San Gabriel Dam Fc425B-E Weather Records (USC00047779)

Record envelope, standing records and threshold days for San Gabriel Dam Fc425B-E (USC00047779), California, United States, with 79 years of record.

Key Facts for San Gabriel Dam Fc425B-E

San Gabriel Dam Fc425B-E (USC00047779) is a weather station in California, United States at 34.21 latitude and -117.86 longitude, 451 m (1,481 ft) above sea level.
The station reports from 1948 to 2026, 79 years of record.
120 records set at San Gabriel Dam Fc425B-E still stand.
Records are tracked for prcp, snow, snwd: an element needs 30 years of data to be eligible.
San Gabriel Dam Fc425B-E set a daily record precipitation of 31.5 mm (1.2 in) on 2 January 2026.

About the Station

Location: California, United States, 34.21 latitude, -117.86 longitude.
Elevation: 451 m (1,481 ft).
Period of record: 1948 to 2026, 79 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 San Gabriel Dam Fc425B-E. 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 San Gabriel Dam Fc425B-E, 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	35.0 C (95.0 F)	1.7 C (35.1 F)	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

120 standing records

120 records at San Gabriel Dam Fc425B-E still stand. 2012 holds the most, with 120.

Wettest Day of Each Month

Jan: 313.9 mm (12.4 in)

The wettest day on record for each calendar month at San Gabriel Dam Fc425B-E. The most was 313.9 mm (12.4 in) on 25 January 1969.

Record daily precipitation for each month at San Gabriel Dam Fc425B-E
Month	Record daily precipitation (mm)	Date
Jan	313.9 mm (12.4 in)	25 January 1969
Feb	196.9 mm (7.8 in)	17 February 1980
Mar	152.4 mm (6.0 in)	1 March 1991
Apr	80.3 mm (3.2 in)	3 April 1958
May	83.8 mm (3.3 in)	13 May 1998
Jun	29.5 mm (1.2 in)	6 June 1993
Jul	11.2 mm (0.4 in)	19 July 2015
Aug	147.3 mm (5.8 in)	21 August 2023
Sep	110.5 mm (4.4 in)	11 September 1976
Oct	151.6 mm (6.0 in)	20 October 2004
Nov	153.4 mm (6.0 in)	17 November 1965
Dec	193.0 mm (7.6 in)	29 December 1965

Period of Record Coverage

2012 to 2012

1 years of record at San Gabriel Dam Fc425B-E, 2012 to 2012. 1 years have data for under 90 percent of days and are left out of rankings: 2012.

Latest Records

Latest records at San Gabriel Dam Fc425B-E
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
2 January 2026	San Gabriel Dam Fc425B-E, US	daily rain	31.5 mm (1.2 in)	11.4 mm (0.4 in)	15 years	14 of 100 (Routine)
25 December 2025	San Gabriel Dam Fc425B-E, US	daily rain	83.3 mm (3.3 in)	13.4 mm (0.5 in)	42 years	23 of 100 (Routine)
16 November 2025	San Gabriel Dam Fc425B-E, US	daily rain	89.7 mm (3.5 in)	50.1 mm (2.0 in)	60 years	46 of 100 (Notable)
15 October 2025	San Gabriel Dam Fc425B-E, US	daily rain	70.1 mm (2.8 in)	64.8 mm (2.6 in)	44 years	54 of 100 (Notable)
28 September 2025	San Gabriel Dam Fc425B-E, US	daily rain	2.0 mm (0.08 in)	0.5 mm (0.02 in)	58 years	20 of 100 (Routine)
4 June 2025	San Gabriel Dam Fc425B-E, US	daily rain (Tie)	0.3 mm (0.01 in)	tie	62 years	6 of 100 (Routine)
14 February 2025	San Gabriel Dam Fc425B-E, US	daily rain	116.1 mm (4.6 in)	12.2 mm (0.5 in)	30 years	19 of 100 (Routine)
7 February 2025	San Gabriel Dam Fc425B-E, US	daily rain	81.0 mm (3.2 in)	12.7 mm (0.5 in)	16 years	14 of 100 (Routine)
5 February 2024	San Gabriel Dam Fc425B-E, US	daily rain	147.1 mm (5.8 in)	108.2 mm (4.3 in)	34 years	51 of 100 (Notable)
3 September 2023	San Gabriel Dam Fc425B-E, US	daily rain	5.8 mm (0.23 in)	4.8 mm (0.19 in)	50 years	20 of 100 (Routine)
2 September 2023	San Gabriel Dam Fc425B-E, US	daily rain	17.0 mm (0.7 in)	14.0 mm (0.6 in)	56 years	20 of 100 (Routine)
22 August 2023	San Gabriel Dam Fc425B-E, US	daily rain	0.8 mm (0.03 in)	0.8 mm (0.03 in)	74 years	20 of 100 (Routine)
21 August 2023	San Gabriel Dam Fc425B-E, US	monthly rain	147.3 mm (5.8 in)	47.2 mm (1.9 in)	24 years	51 of 100 (Notable)
20 August 2023	San Gabriel Dam Fc425B-E, US	daily rain	3.8 mm (0.15 in)	2.8 mm (0.11 in)	40 years	20 of 100 (Routine)
12 June 2023	San Gabriel Dam Fc425B-E, US	daily rain	2.5 mm (0.10 in)	0.2 mm (0.01 in)	56 years	20 of 100 (Routine)
4 May 2023	San Gabriel Dam Fc425B-E, US	daily rain	27.4 mm (1.1 in)	14.4 mm (0.6 in)	24 years	26 of 100 (Routine)
22 March 2023	San Gabriel Dam Fc425B-E, US	daily rain	63.8 mm (2.5 in)	35.1 mm (1.4 in)	64 years	42 of 100 (Notable)
15 March 2023	San Gabriel Dam Fc425B-E, US	daily rain	107.7 mm (4.2 in)	51.6 mm (2.0 in)	70 years	51 of 100 (Notable)
1 January 2023	San Gabriel Dam Fc425B-E, US	daily rain	87.4 mm (3.4 in)	69.1 mm (2.7 in)	48 years	40 of 100 (Notable)
11 December 2022	San Gabriel Dam Fc425B-E, US	daily rain	82.3 mm (3.2 in)	50.3 mm (2.0 in)	25 years	31 of 100 (Routine)

Extremes by Year

1948 to 2026

Yearly extremes at San Gabriel Dam Fc425B-E: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	35.0 C (95.0 F)	2012	35.0 C (95.0 F)	1
Coldest night (TNn)	1.7 C (35.1 F)	2012	1.7 C (35.1 F)	1
Wettest day (Rx1day)	313.9 mm (12.4 in)	1969	97.4 mm (3.8 in)	76
Wettest five days (Rx5day)	636.3 mm (25.1 in)	1969	159.3 mm (6.3 in)	76
Longest dry spell (CDD)	211 days	1961	114 days	76

Hottest day (TXx)

The hottest day of the year at San Gabriel Dam Fc425B-E, 1948 to 2026. The record is 35.0 C (95.0 F) in 2012, marked on the chart; the median year is 35.0 C (95.0 F).

Hottest day (TXx) at San Gabriel Dam Fc425B-E by year
Year	Hottest day (TXx)
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
1974	n/a
1975	n/a
1976	n/a
1977	n/a
1978	n/a
1979	n/a
1980	n/a
1981	n/a
1982	n/a
1983	n/a
1984	n/a
1985	n/a
1986	n/a
1987	n/a
1988	n/a
1989	n/a
1990	n/a
1991	n/a
1992	n/a
1993	n/a
1994	n/a
1995	n/a
1996	n/a
1997	n/a
1998	n/a
1999	n/a
2000	n/a
2004	n/a
2005	n/a
2006	n/a
2007	n/a
2008	n/a
2009	n/a
2010	n/a
2011	n/a
2012	35.0 C (95.0 F)
2013	n/a
2014	n/a
2015	n/a
2016	n/a
2017	n/a
2018	n/a
2019	n/a
2020	n/a
2021	n/a
2022	n/a
2023	n/a
2024	n/a
2025	n/a
2026	n/a

Coldest night (TNn)

The coldest night of the year at San Gabriel Dam Fc425B-E, 1948 to 2026. The record is 1.7 C (35.1 F) in 2012, marked on the chart; the median year is 1.7 C (35.1 F).

Coldest night (TNn) at San Gabriel Dam Fc425B-E by year
Year	Coldest night (TNn)
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
1974	n/a
1975	n/a
1976	n/a
1977	n/a
1978	n/a
1979	n/a
1980	n/a
1981	n/a
1982	n/a
1983	n/a
1984	n/a
1985	n/a
1986	n/a
1987	n/a
1988	n/a
1989	n/a
1990	n/a
1991	n/a
1992	n/a
1993	n/a
1994	n/a
1995	n/a
1996	n/a
1997	n/a
1998	n/a
1999	n/a
2000	n/a
2004	n/a
2005	n/a
2006	n/a
2007	n/a
2008	n/a
2009	n/a
2010	n/a
2011	n/a
2012	1.7 C (35.1 F)
2013	n/a
2014	n/a
2015	n/a
2016	n/a
2017	n/a
2018	n/a
2019	n/a
2020	n/a
2021	n/a
2022	n/a
2023	n/a
2024	n/a
2025	n/a
2026	n/a

Wettest day (Rx1day)

The wettest day of the year at San Gabriel Dam Fc425B-E, 1948 to 2026. The record is 313.9 mm (12.4 in) in 1969, marked on the chart; the median year is 97.4 mm (3.8 in).

Wettest day (Rx1day) at San Gabriel Dam Fc425B-E by year
Year	Wettest day (Rx1day)
1948	23.1 mm (0.9 in)
1949	89.7 mm (3.5 in)
1950	62.5 mm (2.5 in)
1951	78.2 mm (3.1 in)
1952	165.4 mm (6.5 in)
1953	52.6 mm (2.1 in)
1954	129.0 mm (5.1 in)
1955	50.0 mm (2.0 in)
1956	206.0 mm (8.1 in)
1957	98.0 mm (3.9 in)
1958	97.8 mm (3.9 in)
1959	105.2 mm (4.1 in)
1960	50.5 mm (2.0 in)
1961	89.7 mm (3.5 in)
1962	119.9 mm (4.7 in)
1963	108.7 mm (4.3 in)
1964	62.2 mm (2.4 in)
1965	193.0 mm (7.6 in)
1966	185.7 mm (7.3 in)
1967	83.1 mm (3.3 in)
1968	95.0 mm (3.7 in)
1969	313.9 mm (12.4 in)
1970	148.6 mm (5.9 in)
1971	102.1 mm (4.0 in)
1972	35.6 mm (1.4 in)
1973	159.3 mm (6.3 in)
1974	97.3 mm (3.8 in)
1975	71.4 mm (2.8 in)
1976	110.5 mm (4.4 in)
1977	80.0 mm (3.1 in)
1978	153.7 mm (6.1 in)
1979	81.3 mm (3.2 in)
1980	196.9 mm (7.8 in)
1981	103.1 mm (4.1 in)
1982	121.9 mm (4.8 in)
1983	122.7 mm (4.8 in)
1984	76.2 mm (3.0 in)
1985	61.0 mm (2.4 in)
1986	98.6 mm (3.9 in)
1987	123.7 mm (4.9 in)
1988	95.8 mm (3.8 in)
1989	57.2 mm (2.3 in)
1990	69.9 mm (2.8 in)
1991	152.4 mm (6.0 in)
1992	121.4 mm (4.8 in)
1993	166.9 mm (6.6 in)
1994	45.7 mm (1.8 in)
1995	165.1 mm (6.5 in)
1996	140.2 mm (5.5 in)
1997	73.9 mm (2.9 in)
1998	157.0 mm (6.2 in)
1999	37.8 mm (1.5 in)
2000	59.2 mm (2.3 in)
2004	151.6 mm (6.0 in)
2005	198.9 mm (7.8 in)
2006	13.0 mm (0.5 in)
2007	47.2 mm (1.9 in)
2008	97.5 mm (3.8 in)
2009	100.1 mm (3.9 in)
2010	95.0 mm (3.7 in)
2011	83.6 mm (3.3 in)
2012	60.2 mm (2.4 in)
2013	26.7 mm (1.1 in)
2014	83.1 mm (3.3 in)
2015	30.0 mm (1.2 in)
2016	79.2 mm (3.1 in)
2017	112.0 mm (4.4 in)
2018	56.6 mm (2.2 in)
2019	115.8 mm (4.6 in)
2020	53.1 mm (2.1 in)
2021	115.3 mm (4.5 in)
2022	82.3 mm (3.2 in)
2023	147.3 mm (5.8 in)
2024	147.1 mm (5.8 in)
2025	116.1 mm (4.6 in)
2026	66.3 mm (2.6 in)

Wettest five days (Rx5day)

The wettest five days of the year at San Gabriel Dam Fc425B-E, 1948 to 2026. The record is 636.3 mm (25.1 in) in 1969, marked on the chart; the median year is 159.3 mm (6.3 in).

Wettest five days (Rx5day) at San Gabriel Dam Fc425B-E by year
Year	Wettest five days (Rx5day)
1948	34.5 mm (1.4 in)
1949	132.8 mm (5.2 in)
1950	79.0 mm (3.1 in)
1951	154.7 mm (6.1 in)
1952	286.9 mm (11.3 in)
1953	52.6 mm (2.1 in)
1954	148.8 mm (5.9 in)
1955	82.5 mm (3.2 in)
1956	301.3 mm (11.9 in)
1957	180.3 mm (7.1 in)
1958	170.9 mm (6.7 in)
1959	131.2 mm (5.2 in)
1960	91.1 mm (3.6 in)
1961	114.8 mm (4.5 in)
1962	301.6 mm (11.9 in)
1963	157.7 mm (6.2 in)
1964	107.7 mm (4.2 in)
1965	303.2 mm (11.9 in)
1966	480.3 mm (18.9 in)
1967	220.3 mm (8.7 in)
1968	113.8 mm (4.5 in)
1969	636.3 mm (25.1 in)
1970	234.4 mm (9.2 in)
1971	213.8 mm (8.4 in)
1972	83.8 mm (3.3 in)
1973	214.4 mm (8.4 in)
1974	325.7 mm (12.8 in)
1975	136.4 mm (5.4 in)
1976	166.9 mm (6.6 in)
1977	185.7 mm (7.3 in)
1978	386.7 mm (15.2 in)
1979	125.8 mm (5.0 in)
1980	493.6 mm (19.4 in)
1981	129.0 mm (5.1 in)
1982	210.3 mm (8.3 in)
1983	348.7 mm (13.7 in)
1984	184.6 mm (7.3 in)
1985	71.9 mm (2.8 in)
1986	157.0 mm (6.2 in)
1987	125.3 mm (4.9 in)
1988	117.6 mm (4.6 in)
1989	105.8 mm (4.2 in)
1990	125.5 mm (4.9 in)
1991	231.1 mm (9.1 in)
1992	263.9 mm (10.4 in)
1993	356.2 mm (14.0 in)
1994	91.5 mm (3.6 in)
1995	381.0 mm (15.0 in)
1996	289.3 mm (11.4 in)
1997	108.2 mm (4.3 in)
1998	259.1 mm (10.2 in)
1999	58.9 mm (2.3 in)
2000	136.2 mm (5.4 in)
2004	233.1 mm (9.2 in)
2005	9.9 mm (0.39 in)
2006	14.0 mm (0.6 in)
2007	58.6 mm (2.3 in)
2008	212.1 mm (8.4 in)
2009	166.0 mm (6.5 in)
2010	245.3 mm (9.7 in)
2011	134.1 mm (5.3 in)
2012	41.7 mm (1.6 in)
2013	54.3 mm (2.1 in)
2014	200.7 mm (7.9 in)
2015	48.6 mm (1.9 in)
2016	153.9 mm (6.1 in)
2017	226.1 mm (8.9 in)
2018	100.0 mm (3.9 in)
2019	205.9 mm (8.1 in)
2020	160.1 mm (6.3 in)
2021	158.5 mm (6.2 in)
2022	157.0 mm (6.2 in)
2023	234.8 mm (9.2 in)
2024	296.6 mm (11.7 in)
2025	187.2 mm (7.4 in)
2026	160.8 mm (6.3 in)

Longest dry spell (CDD)

The longest dry spell of the year at San Gabriel Dam Fc425B-E, 1948 to 2026. The record is 211 days in 1961, marked on the chart; the median year is 114 days.

Longest dry spell (CDD) at San Gabriel Dam Fc425B-E by year
Year	Longest dry spell (CDD)
1948	109 days
1949	149 days
1950	162 days
1951	163 days
1952	89 days
1953	146 days
1954	196 days
1955	100 days
1956	146 days
1957	122 days
1958	94 days
1959	84 days
1960	157 days
1961	211 days
1962	140 days
1963	84 days
1964	140 days
1965	55 days
1966	131 days
1967	80 days
1968	56 days
1969	95 days
1970	145 days
1971	138 days
1972	72 days
1973	183 days
1974	77 days
1975	139 days
1976	84 days
1977	83 days
1978	114 days
1979	76 days
1980	71 days
1981	133 days
1982	68 days
1983	58 days
1984	55 days
1985	116 days
1986	133 days
1987	39 days
1988	113 days
1989	123 days
1990	174 days
1991	177 days
1992	102 days
1993	126 days
1994	138 days
1995	137 days
1996	194 days
1997	93 days
1998	68 days
1999	157 days
2000	67 days
2004	146 days
2005	19 days
2006	21 days
2007	47 days
2008	111 days
2009	73 days
2010	132 days
2011	62 days
2012	92 days
2013	151 days
2014	88 days
2015	64 days
2016	145 days
2017	77 days
2018	144 days
2019	124 days
2020	171 days
2021	64 days
2022	112 days
2023	68 days
2024	176 days
2025	135 days
2026	118 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

65 years, 1949 to 2025

A day with at least 98.1 mm (3.9 in) of rain is expected about once in 2 years. A day with at least 253.6 mm (10.0 in) of rain is expected about once in 100 years.

Rainfall return levels at San Gabriel Dam Fc425B-E: the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	98.1 mm (3.9 in)
5 years	141.5 mm (5.6 in)
10 years	169.6 mm (6.7 in)
25 years	204.1 mm (8.0 in)
50 years	229.2 mm (9.0 in)
100 years	253.6 mm (10.0 in)	Longer than the 65 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, 65 years of values from 1949 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: 313.9 mm (12.4 in) in 1969; 206.0 mm (8.1 in) in 1956; 193.0 mm (7.6 in) in 1965.

Download the Data

Data for San Gabriel Dam Fc425B-E standing records by year: CSV or JSON. Field meanings are on the data page.
Data for San Gabriel Dam Fc425B-E 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 2026-10-12. Last revised 12 October 2026 (2026-10-12).