 in)
1973	31.0 mm (1.2 in)

Wettest five days (Rx5day)

The wettest five days of the year at Mill Creek, 1915 to 1973. The record is 165.4 mm (6.5 in) in 1931, marked on the chart; the median year is 92.2 mm (3.6 in).

Wettest five days (Rx5day) at Mill Creek by year
Year	Wettest five days (Rx5day)
1915	78.5 mm (3.1 in)
1916	77.7 mm (3.1 in)
1917	113.0 mm (4.4 in)
1918	71.9 mm (2.8 in)
1919	91.2 mm (3.6 in)
1920	110.8 mm (4.4 in)
1921	155.4 mm (6.1 in)
1922	67.5 mm (2.7 in)
1923	154.6 mm (6.1 in)
1924	75.1 mm (3.0 in)
1925	68.8 mm (2.7 in)
1926	92.2 mm (3.6 in)
1927	114.2 mm (4.5 in)
1928	108.2 mm (4.3 in)
1929	89.4 mm (3.5 in)
1930	97.3 mm (3.8 in)
1931	165.4 mm (6.5 in)
1932	92.6 mm (3.6 in)
1933	100.4 mm (4.0 in)
1934	76.2 mm (3.0 in)
1935	57.9 mm (2.3 in)
1936	107.2 mm (4.2 in)
1937	65.3 mm (2.6 in)
1938	74.1 mm (2.9 in)
1939	90.5 mm (3.6 in)
1940	73.6 mm (2.9 in)
1941	99.4 mm (3.9 in)
1942	134.8 mm (5.3 in)
1943	76.4 mm (3.0 in)
1944	54.3 mm (2.1 in)
1945	92.3 mm (3.6 in)
1946	101.6 mm (4.0 in)
1947	67.4 mm (2.7 in)
1948	110.5 mm (4.4 in)
1949	59.9 mm (2.4 in)
1950	116.1 mm (4.6 in)
1951	127.0 mm (5.0 in)
1952	52.9 mm (2.1 in)
1953	151.7 mm (6.0 in)
1954	88.6 mm (3.5 in)
1955	83.7 mm (3.3 in)
1956	90.7 mm (3.6 in)
1957	120.0 mm (4.7 in)
1958	103.3 mm (4.1 in)
1959	79.5 mm (3.1 in)
1960	87.1 mm (3.4 in)
1961	84.4 mm (3.3 in)
1962	91.7 mm (3.6 in)
1963	107.2 mm (4.2 in)
1964	126.0 mm (5.0 in)
1965	126.5 mm (5.0 in)
1966	120.4 mm (4.7 in)
1967	76.1 mm (3.0 in)
1968	121.9 mm (4.8 in)
1969	102.3 mm (4.0 in)
1970	108.6 mm (4.3 in)
1971	101.4 mm (4.0 in)
1972	76.3 mm (3.0 in)
1973	71.6 mm (2.8 in)

Longest dry spell (CDD)

The longest dry spell of the year at Mill Creek, 1915 to 1973. The record is 75 days in 1967, marked on the chart; the median year is 34 days.

Longest dry spell (CDD) at Mill Creek by year
Year	Longest dry spell (CDD)
1915	22 days
1916	31 days
1917	73 days
1918	36 days
1919	54 days
1920	19 days
1921	22 days
1922	29 days
1923	35 days
1924	30 days
1925	64 days
1926	46 days
1927	45 days
1928	36 days
1929	43 days
1930	44 days
1931	73 days
1932	22 days
1933	36 days
1934	35 days
1935	27 days
1936	21 days
1937	27 days
1938	71 days
1939	52 days
1940	40 days
1941	19 days
1942	41 days
1943	41 days
1944	25 days
1945	29 days
1946	24 days
1947	22 days
1948	21 days
1949	24 days
1950	31 days
1951	54 days
1952	63 days
1953	34 days
1954	24 days
1955	48 days
1956	23 days
1957	45 days
1958	56 days
1959	18 days
1960	35 days
1961	40 days
1962	50 days
1963	27 days
1964	16 days
1965	31 days
1966	31 days
1967	75 days
1968	23 days
1969	48 days
1970	38 days
1971	23 days
1972	24 days
1973	23 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

54 years, 1916 to 1972

A day with at least 48.0 mm (1.9 in) of rain is expected about once in 2 years. A day with at least 104.0 mm (4.1 in) of rain is expected about once in 100 years.

Rainfall return levels at Mill Creek: the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	48.0 mm (1.9 in)
5 years	61.1 mm (2.4 in)
10 years	70.4 mm (2.8 in)
25 years	83.1 mm (3.3 in)
50 years	93.3 mm (3.7 in)
100 years	104.0 mm (4.1 in)	Longer than the 54 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, 54 years of values from 1916 to 1972.

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: 107.2 mm (4.2 in) in 1921; 96.8 mm (3.8 in) in 1931; 90.9 mm (3.6 in) in 1923.

Download the Data

Data for Mill Creek standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Mill Creek 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).