Olympia AP Threshold Days by Year (USW00024227)
17 fixed thresholds counted per year at Olympia AP (USW00024227): hot days, frost, tropical nights and heavy rain, with the most days in a year.
Key Facts for Olympia AP Thresholds
- Olympia AP: days with a maximum temperature at or above 30 C (86 F) in 85 years, most in 1958 with 33.
- Olympia AP: nights with a minimum temperature at or below 0 C (32 F) in 85 years, most in 1970 with 124.
- Olympia AP: days with 10 mm (0.39 in) or more of precipitation in 85 years, most in 1950 with 61.
- Olympia AP: days with 25 mm (0.98 in) or more of precipitation in 85 years, most in 1999 with 18.
- 17 fixed thresholds have at least one qualifying day at Olympia AP.
Days at or above 30 C (86 F)
85 years with a qualifying day| Year | Days | Decade average |
|---|---|---|
| 1942 | 16 | 13 |
| 1943 | 13 | 13 |
| 1944 | 20 | 13 |
| 1945 | 23 | 13 |
| 1946 | 12 | 13 |
| 1947 | 6 | 13 |
| 1948 | 6 | 13 |
| 1949 | 8 | 13 |
| 1950 | 13 | 12.5 |
| 1951 | 13 | 12.5 |
| 1952 | 15 | 12.5 |
| 1953 | 11 | 12.5 |
| 1954 | 1 | 12.5 |
| 1955 | 5 | 12.5 |
| 1956 | 15 | 12.5 |
| 1957 | 4 | 12.5 |
| 1958 | 33 | 12.5 |
| 1959 | 15 | 12.5 |
| 1960 | 18 | 14.3 |
| 1961 | 22 | 14.3 |
| 1962 | 10 | 14.3 |
| 1963 | 7 | 14.3 |
| 1964 | 4 | 14.3 |
| 1965 | 17 | 14.3 |
| 1966 | 7 | 14.3 |
| 1967 | 32 | 14.3 |
| 1968 | 14 | 14.3 |
| 1969 | 12 | 14.3 |
| 1970 | 15 | 12.8 |
| 1971 | 14 | 12.8 |
| 1972 | 17 | 12.8 |
| 1973 | 13 | 12.8 |
| 1974 | 18 | 12.8 |
| 1975 | 8 | 12.8 |
| 1976 | 1 | 12.8 |
| 1977 | 16 | 12.8 |
| 1978 | 16 | 12.8 |
| 1979 | 10 | 12.8 |
| 1980 | 8 | 14.5 |
| 1981 | 19 | 14.5 |
| 1982 | 21 | 14.5 |
| 1983 | 4 | 14.5 |
| 1984 | 9 | 14.5 |
| 1985 | 23 | 14.5 |
| 1986 | 18 | 14.5 |
| 1987 | 21 | 14.5 |
| 1988 | 14 | 14.5 |
| 1989 | 8 | 14.5 |
| 1990 | 20 | 15 |
| 1991 | 14 | 15 |
| 1992 | 22 | 15 |
| 1993 | 13 | 15 |
| 1994 | 18 | 15 |
| 1995 | 12 | 15 |
| 1996 | 17 | 15 |
| 1997 | 9 | 15 |
| 1998 | 18 | 15 |
| 1999 | 7 | 15 |
| 2000 | 8 | 15.4 |
| 2001 | 7 | 15.4 |
| 2002 | 12 | 15.4 |
| 2003 | 23 | 15.4 |
| 2004 | 22 | 15.4 |
| 2005 | 14 | 15.4 |
| 2006 | 21 | 15.4 |
| 2007 | 11 | 15.4 |
| 2008 | 12 | 15.4 |
| 2009 | 24 | 15.4 |
| 2010 | 14 | 18.4 |
| 2011 | 8 | 18.4 |
| 2012 | 9 | 18.4 |
| 2013 | 12 | 18.4 |
| 2014 | 25 | 18.4 |
| 2015 | 29 | 18.4 |
| 2016 | 20 | 18.4 |
| 2017 | 27 | 18.4 |
| 2018 | 29 | 18.4 |
| 2019 | 11 | 18.4 |
| 2020 | 13 | 20.9 |
| 2021 | 20 | 20.9 |
| 2022 | 25 | 20.9 |
| 2023 | 21 | 20.9 |
| 2024 | 25 | 20.9 |
| 2025 | 24 | 20.9 |
| 2026 | 18 | 20.9 |
| Year | First date | Last date |
|---|---|---|
| 1942 | 1942-06-05 | 1942-09-23 |
| 1943 | 1943-06-29 | 1943-09-24 |
| 1944 | 1944-05-04 | 1944-09-10 |
| 1945 | 1945-05-02 | 1945-09-12 |
| 1946 | 1946-06-20 | 1946-09-10 |
| 1947 | 1947-05-24 | 1947-09-22 |
| 1948 | 1948-06-07 | 1948-09-10 |
| 1949 | 1949-06-05 | 1949-09-06 |
| 1950 | 1950-06-03 | 1950-09-01 |
| 1951 | 1951-05-22 | 1951-09-15 |
| 1952 | 1952-05-17 | 1952-09-22 |
| 1953 | 1953-05-05 | 1953-09-05 |
| 1954 | 1954-08-01 | 1954-08-01 |
| 1955 | 1955-06-08 | 1955-09-05 |
| 1956 | 1956-05-17 | 1956-09-06 |
| 1957 | 1957-07-19 | 1957-09-23 |
| 1958 | 1958-05-18 | 1958-09-07 |
| 1959 | 1959-06-01 | 1959-08-14 |
| 1960 | 1960-06-23 | 1960-09-09 |
| 1961 | 1961-05-19 | 1961-09-13 |
| 1962 | 1962-06-23 | 1962-09-05 |
| 1963 | 1963-05-19 | 1963-09-09 |
| 1964 | 1964-07-11 | 1964-08-24 |
| 1965 | 1965-06-30 | 1965-08-18 |
| 1966 | 1966-06-15 | 1966-09-04 |
| 1967 | 1967-05-20 | 1967-09-27 |
| 1968 | 1968-06-25 | 1968-08-10 |
| 1969 | 1969-05-08 | 1969-09-11 |
| 1970 | 1970-06-01 | 1970-08-22 |
| 1971 | 1971-05-11 | 1971-08-11 |
| 1972 | 1972-05-27 | 1972-09-03 |
| 1973 | 1973-05-13 | 1973-09-05 |
| 1974 | 1974-06-13 | 1974-09-24 |
| 1975 | 1975-06-01 | 1975-09-22 |
| 1976 | 1976-07-23 | 1976-07-23 |
| 1977 | 1977-06-06 | 1977-08-17 |
| 1978 | 1978-06-01 | 1978-08-09 |
| 1979 | 1979-06-02 | 1979-09-14 |
| 1980 | 1980-07-21 | 1980-10-05 |
| 1981 | 1981-07-03 | 1981-09-16 |
| 1982 | 1982-06-10 | 1982-09-02 |
| 1983 | 1983-05-24 | 1983-08-13 |
| 1984 | 1984-07-15 | 1984-08-26 |
| 1985 | 1985-05-16 | 1985-08-24 |
| 1986 | 1986-05-31 | 1986-09-06 |
| 1987 | 1987-04-27 | 1987-10-01 |
| 1988 | 1988-05-21 | 1988-09-13 |
| 1989 | 1989-06-04 | 1989-09-22 |
| 1990 | 1990-06-21 | 1990-09-22 |
| 1991 | 1991-07-02 | 1991-10-11 |
| 1992 | 1992-05-04 | 1992-08-26 |
| 1993 | 1993-05-24 | 1993-09-29 |
| 1994 | 1994-07-07 | 1994-09-22 |
| 1995 | 1995-05-29 | 1995-09-15 |
| 1996 | 1996-07-12 | 1996-08-29 |
| 1997 | 1997-07-04 | 1997-09-24 |
| 1998 | 1998-07-16 | 1998-09-06 |
| 1999 | 1999-06-14 | 1999-09-19 |
| 2000 | 2000-06-04 | 2000-09-14 |
| 2001 | 2001-05-22 | 2001-08-12 |
| 2002 | 2002-06-12 | 2002-08-28 |
| 2003 | 2003-06-05 | 2003-09-05 |
| 2004 | 2004-06-17 | 2004-08-19 |
| 2005 | 2005-05-26 | 2005-08-25 |
| 2006 | 2006-06-25 | 2006-09-03 |
| 2007 | 2007-05-30 | 2007-09-11 |
| 2008 | 2008-05-17 | 2008-08-17 |
| 2009 | 2009-06-03 | 2009-09-22 |
| 2010 | 2010-07-07 | 2010-08-25 |
| 2011 | 2011-07-06 | 2011-09-11 |
| 2012 | 2012-07-08 | 2012-09-07 |
| 2013 | 2013-05-06 | 2013-09-11 |
| 2014 | 2014-05-01 | 2014-09-15 |
| 2015 | 2015-06-06 | 2015-08-27 |
| 2016 | 2016-04-18 | 2016-08-26 |
| 2017 | 2017-05-27 | 2017-09-28 |
| 2018 | 2018-05-14 | 2018-09-06 |
| 2019 | 2019-05-10 | 2019-08-28 |
| 2020 | 2020-05-10 | 2020-09-10 |
| 2021 | 2021-06-01 | 2021-08-14 |
| 2022 | 2022-06-25 | 2022-09-26 |
| 2023 | 2023-05-13 | 2023-09-15 |
| 2024 | 2024-05-10 | 2024-09-06 |
| 2025 | 2025-06-08 | 2025-09-16 |
| 2026 | 2026-06-02 | 2026-08-20 |
Every Fixed Threshold
| Threshold | Years with a qualifying day | Most days in a year | Year | Latest year days |
|---|---|---|---|---|
| 30 C (86 F): Days | 85 | 33 | 1958 | 18 |
| 35 C (95 F): Days | 53 | 6 | 1942 | 2 |
| 40 C (104 F): Days | 3 | 2 | 2021 | 2 |
| 90 F (32.2 C): Days | 80 | 18 | 1967 | 7 |
| 100 F (37.8 C): Days | 13 | 3 | 1942 | 1 |
| 110 F (43.3 C): Days | 1 | 1 | 2021 | 1 |
| 0 C (32 F): Ice days (max | 55 | 18 | 1950 | 2 |
| 0 C (32 F): Frost days (min | 85 | 124 | 1970 | 51 |
| -10 C (14 F): Days with min | 60 | 16 | 1972 | 1 |
| -20 C (-4 F): Days with min | 4 | 2 | 1972 | 1 |
| 20 C (68 F): Tropical nights (min | 1 | 1 | 2006 | 1 |
| 10 mm (0.39 in): Days with 10 mm or more rain | 85 | 61 | 1950 | 20 |
| 25 mm (0.98 in): Days with 25 mm or more rain | 85 | 18 | 1999 | 6 |
| 50 mm (1.97 in): Days with 50 mm or more rain | 63 | 7 | 2015 | 1 |
| 100 mm (3.94 in): Days with 100 mm or more rain | 6 | 1 | 1962 | 1 |
| 10 cm (3.9 in): Days with 10 cm or more snowfall | 30 | 4 | 1969 | 1 |
| 25 cm (9.8 in): Days with 25 cm or more snowfall | 6 | 1 | 1950 | 1 |
Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1942.
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).