San Diego Intl AP Threshold Days by Year (USW00023188)
12 fixed thresholds counted per year at San Diego Intl AP (USW00023188): hot days, frost, tropical nights and heavy rain, with the most days in a year.
Key Facts for San Diego Intl AP Thresholds
- San Diego Intl AP: days with 10 mm (0.39 in) or more of precipitation in 87 years, most in 1941 with 22.
- San Diego Intl AP: days with a maximum temperature at or above 30 C (86 F) in 85 years, most in 2014 with 26.
- San Diego Intl AP: nights with a minimum temperature at or above 20 C (68 F) in 79 years, most in 1984 with 108.
- San Diego Intl AP: days with 25 mm (0.98 in) or more of precipitation in 73 years, most in 1941 with 7.
- 12 fixed thresholds have at least one qualifying day at San Diego Intl AP.
Days at or above 30 C (86 F)
85 years with a qualifying day| Year | Days | Decade average |
|---|---|---|
| 1940 | 9 | 6.8 |
| 1941 | 5 | 6.8 |
| 1942 | 5 | 6.8 |
| 1943 | 4 | 6.8 |
| 1945 | 8 | 6.8 |
| 1946 | 6 | 6.8 |
| 1947 | 10 | 6.8 |
| 1948 | 3 | 6.8 |
| 1949 | 11 | 6.8 |
| 1950 | 6 | 7.6 |
| 1951 | 5 | 7.6 |
| 1952 | 5 | 7.6 |
| 1953 | 11 | 7.6 |
| 1954 | 7 | 7.6 |
| 1955 | 6 | 7.6 |
| 1956 | 11 | 7.6 |
| 1957 | 5 | 7.6 |
| 1958 | 13 | 7.6 |
| 1959 | 7 | 7.6 |
| 1960 | 12 | 8 |
| 1961 | 7 | 8 |
| 1962 | 3 | 8 |
| 1963 | 9 | 8 |
| 1964 | 6 | 8 |
| 1965 | 12 | 8 |
| 1966 | 5 | 8 |
| 1967 | 13 | 8 |
| 1968 | 10 | 8 |
| 1969 | 3 | 8 |
| 1970 | 5 | 9.7 |
| 1971 | 14 | 9.7 |
| 1972 | 8 | 9.7 |
| 1973 | 10 | 9.7 |
| 1974 | 6 | 9.7 |
| 1975 | 5 | 9.7 |
| 1976 | 13 | 9.7 |
| 1977 | 3 | 9.7 |
| 1978 | 17 | 9.7 |
| 1979 | 16 | 9.7 |
| 1980 | 7 | 9.6 |
| 1981 | 11 | 9.6 |
| 1982 | 11 | 9.6 |
| 1983 | 19 | 9.6 |
| 1984 | 15 | 9.6 |
| 1985 | 13 | 9.6 |
| 1986 | 4 | 9.6 |
| 1987 | 4 | 9.6 |
| 1988 | 6 | 9.6 |
| 1989 | 6 | 9.6 |
| 1990 | 7 | 6.6 |
| 1991 | 5 | 6.6 |
| 1992 | 8 | 6.6 |
| 1993 | 1 | 6.6 |
| 1994 | 11 | 6.6 |
| 1995 | 7 | 6.6 |
| 1996 | 5 | 6.6 |
| 1997 | 12 | 6.6 |
| 1998 | 4 | 6.6 |
| 1999 | 6 | 6.6 |
| 2000 | 3 | 6.4 |
| 2002 | 3 | 6.4 |
| 2003 | 3 | 6.4 |
| 2004 | 7 | 6.4 |
| 2005 | 6 | 6.4 |
| 2006 | 5 | 6.4 |
| 2007 | 6 | 6.4 |
| 2008 | 18 | 6.4 |
| 2009 | 7 | 6.4 |
| 2010 | 6 | 13 |
| 2011 | 6 | 13 |
| 2012 | 8 | 13 |
| 2013 | 5 | 13 |
| 2014 | 26 | 13 |
| 2015 | 26 | 13 |
| 2016 | 20 | 13 |
| 2017 | 13 | 13 |
| 2018 | 12 | 13 |
| 2019 | 8 | 13 |
| 2020 | 22 | 10.1 |
| 2021 | 12 | 10.1 |
| 2022 | 12 | 10.1 |
| 2023 | 1 | 10.1 |
| 2024 | 5 | 10.1 |
| 2025 | 2 | 10.1 |
| 2026 | 17 | 10.1 |
| Year | First date | Last date |
|---|---|---|
| 1940 | 1940-04-11 | 1940-11-15 |
| 1941 | 1941-05-25 | 1941-11-07 |
| 1942 | 1942-05-20 | 1942-11-11 |
| 1943 | 1943-02-12 | 1943-08-01 |
| 1945 | 1945-08-17 | 1945-11-03 |
| 1946 | 1946-08-12 | 1946-10-11 |
| 1947 | 1947-03-25 | 1947-09-22 |
| 1948 | 1948-04-15 | 1948-10-07 |
| 1949 | 1949-08-27 | 1949-11-18 |
| 1950 | 1950-10-12 | 1950-11-23 |
| 1951 | 1951-07-19 | 1951-10-08 |
| 1952 | 1952-08-31 | 1952-11-04 |
| 1953 | 1953-01-10 | 1953-11-25 |
| 1954 | 1954-02-07 | 1954-11-21 |
| 1955 | 1955-08-31 | 1955-09-14 |
| 1956 | 1956-05-14 | 1956-11-10 |
| 1957 | 1957-06-17 | 1957-08-26 |
| 1958 | 1958-04-20 | 1958-10-30 |
| 1959 | 1959-03-11 | 1959-10-15 |
| 1960 | 1960-04-02 | 1960-10-06 |
| 1961 | 1961-08-05 | 1961-10-16 |
| 1962 | 1962-08-09 | 1962-10-30 |
| 1963 | 1963-09-10 | 1963-12-29 |
| 1964 | 1964-04-14 | 1964-11-06 |
| 1965 | 1965-08-09 | 1965-10-25 |
| 1966 | 1966-10-19 | 1966-11-02 |
| 1967 | 1967-05-15 | 1967-10-18 |
| 1968 | 1968-04-09 | 1968-10-24 |
| 1969 | 1969-01-04 | 1969-08-22 |
| 1970 | 1970-05-02 | 1970-09-28 |
| 1971 | 1971-04-04 | 1971-10-11 |
| 1972 | 1972-07-27 | 1972-10-06 |
| 1973 | 1973-06-20 | 1973-10-30 |
| 1974 | 1974-07-20 | 1974-11-12 |
| 1975 | 1975-09-22 | 1975-10-03 |
| 1976 | 1976-01-16 | 1976-11-17 |
| 1977 | 1977-01-17 | 1977-07-28 |
| 1978 | 1978-03-16 | 1978-10-23 |
| 1979 | 1979-05-12 | 1979-09-22 |
| 1980 | 1980-06-28 | 1980-12-30 |
| 1981 | 1981-06-15 | 1981-10-18 |
| 1982 | 1982-08-21 | 1982-11-02 |
| 1983 | 1983-05-18 | 1983-10-26 |
| 1984 | 1984-05-09 | 1984-09-19 |
| 1985 | 1985-04-01 | 1985-10-15 |
| 1986 | 1986-04-20 | 1986-08-19 |
| 1987 | 1987-04-21 | 1987-10-26 |
| 1988 | 1988-03-25 | 1988-09-06 |
| 1989 | 1989-04-04 | 1989-09-25 |
| 1990 | 1990-05-06 | 1990-11-10 |
| 1991 | 1991-08-12 | 1991-11-12 |
| 1992 | 1992-06-23 | 1992-11-03 |
| 1993 | 1993-09-27 | 1993-09-27 |
| 1994 | 1994-03-13 | 1994-10-10 |
| 1995 | 1995-02-19 | 1995-10-02 |
| 1996 | 1996-04-06 | 1996-11-09 |
| 1997 | 1997-03-19 | 1997-11-03 |
| 1998 | 1998-08-29 | 1998-09-03 |
| 1999 | 1999-09-29 | 1999-10-21 |
| 2000 | 2000-06-25 | 2000-09-12 |
| 2002 | 2002-02-22 | 2002-11-15 |
| 2003 | 2003-07-16 | 2003-10-26 |
| 2004 | 2004-03-29 | 2004-09-23 |
| 2005 | 2005-01-19 | 2005-10-14 |
| 2006 | 2006-06-27 | 2006-11-07 |
| 2007 | 2007-03-12 | 2007-10-24 |
| 2008 | 2008-04-12 | 2008-11-17 |
| 2009 | 2009-04-19 | 2009-09-03 |
| 2010 | 2010-09-26 | 2010-11-05 |
| 2011 | 2011-05-02 | 2011-10-12 |
| 2012 | 2012-08-18 | 2012-11-05 |
| 2013 | 2013-08-29 | 2013-10-06 |
| 2014 | 2014-03-16 | 2014-11-07 |
| 2015 | 2015-02-12 | 2015-10-13 |
| 2016 | 2016-02-10 | 2016-11-11 |
| 2017 | 2017-09-01 | 2017-11-23 |
| 2018 | 2018-07-29 | 2018-11-02 |
| 2019 | 2019-09-02 | 2019-11-18 |
| 2020 | 2020-04-26 | 2020-11-16 |
| 2021 | 2021-01-15 | 2021-11-14 |
| 2022 | 2022-02-12 | 2022-10-19 |
| 2023 | 2023-09-11 | 2023-09-11 |
| 2024 | 2024-09-05 | 2024-09-09 |
| 2025 | 2025-08-29 | 2025-10-29 |
| 2026 | 2026-03-08 | 2026-10-07 |
Every Fixed Threshold
| Threshold | Years with a qualifying day | Most days in a year | Year | Latest year days |
|---|---|---|---|---|
| 30 C (86 F): Days | 85 | 26 | 2014 | 17 |
| 35 C (95 F): Days | 40 | 4 | 1963 | 5 |
| 40 C (104 F): Days | 6 | 2 | 1963 | 1 |
| 90 F (32.2 C): Days | 72 | 13 | 2014 | 8 |
| 100 F (37.8 C): Days | 19 | 2 | 1963 | 1 |
| 110 F (43.3 C): Days | 1 | 1 | 1963 | 1 |
| 0 C (32 F): Frost days (min | 2 | 2 | 1949 | 1 |
| 20 C (68 F): Tropical nights (min | 79 | 108 | 1984 | 77 |
| 25 C (77 F): Days with min | 4 | 4 | 1984 | 1 |
| 10 mm (0.39 in): Days with 10 mm or more rain | 87 | 22 | 1941 | 5 |
| 25 mm (0.98 in): Days with 25 mm or more rain | 73 | 7 | 1941 | 1 |
| 50 mm (1.97 in): Days with 50 mm or more rain | 17 | 2 | 1943 | 1 |
Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1940.
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 2026-10-17 (17 October 2026). Threshold counts are computed by this site.
Data as of . Last revised (2026-10-17).