San Clemente Dam Weather Records (USC00047731)
Record envelope, standing records and threshold days for San Clemente Dam (USC00047731), California, United States, with 80 years of record.
Key Facts for San Clemente Dam
- San Clemente Dam (USC00047731) is a weather station in California, United States at 36.44 latitude and -121.71 longitude, 183 m (600 ft) above sea level.
- The station reports from 1940 to 2019, 80 years of record.
- 0 records set at San Clemente Dam still stand.
- Records are tracked for prcp, snow, snwd: an element needs 30 years of data to be eligible.
- San Clemente Dam set a daily record precipitation of 21.1 mm (0.8 in) on 5 February 2019.
About the Station
- Location: California, United States, 36.44 latitude, -121.71 longitude.
- Elevation: 183 m (600 ft).
- Period of record: 1940 to 2019, 80 years.
- Eligible elements: prcp, snow, snwd.
Daily Record Envelope and 2026
0 days at or beyond a record| 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 | 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
0 standing records| Year set | Standing records |
|---|
Wettest Day of Each Month
Feb: 135.9 mm (5.4 in)| Month | Record daily precipitation (mm) | Date |
|---|---|---|
| Jan | 106.2 mm (4.2 in) | 10 January 1995 |
| Feb | 135.9 mm (5.4 in) | 1 February 1945 |
| Mar | 87.6 mm (3.4 in) | 10 March 1995 |
| Apr | 92.7 mm (3.6 in) | 3 April 1958 |
| May | 42.4 mm (1.7 in) | 16 May 1996 |
| Jun | 31.8 mm (1.3 in) | 6 June 2011 |
| Jul | 19.1 mm (0.8 in) | 2 July 1980 |
| Aug | 10.2 mm (0.4 in) | 20 August 1976 |
| Sep | 52.1 mm (2.1 in) | 19 September 1959 |
| Oct | 102.4 mm (4.0 in) | 14 October 2009 |
| Nov | 100.3 mm (3.9 in) | 20 November 1946 |
| Dec | 100.3 mm (3.9 in) | 23 December 1955 |
Latest Records
20| Date | Station | Record | Value | Beat old record by | Old record stood | Significance |
|---|---|---|---|---|---|---|
| 5 February 2019 | San Clemente Dam, US | daily rain | 21.1 mm (0.8 in) | 0.8 mm (0.03 in) | 71 years | 20 of 100 (Routine) |
| 17 January 2019 | San Clemente Dam, US | daily rain | 55.9 mm (2.2 in) | 16.0 mm (0.6 in) | 40 years | 29 of 100 (Routine) |
| 22 March 2018 | San Clemente Dam, US | daily rain | 38.1 mm (1.5 in) | 11.7 mm (0.5 in) | 72 years | 37 of 100 (Notable) |
| 7 August 2015 | San Clemente Dam, US | daily rain | 1.3 mm (0.05 in) | 1.3 mm (0.05 in) | 74 years | 20 of 100 (Routine) |
| 12 December 2014 | San Clemente Dam, US | daily rain | 90.2 mm (3.6 in) | 65.3 mm (2.6 in) | 19 years | 52 of 100 (Notable) |
| 3 November 2014 | San Clemente Dam, US | daily rain | 32.5 mm (1.3 in) | 8.4 mm (0.33 in) | 45 years | 26 of 100 (Routine) |
| 20 May 2014 | San Clemente Dam, US | daily rain | 3.3 mm (0.13 in) | 0.5 mm (0.02 in) | 52 years | 20 of 100 (Routine) |
| 21 September 2013 | San Clemente Dam, US | daily rain | 0.3 mm (0.01 in) | 0.3 mm (0.01 in) | 72 years | 20 of 100 (Routine) |
| 3 December 2012 | San Clemente Dam, US | daily rain | 39.4 mm (1.6 in) | 2.6 mm (0.10 in) | 46 years | 21 of 100 (Routine) |
| 26 March 2012 | San Clemente Dam, US | daily rain | 30.0 mm (1.2 in) | 5.1 mm (0.20 in) | 19 years | 16 of 100 (Routine) |
| 18 March 2012 | San Clemente Dam, US | daily rain | 27.7 mm (1.1 in) | 6.1 mm (0.24 in) | 69 years | 32 of 100 (Routine) |
| 17 March 2012 | San Clemente Dam, US | daily rain | 30.2 mm (1.2 in) | 1.8 mm (0.07 in) | 58 years | 25 of 100 (Routine) |
| 6 October 2011 | San Clemente Dam, US | daily rain | 9.9 mm (0.39 in) | 1.8 mm (0.07 in) | 20 years | 14 of 100 (Routine) |
| 4 October 2011 | San Clemente Dam, US | daily rain | 7.1 mm (0.28 in) | 5.3 mm (0.21 in) | 2 years | 11 of 100 (Routine) |
| 6 June 2011 | San Clemente Dam, US | monthly rain | 31.8 mm (1.3 in) | 7.9 mm (0.31 in) | 15 years | 45 of 100 (Notable) |
| 18 May 2011 | San Clemente Dam, US | daily rain (Tie) | 9.9 mm (0.39 in) | tie | 16 years | 3 of 100 (Routine) |
| 20 March 2011 | San Clemente Dam, US | daily rain | 62.7 mm (2.5 in) | 22.6 mm (0.9 in) | 37 years | 37 of 100 (Notable) |
| 22 November 2010 | San Clemente Dam, US | daily rain | 39.9 mm (1.6 in) | 16.5 mm (0.6 in) | 13 years | 23 of 100 (Routine) |
| 12 April 2010 | San Clemente Dam, US | daily rain | 40.1 mm (1.6 in) | 31.7 mm (1.2 in) | 53 years | 58 of 100 (Notable) |
| 20 January 2010 | San Clemente Dam, US | daily rain | 48.3 mm (1.9 in) | 14.0 mm (0.6 in) | 48 years | 29 of 100 (Routine) |
Extremes by Year
1940 to 2019| Measure | Record | Year of the record | Median year | Years with a value |
|---|---|---|---|---|
| Wettest day (Rx1day) | 135.9 mm (5.4 in) | 1945 | 55.3 mm (2.2 in) | 80 |
| Wettest five days (Rx5day) | 218.9 mm (8.6 in) | 1998 | 103.1 mm (4.1 in) | 79 |
| Longest dry spell (CDD) | 203 days | 1992 | 114 days | 80 |
Wettest day (Rx1day)
| Year | Wettest day (Rx1day) |
|---|---|
| 1940 | 61.0 mm (2.4 in) |
| 1941 | 55.6 mm (2.2 in) |
| 1942 | 49.5 mm (1.9 in) |
| 1943 | 86.4 mm (3.4 in) |
| 1944 | 40.1 mm (1.6 in) |
| 1945 | 135.9 mm (5.4 in) |
| 1946 | 100.3 mm (3.9 in) |
| 1947 | 23.6 mm (0.9 in) |
| 1948 | 44.5 mm (1.8 in) |
| 1949 | 27.2 mm (1.1 in) |
| 1950 | 81.3 mm (3.2 in) |
| 1951 | 59.7 mm (2.4 in) |
| 1952 | 71.9 mm (2.8 in) |
| 1953 | 38.1 mm (1.5 in) |
| 1954 | 39.1 mm (1.5 in) |
| 1955 | 100.3 mm (3.9 in) |
| 1956 | 52.1 mm (2.1 in) |
| 1957 | 71.1 mm (2.8 in) |
| 1958 | 92.7 mm (3.6 in) |
| 1959 | 80.8 mm (3.2 in) |
| 1960 | 52.6 mm (2.1 in) |
| 1961 | 36.3 mm (1.4 in) |
| 1962 | 67.3 mm (2.6 in) |
| 1963 | 104.9 mm (4.1 in) |
| 1964 | 42.2 mm (1.7 in) |
| 1965 | 46.7 mm (1.8 in) |
| 1966 | 88.1 mm (3.5 in) |
| 1967 | 47.0 mm (1.9 in) |
| 1968 | 35.3 mm (1.4 in) |
| 1969 | 101.9 mm (4.0 in) |
| 1970 | 58.7 mm (2.3 in) |
| 1971 | 33.8 mm (1.3 in) |
| 1972 | 47.8 mm (1.9 in) |
| 1973 | 60.7 mm (2.4 in) |
| 1974 | 59.9 mm (2.4 in) |
| 1975 | 79.2 mm (3.1 in) |
| 1976 | 36.8 mm (1.4 in) |
| 1977 | 48.3 mm (1.9 in) |
| 1978 | 54.9 mm (2.2 in) |
| 1979 | 43.9 mm (1.7 in) |
| 1980 | 67.1 mm (2.6 in) |
| 1981 | 69.3 mm (2.7 in) |
| 1982 | 87.9 mm (3.5 in) |
| 1983 | 83.1 mm (3.3 in) |
| 1984 | 44.7 mm (1.8 in) |
| 1985 | 26.7 mm (1.1 in) |
| 1986 | 81.8 mm (3.2 in) |
| 1987 | 71.6 mm (2.8 in) |
| 1988 | 30.5 mm (1.2 in) |
| 1989 | 30.5 mm (1.2 in) |
| 1990 | 36.1 mm (1.4 in) |
| 1991 | 51.1 mm (2.0 in) |
| 1992 | 61.2 mm (2.4 in) |
| 1993 | 102.6 mm (4.0 in) |
| 1994 | 34.3 mm (1.4 in) |
| 1995 | 106.2 mm (4.2 in) |
| 1996 | 60.2 mm (2.4 in) |
| 1997 | 54.1 mm (2.1 in) |
| 1998 | 112.3 mm (4.4 in) |
| 1999 | 38.6 mm (1.5 in) |
| 2000 | 41.7 mm (1.6 in) |
| 2001 | 62.0 mm (2.4 in) |
| 2002 | 75.4 mm (3.0 in) |
| 2003 | 75.2 mm (3.0 in) |
| 2004 | 49.3 mm (1.9 in) |
| 2005 | 63.5 mm (2.5 in) |
| 2006 | 51.8 mm (2.0 in) |
| 2007 | 21.1 mm (0.8 in) |
| 2008 | 105.2 mm (4.1 in) |
| 2009 | 102.4 mm (4.0 in) |
| 2010 | 48.3 mm (1.9 in) |
| 2011 | 62.7 mm (2.5 in) |
| 2012 | 54.1 mm (2.1 in) |
| 2013 | 10.2 mm (0.4 in) |
| 2014 | 90.2 mm (3.6 in) |
| 2015 | 45.7 mm (1.8 in) |
| 2016 | 31.2 mm (1.2 in) |
| 2017 | 53.3 mm (2.1 in) |
| 2018 | 39.4 mm (1.6 in) |
| 2019 | 55.9 mm (2.2 in) |
Wettest five days (Rx5day)
| Year | Wettest five days (Rx5day) |
|---|---|
| 1940 | 135.1 mm (5.3 in) |
| 1941 | 140.5 mm (5.5 in) |
| 1942 | 122.4 mm (4.8 in) |
| 1943 | 185.5 mm (7.3 in) |
| 1944 | 94.8 mm (3.7 in) |
| 1945 | 202.0 mm (8.0 in) |
| 1946 | 136.9 mm (5.4 in) |
| 1947 | 54.0 mm (2.1 in) |
| 1948 | 77.8 mm (3.1 in) |
| 1949 | 62.0 mm (2.4 in) |
| 1950 | 127.5 mm (5.0 in) |
| 1951 | 93.8 mm (3.7 in) |
| 1952 | 123.5 mm (4.9 in) |
| 1953 | 43.5 mm (1.7 in) |
| 1954 | 69.1 mm (2.7 in) |
| 1955 | 208.8 mm (8.2 in) |
| 1956 | 92.9 mm (3.7 in) |
| 1957 | 105.9 mm (4.2 in) |
| 1958 | 182.8 mm (7.2 in) |
| 1959 | 132.6 mm (5.2 in) |
| 1960 | 73.7 mm (2.9 in) |
| 1961 | 60.4 mm (2.4 in) |
| 1962 | 140.8 mm (5.5 in) |
| 1963 | 195.3 mm (7.7 in) |
| 1964 | 89.2 mm (3.5 in) |
| 1965 | 100.3 mm (3.9 in) |
| 1966 | 155.9 mm (6.1 in) |
| 1967 | 109.8 mm (4.3 in) |
| 1968 | 58.4 mm (2.3 in) |
| 1969 | 174.5 mm (6.9 in) |
| 1970 | 143.8 mm (5.7 in) |
| 1971 | 83.2 mm (3.3 in) |
| 1972 | 90.3 mm (3.6 in) |
| 1973 | 96.2 mm (3.8 in) |
| 1974 | 100.5 mm (4.0 in) |
| 1975 | 126.6 mm (5.0 in) |
| 1976 | 60.0 mm (2.4 in) |
| 1977 | 95.5 mm (3.8 in) |
| 1978 | 139.7 mm (5.5 in) |
| 1979 | 77.2 mm (3.0 in) |
| 1980 | 197.9 mm (7.8 in) |
| 1981 | 153.1 mm (6.0 in) |
| 1982 | 137.2 mm (5.4 in) |
| 1983 | 183.6 mm (7.2 in) |
| 1984 | 62.7 mm (2.5 in) |
| 1985 | 71.4 mm (2.8 in) |
| 1986 | 215.1 mm (8.5 in) |
| 1987 | 81.9 mm (3.2 in) |
| 1988 | 77.2 mm (3.0 in) |
| 1989 | 31.5 mm (1.2 in) |
| 1990 | 54.6 mm (2.1 in) |
| 1991 | 100.6 mm (4.0 in) |
| 1992 | 166.6 mm (6.6 in) |
| 1993 | 173.2 mm (6.8 in) |
| 1994 | 88.3 mm (3.5 in) |
| 1995 | 190.9 mm (7.5 in) |
| 1996 | 111.2 mm (4.4 in) |
| 1997 | 100.3 mm (3.9 in) |
| 1998 | 218.9 mm (8.6 in) |
| 1999 | 63.8 mm (2.5 in) |
| 2000 | 91.0 mm (3.6 in) |
| 2001 | 119.4 mm (4.7 in) |
| 2002 | 143.5 mm (5.6 in) |
| 2003 | 93.8 mm (3.7 in) |
| 2004 | 142.0 mm (5.6 in) |
| 2005 | 135.9 mm (5.4 in) |
| 2006 | 117.0 mm (4.6 in) |
| 2007 | 34.6 mm (1.4 in) |
| 2008 | 157.1 mm (6.2 in) |
| 2009 | 128.3 mm (5.1 in) |
| 2010 | 167.2 mm (6.6 in) |
| 2011 | 103.1 mm (4.1 in) |
| 2012 | 94.3 mm (3.7 in) |
| 2013 | 13.5 mm (0.5 in) |
| 2014 | 133.2 mm (5.2 in) |
| 2015 | 63.0 mm (2.5 in) |
| 2016 | 0.0 mm (0.00 in) |
| 2017 | 1.3 mm (0.05 in) |
| 2018 | 72.2 mm (2.8 in) |
| 2019 | n/a |
Longest dry spell (CDD)
| Year | Longest dry spell (CDD) |
|---|---|
| 1940 | 107 days |
| 1941 | 114 days |
| 1942 | 137 days |
| 1943 | 127 days |
| 1944 | 118 days |
| 1945 | 73 days |
| 1946 | 107 days |
| 1947 | 100 days |
| 1948 | 127 days |
| 1949 | 141 days |
| 1950 | 91 days |
| 1951 | 125 days |
| 1952 | 138 days |
| 1953 | 83 days |
| 1954 | 143 days |
| 1955 | 114 days |
| 1956 | 75 days |
| 1957 | 109 days |
| 1958 | 86 days |
| 1959 | 97 days |
| 1960 | 128 days |
| 1961 | 147 days |
| 1962 | 147 days |
| 1963 | 91 days |
| 1964 | 83 days |
| 1965 | 81 days |
| 1966 | 56 days |
| 1967 | 108 days |
| 1968 | 129 days |
| 1969 | 127 days |
| 1970 | 133 days |
| 1971 | 94 days |
| 1972 | 142 days |
| 1973 | 158 days |
| 1974 | 83 days |
| 1975 | 80 days |
| 1976 | 65 days |
| 1977 | 101 days |
| 1978 | 132 days |
| 1979 | 89 days |
| 1980 | 127 days |
| 1981 | 191 days |
| 1982 | 85 days |
| 1983 | 77 days |
| 1984 | 164 days |
| 1985 | 163 days |
| 1986 | 78 days |
| 1987 | 148 days |
| 1988 | 144 days |
| 1989 | 116 days |
| 1990 | 117 days |
| 1991 | 127 days |
| 1992 | 203 days |
| 1993 | 129 days |
| 1994 | 108 days |
| 1995 | 105 days |
| 1996 | 155 days |
| 1997 | 76 days |
| 1998 | 138 days |
| 1999 | 96 days |
| 2000 | 84 days |
| 2001 | 155 days |
| 2002 | 169 days |
| 2003 | 174 days |
| 2004 | 102 days |
| 2005 | 86 days |
| 2006 | 135 days |
| 2007 | 140 days |
| 2008 | 183 days |
| 2009 | 134 days |
| 2010 | 131 days |
| 2011 | 96 days |
| 2012 | 87 days |
| 2013 | 116 days |
| 2014 | 32 days |
| 2015 | 5 days |
| 2016 | 5 days |
| 2017 | 22 days |
| 2018 | 32 days |
| 2019 | 4 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
72 years, 1941 to 2013A day with at least 57.9 mm (2.3 in) of rain is expected about once in 2 years. A day with at least 138.5 mm (5.5 in) of rain is expected about once in 100 years.
| Expected about once in | A day with at least | Note |
|---|---|---|
| 2 years | 57.9 mm (2.3 in) | |
| 5 years | 81.6 mm (3.2 in) | |
| 10 years | 96.4 mm (3.8 in) | |
| 25 years | 114.2 mm (4.5 in) | |
| 50 years | 126.6 mm (5.0 in) | |
| 100 years | 138.5 mm (5.5 in) | Longer than the 72 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, 72 years of values from 1941 to 2013.
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: 135.9 mm (5.4 in) in 1945; 112.3 mm (4.4 in) in 1998; 106.2 mm (4.2 in) in 1995.
Download the Data
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 . Last revised (2025-12-31).