Bo-Downes Threshold Days by Year (SF001097850)
3 fixed thresholds counted per year at Bo-Downes (SF001097850): hot days, frost, tropical nights and heavy rain, with the most days in a year.
Key Facts for Bo-Downes Thresholds
- Bo-Downes: days with 10 mm (0.39 in) or more of precipitation in 65 years, most in 1977 with 13.
- Bo-Downes: days with 25 mm (0.98 in) or more of precipitation in 33 years, most in 1961 with 5.
- Bo-Downes: days with 50 mm (1.97 in) or more of precipitation in 6 years, most in 1961 with 2.
- 3 fixed thresholds have at least one qualifying day at Bo-Downes.
Days with 10 mm (0.39 in) or more of precipitation
65 years with a qualifying day| Year | Days | Decade average |
|---|---|---|
| 1928 | 1 | 1 |
| 1930 | 2 | 4.9 |
| 1931 | 5 | 4.9 |
| 1932 | 4 | 4.9 |
| 1933 | 7 | 4.9 |
| 1934 | 6 | 4.9 |
| 1935 | 3 | 4.9 |
| 1936 | 4 | 4.9 |
| 1937 | 7 | 4.9 |
| 1938 | 4 | 4.9 |
| 1939 | 7 | 4.9 |
| 1940 | 3 | 4.6 |
| 1941 | 5 | 4.6 |
| 1943 | 5 | 4.6 |
| 1944 | 7 | 4.6 |
| 1945 | 5 | 4.6 |
| 1946 | 3 | 4.6 |
| 1947 | 3 | 4.6 |
| 1948 | 7 | 4.6 |
| 1949 | 3 | 4.6 |
| 1951 | 3 | 5.6 |
| 1952 | 7 | 5.6 |
| 1955 | 7 | 5.6 |
| 1956 | 7 | 5.6 |
| 1957 | 6 | 5.6 |
| 1958 | 4 | 5.6 |
| 1959 | 5 | 5.6 |
| 1960 | 2 | 4.4 |
| 1961 | 11 | 4.4 |
| 1962 | 5 | 4.4 |
| 1963 | 7 | 4.4 |
| 1964 | 2 | 4.4 |
| 1965 | 2 | 4.4 |
| 1966 | 1 | 4.4 |
| 1967 | 6 | 4.4 |
| 1968 | 7 | 4.4 |
| 1969 | 1 | 4.4 |
| 1970 | 3 | 5.5 |
| 1971 | 2 | 5.5 |
| 1972 | 2 | 5.5 |
| 1973 | 6 | 5.5 |
| 1974 | 6 | 5.5 |
| 1975 | 7 | 5.5 |
| 1976 | 12 | 5.5 |
| 1977 | 13 | 5.5 |
| 1978 | 2 | 5.5 |
| 1979 | 2 | 5.5 |
| 1980 | 6 | 5.1 |
| 1981 | 5 | 5.1 |
| 1982 | 5 | 5.1 |
| 1983 | 6 | 5.1 |
| 1984 | 7 | 5.1 |
| 1985 | 5 | 5.1 |
| 1986 | 4 | 5.1 |
| 1987 | 5 | 5.1 |
| 1988 | 5 | 5.1 |
| 1989 | 3 | 5.1 |
| 1990 | 4 | 6.5 |
| 1991 | 8 | 6.5 |
| 1992 | 1 | 6.5 |
| 1993 | 6 | 6.5 |
| 1994 | 5 | 6.5 |
| 1995 | 12 | 6.5 |
| 1996 | 11 | 6.5 |
| 1997 | 5 | 6.5 |
| Year | First date | Last date |
|---|---|---|
| 1928 | 1928-02-24 | 1928-02-24 |
| 1930 | 1930-08-11 | 1930-09-28 |
| 1931 | 1931-02-27 | 1931-11-19 |
| 1932 | 1932-03-17 | 1932-11-13 |
| 1933 | 1933-04-05 | 1933-11-26 |
| 1934 | 1934-02-16 | 1934-11-17 |
| 1935 | 1935-02-28 | 1935-08-15 |
| 1936 | 1936-03-27 | 1936-09-09 |
| 1937 | 1937-01-25 | 1937-12-17 |
| 1938 | 1938-04-15 | 1938-11-08 |
| 1939 | 1939-02-01 | 1939-08-21 |
| 1940 | 1940-02-02 | 1940-04-29 |
| 1941 | 1941-02-11 | 1941-07-28 |
| 1943 | 1943-03-14 | 1943-11-30 |
| 1944 | 1944-02-26 | 1944-10-22 |
| 1945 | 1945-03-08 | 1945-08-11 |
| 1946 | 1946-04-04 | 1946-10-22 |
| 1947 | 1947-03-04 | 1947-05-06 |
| 1948 | 1948-02-26 | 1948-10-11 |
| 1949 | 1949-02-26 | 1949-11-02 |
| 1951 | 1951-06-07 | 1951-07-24 |
| 1952 | 1952-02-21 | 1952-12-14 |
| 1955 | 1955-02-21 | 1955-11-28 |
| 1956 | 1956-01-15 | 1956-12-21 |
| 1957 | 1957-02-21 | 1957-09-12 |
| 1958 | 1958-01-12 | 1958-11-09 |
| 1959 | 1959-03-14 | 1959-12-12 |
| 1960 | 1960-05-23 | 1960-12-18 |
| 1961 | 1961-01-01 | 1961-11-12 |
| 1962 | 1962-06-11 | 1962-08-09 |
| 1963 | 1963-01-03 | 1963-12-04 |
| 1964 | 1964-06-05 | 1964-11-04 |
| 1965 | 1965-03-22 | 1965-04-16 |
| 1966 | 1966-01-30 | 1966-01-30 |
| 1967 | 1967-02-15 | 1967-08-27 |
| 1968 | 1968-03-27 | 1968-11-13 |
| 1969 | 1969-03-17 | 1969-03-17 |
| 1970 | 1970-02-04 | 1970-06-18 |
| 1971 | 1971-07-08 | 1971-08-02 |
| 1972 | 1972-01-05 | 1972-06-12 |
| 1973 | 1973-02-21 | 1973-12-22 |
| 1974 | 1974-02-02 | 1974-08-20 |
| 1975 | 1975-01-30 | 1975-12-22 |
| 1976 | 1976-01-03 | 1976-11-23 |
| 1977 | 1977-01-28 | 1977-11-30 |
| 1978 | 1978-01-23 | 1978-10-03 |
| 1979 | 1979-06-04 | 1979-06-10 |
| 1980 | 1980-03-11 | 1980-11-29 |
| 1981 | 1981-03-23 | 1981-10-19 |
| 1982 | 1982-04-04 | 1982-10-11 |
| 1983 | 1983-05-14 | 1983-12-31 |
| 1984 | 1984-03-10 | 1984-10-06 |
| 1985 | 1985-01-13 | 1985-12-19 |
| 1986 | 1986-04-25 | 1986-06-20 |
| 1987 | 1987-02-12 | 1987-08-11 |
| 1988 | 1988-03-07 | 1988-08-28 |
| 1989 | 1989-04-20 | 1989-06-25 |
| 1990 | 1990-04-21 | 1990-07-09 |
| 1991 | 1991-01-26 | 1991-10-14 |
| 1992 | 1992-03-27 | 1992-03-27 |
| 1993 | 1993-02-10 | 1993-07-26 |
| 1994 | 1994-02-08 | 1994-09-17 |
| 1995 | 1995-01-13 | 1995-12-22 |
| 1996 | 1996-07-04 | 1996-11-21 |
| 1997 | 1997-03-18 | 1997-06-27 |
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 | 65 | 13 | 1977 | 5 |
| 25 mm (0.98 in): Days with 25 mm or more rain | 33 | 5 | 1961 | 1 |
| 50 mm (1.97 in): Days with 50 mm or more rain | 6 | 2 | 1961 | 1 |
Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1928.
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).