Shepaug Dam Threshold Days by Year (USC00067373)
17 fixed thresholds counted per year at Shepaug Dam (USC00067373): hot days, frost, tropical nights and heavy rain, with the most days in a year.
Key Facts for Shepaug Dam Thresholds
- Shepaug Dam: days with 10 mm (0.39 in) or more of precipitation in 47 years, most in 1972 with 54.
- Shepaug Dam: days with 25 mm (0.98 in) or more of precipitation in 47 years, most in 1979 with 21.
- Shepaug Dam: days with 10 cm (3.9 in) or more of snowfall in 46 years, most in 1967 with 9.
- Shepaug Dam: days with a maximum temperature at or below 0 C (32 F) in 44 years, most in 1978 with 63.
- 17 fixed thresholds have at least one qualifying day at Shepaug Dam.
Days at or above 30 C (86 F)
43 years with a qualifying day| Year | Days | Decade average |
|---|---|---|
| 1951 | 2 | 12.5 |
| 1952 | 9 | 12.5 |
| 1953 | 18 | 12.5 |
| 1954 | 3 | 12.5 |
| 1955 | 24 | 12.5 |
| 1956 | 5 | 12.5 |
| 1957 | 11 | 12.5 |
| 1959 | 28 | 12.5 |
| 1960 | 4 | 12.3 |
| 1961 | 13 | 12.3 |
| 1962 | 8 | 12.3 |
| 1963 | 15 | 12.3 |
| 1964 | 16 | 12.3 |
| 1965 | 13 | 12.3 |
| 1966 | 24 | 12.3 |
| 1967 | 6 | 12.3 |
| 1968 | 13 | 12.3 |
| 1969 | 11 | 12.3 |
| 1970 | 14 | 13 |
| 1971 | 13 | 13 |
| 1972 | 15 | 13 |
| 1973 | 20 | 13 |
| 1974 | 12 | 13 |
| 1975 | 11 | 13 |
| 1976 | 9 | 13 |
| 1977 | 15 | 13 |
| 1978 | 9 | 13 |
| 1979 | 12 | 13 |
| 1980 | 21 | 16.1 |
| 1981 | 14 | 16.1 |
| 1982 | 9 | 16.1 |
| 1983 | 31 | 16.1 |
| 1984 | 10 | 16.1 |
| 1985 | 3 | 16.1 |
| 1986 | 7 | 16.1 |
| 1987 | 23 | 16.1 |
| 1988 | 30 | 16.1 |
| 1989 | 13 | 16.1 |
| 1990 | 5 | 10.6 |
| 1991 | 14 | 10.6 |
| 1993 | 14 | 10.6 |
| 1994 | 8 | 10.6 |
| 1995 | 12 | 10.6 |
| Year | First date | Last date |
|---|---|---|
| 1951 | 1951-06-05 | 1951-07-28 |
| 1952 | 1952-06-26 | 1952-07-24 |
| 1953 | 1953-06-07 | 1953-09-05 |
| 1954 | 1954-06-23 | 1954-08-01 |
| 1955 | 1955-07-03 | 1955-08-22 |
| 1956 | 1956-06-14 | 1956-08-19 |
| 1957 | 1957-06-15 | 1957-08-04 |
| 1959 | 1959-05-13 | 1959-09-25 |
| 1960 | 1960-07-13 | 1960-08-30 |
| 1961 | 1961-06-13 | 1961-09-13 |
| 1962 | 1962-04-27 | 1962-07-09 |
| 1963 | 1963-05-10 | 1963-07-30 |
| 1964 | 1964-06-11 | 1964-09-12 |
| 1965 | 1965-05-11 | 1965-09-23 |
| 1966 | 1966-06-05 | 1966-09-03 |
| 1967 | 1967-06-11 | 1967-07-26 |
| 1968 | 1968-06-07 | 1968-08-26 |
| 1969 | 1969-05-30 | 1969-09-02 |
| 1970 | 1970-05-11 | 1970-09-24 |
| 1971 | 1971-06-08 | 1971-09-10 |
| 1972 | 1972-07-03 | 1972-08-31 |
| 1973 | 1973-06-10 | 1973-09-05 |
| 1974 | 1974-04-30 | 1974-08-21 |
| 1975 | 1975-05-21 | 1975-08-06 |
| 1976 | 1976-04-18 | 1976-08-23 |
| 1977 | 1977-05-18 | 1977-09-03 |
| 1978 | 1978-07-10 | 1978-08-18 |
| 1979 | 1979-05-10 | 1979-08-06 |
| 1980 | 1980-05-24 | 1980-09-23 |
| 1981 | 1981-06-17 | 1981-08-11 |
| 1982 | 1982-07-09 | 1982-09-13 |
| 1983 | 1983-06-13 | 1983-09-21 |
| 1984 | 1984-06-08 | 1984-08-17 |
| 1985 | 1985-08-10 | 1985-08-16 |
| 1986 | 1986-05-20 | 1986-07-24 |
| 1987 | 1987-05-30 | 1987-08-20 |
| 1988 | 1988-06-14 | 1988-08-16 |
| 1989 | 1989-05-20 | 1989-09-11 |
| 1990 | 1990-04-28 | 1990-07-20 |
| 1991 | 1991-06-17 | 1991-08-31 |
| 1993 | 1993-05-12 | 1993-09-04 |
| 1994 | 1994-06-19 | 1994-07-22 |
| 1995 | 1995-06-20 | 1995-08-18 |
Every Fixed Threshold
| Threshold | Years with a qualifying day | Most days in a year | Year | Latest year days |
|---|---|---|---|---|
| 30 C (86 F): Days | 43 | 31 | 1983 | 12 |
| 35 C (95 F): Days | 6 | 2 | 1975 | 1 |
| 90 F (32.2 C): Days | 38 | 18 | 1988 | 4 |
| 0 C (32 F): Ice days (max | 44 | 63 | 1978 | 39 |
| 0 C (32 F): Frost days (min | 44 | 173 | 1995 | 173 |
| -10 C (14 F): Days with min | 44 | 72 | 1989 | 51 |
| -20 C (-4 F): Days with min | 40 | 13 | 1961 | 4 |
| -30 C (-22 F): Days with min | 3 | 2 | 1961 | 1 |
| 20 C (68 F): Tropical nights (min | 41 | 13 | 1988 | 2 |
| 10 mm (0.39 in): Days with 10 mm or more rain | 47 | 54 | 1972 | 24 |
| 25 mm (0.98 in): Days with 25 mm or more rain | 47 | 21 | 1979 | 7 |
| 50 mm (1.97 in): Days with 50 mm or more rain | 37 | 7 | 1955 | 5 |
| 100 mm (3.94 in): Days with 100 mm or more rain | 6 | 3 | 1955 | 1 |
| 200 mm (7.87 in): Days with 200 mm or more rain | 1 | 1 | 1955 | 1 |
| 10 cm (3.9 in): Days with 10 cm or more snowfall | 46 | 9 | 1967 | 3 |
| 25 cm (9.8 in): Days with 25 cm or more snowfall | 18 | 3 | 1961 | 1 |
| 50 cm (19.7 in): Days with 50 cm or more snowfall | 1 | 1 | 1983 | 1 |
Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1951.
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).