Mt Shasta Threshold Days by Year (USC00045983)
17 fixed thresholds counted per year at Mt Shasta (USC00045983): hot days, frost, tropical nights and heavy rain, with the most days in a year.
Key Facts for Mt Shasta Thresholds
- Mt Shasta: days with 10 mm (0.39 in) or more of precipitation in 65 years, most in 1983 with 57.
- Mt Shasta: days with 25 mm (0.98 in) or more of precipitation in 65 years, most in 1995 with 21.
- Mt Shasta: nights with a minimum temperature at or below 0 C (32 F) in 64 years, most in 1955 with 160.
- Mt Shasta: days with 10 cm (3.9 in) or more of snowfall in 61 years, most in 1952 with 25.
- 17 fixed thresholds have at least one qualifying day at Mt Shasta.
Days at or above 30 C (86 F)
55 years with a qualifying day| Year | Days | Decade average |
|---|---|---|
| 1949 | 33 | 33 |
| 1950 | 55 | 44 |
| 1951 | 65 | 44 |
| 1952 | 49 | 44 |
| 1953 | 38 | 44 |
| 1954 | 30 | 44 |
| 1955 | 51 | 44 |
| 1956 | 27 | 44 |
| 1957 | 31 | 44 |
| 1958 | 49 | 44 |
| 1959 | 45 | 44 |
| 1960 | 62 | 44.1 |
| 1961 | 55 | 44.1 |
| 1962 | 39 | 44.1 |
| 1963 | 34 | 44.1 |
| 1964 | 31 | 44.1 |
| 1965 | 27 | 44.1 |
| 1966 | 43 | 44.1 |
| 1967 | 65 | 44.1 |
| 1968 | 42 | 44.1 |
| 1969 | 43 | 44.1 |
| 1970 | 54 | 42.4 |
| 1971 | 35 | 42.4 |
| 1972 | 40 | 42.4 |
| 1973 | 59 | 42.4 |
| 1974 | 48 | 42.4 |
| 1975 | 37 | 42.4 |
| 1976 | 29 | 42.4 |
| 1977 | 52 | 42.4 |
| 1978 | 31 | 42.4 |
| 1979 | 39 | 42.4 |
| 1980 | 35 | 37.7 |
| 1981 | 58 | 37.7 |
| 1982 | 31 | 37.7 |
| 1983 | 33 | 37.7 |
| 1988 | 56 | 37.7 |
| 1989 | 13 | 37.7 |
| 1990 | 34 | 38 |
| 1991 | 47 | 38 |
| 1992 | 43 | 38 |
| 1994 | 44 | 38 |
| 1995 | 22 | 38 |
| 2004 | 31 | 55.2 |
| 2005 | 53 | 55.2 |
| 2006 | 65 | 55.2 |
| 2007 | 52 | 55.2 |
| 2008 | 61 | 55.2 |
| 2009 | 69 | 55.2 |
| 2011 | 61 | 60 |
| 2012 | 79 | 60 |
| 2013 | 38 | 60 |
| 2018 | 62 | 60 |
| 2024 | 58 | 42.7 |
| 2025 | 37 | 42.7 |
| 2026 | 33 | 42.7 |
| Year | First date | Last date |
|---|---|---|
| 1949 | 1949-06-06 | 1949-09-23 |
| 1950 | 1950-05-30 | 1950-09-06 |
| 1951 | 1951-05-26 | 1951-09-20 |
| 1952 | 1952-06-04 | 1952-10-06 |
| 1953 | 1953-07-02 | 1953-09-20 |
| 1954 | 1954-05-17 | 1954-09-26 |
| 1955 | 1955-06-06 | 1955-09-12 |
| 1956 | 1956-06-26 | 1956-09-06 |
| 1957 | 1957-06-23 | 1957-09-23 |
| 1958 | 1958-06-16 | 1958-10-04 |
| 1959 | 1959-06-18 | 1959-09-09 |
| 1960 | 1960-06-01 | 1960-10-01 |
| 1961 | 1961-06-13 | 1961-10-14 |
| 1962 | 1962-06-22 | 1962-09-17 |
| 1963 | 1963-05-20 | 1963-10-02 |
| 1964 | 1964-06-23 | 1964-10-05 |
| 1965 | 1965-06-10 | 1965-09-24 |
| 1966 | 1966-05-24 | 1966-09-29 |
| 1967 | 1967-05-21 | 1967-09-28 |
| 1968 | 1968-06-16 | 1968-09-26 |
| 1969 | 1969-06-02 | 1969-09-12 |
| 1970 | 1970-05-15 | 1970-10-02 |
| 1971 | 1971-07-14 | 1971-09-13 |
| 1972 | 1972-05-27 | 1972-09-15 |
| 1973 | 1973-05-12 | 1973-09-12 |
| 1974 | 1974-06-01 | 1974-09-25 |
| 1975 | 1975-05-30 | 1975-09-30 |
| 1976 | 1976-05-12 | 1976-09-10 |
| 1977 | 1977-06-05 | 1977-09-12 |
| 1978 | 1978-06-05 | 1978-09-24 |
| 1979 | 1979-06-02 | 1979-10-04 |
| 1980 | 1980-07-15 | 1980-10-07 |
| 1981 | 1981-04-30 | 1981-09-17 |
| 1982 | 1982-05-25 | 1982-09-08 |
| 1983 | 1983-05-24 | 1983-09-15 |
| 1988 | 1988-06-15 | 1988-09-30 |
| 1989 | 1989-07-06 | 1989-08-08 |
| 1990 | 1990-06-20 | 1990-09-10 |
| 1991 | 1991-06-09 | 1991-10-10 |
| 1992 | 1992-05-04 | 1992-10-11 |
| 1994 | 1994-06-10 | 1994-09-27 |
| 1995 | 1995-06-24 | 1995-09-14 |
| 2004 | 2004-07-05 | 2004-09-09 |
| 2005 | 2005-05-25 | 2005-09-20 |
| 2006 | 2006-05-15 | 2006-09-29 |
| 2007 | 2007-05-29 | 2007-09-11 |
| 2008 | 2008-05-15 | 2008-09-29 |
| 2009 | 2009-04-21 | 2009-09-27 |
| 2011 | 2011-06-21 | 2011-09-29 |
| 2012 | 2012-05-13 | 2012-10-02 |
| 2013 | 2013-06-04 | 2013-09-15 |
| 2018 | 2018-06-03 | 2018-09-28 |
| 2024 | 2024-06-05 | 2024-09-09 |
| 2025 | 2025-05-31 | 2025-08-26 |
| 2026 | 2026-06-13 | 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 | 55 | 79 | 2012 | 33 |
| 35 C (95 F): Days | 48 | 22 | 2009 | 1 |
| 40 C (104 F): Days | 1 | 2 | 1981 | 2 |
| 90 F (32.2 C): Days | 55 | 46 | 2009 | 12 |
| 100 F (37.8 C): Days | 14 | 4 | 1981 | 1 |
| 0 C (32 F): Ice days (max | 52 | 24 | 1949 | 1 |
| 0 C (32 F): Frost days (min | 64 | 160 | 1955 | 72 |
| -10 C (14 F): Days with min | 59 | 25 | 1949 | 4 |
| -20 C (-4 F): Days with min | 3 | 2 | 1972 | 1 |
| 20 C (68 F): Tropical nights (min | 2 | 1 | 1972 | 1 |
| 10 mm (0.39 in): Days with 10 mm or more rain | 65 | 57 | 1983 | 12 |
| 25 mm (0.98 in): Days with 25 mm or more rain | 65 | 21 | 1995 | 6 |
| 50 mm (1.97 in): Days with 50 mm or more rain | 59 | 9 | 1995 | 2 |
| 100 mm (3.94 in): Days with 100 mm or more rain | 14 | 3 | 1995 | 2 |
| 10 cm (3.9 in): Days with 10 cm or more snowfall | 61 | 25 | 1952 | 4 |
| 25 cm (9.8 in): Days with 25 cm or more snowfall | 47 | 13 | 1952 | 2 |
| 50 cm (19.7 in): Days with 50 cm or more snowfall | 18 | 2 | 1952 | 1 |
Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1949.
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 (2026-10-12).