Princeton Wtr Wks Threshold Days by Year (USC00287328)
6 fixed thresholds counted per year at Princeton Wtr Wks (USC00287328): hot days, frost, tropical nights and heavy rain, with the most days in a year.
Key Facts for Princeton Wtr Wks Thresholds
- Princeton Wtr Wks: days with 10 mm (0.39 in) or more of precipitation in 42 years, most in 1983 with 55.
- Princeton Wtr Wks: days with 25 mm (0.98 in) or more of precipitation in 42 years, most in 1983 with 24.
- Princeton Wtr Wks: days with 50 mm (1.97 in) or more of precipitation in 39 years, most in 1975 with 6.
- Princeton Wtr Wks: days with 100 mm (3.94 in) or more of precipitation in 9 years, most in 1975 with 2.
- 6 fixed thresholds have at least one qualifying day at Princeton Wtr Wks.
Days with 10 mm (0.39 in) or more of precipitation
42 years with a qualifying day| Year | Days | Decade average |
|---|---|---|
| 1942 | 45 | 37.3 |
| 1943 | 33 | 37.3 |
| 1944 | 40 | 37.3 |
| 1945 | 43 | 37.3 |
| 1946 | 26 | 37.3 |
| 1947 | 37 | 37.3 |
| 1950 | 36 | 37.6 |
| 1951 | 38 | 37.6 |
| 1952 | 45 | 37.6 |
| 1953 | 47 | 37.6 |
| 1954 | 32 | 37.6 |
| 1955 | 32 | 37.6 |
| 1956 | 36 | 37.6 |
| 1957 | 33 | 37.6 |
| 1958 | 39 | 37.6 |
| 1959 | 38 | 37.6 |
| 1960 | 39 | 34 |
| 1961 | 40 | 34 |
| 1962 | 35 | 34 |
| 1963 | 28 | 34 |
| 1964 | 32 | 34 |
| 1965 | 23 | 34 |
| 1966 | 27 | 34 |
| 1967 | 46 | 34 |
| 1968 | 30 | 34 |
| 1969 | 40 | 34 |
| 1970 | 37 | 40.4 |
| 1971 | 39 | 40.4 |
| 1972 | 39 | 40.4 |
| 1973 | 46 | 40.4 |
| 1974 | 44 | 40.4 |
| 1975 | 47 | 40.4 |
| 1976 | 26 | 40.4 |
| 1977 | 43 | 40.4 |
| 1978 | 43 | 40.4 |
| 1980 | 32 | 38.3 |
| 1981 | 34 | 38.3 |
| 1982 | 41 | 38.3 |
| 1983 | 55 | 38.3 |
| 1984 | 41 | 38.3 |
| 1985 | 33 | 38.3 |
| 1986 | 32 | 38.3 |
| Year | First date | Last date |
|---|---|---|
| 1942 | 1942-01-03 | 1942-12-30 |
| 1943 | 1943-01-18 | 1943-12-27 |
| 1944 | 1944-01-03 | 1944-12-31 |
| 1945 | 1945-01-01 | 1945-12-31 |
| 1946 | 1946-02-20 | 1946-12-21 |
| 1947 | 1947-01-02 | 1947-12-26 |
| 1950 | 1950-01-10 | 1950-12-29 |
| 1951 | 1951-01-14 | 1951-12-25 |
| 1952 | 1952-01-02 | 1952-12-31 |
| 1953 | 1953-01-07 | 1953-12-14 |
| 1954 | 1954-01-11 | 1954-12-29 |
| 1955 | 1955-02-06 | 1955-11-19 |
| 1956 | 1956-01-10 | 1956-12-15 |
| 1957 | 1957-01-23 | 1957-12-26 |
| 1958 | 1958-01-14 | 1958-12-04 |
| 1959 | 1959-01-01 | 1959-12-28 |
| 1960 | 1960-01-03 | 1960-12-29 |
| 1961 | 1961-01-01 | 1961-12-23 |
| 1962 | 1962-01-06 | 1962-12-06 |
| 1963 | 1963-01-12 | 1963-12-23 |
| 1964 | 1964-01-01 | 1964-12-27 |
| 1965 | 1965-01-08 | 1965-12-25 |
| 1966 | 1966-01-02 | 1966-12-29 |
| 1967 | 1967-01-27 | 1967-12-28 |
| 1968 | 1968-01-14 | 1968-12-14 |
| 1969 | 1969-01-23 | 1969-12-31 |
| 1970 | 1970-02-02 | 1970-12-17 |
| 1971 | 1971-01-01 | 1971-12-07 |
| 1972 | 1972-01-02 | 1972-12-22 |
| 1973 | 1973-01-04 | 1973-12-26 |
| 1974 | 1974-01-03 | 1974-12-31 |
| 1975 | 1975-01-09 | 1975-12-31 |
| 1976 | 1976-01-01 | 1976-12-07 |
| 1977 | 1977-01-10 | 1977-12-22 |
| 1978 | 1978-01-09 | 1978-12-25 |
| 1980 | 1980-03-11 | 1980-11-25 |
| 1981 | 1981-01-07 | 1981-12-16 |
| 1982 | 1982-01-01 | 1982-12-17 |
| 1983 | 1983-01-06 | 1983-12-29 |
| 1984 | 1984-01-11 | 1984-12-28 |
| 1985 | 1985-01-11 | 1985-11-29 |
| 1986 | 1986-01-03 | 1986-11-27 |
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 | 42 | 55 | 1983 | 32 |
| 25 mm (0.98 in): Days with 25 mm or more rain | 42 | 24 | 1983 | 12 |
| 50 mm (1.97 in): Days with 50 mm or more rain | 39 | 6 | 1975 | 3 |
| 100 mm (3.94 in): Days with 100 mm or more rain | 9 | 2 | 1975 | 1 |
| 10 cm (3.9 in): Days with 10 cm or more snowfall | 5 | 4 | 1978 | 1 |
| 25 cm (9.8 in): Days with 25 cm or more snowfall | 1 | 1 | 1978 | 1 |
Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1942.
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).