Mill Creek 2 Weather Records (USC00045629)

Record envelope, standing records and threshold days for Mill Creek 2 (USC00045629), California, United States, with 64 years of record.

Key Facts for Mill Creek 2

Mill Creek 2 (USC00045629) is a weather station in California, United States at 34.08 latitude and -117.03 longitude, 897 m (2,943 ft) above sea level.
The station reports from 1904 to 1967, 64 years of record.
1,464 records set at Mill Creek 2 still stand.
Records are tracked for tmax, tmin, prcp: an element needs 30 years of data to be eligible.
Mill Creek 2 set a daily record precipitation of 33.8 mm (1.3 in) on 23 August 1967.

About the Station

Location: California, United States, 34.08 latitude, -117.03 longitude.
Elevation: 897 m (2,943 ft).
Period of record: 1904 to 1967, 64 years.
Eligible elements: tmax, tmin, prcp.

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 2. 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 2, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	30.6 C (87.1 F)	-7.2 C (19.0 F)	n/a	n/a
Feb	28.9 C (84.0 F)	-3.3 C (26.1 F)	n/a	n/a
Mar	31.7 C (89.1 F)	-2.8 C (27.0 F)	n/a	n/a
Apr	34.4 C (93.9 F)	-0.6 C (30.9 F)	n/a	n/a
May	40.6 C (105.1 F)	0.0 C (32.0 F)	n/a	n/a
Jun	41.1 C (106.0 F)	4.4 C (39.9 F)	n/a	n/a
Jul	42.8 C (109.0 F)	7.2 C (45.0 F)	n/a	n/a
Aug	42.8 C (109.0 F)	6.1 C (43.0 F)	n/a	n/a
Sep	41.7 C (107.1 F)	5.6 C (42.1 F)	n/a	n/a
Oct	37.8 C (100.0 F)	1.1 C (34.0 F)	n/a	n/a
Nov	31.1 C (88.0 F)	-1.7 C (28.9 F)	n/a	n/a
Dec	30.6 C (87.1 F)	-3.3 C (26.1 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Mill Creek 2 still stand. 1949 holds the most, with 78.

Standing records at Mill Creek 2 by the year they were set
Year set	Standing records
1921	4
1933	74
1934	64
1935	42
1936	61
1937	50
1938	41
1939	53
1940	37
1941	29
1942	33
1943	31
1944	43
1945	34
1946	31
1947	39
1948	52
1949	78
1950	60
1951	53
1952	26
1953	31
1954	35
1955	52
1956	43
1957	43
1958	40
1959	25
1960	37
1961	22
1962	42
1963	38
1964	41
1965	48
1966	16
1967	16

All-Time Record Progression

1 new records

1 all-time records were set at Mill Creek 2 between 6 December 1966 and 6 December 1966. Each dot is a new record.

Wettest Day of Each Month

Dec: 167.1 mm (6.6 in)

The wettest day on record for each calendar month at Mill Creek 2. The most was 167.1 mm (6.6 in) on 6 December 1966.

Record daily precipitation for each month at Mill Creek 2
Month	Record daily precipitation (mm)	Date
Jan	115.3 mm (4.5 in)	23 January 1943
Feb	125.2 mm (4.9 in)	16 February 1927
Mar	91.9 mm (3.6 in)	12 March 1906
Apr	77.2 mm (3.0 in)	5 April 1926
May	41.9 mm (1.6 in)	3 May 1930
Jun	24.1 mm (0.9 in)	16 June 1918
Jul	18.3 mm (0.7 in)	18 July 1936
Aug	50.8 mm (2.0 in)	24 August 1935
Sep	68.1 mm (2.7 in)	25 September 1939
Oct	56.6 mm (2.2 in)	9 October 1930
Nov	86.9 mm (3.4 in)	23 November 1965
Dec	167.1 mm (6.6 in)	6 December 1966

Period of Record Coverage

1921 to 1967

36 years of record at Mill Creek 2, 1921 to 1967. 2 years have data for under 90 percent of days and are left out of rankings: 1921, 1967.

Days with data per year at Mill Creek 2
Year	Days with data	Share of year	Complete
1921	31	8%	No
1933	333	91%	Yes
1934	365	100%	Yes
1935	362	99%	Yes
1936	366	100%	Yes
1937	365	100%	Yes
1938	365	100%	Yes
1939	364	100%	Yes
1940	366	100%	Yes
1941	365	100%	Yes
1942	365	100%	Yes
1943	364	100%	Yes
1944	366	100%	Yes
1945	365	100%	Yes
1946	365	100%	Yes
1947	364	100%	Yes
1948	366	100%	Yes
1949	365	100%	Yes
1950	365	100%	Yes
1951	365	100%	Yes
1952	362	99%	Yes
1953	361	99%	Yes
1954	363	99%	Yes
1955	363	99%	Yes
1956	363	99%	Yes
1957	365	100%	Yes
1958	354	97%	Yes
1959	365	100%	Yes
1960	366	100%	Yes
1961	364	100%	Yes
1962	364	100%	Yes
1963	365	100%	Yes
1964	366	100%	Yes
1965	365	100%	Yes
1966	362	99%	Yes
1967	101	28%	No

Latest Records

Latest records at Mill Creek 2
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
23 August 1967	Mill Creek 2, US	daily rain	33.8 mm (1.3 in)	24.9 mm (1.0 in)	32 years	44 of 100 (Notable)
13 June 1967	Mill Creek 2, US	daily rain	9.1 mm (0.36 in)	9.1 mm (0.36 in)	60 years	20 of 100 (Routine)
31 May 1967	Mill Creek 2, US	daily low max	10.6 C (51.1 F)	3.8 C (6.8 F)	21 years	16 of 100 (Routine)
31 May 1967	Mill Creek 2, US	daily rain	2.5 mm (0.10 in)	0.2 mm (0.01 in)	30 years	15 of 100 (Routine)
30 May 1967	Mill Creek 2, US	daily low max	12.2 C (54.0 F)	1.1 C (2.0 F)	21 years	12 of 100 (Routine)
29 May 1967	Mill Creek 2, US	daily rain	4.6 mm (0.18 in)	0.8 mm (0.03 in)	29 years	14 of 100 (Routine)
23 May 1967	Mill Creek 2, US	daily high max	33.9 C (93.0 F)	0.6 C (1.1 F)	17 years	10 of 100 (Routine)
22 May 1967	Mill Creek 2, US	daily high min	18.9 C (66.0 F)	1.7 C (3.1 F)	32 years	17 of 100 (Routine)
22 May 1967	Mill Creek 2, US	daily high max	36.7 C (98.1 F)	2.3 C (4.1 F)	24 years	15 of 100 (Routine)
21 May 1967	Mill Creek 2, US	daily high max	37.2 C (99.0 F)	2.2 C (4.0 F)	25 years	15 of 100 (Routine)
21 May 1967	Mill Creek 2, US	daily high min	22.2 C (72.0 F)	1.6 C (2.9 F)	24 years	14 of 100 (Routine)
1 May 1967	Mill Creek 2, US	daily low min (Tie)	1.7 C (35.1 F)	tie	16 years	2 of 100 (Routine)
30 April 1967	Mill Creek 2, US	daily low min (Tie)	1.7 C (35.1 F)	tie	16 years	2 of 100 (Routine)
25 April 1967	Mill Creek 2, US	daily low min (Tie)	1.7 C (35.1 F)	tie	4 years	1 of 100 (Routine)
23 April 1967	Mill Creek 2, US	daily low min	0.6 C (33.1 F)	0.5 C (0.9 F)	6 years	7 of 100 (Routine)
21 April 1967	Mill Creek 2, US	daily low min	0.6 C (33.1 F)	0.5 C (0.9 F)	22 years	11 of 100 (Routine)
21 April 1967	Mill Creek 2, US	daily low max (Tie)	9.4 C (48.9 F)	tie	9 years	1 of 100 (Routine)
19 April 1967	Mill Creek 2, US	daily rain	28.7 mm (1.1 in)	8.4 mm (0.33 in)	62 years	31 of 100 (Routine)
16 April 1967	Mill Creek 2, US	daily low min	0.0 C (32.0 F)	3.9 C (7.0 F)	26 years	21 of 100 (Routine)
12 April 1967	Mill Creek 2, US	daily low min (Tie)	0.0 C (32.0 F)	tie	13 years	2 of 100 (Routine)

Climate Trend

33 complete years, 1934 to 1966

One stripe for each of 33 complete years at Mill Creek 2, 1934 to 1966. Blue stripes are years cooler than the station's own mean of 17.5 C (63.4 F); red stripes are warmer. The coolest year was 1944, at 16.1 C (61.1 F), and the warmest was 1934, at 19.1 C (66.5 F). The strongest colour marks a difference of 1.7 C (3.1 F).

Annual mean temperature at Mill Creek 2 as warming stripes, 1934 to 1966
Year	Annual mean temperature	Difference from the station mean
1934	19.1 C	+1.69 C
1935	17.4 C	-0.01 C
1936	18.7 C	+1.20 C
1937	18.0 C	+0.52 C
1938	17.7 C	+0.21 C
1939	18.0 C	+0.54 C
1940	18.5 C	+1.01 C
1941	17.0 C	-0.45 C
1942	17.6 C	+0.11 C
1943	17.9 C	+0.43 C
1944	16.1 C	-1.31 C
1945	16.7 C	-0.74 C
1946	17.4 C	-0.04 C
1947	17.6 C	+0.17 C
1948	16.9 C	-0.59 C
1949	16.9 C	-0.59 C
1950	18.3 C	+0.80 C
1951	17.1 C	-0.37 C
1952	16.7 C	-0.71 C
1953	17.4 C	-0.01 C
1954	17.6 C	+0.11 C
1955	16.5 C	-0.93 C
1956	17.1 C	-0.31 C
1957	16.6 C	-0.86 C
1958	17.7 C	+0.29 C
1959	17.9 C	+0.48 C
1960	18.1 C	+0.62 C
1961	17.8 C	+0.33 C
1962	17.6 C	+0.13 C
1963	17.0 C	-0.41 C
1964	16.8 C	-0.67 C
1965	16.7 C	-0.72 C
1966	17.6 C	+0.16 C

The annual mean temperature here has fallen by 0.25 C (0.01 to 0.49) per decade over 1934 to 1966. In Fahrenheit: 0.45 F (0.03 to 0.87) per decade. The slope is a straight line fitted to 33 complete years; the brackets give its 95 percent interval.

Fitted temperature trends per decade at Mill Creek 2
Measure	Per decade (C)	Per decade (F)	Period	Complete years	Reading
Annual mean temperature	-0.25 C (-0.49 to -0.01) per decade	-0.45 F (-0.87 to -0.03) per decade	1934 to 1966	33	Fall
Mean daily maximum	-0.1 C (-0.4 to 0.2) per decade	-0.2 F (-0.7 to 0.3) per decade	1934 to 1966	33	Not clearly different from zero
Mean daily minimum	-0.4 C (-0.6 to -0.2) per decade	-0.7 F (-1.1 to -0.3) per decade	1934 to 1966	33	Fall

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

1904 to 1967

Yearly extremes at Mill Creek 2: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	42.8 C (109.0 F)	1933	40.0 C (104.0 F)	36
Coldest night (TNn)	-7.2 C (19.0 F)	1937	-1.7 C (28.9 F)	36
Wettest day (Rx1day)	167.1 mm (6.6 in)	1966	60.2 mm (2.4 in)	64
Wettest five days (Rx5day)	428.8 mm (16.9 in)	1966	103.1 mm (4.1 in)	64
Longest dry spell (CDD)	151 days	1944	69 days	64

Hottest day (TXx)

The hottest day of the year at Mill Creek 2, 1904 to 1967. The record is 42.8 C (109.0 F) in 1933, marked on the chart; the median year is 40.0 C (104.0 F).

Hottest day (TXx) at Mill Creek 2 by year
Year	Hottest day (TXx)
1904	n/a
1905	n/a
1906	n/a
1907	n/a
1908	n/a
1909	n/a
1910	n/a
1911	n/a
1912	n/a
1913	n/a
1914	n/a
1915	n/a
1916	n/a
1917	n/a
1918	n/a
1919	n/a
1920	n/a
1921	26.7 C (80.1 F)
1922	n/a
1923	n/a
1924	n/a
1925	n/a
1926	n/a
1927	n/a
1928	n/a
1929	n/a
1930	n/a
1931	n/a
1932	n/a
1933	42.8 C (109.0 F)
1934	42.8 C (109.0 F)
1935	38.3 C (100.9 F)
1936	41.1 C (106.0 F)
1937	40.0 C (104.0 F)
1938	40.6 C (105.1 F)
1939	39.4 C (102.9 F)
1940	41.7 C (107.1 F)
1941	40.0 C (104.0 F)
1942	41.7 C (107.1 F)
1943	41.7 C (107.1 F)
1944	41.1 C (106.0 F)
1945	38.9 C (102.0 F)
1946	40.6 C (105.1 F)
1947	41.7 C (107.1 F)
1948	40.0 C (104.0 F)
1949	39.4 C (102.9 F)
1950	41.1 C (106.0 F)
1951	40.6 C (105.1 F)
1952	38.9 C (102.0 F)
1953	40.0 C (104.0 F)
1954	40.0 C (104.0 F)
1955	41.7 C (107.1 F)
1956	38.9 C (102.0 F)
1957	39.4 C (102.9 F)
1958	40.0 C (104.0 F)
1959	40.0 C (104.0 F)
1960	42.2 C (108.0 F)
1961	41.1 C (106.0 F)
1962	40.0 C (104.0 F)
1963	37.8 C (100.0 F)
1964	38.3 C (100.9 F)
1965	38.9 C (102.0 F)
1966	39.4 C (102.9 F)
1967	37.2 C (99.0 F)

Coldest night (TNn)

The coldest night of the year at Mill Creek 2, 1904 to 1967. The record is -7.2 C (19.0 F) in 1937, marked on the chart; the median year is -1.7 C (28.9 F).

Coldest night (TNn) at Mill Creek 2 by year
Year	Coldest night (TNn)
1904	n/a
1905	n/a
1906	n/a
1907	n/a
1908	n/a
1909	n/a
1910	n/a
1911	n/a
1912	n/a
1913	n/a
1914	n/a
1915	n/a
1916	n/a
1917	n/a
1918	n/a
1919	n/a
1920	n/a
1921	3.3 C (37.9 F)
1922	n/a
1923	n/a
1924	n/a
1925	n/a
1926	n/a
1927	n/a
1928	n/a
1929	n/a
1930	n/a
1931	n/a
1932	n/a
1933	-0.6 C (30.9 F)
1934	1.1 C (34.0 F)
1935	-2.8 C (27.0 F)
1936	-0.6 C (30.9 F)
1937	-7.2 C (19.0 F)
1938	0.6 C (33.1 F)
1939	-3.3 C (26.1 F)
1940	1.1 C (34.0 F)
1941	-0.6 C (30.9 F)
1942	-2.2 C (28.0 F)
1943	0.0 C (32.0 F)
1944	-1.7 C (28.9 F)
1945	-1.7 C (28.9 F)
1946	-0.6 C (30.9 F)
1947	-1.1 C (30.0 F)
1948	-2.2 C (28.0 F)
1949	-6.7 C (19.9 F)
1950	-3.3 C (26.1 F)
1951	-3.3 C (26.1 F)
1952	-2.2 C (28.0 F)
1953	-2.2 C (28.0 F)
1954	-1.7 C (28.9 F)
1955	-1.7 C (28.9 F)
1956	-1.7 C (28.9 F)
1957	-5.6 C (21.9 F)
1958	-1.7 C (28.9 F)
1959	-1.1 C (30.0 F)
1960	-3.3 C (26.1 F)
1961	0.6 C (33.1 F)
1962	-3.3 C (26.1 F)
1963	-6.1 C (21.0 F)
1964	-1.7 C (28.9 F)
1965	-2.2 C (28.0 F)
1966	-1.7 C (28.9 F)
1967	-0.6 C (30.9 F)

Wettest day (Rx1day)

The wettest day of the year at Mill Creek 2, 1904 to 1967. The record is 167.1 mm (6.6 in) in 1966, marked on the chart; the median year is 60.2 mm (2.4 in).

Wettest day (Rx1day) at Mill Creek 2 by year
Year	Wettest day (Rx1day)
1904	42.7 mm (1.7 in)
1905	71.6 mm (2.8 in)
1906	91.9 mm (3.6 in)
1907	48.3 mm (1.9 in)
1908	56.6 mm (2.2 in)
1909	103.1 mm (4.1 in)
1910	49.5 mm (1.9 in)
1911	48.3 mm (1.9 in)
1912	48.5 mm (1.9 in)
1913	41.7 mm (1.6 in)
1914	87.1 mm (3.4 in)
1915	56.6 mm (2.2 in)
1916	102.9 mm (4.1 in)
1917	30.2 mm (1.2 in)
1918	73.7 mm (2.9 in)
1919	50.8 mm (2.0 in)
1920	51.1 mm (2.0 in)
1921	74.2 mm (2.9 in)
1922	51.1 mm (2.0 in)
1923	40.4 mm (1.6 in)
1924	51.3 mm (2.0 in)
1925	50.8 mm (2.0 in)
1926	77.2 mm (3.0 in)
1927	125.2 mm (4.9 in)
1928	76.5 mm (3.0 in)
1929	72.4 mm (2.9 in)
1930	56.6 mm (2.2 in)
1931	63.0 mm (2.5 in)
1932	62.0 mm (2.4 in)
1933	53.3 mm (2.1 in)
1934	70.4 mm (2.8 in)
1935	50.8 mm (2.0 in)
1936	83.6 mm (3.3 in)
1937	83.8 mm (3.3 in)
1938	90.7 mm (3.6 in)
1939	68.1 mm (2.7 in)
1940	62.7 mm (2.5 in)
1941	61.0 mm (2.4 in)
1942	40.6 mm (1.6 in)
1943	115.3 mm (4.5 in)
1944	82.6 mm (3.3 in)
1945	86.4 mm (3.4 in)
1946	37.1 mm (1.5 in)
1947	34.5 mm (1.4 in)
1948	33.5 mm (1.3 in)
1949	61.7 mm (2.4 in)
1950	42.7 mm (1.7 in)
1951	102.6 mm (4.0 in)
1952	63.5 mm (2.5 in)
1953	34.5 mm (1.4 in)
1954	80.3 mm (3.2 in)
1955	36.3 mm (1.4 in)
1956	110.2 mm (4.3 in)
1957	52.1 mm (2.1 in)
1958	64.3 mm (2.5 in)
1959	31.2 mm (1.2 in)
1960	42.9 mm (1.7 in)
1961	59.4 mm (2.3 in)
1962	42.4 mm (1.7 in)
1963	93.0 mm (3.7 in)
1964	35.8 mm (1.4 in)
1965	86.9 mm (3.4 in)
1966	167.1 mm (6.6 in)
1967	49.0 mm (1.9 in)

Wettest five days (Rx5day)

The wettest five days of the year at Mill Creek 2, 1904 to 1967. The record is 428.8 mm (16.9 in) in 1966, marked on the chart; the median year is 103.1 mm (4.1 in).

Wettest five days (Rx5day) at Mill Creek 2 by year
Year	Wettest five days (Rx5day)
1904	91.2 mm (3.6 in)
1905	138.4 mm (5.4 in)
1906	160.9 mm (6.3 in)
1907	68.9 mm (2.7 in)
1908	120.5 mm (4.7 in)
1909	146.2 mm (5.8 in)
1910	115.8 mm (4.6 in)
1911	93.7 mm (3.7 in)
1912	106.7 mm (4.2 in)
1913	73.3 mm (2.9 in)
1914	189.2 mm (7.4 in)
1915	69.6 mm (2.7 in)
1916	179.8 mm (7.1 in)
1917	75.4 mm (3.0 in)
1918	152.4 mm (6.0 in)
1919	63.5 mm (2.5 in)
1920	103.2 mm (4.1 in)
1921	224.0 mm (8.8 in)
1922	73.7 mm (2.9 in)
1923	51.9 mm (2.0 in)
1924	105.1 mm (4.1 in)
1925	63.5 mm (2.5 in)
1926	205.7 mm (8.1 in)
1927	294.1 mm (11.6 in)
1928	88.7 mm (3.5 in)
1929	88.7 mm (3.5 in)
1930	149.3 mm (5.9 in)
1931	81.0 mm (3.2 in)
1932	104.9 mm (4.1 in)
1933	94.5 mm (3.7 in)
1934	130.1 mm (5.1 in)
1935	94.4 mm (3.7 in)
1936	173.8 mm (6.8 in)
1937	144.0 mm (5.7 in)
1938	263.3 mm (10.4 in)
1939	82.6 mm (3.3 in)
1940	100.5 mm (4.0 in)
1941	111.2 mm (4.4 in)
1942	57.2 mm (2.3 in)
1943	195.6 mm (7.7 in)
1944	162.7 mm (6.4 in)
1945	168.1 mm (6.6 in)
1946	70.9 mm (2.8 in)
1947	58.4 mm (2.3 in)
1948	67.8 mm (2.7 in)
1949	84.4 mm (3.3 in)
1950	70.6 mm (2.8 in)
1951	147.3 mm (5.8 in)
1952	147.3 mm (5.8 in)
1953	48.4 mm (1.9 in)
1954	116.2 mm (4.6 in)
1955	70.1 mm (2.8 in)
1956	202.8 mm (8.0 in)
1957	77.7 mm (3.1 in)
1958	104.4 mm (4.1 in)
1959	82.7 mm (3.3 in)
1960	65.1 mm (2.6 in)
1961	65.5 mm (2.6 in)
1962	97.2 mm (3.8 in)
1963	102.9 mm (4.1 in)
1964	67.2 mm (2.6 in)
1965	198.2 mm (7.8 in)
1966	428.8 mm (16.9 in)
1967	105.1 mm (4.1 in)

Longest dry spell (CDD)

The longest dry spell of the year at Mill Creek 2, 1904 to 1967. The record is 151 days in 1944, marked on the chart; the median year is 69 days.

Longest dry spell (CDD) at Mill Creek 2 by year
Year	Longest dry spell (CDD)
1904	19 days
1905	27 days
1906	24 days
1907	27 days
1908	59 days
1909	58 days
1910	80 days
1911	71 days
1912	67 days
1913	39 days
1914	109 days
1915	44 days
1916	53 days
1917	28 days
1918	56 days
1919	35 days
1920	17 days
1921	29 days
1922	26 days
1923	11 days
1924	38 days
1925	96 days
1926	98 days
1927	96 days
1928	113 days
1929	72 days
1930	128 days
1931	66 days
1932	118 days
1933	64 days
1934	65 days
1935	69 days
1936	62 days
1937	88 days
1938	66 days
1939	69 days
1940	121 days
1941	63 days
1942	102 days
1943	104 days
1944	151 days
1945	60 days
1946	67 days
1947	73 days
1948	137 days
1949	93 days
1950	92 days
1951	62 days
1952	86 days
1953	71 days
1954	71 days
1955	93 days
1956	77 days
1957	91 days
1958	78 days
1959	94 days
1960	66 days
1961	83 days
1962	111 days
1963	55 days
1964	49 days
1965	55 days
1966	130 days
1967	70 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

49 years, 1908 to 1966

A day with at least 62.9 mm (2.5 in) of rain is expected about once in 2 years. A day with at least 160.7 mm (6.3 in) of rain is expected about once in 100 years.

Rainfall return levels at Mill Creek 2: the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	62.9 mm (2.5 in)
5 years	88.0 mm (3.5 in)
10 years	105.0 mm (4.1 in)
25 years	127.0 mm (5.0 in)
50 years	143.8 mm (5.7 in)	Longer than the 49 years of record
100 years	160.7 mm (6.3 in)	Longer than the 49 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, 49 years of values from 1908 to 1966.

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: 167.1 mm (6.6 in) in 1966; 125.2 mm (4.9 in) in 1927; 115.3 mm (4.5 in) in 1943.

Download the Data

Data for Mill Creek 2 standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Mill Creek 2 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).