Big Dalton Dam Fc223C Weather Records (USC00040758)

Record envelope, standing records and threshold days for Big Dalton Dam Fc223C (USC00040758), California, United States, with 51 years of record.

Key Facts for Big Dalton Dam Fc223C

Big Dalton Dam Fc223C (USC00040758) is a weather station in California, United States at 34.17 latitude and -117.82 longitude, 485 m (1,591 ft) above sea level.
The station reports from 1930 to 1980, 51 years of record.
112 records set at Big Dalton Dam Fc223C still stand.
Records are tracked for prcp, snow, snwd: an element needs 30 years of data to be eligible.
Big Dalton Dam Fc223C set a daily record precipitation of 5.3 mm (0.21 in) on 21 May 1980.

About the Station

Location: California, United States, 34.17 latitude, -117.82 longitude.
Elevation: 485 m (1,591 ft).
Period of record: 1930 to 1980, 51 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 Big Dalton Dam Fc223C. 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 Big Dalton Dam Fc223C, 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	25.0 C (77.0 F)	0.6 C (33.1 F)	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

112 standing records

112 records at Big Dalton Dam Fc223C still stand. 1966 holds the most, with 112.

All-Time Record Progression

1 new records

1 all-time records were set at Big Dalton Dam Fc223C between 25 January 1969 and 25 January 1969. Each dot is a new record.

Wettest Day of Each Month

Jan: 243.8 mm (9.6 in)

The wettest day on record for each calendar month at Big Dalton Dam Fc223C. The most was 243.8 mm (9.6 in) on 25 January 1969.

Record daily precipitation for each month at Big Dalton Dam Fc223C
Month	Record daily precipitation (mm)	Date
Jan	243.8 mm (9.6 in)	25 January 1969
Feb	129.0 mm (5.1 in)	25 February 1969
Mar	183.6 mm (7.2 in)	2 March 1938
Apr	77.0 mm (3.0 in)	26 April 1931
May	57.4 mm (2.3 in)	9 May 1977
Jun	13.2 mm (0.5 in)	2 June 1948
Jul	4.3 mm (0.17 in)	1 July 1935
Aug	55.4 mm (2.2 in)	18 August 1977
Sep	98.8 mm (3.9 in)	11 September 1976
Oct	95.3 mm (3.8 in)	18 October 1934
Nov	111.0 mm (4.4 in)	29 November 1970
Dec	179.1 mm (7.1 in)	6 December 1966

Period of Record Coverage

1966 to 1966

1 years of record at Big Dalton Dam Fc223C, 1966 to 1966. 1 years have data for under 90 percent of days and are left out of rankings: 1966.

Latest Records

Latest records at Big Dalton Dam Fc223C
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
21 May 1980	Big Dalton Dam Fc223C, US	daily rain	5.3 mm (0.21 in)	1.7 mm (0.07 in)	23 years	13 of 100 (Routine)
3 March 1980	Big Dalton Dam Fc223C, US	daily rain	55.9 mm (2.2 in)	0.5 mm (0.02 in)	37 years	16 of 100 (Routine)
29 January 1980	Big Dalton Dam Fc223C, US	daily rain	91.4 mm (3.6 in)	57.9 mm (2.3 in)	28 years	32 of 100 (Routine)
11 January 1980	Big Dalton Dam Fc223C, US	daily rain	67.3 mm (2.6 in)	25.1 mm (1.0 in)	49 years	27 of 100 (Routine)
10 January 1980	Big Dalton Dam Fc223C, US	daily rain	48.3 mm (1.9 in)	1.8 mm (0.07 in)	1 year	5 of 100 (Routine)
9 January 1980	Big Dalton Dam Fc223C, US	daily rain	30.5 mm (1.2 in)	7.6 mm (0.30 in)	49 years	21 of 100 (Routine)
21 October 1979	Big Dalton Dam Fc223C, US	daily rain	38.4 mm (1.5 in)	17.6 mm (0.7 in)	21 years	23 of 100 (Routine)
20 October 1979	Big Dalton Dam Fc223C, US	daily rain	46.5 mm (1.8 in)	41.9 mm (1.6 in)	21 years	41 of 100 (Notable)
28 March 1979	Big Dalton Dam Fc223C, US	daily rain	68.6 mm (2.7 in)	45.0 mm (1.8 in)	32 years	34 of 100 (Routine)
27 March 1979	Big Dalton Dam Fc223C, US	daily rain	24.6 mm (1.0 in)	8.1 mm (0.32 in)	40 years	20 of 100 (Routine)
19 March 1979	Big Dalton Dam Fc223C, US	daily rain	26.9 mm (1.1 in)	10.1 mm (0.4 in)	32 years	18 of 100 (Routine)
31 January 1979	Big Dalton Dam Fc223C, US	daily rain	71.6 mm (2.8 in)	55.3 mm (2.2 in)	48 years	37 of 100 (Notable)
14 September 1978	Big Dalton Dam Fc223C, US	daily rain	3.3 mm (0.13 in)	3.3 mm (0.13 in)	48 years	20 of 100 (Routine)
7 September 1978	Big Dalton Dam Fc223C, US	daily rain	3.0 mm (0.12 in)	2.0 mm (0.08 in)	3 years	5 of 100 (Routine)
6 September 1978	Big Dalton Dam Fc223C, US	daily rain	42.9 mm (1.7 in)	28.4 mm (1.1 in)	12 years	24 of 100 (Routine)
16 April 1978	Big Dalton Dam Fc223C, US	daily rain	33.5 mm (1.3 in)	13.9 mm (0.5 in)	1 year	15 of 100 (Routine)
7 April 1978	Big Dalton Dam Fc223C, US	daily rain	29.2 mm (1.1 in)	19.5 mm (0.8 in)	11 years	22 of 100 (Routine)
5 March 1978	Big Dalton Dam Fc223C, US	daily rain	123.2 mm (4.9 in)	85.6 mm (3.4 in)	35 years	54 of 100 (Notable)
1 March 1978	Big Dalton Dam Fc223C, US	daily rain	104.1 mm (4.1 in)	18.0 mm (0.7 in)	40 years	24 of 100 (Routine)
10 February 1978	Big Dalton Dam Fc223C, US	daily rain	109.2 mm (4.3 in)	13.9 mm (0.5 in)	15 years	14 of 100 (Routine)

Extremes by Year

1930 to 1980

Yearly extremes at Big Dalton Dam Fc223C: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	25.0 C (77.0 F)	1966	25.0 C (77.0 F)	1
Coldest night (TNn)	0.6 C (33.1 F)	1966	0.6 C (33.1 F)	1
Wettest day (Rx1day)	243.8 mm (9.6 in)	1969	83.4 mm (3.3 in)	50
Wettest five days (Rx5day)	484.6 mm (19.1 in)	1969	140.0 mm (5.5 in)	50
Longest dry spell (CDD)	196 days	1954	107 days	50

Hottest day (TXx)

The hottest day of the year at Big Dalton Dam Fc223C, 1930 to 1980. The record is 25.0 C (77.0 F) in 1966, marked on the chart; the median year is 25.0 C (77.0 F).

Hottest day (TXx) at Big Dalton Dam Fc223C by year
Year	Hottest day (TXx)
1930	n/a
1931	n/a
1932	n/a
1933	n/a
1934	n/a
1935	n/a
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
1959	n/a
1960	n/a
1961	n/a
1962	n/a
1963	n/a
1964	n/a
1965	n/a
1966	25.0 C (77.0 F)
1967	n/a
1968	n/a
1969	n/a
1970	n/a
1971	n/a
1972	n/a
1973	n/a
1974	n/a
1975	n/a
1976	n/a
1977	n/a
1978	n/a
1979	n/a
1980	n/a

Coldest night (TNn)

The coldest night of the year at Big Dalton Dam Fc223C, 1930 to 1980. The record is 0.6 C (33.1 F) in 1966, marked on the chart; the median year is 0.6 C (33.1 F).

Coldest night (TNn) at Big Dalton Dam Fc223C by year
Year	Coldest night (TNn)
1930	n/a
1931	n/a
1932	n/a
1933	n/a
1934	n/a
1935	n/a
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
1959	n/a
1960	n/a
1961	n/a
1962	n/a
1963	n/a
1964	n/a
1965	n/a
1966	0.6 C (33.1 F)
1967	n/a
1968	n/a
1969	n/a
1970	n/a
1971	n/a
1972	n/a
1973	n/a
1974	n/a
1975	n/a
1976	n/a
1977	n/a
1978	n/a
1979	n/a
1980	n/a

Wettest day (Rx1day)

The wettest day of the year at Big Dalton Dam Fc223C, 1930 to 1980. The record is 243.8 mm (9.6 in) in 1969, marked on the chart; the median year is 83.4 mm (3.3 in).

Wettest day (Rx1day) at Big Dalton Dam Fc223C by year
Year	Wettest day (Rx1day)
1930	61.2 mm (2.4 in)
1931	83.6 mm (3.3 in)
1932	83.1 mm (3.3 in)
1933	143.0 mm (5.6 in)
1934	163.6 mm (6.4 in)
1935	74.4 mm (2.9 in)
1936	85.6 mm (3.4 in)
1937	99.8 mm (3.9 in)
1938	183.6 mm (7.2 in)
1939	91.9 mm (3.6 in)
1940	87.6 mm (3.4 in)
1941	81.0 mm (3.2 in)
1942	33.0 mm (1.3 in)
1943	174.8 mm (6.9 in)
1944	122.2 mm (4.8 in)
1945	171.2 mm (6.7 in)
1946	101.6 mm (4.0 in)
1947	41.7 mm (1.6 in)
1948	53.3 mm (2.1 in)
1949	79.8 mm (3.1 in)
1950	61.2 mm (2.4 in)
1951	84.1 mm (3.3 in)
1952	106.4 mm (4.2 in)
1953	39.4 mm (1.6 in)
1954	59.7 mm (2.4 in)
1955	45.2 mm (1.8 in)
1956	198.1 mm (7.8 in)
1957	82.8 mm (3.3 in)
1959	77.5 mm (3.1 in)
1960	40.6 mm (1.6 in)
1961	74.2 mm (2.9 in)
1962	73.2 mm (2.9 in)
1963	95.3 mm (3.8 in)
1964	48.3 mm (1.9 in)
1965	101.1 mm (4.0 in)
1966	179.1 mm (7.1 in)
1967	74.7 mm (2.9 in)
1968	85.9 mm (3.4 in)
1969	243.8 mm (9.6 in)
1970	111.0 mm (4.4 in)
1971	83.1 mm (3.3 in)
1972	34.3 mm (1.4 in)
1973	99.8 mm (3.9 in)
1974	77.7 mm (3.1 in)
1975	50.8 mm (2.0 in)
1976	98.8 mm (3.9 in)
1977	59.4 mm (2.3 in)
1978	123.2 mm (4.9 in)
1979	71.6 mm (2.8 in)
1980	91.4 mm (3.6 in)

Wettest five days (Rx5day)

The wettest five days of the year at Big Dalton Dam Fc223C, 1930 to 1980. The record is 484.6 mm (19.1 in) in 1969, marked on the chart; the median year is 140.0 mm (5.5 in).

Wettest five days (Rx5day) at Big Dalton Dam Fc223C by year
Year	Wettest five days (Rx5day)
1930	114.1 mm (4.5 in)
1931	136.2 mm (5.4 in)
1932	140.2 mm (5.5 in)
1933	177.3 mm (7.0 in)
1934	318.6 mm (12.5 in)
1935	80.8 mm (3.2 in)
1936	203.7 mm (8.0 in)
1937	134.6 mm (5.3 in)
1938	438.4 mm (17.3 in)
1939	139.7 mm (5.5 in)
1940	125.4 mm (4.9 in)
1941	165.2 mm (6.5 in)
1942	60.7 mm (2.4 in)
1943	193.1 mm (7.6 in)
1944	241.8 mm (9.5 in)
1945	286.3 mm (11.3 in)
1946	143.7 mm (5.7 in)
1947	70.9 mm (2.8 in)
1948	78.2 mm (3.1 in)
1949	125.2 mm (4.9 in)
1950	78.3 mm (3.1 in)
1951	152.4 mm (6.0 in)
1952	182.8 mm (7.2 in)
1953	39.4 mm (1.6 in)
1954	105.7 mm (4.2 in)
1955	85.6 mm (3.4 in)
1956	283.2 mm (11.1 in)
1957	152.2 mm (6.0 in)
1959	103.5 mm (4.1 in)
1960	72.8 mm (2.9 in)
1961	89.3 mm (3.5 in)
1962	186.9 mm (7.4 in)
1963	134.9 mm (5.3 in)
1964	79.5 mm (3.1 in)
1965	237.5 mm (9.4 in)
1966	450.6 mm (17.7 in)
1967	191.6 mm (7.5 in)
1968	97.6 mm (3.8 in)
1969	484.6 mm (19.1 in)
1970	164.5 mm (6.5 in)
1971	174.8 mm (6.9 in)
1972	61.2 mm (2.4 in)
1973	174.2 mm (6.9 in)
1974	262.1 mm (10.3 in)
1975	111.8 mm (4.4 in)
1976	127.9 mm (5.0 in)
1977	133.9 mm (5.3 in)
1978	371.6 mm (14.6 in)
1979	124.7 mm (4.9 in)
1980	167.6 mm (6.6 in)

Longest dry spell (CDD)

The longest dry spell of the year at Big Dalton Dam Fc223C, 1930 to 1980. The record is 196 days in 1954, marked on the chart; the median year is 107 days.

Longest dry spell (CDD) at Big Dalton Dam Fc223C by year
Year	Longest dry spell (CDD)
1930	101 days
1931	46 days
1932	118 days
1933	147 days
1934	70 days
1935	54 days
1936	126 days
1937	187 days
1938	99 days
1939	118 days
1940	150 days
1941	77 days
1942	58 days
1943	137 days
1944	133 days
1945	56 days
1946	125 days
1947	73 days
1948	136 days
1949	139 days
1950	91 days
1951	107 days
1952	108 days
1953	146 days
1954	196 days
1955	166 days
1956	75 days
1957	118 days
1959	76 days
1960	157 days
1961	106 days
1962	121 days
1963	84 days
1964	100 days
1965	55 days
1966	132 days
1967	80 days
1968	77 days
1969	101 days
1970	145 days
1971	127 days
1972	49 days
1973	168 days
1974	120 days
1975	79 days
1976	85 days
1977	83 days
1978	127 days
1979	84 days
1980	69 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, 1930 to 1979

A day with at least 83.0 mm (3.3 in) of rain is expected about once in 2 years. A day with at least 265.8 mm (10.5 in) of rain is expected about once in 100 years.

Rainfall return levels at Big Dalton Dam Fc223C: the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	83.0 mm (3.3 in)
5 years	122.6 mm (4.8 in)
10 years	152.1 mm (6.0 in)
25 years	193.9 mm (7.6 in)
50 years	228.3 mm (9.0 in)	Longer than the 49 years of record
100 years	265.8 mm (10.5 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 1930 to 1979.

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: 243.8 mm (9.6 in) in 1969; 198.1 mm (7.8 in) in 1956; 183.6 mm (7.2 in) in 1938.

Download the Data

Data for Big Dalton Dam Fc223C standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Big Dalton Dam Fc223C 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).