Clearwater Dam Threshold Days by Year (USC00231674)
19 fixed thresholds counted per year at Clearwater Dam (USC00231674): hot days, frost, tropical nights and heavy rain, with the most days in a year.
Key Facts for Clearwater Dam Thresholds
- Clearwater Dam: days with 10 mm (0.39 in) or more of precipitation in 66 years, most in 2019 with 52.
- Clearwater Dam: days with 25 mm (0.98 in) or more of precipitation in 66 years, most in 2019 with 24.
- Clearwater Dam: days with a maximum temperature at or above 30 C (86 F) in 62 years, most in 1954 with 124.
- Clearwater Dam: days with a maximum temperature at or above 90 F (32.2 C) in 62 years, most in 1952 with 91.
- 19 fixed thresholds have at least one qualifying day at Clearwater Dam.
Days at or above 30 C (86 F)
62 years with a qualifying day| Year | Days | Decade average |
|---|---|---|
| 1947 | 89 | 85.3 |
| 1948 | 93 | 85.3 |
| 1949 | 74 | 85.3 |
| 1950 | 63 | 101.3 |
| 1951 | 85 | 101.3 |
| 1952 | 115 | 101.3 |
| 1953 | 114 | 101.3 |
| 1954 | 124 | 101.3 |
| 1955 | 104 | 101.3 |
| 1956 | 107 | 101.3 |
| 1957 | 87 | 101.3 |
| 1958 | 102 | 101.3 |
| 1959 | 112 | 101.3 |
| 1960 | 104 | 94.5 |
| 1961 | 91 | 94.5 |
| 1962 | 118 | 94.5 |
| 1963 | 121 | 94.5 |
| 1964 | 100 | 94.5 |
| 1965 | 100 | 94.5 |
| 1966 | 73 | 94.5 |
| 1967 | 84 | 94.5 |
| 1968 | 77 | 94.5 |
| 1969 | 77 | 94.5 |
| 1970 | 77 | 75.8 |
| 1971 | 79 | 75.8 |
| 1972 | 72 | 75.8 |
| 1973 | 43 | 75.8 |
| 1974 | 60 | 75.8 |
| 1977 | 101 | 75.8 |
| 1978 | 98 | 75.8 |
| 1979 | 76 | 75.8 |
| 1980 | 110 | 88.3 |
| 1981 | 83 | 88.3 |
| 1982 | 58 | 88.3 |
| 1983 | 97 | 88.3 |
| 1984 | 93 | 88.3 |
| 1985 | 80 | 88.3 |
| 1986 | 97 | 88.3 |
| 1987 | 99 | 88.3 |
| 1988 | 93 | 88.3 |
| 1989 | 73 | 88.3 |
| 1990 | 79 | 82.5 |
| 1991 | 102 | 82.5 |
| 1992 | 64 | 82.5 |
| 1996 | 78 | 82.5 |
| 1997 | 70 | 82.5 |
| 1998 | 102 | 82.5 |
| 2007 | 91 | 66.3 |
| 2008 | 59 | 66.3 |
| 2009 | 49 | 66.3 |
| 2010 | 90 | 76.9 |
| 2011 | 82 | 76.9 |
| 2015 | 46 | 76.9 |
| 2016 | 74 | 76.9 |
| 2017 | 64 | 76.9 |
| 2018 | 109 | 76.9 |
| 2019 | 73 | 76.9 |
| 2020 | 66 | 70.8 |
| 2021 | 61 | 70.8 |
| 2023 | 65 | 70.8 |
| 2025 | 75 | 70.8 |
| 2026 | 87 | 70.8 |
| Year | First date | Last date |
|---|---|---|
| 1947 | 1947-04-30 | 1947-10-14 |
| 1948 | 1948-04-07 | 1948-09-22 |
| 1949 | 1949-05-03 | 1949-09-06 |
| 1950 | 1950-04-23 | 1950-11-01 |
| 1951 | 1951-05-03 | 1951-10-04 |
| 1952 | 1952-04-28 | 1952-10-02 |
| 1953 | 1953-04-09 | 1953-10-03 |
| 1954 | 1954-04-05 | 1954-10-10 |
| 1955 | 1955-04-16 | 1955-09-30 |
| 1956 | 1956-04-14 | 1956-09-30 |
| 1957 | 1957-04-19 | 1957-09-21 |
| 1958 | 1958-04-17 | 1958-09-26 |
| 1959 | 1959-04-05 | 1959-10-03 |
| 1960 | 1960-04-20 | 1960-09-24 |
| 1961 | 1961-05-29 | 1961-10-12 |
| 1962 | 1962-02-13 | 1962-10-11 |
| 1963 | 1963-03-29 | 1963-10-22 |
| 1964 | 1964-04-16 | 1964-09-20 |
| 1965 | 1965-04-11 | 1965-09-20 |
| 1966 | 1966-05-05 | 1966-09-03 |
| 1967 | 1967-03-11 | 1967-10-06 |
| 1968 | 1968-03-29 | 1968-11-01 |
| 1969 | 1969-04-17 | 1969-10-05 |
| 1970 | 1970-04-28 | 1970-09-23 |
| 1971 | 1971-04-13 | 1971-10-03 |
| 1972 | 1972-04-14 | 1972-09-21 |
| 1973 | 1973-05-10 | 1973-10-04 |
| 1974 | 1974-05-19 | 1974-09-01 |
| 1977 | 1977-04-15 | 1977-10-02 |
| 1978 | 1978-04-02 | 1978-10-13 |
| 1979 | 1979-05-09 | 1979-10-22 |
| 1980 | 1980-04-22 | 1980-10-11 |
| 1981 | 1981-04-01 | 1981-10-06 |
| 1982 | 1982-05-06 | 1982-09-16 |
| 1983 | 1983-05-29 | 1983-10-04 |
| 1984 | 1984-04-28 | 1984-09-25 |
| 1985 | 1985-03-29 | 1985-09-23 |
| 1986 | 1986-03-30 | 1986-10-05 |
| 1987 | 1987-04-21 | 1987-09-27 |
| 1988 | 1988-04-06 | 1988-09-23 |
| 1989 | 1989-04-23 | 1989-10-14 |
| 1990 | 1990-04-24 | 1990-09-29 |
| 1991 | 1991-05-15 | 1991-09-17 |
| 1992 | 1992-04-15 | 1992-09-18 |
| 1996 | 1996-05-09 | 1996-09-12 |
| 1997 | 1997-03-22 | 1997-10-05 |
| 1998 | 1998-05-13 | 1998-09-30 |
| 2007 | 2007-04-30 | 2007-10-07 |
| 2008 | 2008-05-20 | 2008-09-13 |
| 2009 | 2009-04-24 | 2009-08-28 |
| 2010 | 2010-05-06 | 2010-10-11 |
| 2011 | 2011-04-11 | 2011-10-17 |
| 2015 | 2015-06-08 | 2015-09-19 |
| 2016 | 2016-05-08 | 2016-10-20 |
| 2017 | 2017-03-21 | 2017-10-15 |
| 2018 | 2018-05-10 | 2018-10-09 |
| 2019 | 2019-05-17 | 2019-10-03 |
| 2020 | 2020-05-03 | 2020-10-08 |
| 2021 | 2021-05-24 | 2021-09-30 |
| 2023 | 2023-05-09 | 2023-10-03 |
| 2025 | 2025-06-09 | 2025-10-01 |
| 2026 | 2026-03-21 | 2026-10-14 |
Every Fixed Threshold
| Threshold | Years with a qualifying day | Most days in a year | Year | Latest year days |
|---|---|---|---|---|
| 30 C (86 F): Days | 62 | 124 | 1954 | 87 |
| 35 C (95 F): Days | 60 | 60 | 1954 | 20 |
| 40 C (104 F): Days | 12 | 16 | 1980 | 1 |
| 90 F (32.2 C): Days | 62 | 91 | 1952 | 54 |
| 100 F (37.8 C): Days | 34 | 33 | 1980 | 3 |
| 110 F (43.3 C): Days | 1 | 3 | 1980 | 3 |
| 0 C (32 F): Ice days (max | 62 | 34 | 1978 | 10 |
| 0 C (32 F): Frost days (min | 62 | 130 | 1960 | 52 |
| -10 C (14 F): Days with min | 61 | 42 | 1979 | 16 |
| -20 C (-4 F): Days with min | 22 | 7 | 1977 | 2 |
| 20 C (68 F): Tropical nights (min | 62 | 60 | 2018 | 66 |
| 25 C (77 F): Days with min | 4 | 3 | 2023 | 3 |
| 10 mm (0.39 in): Days with 10 mm or more rain | 66 | 52 | 2019 | 14 |
| 25 mm (0.98 in): Days with 25 mm or more rain | 66 | 24 | 2019 | 4 |
| 50 mm (1.97 in): Days with 50 mm or more rain | 61 | 7 | 1979 | 2 |
| 100 mm (3.94 in): Days with 100 mm or more rain | 13 | 4 | 1982 | 1 |
| 200 mm (7.87 in): Days with 200 mm or more rain | 2 | 1 | 2008 | 1 |
| 10 cm (3.9 in): Days with 10 cm or more snowfall | 16 | 4 | 1969 | 1 |
| 25 cm (9.8 in): Days with 25 cm or more snowfall | 1 | 0 | n/a | 1 |
Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1947.
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).