Petersham 3 N Threshold Days by Year
7 fixed thresholds counted per year at Petersham 3 N (USC00196322): hot days, frost, tropical nights and heavy rain, with the most days in a year.
Key Facts for Petersham 3 N Thresholds
- Petersham 3 N: days with 10 mm (0.39 in) or more of precipitation in 64 years, most in 1983 with 53.
- Petersham 3 N: days with 25 mm (0.98 in) or more of precipitation in 64 years, most in 1920 with 19.
- Petersham 3 N: days with 50 mm (1.97 in) or more of precipitation in 54 years, most in 1920 with 8.
- Petersham 3 N: days with 10 cm (3.9 in) or more of snowfall in 35 years, most in 1956 with 15.
- 7 fixed thresholds have at least one qualifying day at Petersham 3 N.
Days with 10 mm (0.39 in) or more of precipitation
64 years with a qualifying day| Year | Days | Decade average |
|---|---|---|
| 1914 | 28 | 31 |
| 1916 | 32 | 31 |
| 1917 | 33 | 31 |
| 1918 | 31 | 31 |
| 1920 | 41 | 38.6 |
| 1921 | 33 | 38.6 |
| 1922 | 39 | 38.6 |
| 1923 | 35 | 38.6 |
| 1927 | 43 | 38.6 |
| 1928 | 39 | 38.6 |
| 1929 | 40 | 38.6 |
| 1930 | 33 | 31.3 |
| 1931 | 31 | 31.3 |
| 1932 | 30 | 31.3 |
| 1942 | 38 | 36.1 |
| 1943 | 36 | 36.1 |
| 1944 | 34 | 36.1 |
| 1945 | 41 | 36.1 |
| 1946 | 36 | 36.1 |
| 1947 | 38 | 36.1 |
| 1949 | 30 | 36.1 |
| 1951 | 32 | 36.8 |
| 1952 | 29 | 36.8 |
| 1953 | 51 | 36.8 |
| 1954 | 38 | 36.8 |
| 1955 | 37 | 36.8 |
| 1956 | 38 | 36.8 |
| 1957 | 29 | 36.8 |
| 1958 | 39 | 36.8 |
| 1959 | 38 | 36.8 |
| 1960 | 44 | 29.9 |
| 1961 | 33 | 29.9 |
| 1962 | 39 | 29.9 |
| 1963 | 23 | 29.9 |
| 1964 | 16 | 29.9 |
| 1965 | 20 | 29.9 |
| 1966 | 26 | 29.9 |
| 1967 | 33 | 29.9 |
| 1968 | 31 | 29.9 |
| 1969 | 34 | 29.9 |
| 1970 | 27 | 38.2 |
| 1971 | 29 | 38.2 |
| 1972 | 44 | 38.2 |
| 1973 | 41 | 38.2 |
| 1974 | 35 | 38.2 |
| 1975 | 46 | 38.2 |
| 1976 | 33 | 38.2 |
| 1977 | 49 | 38.2 |
| 1978 | 36 | 38.2 |
| 1979 | 42 | 38.2 |
| 1980 | 28 | 38.1 |
| 1981 | 47 | 38.1 |
| 1982 | 36 | 38.1 |
| 1983 | 53 | 38.1 |
| 1984 | 42 | 38.1 |
| 1985 | 27 | 38.1 |
| 1986 | 37 | 38.1 |
| 1987 | 33 | 38.1 |
| 1988 | 33 | 38.1 |
| 1989 | 45 | 38.1 |
| 1990 | 38 | 41.3 |
| 1991 | 44 | 41.3 |
| 1993 | 43 | 41.3 |
| 1996 | 40 | 41.3 |
| Year | First date | Last date |
|---|---|---|
| 1914 | 1914-01-21 | 1914-12-21 |
| 1916 | 1916-01-02 | 1916-12-22 |
| 1917 | 1917-01-05 | 1917-12-14 |
| 1918 | 1918-01-08 | 1918-12-25 |
| 1920 | 1920-01-09 | 1920-12-27 |
| 1921 | 1921-01-02 | 1921-12-18 |
| 1922 | 1922-01-12 | 1922-12-29 |
| 1923 | 1923-01-01 | 1923-12-31 |
| 1927 | 1927-01-16 | 1927-12-31 |
| 1928 | 1928-01-20 | 1928-12-28 |
| 1929 | 1929-01-02 | 1929-12-30 |
| 1930 | 1930-01-10 | 1930-12-28 |
| 1931 | 1931-01-07 | 1931-12-25 |
| 1932 | 1932-01-03 | 1932-12-12 |
| 1942 | 1942-01-02 | 1942-12-30 |
| 1943 | 1943-01-19 | 1943-11-23 |
| 1944 | 1944-01-06 | 1944-12-31 |
| 1945 | 1945-01-01 | 1945-12-29 |
| 1946 | 1946-01-09 | 1946-12-28 |
| 1947 | 1947-01-15 | 1947-12-26 |
| 1949 | 1949-01-06 | 1949-12-28 |
| 1951 | 1951-02-01 | 1951-12-26 |
| 1952 | 1952-01-03 | 1952-12-12 |
| 1953 | 1953-01-03 | 1953-12-14 |
| 1954 | 1954-02-22 | 1954-12-30 |
| 1955 | 1955-02-07 | 1955-12-23 |
| 1956 | 1956-01-09 | 1956-12-25 |
| 1957 | 1957-01-23 | 1957-12-27 |
| 1958 | 1958-01-08 | 1958-11-28 |
| 1959 | 1959-01-02 | 1959-12-29 |
| 1960 | 1960-01-03 | 1960-12-30 |
| 1961 | 1961-01-02 | 1961-12-29 |
| 1962 | 1962-01-07 | 1962-12-30 |
| 1963 | 1963-01-12 | 1963-12-24 |
| 1964 | 1964-01-10 | 1964-12-06 |
| 1965 | 1965-01-24 | 1965-12-25 |
| 1966 | 1966-01-02 | 1966-12-29 |
| 1967 | 1967-02-02 | 1967-12-12 |
| 1968 | 1968-01-30 | 1968-12-28 |
| 1969 | 1969-01-01 | 1969-12-27 |
| 1970 | 1970-02-02 | 1970-12-24 |
| 1971 | 1971-01-05 | 1971-12-31 |
| 1972 | 1972-01-03 | 1972-12-31 |
| 1973 | 1973-01-01 | 1973-12-22 |
| 1974 | 1974-01-12 | 1974-12-17 |
| 1975 | 1975-01-12 | 1975-12-31 |
| 1976 | 1976-01-04 | 1976-12-21 |
| 1977 | 1977-01-08 | 1977-12-22 |
| 1978 | 1978-01-09 | 1978-12-25 |
| 1979 | 1979-01-01 | 1979-12-26 |
| 1980 | 1980-01-12 | 1980-11-29 |
| 1981 | 1981-02-02 | 1981-12-23 |
| 1982 | 1982-01-04 | 1982-12-17 |
| 1983 | 1983-01-06 | 1983-12-29 |
| 1984 | 1984-01-11 | 1984-12-22 |
| 1985 | 1985-03-05 | 1985-12-14 |
| 1986 | 1986-01-04 | 1986-12-25 |
| 1987 | 1987-01-02 | 1987-12-16 |
| 1988 | 1988-01-09 | 1988-12-25 |
| 1989 | 1989-01-15 | 1989-11-17 |
| 1990 | 1990-01-01 | 1990-12-31 |
| 1991 | 1991-01-09 | 1991-12-30 |
| 1993 | 1993-01-05 | 1993-12-21 |
| 1996 | 1996-01-03 | 1996-12-25 |
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 | 64 | 53 | 1983 | 40 |
| 25 mm (0.98 in): Days with 25 mm or more rain | 64 | 19 | 1920 | 17 |
| 50 mm (1.97 in): Days with 50 mm or more rain | 54 | 8 | 1920 | 6 |
| 100 mm (3.94 in): Days with 100 mm or more rain | 7 | 1 | 1922 | 1 |
| 10 cm (3.9 in): Days with 10 cm or more snowfall | 35 | 15 | 1956 | 11 |
| 25 cm (9.8 in): Days with 25 cm or more snowfall | 19 | 3 | 1947 | 3 |
| 50 cm (19.7 in): Days with 50 cm or more snowfall | 1 | 1 | 1996 | 1 |
Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1914.
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 2026-10-16 (16 October 2026). Threshold counts are computed by this site.
Data as of . Last revised (2025-12-31).