Canyon Ferry Dam Threshold Days by Year (USC00241470)
15 fixed thresholds counted per year at Canyon Ferry Dam (USC00241470): hot days, frost, tropical nights and heavy rain, with the most days in a year.
Key Facts for Canyon Ferry Dam Thresholds
- Canyon Ferry Dam: days with a maximum temperature at or above 30 C (86 F) in 39 years, most in 1961 with 66.
- Canyon Ferry Dam: days with a maximum temperature at or below 0 C (32 F) in 39 years, most in 1985 with 75.
- Canyon Ferry Dam: nights with a minimum temperature at or below 0 C (32 F) in 39 years, most in 1965 with 182.
- Canyon Ferry Dam: nights with a minimum temperature at or below -10 C (14 F) in 39 years, most in 1985 with 82.
- 15 fixed thresholds have at least one qualifying day at Canyon Ferry Dam.
Days at or above 30 C (86 F)
39 years with a qualifying day| Year | Days | Decade average |
|---|---|---|
| 1957 | 39 | 36.3 |
| 1958 | 35 | 36.3 |
| 1959 | 35 | 36.3 |
| 1960 | 32 | 36.3 |
| 1961 | 66 | 36.3 |
| 1962 | 24 | 36.3 |
| 1963 | 38 | 36.3 |
| 1964 | 29 | 36.3 |
| 1965 | 22 | 36.3 |
| 1966 | 43 | 36.3 |
| 1967 | 46 | 36.3 |
| 1968 | 21 | 36.3 |
| 1969 | 42 | 36.3 |
| 1970 | 52 | 35.6 |
| 1971 | 46 | 35.6 |
| 1972 | 33 | 35.6 |
| 1973 | 49 | 35.6 |
| 1974 | 43 | 35.6 |
| 1975 | 12 | 35.6 |
| 1976 | 26 | 35.6 |
| 1977 | 29 | 35.6 |
| 1978 | 26 | 35.6 |
| 1979 | 40 | 35.6 |
| 1980 | 17 | 34.5 |
| 1981 | 39 | 34.5 |
| 1982 | 35 | 34.5 |
| 1983 | 33 | 34.5 |
| 1984 | 27 | 34.5 |
| 1985 | 42 | 34.5 |
| 1986 | 34 | 34.5 |
| 1987 | 28 | 34.5 |
| 1988 | 64 | 34.5 |
| 1989 | 26 | 34.5 |
| 1990 | 31 | 24 |
| 1991 | 34 | 24 |
| 1992 | 26 | 24 |
| 1993 | 3 | 24 |
| 1994 | 31 | 24 |
| 1995 | 19 | 24 |
| Year | First date | Last date |
|---|---|---|
| 1957 | 1957-06-04 | 1957-09-27 |
| 1958 | 1958-05-20 | 1958-09-11 |
| 1959 | 1959-06-12 | 1959-08-17 |
| 1960 | 1960-06-29 | 1960-08-21 |
| 1961 | 1961-05-24 | 1961-08-29 |
| 1962 | 1962-06-26 | 1962-08-27 |
| 1963 | 1963-06-19 | 1963-10-02 |
| 1964 | 1964-06-24 | 1964-08-19 |
| 1965 | 1965-07-15 | 1965-08-18 |
| 1966 | 1966-05-04 | 1966-09-22 |
| 1967 | 1967-05-22 | 1967-09-05 |
| 1968 | 1968-07-07 | 1968-08-26 |
| 1969 | 1969-06-05 | 1969-09-11 |
| 1970 | 1970-06-04 | 1970-09-04 |
| 1971 | 1971-06-22 | 1971-08-29 |
| 1972 | 1972-05-31 | 1972-08-29 |
| 1973 | 1973-06-08 | 1973-08-31 |
| 1974 | 1974-06-12 | 1974-08-26 |
| 1975 | 1975-07-03 | 1975-08-07 |
| 1976 | 1976-06-30 | 1976-09-06 |
| 1977 | 1977-06-04 | 1977-09-07 |
| 1978 | 1978-07-14 | 1978-09-04 |
| 1979 | 1979-06-12 | 1979-09-22 |
| 1980 | 1980-07-06 | 1980-09-06 |
| 1981 | 1981-06-26 | 1981-09-18 |
| 1982 | 1982-07-19 | 1982-09-10 |
| 1983 | 1983-06-23 | 1983-09-05 |
| 1984 | 1984-06-26 | 1984-09-19 |
| 1985 | 1985-06-07 | 1985-08-30 |
| 1986 | 1986-05-28 | 1986-08-28 |
| 1987 | 1987-05-08 | 1987-09-03 |
| 1988 | 1988-05-16 | 1988-09-07 |
| 1989 | 1989-06-29 | 1989-09-17 |
| 1990 | 1990-06-23 | 1990-09-07 |
| 1991 | 1991-07-04 | 1991-09-02 |
| 1992 | 1992-06-10 | 1992-08-20 |
| 1993 | 1993-07-29 | 1993-08-11 |
| 1994 | 1994-06-24 | 1994-09-09 |
| 1995 | 1995-07-08 | 1995-09-03 |
Every Fixed Threshold
| Threshold | Years with a qualifying day | Most days in a year | Year | Latest year days |
|---|---|---|---|---|
| 30 C (86 F): Days | 39 | 66 | 1961 | 19 |
| 35 C (95 F): Days | 28 | 18 | 1961 | 3 |
| 40 C (104 F): Days | 1 | 4 | 1961 | 4 |
| 90 F (32.2 C): Days | 38 | 43 | 1961 | 4 |
| 100 F (37.8 C): Days | 3 | 5 | 1961 | 1 |
| 0 C (32 F): Ice days (max | 39 | 75 | 1985 | 39 |
| 0 C (32 F): Frost days (min | 39 | 182 | 1965 | 149 |
| -10 C (14 F): Days with min | 39 | 82 | 1985 | 47 |
| -20 C (-4 F): Days with min | 38 | 30 | 1979 | 5 |
| -30 C (-22 F): Days with min | 18 | 5 | 1962 | 1 |
| 20 C (68 F): Tropical nights (min | 3 | 1 | 1969 | 1 |
| 10 mm (0.39 in): Days with 10 mm or more rain | 39 | 13 | 1975 | 4 |
| 25 mm (0.98 in): Days with 25 mm or more rain | 17 | 3 | 1980 | 1 |
| 50 mm (1.97 in): Days with 50 mm or more rain | 2 | 1 | 1981 | 1 |
| 10 cm (3.9 in): Days with 10 cm or more snowfall | 1 | 1 | 1958 | 1 |
Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1957.
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 (2025-12-31).