Mayfern Threshold Days by Year
5 fixed thresholds counted per year at Mayfern (SF005560880): hot days, frost, tropical nights and heavy rain, with the most days in a year.
Key Facts for Mayfern Thresholds
- Mayfern: days with 10 mm (0.39 in) or more of precipitation in 60 years, most in 1939 with 33.
- Mayfern: days with 25 mm (0.98 in) or more of precipitation in 60 years, most in 1941 with 15.
- Mayfern: days with 50 mm (1.97 in) or more of precipitation in 47 years, most in 1996 with 8.
- Mayfern: days with 100 mm (3.94 in) or more of precipitation in 9 years, most in 1985 with 2.
- 5 fixed thresholds have at least one qualifying day at Mayfern.
Days with 10 mm (0.39 in) or more of precipitation
60 years with a qualifying day| Year | Days | Decade average |
|---|---|---|
| 1933 | 19 | 24.3 |
| 1934 | 24 | 24.3 |
| 1935 | 13 | 24.3 |
| 1936 | 22 | 24.3 |
| 1937 | 29 | 24.3 |
| 1938 | 30 | 24.3 |
| 1939 | 33 | 24.3 |
| 1940 | 29 | 24.1 |
| 1941 | 21 | 24.1 |
| 1942 | 27 | 24.1 |
| 1943 | 29 | 24.1 |
| 1944 | 22 | 24.1 |
| 1945 | 12 | 24.1 |
| 1946 | 25 | 24.1 |
| 1947 | 24 | 24.1 |
| 1948 | 23 | 24.1 |
| 1949 | 29 | 24.1 |
| 1950 | 23 | 24.9 |
| 1951 | 26 | 24.9 |
| 1952 | 22 | 24.9 |
| 1956 | 32 | 24.9 |
| 1957 | 22 | 24.9 |
| 1958 | 21 | 24.9 |
| 1959 | 28 | 24.9 |
| 1960 | 31 | 24.8 |
| 1961 | 23 | 24.8 |
| 1962 | 27 | 24.8 |
| 1963 | 21 | 24.8 |
| 1964 | 28 | 24.8 |
| 1965 | 16 | 24.8 |
| 1966 | 30 | 24.8 |
| 1967 | 24 | 24.8 |
| 1968 | 16 | 24.8 |
| 1969 | 32 | 24.8 |
| 1970 | 14 | 22.3 |
| 1971 | 30 | 22.3 |
| 1972 | 26 | 22.3 |
| 1973 | 22 | 22.3 |
| 1974 | 21 | 22.3 |
| 1975 | 29 | 22.3 |
| 1976 | 24 | 22.3 |
| 1977 | 22 | 22.3 |
| 1978 | 17 | 22.3 |
| 1979 | 18 | 22.3 |
| 1980 | 29 | 24.1 |
| 1981 | 24 | 24.1 |
| 1982 | 11 | 24.1 |
| 1983 | 24 | 24.1 |
| 1984 | 24 | 24.1 |
| 1985 | 22 | 24.1 |
| 1986 | 23 | 24.1 |
| 1987 | 31 | 24.1 |
| 1988 | 22 | 24.1 |
| 1989 | 31 | 24.1 |
| 1990 | 21 | 21.5 |
| 1991 | 23 | 21.5 |
| 1992 | 17 | 21.5 |
| 1994 | 13 | 21.5 |
| 1995 | 22 | 21.5 |
| 1996 | 33 | 21.5 |
| Year | First date | Last date |
|---|---|---|
| 1933 | 1933-01-13 | 1933-12-14 |
| 1934 | 1934-01-01 | 1934-12-26 |
| 1935 | 1935-01-07 | 1935-12-28 |
| 1936 | 1936-01-01 | 1936-12-17 |
| 1937 | 1937-01-03 | 1937-12-31 |
| 1938 | 1938-01-05 | 1938-12-31 |
| 1939 | 1939-01-01 | 1939-12-25 |
| 1940 | 1940-01-17 | 1940-12-28 |
| 1941 | 1941-02-04 | 1941-12-21 |
| 1942 | 1942-01-11 | 1942-12-28 |
| 1943 | 1943-01-03 | 1943-12-26 |
| 1944 | 1944-01-02 | 1944-12-31 |
| 1945 | 1945-01-07 | 1945-12-05 |
| 1946 | 1946-01-10 | 1946-12-21 |
| 1947 | 1947-01-01 | 1947-12-25 |
| 1948 | 1948-01-01 | 1948-12-21 |
| 1949 | 1949-01-12 | 1949-12-29 |
| 1950 | 1950-01-06 | 1950-12-26 |
| 1951 | 1951-01-12 | 1951-12-25 |
| 1952 | 1952-01-03 | 1952-12-29 |
| 1956 | 1956-01-02 | 1956-12-29 |
| 1957 | 1957-01-08 | 1957-12-22 |
| 1958 | 1958-01-03 | 1958-12-28 |
| 1959 | 1959-01-02 | 1959-12-25 |
| 1960 | 1960-01-10 | 1960-12-30 |
| 1961 | 1961-01-14 | 1961-12-26 |
| 1962 | 1962-01-09 | 1962-12-24 |
| 1963 | 1963-01-09 | 1963-12-14 |
| 1964 | 1964-01-01 | 1964-12-30 |
| 1965 | 1965-01-06 | 1965-12-28 |
| 1966 | 1966-01-06 | 1966-12-23 |
| 1967 | 1967-01-04 | 1967-12-10 |
| 1968 | 1968-01-06 | 1968-12-24 |
| 1969 | 1969-01-07 | 1969-12-24 |
| 1970 | 1970-01-19 | 1970-12-18 |
| 1971 | 1971-01-17 | 1971-12-13 |
| 1972 | 1972-01-01 | 1972-12-29 |
| 1973 | 1973-01-03 | 1973-12-26 |
| 1974 | 1974-01-03 | 1974-12-19 |
| 1975 | 1975-01-18 | 1975-12-31 |
| 1976 | 1976-01-07 | 1976-12-26 |
| 1977 | 1977-01-23 | 1977-12-31 |
| 1978 | 1978-01-01 | 1978-12-23 |
| 1979 | 1979-01-01 | 1979-12-12 |
| 1980 | 1980-01-02 | 1980-12-24 |
| 1981 | 1981-01-04 | 1981-12-24 |
| 1982 | 1982-01-01 | 1982-12-31 |
| 1983 | 1983-01-02 | 1983-12-28 |
| 1984 | 1984-01-01 | 1984-12-19 |
| 1985 | 1985-01-15 | 1985-12-31 |
| 1986 | 1986-01-05 | 1986-12-27 |
| 1987 | 1987-01-08 | 1987-12-26 |
| 1988 | 1988-01-07 | 1988-12-17 |
| 1989 | 1989-01-08 | 1989-12-30 |
| 1990 | 1990-01-11 | 1990-12-15 |
| 1991 | 1991-01-01 | 1991-12-25 |
| 1992 | 1992-01-13 | 1992-12-23 |
| 1994 | 1994-01-31 | 1994-11-23 |
| 1995 | 1995-01-08 | 1995-12-24 |
| 1996 | 1996-01-07 | 1996-12-23 |
Every Fixed Threshold
| Threshold | Years with a qualifying day | Most days in a year | Year | Latest year days |
|---|---|---|---|---|
| 10 mm (0.39 in): Days with 10 mm or more rain | 60 | 33 | 1939 | 33 |
| 25 mm (0.98 in): Days with 25 mm or more rain | 60 | 15 | 1941 | 14 |
| 50 mm (1.97 in): Days with 50 mm or more rain | 47 | 8 | 1996 | 8 |
| 100 mm (3.94 in): Days with 100 mm or more rain | 9 | 2 | 1985 | 1 |
| 200 mm (7.87 in): Days with 200 mm or more rain | 2 | 1 | 1939 | 1 |
Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1933.
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 2026-10-14 (14 October 2026). Threshold counts are computed by this site.
Data as of . Last revised (2025-12-31).