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Pacoima Dam Fc33A-E Weather Records (USC00046602)

Record envelope, standing records and threshold days for Pacoima Dam Fc33A-E (USC00046602), California, United States, with 84 years of record.

Key Facts for Pacoima Dam Fc33A-E

  • Pacoima Dam Fc33A-E (USC00046602) is a weather station in California, United States at 34.33 latitude and -118.40 longitude, 472 m (1,550 ft) above sea level.
  • The station reports from 1943 to 2026, 84 years of record.
  • 1,464 records set at Pacoima Dam Fc33A-E still stand.
  • Records are tracked for prcp, snow, snwd: an element needs 30 years of data to be eligible.
  • Pacoima Dam Fc33A-E set a daily record precipitation of 64.3 mm (2.5 in) on 27 December 2025.

About the Station

  • Location: California, United States, 34.33 latitude, -118.40 longitude.
  • Elevation: 472 m (1,550 ft).
  • Period of record: 1943 to 2026, 84 years.
  • Eligible elements: prcp, snow, snwd.

Daily Record Envelope and 2026

262 days at or beyond a record
Daily record high and record low at Pacoima Dam Fc33A-E, with 2026 drawn through them The band shows the record high and record low for each calendar day at Pacoima Dam Fc33A-E. The lines show the 2026 daily maximum and minimum. 262 days in 2026 matched or passed a record. Temperatures are in degrees Celsius. 01020304050 JanFebMarAprMayJunJulAugSepOctNovDec
The band shows the record high and record low for each calendar day at Pacoima Dam Fc33A-E. The lines show the 2026 daily maximum and minimum. 262 days in 2026 matched or passed a record. Temperatures are in degrees Celsius.
Daily record high and record low at Pacoima Dam Fc33A-E, with 2026 drawn through them
MonthHighest record highLowest record low2026 highest maximum2026 lowest minimum
Jan28.9 C (84.0 F)3.3 C (37.9 F)26.7 C (80.1 F)3.3 C (37.9 F)
Feb29.4 C (84.9 F)2.8 C (37.0 F)29.4 C (84.9 F)5.0 C (41.0 F)
Mar33.9 C (93.0 F)3.9 C (39.0 F)33.9 C (93.0 F)3.9 C (39.0 F)
Apr32.2 C (90.0 F)4.4 C (39.9 F)32.2 C (90.0 F)5.0 C (41.0 F)
May38.3 C (100.9 F)6.1 C (43.0 F)38.3 C (100.9 F)8.9 C (48.0 F)
Jun40.6 C (105.1 F)10.6 C (51.1 F)38.3 C (100.9 F)11.1 C (52.0 F)
Jul43.3 C (109.9 F)12.2 C (54.0 F)38.3 C (100.9 F)12.2 C (54.0 F)
Aug42.2 C (108.0 F)12.2 C (54.0 F)40.0 C (104.0 F)14.4 C (57.9 F)
Sep46.1 C (115.0 F)11.1 C (52.0 F)39.4 C (102.9 F)14.4 C (57.9 F)
Oct42.8 C (109.0 F)10.0 C (50.0 F)33.3 C (91.9 F)10.0 C (50.0 F)
Nov35.0 C (95.0 F)5.6 C (42.1 F)35.0 C (95.0 F)7.8 C (46.0 F)
Dec30.6 C (87.1 F)4.4 C (39.9 F)30.6 C (87.1 F)7.8 C (46.0 F)

Which Years Hold Standing Records

1,464 standing records
Standing records at Pacoima Dam Fc33A-E by the year they were set 1,464 records at Pacoima Dam Fc33A-E still stand. 2024 holds the most, with 602. 02004006008002023: 3072024: 6022025: 555202320242025
1,464 records at Pacoima Dam Fc33A-E still stand. 2024 holds the most, with 602.
Standing records at Pacoima Dam Fc33A-E by the year they were set
Year setStanding records
2023307
2024602
2025555

All-Time Record Progression

1 new records
When Pacoima Dam Fc33A-E set new all-time records 1 all-time records were set at Pacoima Dam Fc33A-E between 11 February 1973 and 11 February 1973. Each dot is a new record. Record daily precipitation11 February 1973: Record daily precipitation 145.8 mm (5.7 in)
1 all-time records were set at Pacoima Dam Fc33A-E between 11 February 1973 and 11 February 1973. Each dot is a new record.
When Pacoima Dam Fc33A-E set new all-time records
DateKindDetail
1973-02-11Record daily precipitationRecord daily precipitation 145.8 mm (5.7 in)

Wettest Day of Each Month

Feb: 145.8 mm (5.7 in)
Record daily precipitation for each month at Pacoima Dam Fc33A-E The wettest day on record for each calendar month at Pacoima Dam Fc33A-E. The most was 145.8 mm (5.7 in) on 11 February 1973. 050100150 Jan: 121.2 mm (4.8 in), 26 January 1956 Jan Feb: 145.8 mm (5.7 in), 11 February 1973 Feb Mar: 110.5 mm (4.4 in), 2 March 1983 Mar Apr: 75.2 mm (3.0 in), 12 April 1956 Apr May: 87.9 mm (3.5 in), 9 May 1977 May Jun: 28.4 mm (1.1 in), 5 June 1993 Jun Jul: 15.7 mm (0.6 in), 20 July 2015 Jul Aug: 142.5 mm (5.6 in), 21 August 2023 Aug Sep: 56.1 mm (2.2 in), 11 September 1976 Sep Oct: 75.7 mm (3.0 in), 23 October 1987 Oct Nov: 119.9 mm (4.7 in), 29 November 1970 Nov Dec: 87.1 mm (3.4 in), 29 December 1965 Dec
The wettest day on record for each calendar month at Pacoima Dam Fc33A-E. The most was 145.8 mm (5.7 in) on 11 February 1973.
Record daily precipitation for each month at Pacoima Dam Fc33A-E
MonthRecord daily precipitation (mm)Date
Jan121.2 mm (4.8 in)26 January 1956
Feb145.8 mm (5.7 in)11 February 1973
Mar110.5 mm (4.4 in)2 March 1983
Apr75.2 mm (3.0 in)12 April 1956
May87.9 mm (3.5 in)9 May 1977
Jun28.4 mm (1.1 in)5 June 1993
Jul15.7 mm (0.6 in)20 July 2015
Aug142.5 mm (5.6 in)21 August 2023
Sep56.1 mm (2.2 in)11 September 1976
Oct75.7 mm (3.0 in)23 October 1987
Nov119.9 mm (4.7 in)29 November 1970
Dec87.1 mm (3.4 in)29 December 1965

Period of Record Coverage

2023 to 2025
Days with data per year at Pacoima Dam Fc33A-E 3 years of record at Pacoima Dam Fc33A-E, 2023 to 2025. 1 years have data for under 90 percent of days and are left out of rankings: 2023. 2023: 214 of 365 days2024: 366 of 366 days2025: 365 of 365 days2025
3 years of record at Pacoima Dam Fc33A-E, 2023 to 2025. 1 years have data for under 90 percent of days and are left out of rankings: 2023.
Days with data per year at Pacoima Dam Fc33A-E
YearDays with dataShare of yearComplete
202321459%No
2024366100%Yes
2025365100%Yes

Latest Records

20
Latest records at Pacoima Dam Fc33A-E
DateStationRecordValueBeat old record byOld record stoodSignificance
27 December 2025Pacoima Dam Fc33A-E, USdaily rain64.3 mm (2.5 in)31.8 mm (1.3 in)54 years44 of 100 (Notable)
25 December 2025Pacoima Dam Fc33A-E, USdaily rain83.8 mm (3.3 in)39.6 mm (1.6 in)31 years42 of 100 (Notable)
15 October 2025Pacoima Dam Fc33A-E, USdaily rain15.0 mm (0.6 in)10.9 mm (0.4 in)16 years20 of 100 (Routine)
14 October 2025Pacoima Dam Fc33A-E, USdaily rain52.1 mm (2.1 in)20.3 mm (0.8 in)16 years28 of 100 (Routine)
30 March 2024Pacoima Dam Fc33A-E, USdaily rain36.6 mm (1.4 in)18.6 mm (0.7 in)1 year19 of 100 (Routine)
6 February 2024Pacoima Dam Fc33A-E, USdaily rain71.4 mm (2.8 in)28.5 mm (1.1 in)73 years44 of 100 (Notable)
5 February 2024Pacoima Dam Fc33A-E, USdaily rain58.9 mm (2.3 in)26.4 mm (1.0 in)4 years22 of 100 (Routine)
22 December 2023Pacoima Dam Fc33A-E, USdaily rain32.5 mm (1.3 in)3.5 mm (0.14 in)52 years25 of 100 (Routine)
1 September 2023Pacoima Dam Fc33A-E, USdaily rain5.6 mm (0.22 in)1.5 mm (0.06 in)56 years20 of 100 (Routine)
21 August 2023Pacoima Dam Fc33A-E, USmonthly rain142.5 mm (5.6 in)88.1 mm (3.5 in)40 years70 of 100 (Major)
30 March 2023Pacoima Dam Fc33A-E, USdaily rain18.0 mm (0.7 in)1.7 mm (0.07 in)68 years20 of 100 (Routine)
25 February 2023Pacoima Dam Fc33A-E, USdaily rain130.0 mm (5.1 in)61.9 mm (2.4 in)53 years55 of 100 (Notable)
1 January 2023Pacoima Dam Fc33A-E, USdaily rain40.9 mm (1.6 in)11.9 mm (0.5 in)16 years19 of 100 (Routine)
11 December 2022Pacoima Dam Fc33A-E, USdaily rain (Tie)34.5 mm (1.4 in)tie25 years3 of 100 (Routine)
9 September 2022Pacoima Dam Fc33A-E, USdaily rain3.8 mm (0.15 in)1.3 mm (0.05 in)40 years20 of 100 (Routine)
31 December 2021Pacoima Dam Fc33A-E, USdaily rain39.9 mm (1.6 in)28.7 mm (1.1 in)44 years38 of 100 (Notable)
30 December 2021Pacoima Dam Fc33A-E, USdaily rain59.4 mm (2.3 in)18.8 mm (0.7 in)30 years28 of 100 (Routine)
24 December 2021Pacoima Dam Fc33A-E, USdaily rain70.6 mm (2.8 in)16.5 mm (0.6 in)50 years32 of 100 (Routine)
14 December 2021Pacoima Dam Fc33A-E, USdaily rain19.1 mm (0.8 in)7.2 mm (0.28 in)72 years20 of 100 (Routine)
26 October 2021Pacoima Dam Fc33A-E, USdaily rain23.1 mm (0.9 in)21.3 mm (0.8 in)39 years20 of 100 (Routine)

Extremes by Year

1943 to 2026
Yearly extremes at Pacoima Dam Fc33A-E: the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Hottest day (TXx)46.1 C (115.0 F)202442.2 C (108.0 F)4
Coldest night (TNn)2.8 C (37.0 F)20243.6 C (38.5 F)4
Wettest day (Rx1day)145.8 mm (5.7 in)197356.0 mm (2.2 in)82
Wettest five days (Rx5day)279.6 mm (11.0 in)196299.6 mm (3.9 in)82
Longest dry spell (CDD)220 days1997118 days82

Hottest day (TXx)

Hottest day (TXx) at Pacoima Dam Fc33A-E by year The hottest day of the year at Pacoima Dam Fc33A-E, 1943 to 2026. The record is 46.1 C (115.0 F) in 2024, marked on the chart; the median year is 42.2 C (108.0 F). 40424446481960198020002020Record: 46.1 C (115.0 F) in 2024
The hottest day of the year at Pacoima Dam Fc33A-E, 1943 to 2026. The record is 46.1 C (115.0 F) in 2024, marked on the chart; the median year is 42.2 C (108.0 F).
Hottest day (TXx) at Pacoima Dam Fc33A-E by year
YearHottest day (TXx)
1943n/a
1944n/a
1945n/a
1946n/a
1947n/a
1948n/a
1949n/a
1950n/a
1951n/a
1952n/a
1953n/a
1954n/a
1955n/a
1956n/a
1957n/a
1958n/a
1959n/a
1960n/a
1961n/a
1962n/a
1963n/a
1964n/a
1965n/a
1966n/a
1967n/a
1968n/a
1969n/a
1970n/a
1971n/a
1972n/a
1973n/a
1974n/a
1975n/a
1976n/a
1977n/a
1978n/a
1979n/a
1980n/a
1981n/a
1982n/a
1983n/a
1984n/a
1985n/a
1986n/a
1987n/a
1988n/a
1989n/a
1990n/a
1991n/a
1992n/a
1993n/a
1994n/a
1995n/a
1996n/a
1997n/a
1998n/a
1999n/a
2000n/a
2003n/a
2004n/a
2005n/a
2006n/a
2007n/a
2008n/a
2009n/a
2010n/a
2011n/a
2012n/a
2013n/a
2014n/a
2015n/a
2016n/a
2017n/a
2018n/a
2019n/a
2020n/a
2021n/a
2022n/a
202343.3 C (109.9 F)
202446.1 C (115.0 F)
202540.0 C (104.0 F)
202641.1 C (106.0 F)

Coldest night (TNn)

Coldest night (TNn) at Pacoima Dam Fc33A-E by year The coldest night of the year at Pacoima Dam Fc33A-E, 1943 to 2026. The record is 2.8 C (37.0 F) in 2024, marked on the chart; the median year is 3.6 C (38.5 F). 2.533.544.51960198020002020Record: 2.8 C (37.0 F) in 2024
The coldest night of the year at Pacoima Dam Fc33A-E, 1943 to 2026. The record is 2.8 C (37.0 F) in 2024, marked on the chart; the median year is 3.6 C (38.5 F).
Coldest night (TNn) at Pacoima Dam Fc33A-E by year
YearColdest night (TNn)
1943n/a
1944n/a
1945n/a
1946n/a
1947n/a
1948n/a
1949n/a
1950n/a
1951n/a
1952n/a
1953n/a
1954n/a
1955n/a
1956n/a
1957n/a
1958n/a
1959n/a
1960n/a
1961n/a
1962n/a
1963n/a
1964n/a
1965n/a
1966n/a
1967n/a
1968n/a
1969n/a
1970n/a
1971n/a
1972n/a
1973n/a
1974n/a
1975n/a
1976n/a
1977n/a
1978n/a
1979n/a
1980n/a
1981n/a
1982n/a
1983n/a
1984n/a
1985n/a
1986n/a
1987n/a
1988n/a
1989n/a
1990n/a
1991n/a
1992n/a
1993n/a
1994n/a
1995n/a
1996n/a
1997n/a
1998n/a
1999n/a
2000n/a
2003n/a
2004n/a
2005n/a
2006n/a
2007n/a
2008n/a
2009n/a
2010n/a
2011n/a
2012n/a
2013n/a
2014n/a
2015n/a
2016n/a
2017n/a
2018n/a
2019n/a
2020n/a
2021n/a
2022n/a
20234.4 C (39.9 F)
20242.8 C (37.0 F)
20253.3 C (37.9 F)
20263.9 C (39.0 F)

Wettest day (Rx1day)

Wettest day (Rx1day) at Pacoima Dam Fc33A-E by year The wettest day of the year at Pacoima Dam Fc33A-E, 1943 to 2026. The record is 145.8 mm (5.7 in) in 1973, marked on the chart; the median year is 56.0 mm (2.2 in). 0501001501960198020002020Record: 145.8 mm (5.7 in) in 1973
The wettest day of the year at Pacoima Dam Fc33A-E, 1943 to 2026. The record is 145.8 mm (5.7 in) in 1973, marked on the chart; the median year is 56.0 mm (2.2 in).
Wettest day (Rx1day) at Pacoima Dam Fc33A-E by year
YearWettest day (Rx1day)
194318.3 mm (0.7 in)
194424.6 mm (1.0 in)
194537.6 mm (1.5 in)
194628.4 mm (1.1 in)
194726.7 mm (1.1 in)
194826.7 mm (1.1 in)
194950.3 mm (2.0 in)
195042.9 mm (1.7 in)
195150.8 mm (2.0 in)
195299.8 mm (3.9 in)
195346.0 mm (1.8 in)
195452.1 mm (2.1 in)
195540.4 mm (1.6 in)
1956121.2 mm (4.8 in)
195757.2 mm (2.3 in)
195862.2 mm (2.4 in)
195972.4 mm (2.9 in)
196042.2 mm (1.7 in)
196147.0 mm (1.9 in)
1962125.2 mm (4.9 in)
196339.9 mm (1.6 in)
196440.6 mm (1.6 in)
196594.5 mm (3.7 in)
196680.3 mm (3.2 in)
196788.4 mm (3.5 in)
196867.3 mm (2.6 in)
196976.2 mm (3.0 in)
1970119.9 mm (4.7 in)
197154.1 mm (2.1 in)
197220.3 mm (0.8 in)
1973145.8 mm (5.7 in)
197461.2 mm (2.4 in)
197550.3 mm (2.0 in)
197675.4 mm (3.0 in)
197787.9 mm (3.5 in)
197893.0 mm (3.7 in)
197982.6 mm (3.3 in)
1980103.9 mm (4.1 in)
198148.3 mm (1.9 in)
198256.1 mm (2.2 in)
1983110.5 mm (4.4 in)
198451.8 mm (2.0 in)
198525.9 mm (1.0 in)
198643.9 mm (1.7 in)
198775.7 mm (3.0 in)
198869.6 mm (2.7 in)
198923.9 mm (0.9 in)
199043.2 mm (1.7 in)
199160.5 mm (2.4 in)
1992138.4 mm (5.4 in)
199380.8 mm (3.2 in)
199444.2 mm (1.7 in)
199561.2 mm (2.4 in)
199672.4 mm (2.9 in)
199782.3 mm (3.2 in)
1998113.0 mm (4.4 in)
199931.0 mm (1.2 in)
200049.0 mm (1.9 in)
20030.0 mm (0.00 in)
200472.9 mm (2.9 in)
200590.2 mm (3.6 in)
200659.2 mm (2.3 in)
200727.9 mm (1.1 in)
200836.8 mm (1.4 in)
200941.7 mm (1.6 in)
201049.5 mm (1.9 in)
201171.1 mm (2.8 in)
201234.8 mm (1.4 in)
201321.1 mm (0.8 in)
201464.0 mm (2.5 in)
201529.7 mm (1.2 in)
201642.9 mm (1.7 in)
201761.0 mm (2.4 in)
201844.2 mm (1.7 in)
201955.9 mm (2.2 in)
202065.3 mm (2.6 in)
202170.6 mm (2.8 in)
202234.8 mm (1.4 in)
2023142.5 mm (5.6 in)
202471.4 mm (2.8 in)
202583.8 mm (3.3 in)
202643.9 mm (1.7 in)

Wettest five days (Rx5day)

Wettest five days (Rx5day) at Pacoima Dam Fc33A-E by year The wettest five days of the year at Pacoima Dam Fc33A-E, 1943 to 2026. The record is 279.6 mm (11.0 in) in 1962, marked on the chart; the median year is 99.6 mm (3.9 in). 01002003001960198020002020Record: 279.6 mm (11.0 in) in 1962
The wettest five days of the year at Pacoima Dam Fc33A-E, 1943 to 2026. The record is 279.6 mm (11.0 in) in 1962, marked on the chart; the median year is 99.6 mm (3.9 in).
Wettest five days (Rx5day) at Pacoima Dam Fc33A-E by year
YearWettest five days (Rx5day)
194324.6 mm (1.0 in)
194454.9 mm (2.2 in)
194574.5 mm (2.9 in)
194667.7 mm (2.7 in)
194732.8 mm (1.3 in)
194838.5 mm (1.5 in)
194959.7 mm (2.4 in)
195054.9 mm (2.2 in)
195188.1 mm (3.5 in)
1952225.3 mm (8.9 in)
195346.0 mm (1.8 in)
195480.8 mm (3.2 in)
195558.7 mm (2.3 in)
1956171.8 mm (6.8 in)
195788.1 mm (3.5 in)
1958119.8 mm (4.7 in)
195972.4 mm (2.9 in)
196095.6 mm (3.8 in)
196161.8 mm (2.4 in)
1962279.6 mm (11.0 in)
196379.0 mm (3.1 in)
196478.4 mm (3.1 in)
1965214.3 mm (8.4 in)
1966196.9 mm (7.8 in)
1967171.0 mm (6.7 in)
196872.9 mm (2.9 in)
1969173.8 mm (6.8 in)
1970154.4 mm (6.1 in)
1971170.2 mm (6.7 in)
197250.5 mm (2.0 in)
1973187.0 mm (7.4 in)
1974189.7 mm (7.5 in)
197588.9 mm (3.5 in)
1976102.4 mm (4.0 in)
1977120.5 mm (4.7 in)
1978249.5 mm (9.8 in)
1979106.2 mm (4.2 in)
1980247.8 mm (9.8 in)
198171.7 mm (2.8 in)
1982113.3 mm (4.5 in)
1983275.1 mm (10.8 in)
198496.8 mm (3.8 in)
198538.1 mm (1.5 in)
1986103.1 mm (4.1 in)
1987114.6 mm (4.5 in)
198893.0 mm (3.7 in)
198941.9 mm (1.6 in)
199060.7 mm (2.4 in)
1991113.3 mm (4.5 in)
1992270.3 mm (10.6 in)
1993209.2 mm (8.2 in)
199453.0 mm (2.1 in)
1995127.5 mm (5.0 in)
1996137.9 mm (5.4 in)
199790.9 mm (3.6 in)
1998197.8 mm (7.8 in)
199953.1 mm (2.1 in)
2000130.0 mm (5.1 in)
20030.0 mm (0.00 in)
2004119.9 mm (4.7 in)
2005248.6 mm (9.8 in)
200678.2 mm (3.1 in)
200734.8 mm (1.4 in)
2008147.3 mm (5.8 in)
200993.0 mm (3.7 in)
2010168.9 mm (6.6 in)
201152.9 mm (2.1 in)
201224.7 mm (1.0 in)
201350.9 mm (2.0 in)
2014108.7 mm (4.3 in)
201530.2 mm (1.2 in)
201676.5 mm (3.0 in)
201785.6 mm (3.4 in)
201870.1 mm (2.8 in)
2019148.4 mm (5.8 in)
2020144.6 mm (5.7 in)
2021104.7 mm (4.1 in)
2022104.4 mm (4.1 in)
2023201.8 mm (7.9 in)
2024164.8 mm (6.5 in)
2025218.0 mm (8.6 in)
2026105.6 mm (4.2 in)

Longest dry spell (CDD)

Longest dry spell (CDD) at Pacoima Dam Fc33A-E by year The longest dry spell of the year at Pacoima Dam Fc33A-E, 1943 to 2026. The record is 220 days in 1997, marked on the chart; the median year is 118 days. 0501001502002501960198020002020Record: 220 days in 1997
The longest dry spell of the year at Pacoima Dam Fc33A-E, 1943 to 2026. The record is 220 days in 1997, marked on the chart; the median year is 118 days.
Longest dry spell (CDD) at Pacoima Dam Fc33A-E by year
YearLongest dry spell (CDD)
1943172 days
1944152 days
194595 days
194677 days
194754 days
1948132 days
1949150 days
1950102 days
1951106 days
195291 days
1953169 days
1954137 days
1955101 days
1956147 days
1957122 days
195895 days
1959139 days
1960188 days
196171 days
1962150 days
196383 days
1964140 days
196572 days
1966131 days
196792 days
1968126 days
1969116 days
1970144 days
197198 days
197284 days
1973115 days
1974165 days
197590 days
197664 days
197784 days
1978132 days
197966 days
198070 days
1981162 days
198281 days
1983104 days
1984106 days
1985118 days
1986106 days
198740 days
1988149 days
1989103 days
199096 days
1991105 days
1992100 days
1993101 days
1994131 days
199578 days
1996166 days
1997220 days
199878 days
1999118 days
200068 days
200329 days
2004181 days
2005134 days
2006118 days
2007151 days
2008133 days
2009129 days
2010129 days
201193 days
201230 days
2013191 days
2014122 days
201564 days
2016162 days
2017135 days
2018134 days
2019151 days
2020171 days
2021155 days
2022111 days
202369 days
2024176 days
2025122 days
2026119 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

74 years, 1944 to 2025

A day with at least 57.1 mm (2.2 in) of rain is expected about once in 2 years. A day with at least 165.6 mm (6.5 in) of rain is expected about once in 100 years.

Rainfall return levels at Pacoima Dam Fc33A-E: the daily rain expected about once in a given number of years
Expected about once inA day with at leastNote
2 years57.1 mm (2.2 in)
5 years84.1 mm (3.3 in)
10 years102.8 mm (4.0 in)
25 years127.3 mm (5.0 in)
50 years146.2 mm (5.8 in)
100 years165.6 mm (6.5 in)Longer than the 74 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, 74 years of values from 1944 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: 145.8 mm (5.7 in) in 1973; 142.5 mm (5.6 in) in 2023; 138.4 mm (5.4 in) in 1992.

Download the Data

  • Data for Pacoima Dam Fc33A-E standing records by year: CSV or JSON. Field meanings are on the data page.
  • Data for Pacoima Dam Fc33A-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 2026-10-15 (15 October 2026). Records are computed by this site and are not official.

Data as of . Last revised (2025-12-31).