Green Mt Dam Threshold Days by Year (USC00053592)
15 fixed thresholds counted per year at Green Mt Dam (USC00053592): hot days, frost, tropical nights and heavy rain, with the most days in a year.
Key Facts for Green Mt Dam Thresholds
- Green Mt Dam: days with a maximum temperature at or below 0 C (32 F) in 65 years, most in 2006 with 97.
- Green Mt Dam: days with 10 mm (0.39 in) or more of precipitation in 59 years, most in 1951 with 15.
- Green Mt Dam: nights with a minimum temperature at or below 0 C (32 F) in 57 years, most in 2006 with 255.
- Green Mt Dam: nights with a minimum temperature at or below -10 C (14 F) in 57 years, most in 1984 with 126.
- 15 fixed thresholds have at least one qualifying day at Green Mt Dam.
Days at or above 30 C (86 F)
56 years with a qualifying day| Year | Days | Decade average |
|---|---|---|
| 1940 | 7 | 7.9 |
| 1941 | 2 | 7.9 |
| 1942 | 1 | 7.9 |
| 1944 | 7 | 7.9 |
| 1945 | 7 | 7.9 |
| 1946 | 20 | 7.9 |
| 1947 | 11 | 7.9 |
| 1951 | 4 | 9.1 |
| 1952 | 4 | 9.1 |
| 1953 | 4 | 9.1 |
| 1954 | 28 | 9.1 |
| 1955 | 1 | 9.1 |
| 1956 | 9 | 9.1 |
| 1957 | 6 | 9.1 |
| 1958 | 16 | 9.1 |
| 1959 | 10 | 9.1 |
| 1960 | 23 | 12 |
| 1961 | 6 | 12 |
| 1962 | 10 | 12 |
| 1963 | 17 | 12 |
| 1964 | 18 | 12 |
| 1966 | 7 | 12 |
| 1967 | 2 | 12 |
| 1969 | 13 | 12 |
| 1970 | 2 | 3.6 |
| 1971 | 6 | 3.6 |
| 1972 | 3 | 3.6 |
| 1973 | 1 | 3.6 |
| 1974 | 2 | 3.6 |
| 1975 | 2 | 3.6 |
| 1976 | 4 | 3.6 |
| 1977 | 2 | 3.6 |
| 1978 | 8 | 3.6 |
| 1979 | 6 | 3.6 |
| 1980 | 14 | 4.5 |
| 1981 | 1 | 4.5 |
| 1982 | 5 | 4.5 |
| 1983 | 2 | 4.5 |
| 1985 | 3 | 4.5 |
| 1987 | 4 | 4.5 |
| 1988 | 2 | 4.5 |
| 1989 | 5 | 4.5 |
| 1990 | 4 | 3.7 |
| 1991 | 6 | 3.7 |
| 1992 | 1 | 3.7 |
| 1994 | 6 | 3.7 |
| 1996 | 5 | 3.7 |
| 1997 | 1 | 3.7 |
| 1999 | 3 | 3.7 |
| 2000 | 3 | 10.6 |
| 2001 | 3 | 10.6 |
| 2002 | 22 | 10.6 |
| 2003 | 15 | 10.6 |
| 2004 | 2 | 10.6 |
| 2005 | 12 | 10.6 |
| 2008 | 17 | 10.6 |
| Year | First date | Last date |
|---|---|---|
| 1940 | 1940-06-18 | 1940-08-14 |
| 1941 | 1941-07-23 | 1941-07-28 |
| 1942 | 1942-07-13 | 1942-07-13 |
| 1944 | 1944-08-10 | 1944-08-16 |
| 1945 | 1945-07-28 | 1945-09-07 |
| 1946 | 1946-07-10 | 1946-09-07 |
| 1947 | 1947-06-08 | 1947-09-05 |
| 1951 | 1951-06-27 | 1951-08-06 |
| 1952 | 1952-06-09 | 1952-09-06 |
| 1953 | 1953-05-31 | 1953-08-08 |
| 1954 | 1954-06-18 | 1954-09-02 |
| 1955 | 1955-07-10 | 1955-07-10 |
| 1956 | 1956-06-12 | 1956-09-20 |
| 1957 | 1957-07-03 | 1957-08-04 |
| 1958 | 1958-07-09 | 1958-09-12 |
| 1959 | 1959-06-08 | 1959-08-18 |
| 1960 | 1960-06-28 | 1960-09-05 |
| 1961 | 1961-06-28 | 1961-08-29 |
| 1962 | 1962-07-06 | 1962-08-16 |
| 1963 | 1963-06-27 | 1963-08-01 |
| 1964 | 1964-05-20 | 1964-08-08 |
| 1966 | 1966-07-06 | 1966-07-31 |
| 1967 | 1967-07-30 | 1967-07-31 |
| 1969 | 1969-07-04 | 1969-08-26 |
| 1970 | 1970-06-27 | 1970-08-02 |
| 1971 | 1971-06-25 | 1971-07-17 |
| 1972 | 1972-08-12 | 1972-08-14 |
| 1973 | 1973-07-06 | 1973-07-06 |
| 1974 | 1974-06-15 | 1974-06-28 |
| 1975 | 1975-07-01 | 1975-07-02 |
| 1976 | 1976-07-09 | 1976-07-12 |
| 1977 | 1977-07-17 | 1977-07-18 |
| 1978 | 1978-07-14 | 1978-09-07 |
| 1979 | 1979-07-13 | 1979-08-07 |
| 1980 | 1980-06-11 | 1980-08-11 |
| 1981 | 1981-08-05 | 1981-08-05 |
| 1982 | 1982-07-20 | 1982-08-01 |
| 1983 | 1983-08-08 | 1983-08-09 |
| 1985 | 1985-06-08 | 1985-08-26 |
| 1987 | 1987-07-22 | 1987-07-25 |
| 1988 | 1988-07-13 | 1988-08-14 |
| 1989 | 1989-07-04 | 1989-07-08 |
| 1990 | 1990-06-28 | 1990-07-01 |
| 1991 | 1991-06-24 | 1991-07-28 |
| 1992 | 1992-08-10 | 1992-08-10 |
| 1994 | 1994-06-26 | 1994-08-17 |
| 1996 | 1996-07-22 | 1996-08-15 |
| 1997 | 1997-07-16 | 1997-07-16 |
| 1999 | 1999-07-02 | 1999-07-05 |
| 2000 | 2000-07-14 | 2000-08-08 |
| 2001 | 2001-07-04 | 2001-08-05 |
| 2002 | 2002-06-25 | 2002-08-16 |
| 2003 | 2003-07-08 | 2003-08-14 |
| 2004 | 2004-06-15 | 2004-07-15 |
| 2005 | 2005-07-13 | 2005-08-01 |
| 2008 | 2008-07-01 | 2008-08-06 |
Every Fixed Threshold
| Threshold | Years with a qualifying day | Most days in a year | Year | Latest year days |
|---|---|---|---|---|
| 30 C (86 F): Days | 56 | 28 | 1954 | 17 |
| 35 C (95 F): Days | 2 | 3 | 1954 | 3 |
| 90 F (32.2 C): Days | 18 | 11 | 1954 | 5 |
| 0 C (32 F): Ice days (max | 65 | 97 | 2006 | 76 |
| 0 C (32 F): Frost days (min | 57 | 255 | 2006 | 198 |
| -10 C (14 F): Days with min | 57 | 126 | 1984 | 100 |
| -20 C (-4 F): Days with min | 57 | 48 | 1942 | 26 |
| -30 C (-22 F): Days with min | 37 | 9 | 1942 | 1 |
| -40 C (-40 F): Days with min | 6 | 3 | 1989 | 3 |
| 10 mm (0.39 in): Days with 10 mm or more rain | 59 | 15 | 1951 | 6 |
| 25 mm (0.98 in): Days with 25 mm or more rain | 24 | 3 | 1963 | 1 |
| 50 mm (1.97 in): Days with 50 mm or more rain | 1 | 1 | 2000 | 1 |
| 10 cm (3.9 in): Days with 10 cm or more snowfall | 43 | 13 | 1945 | 5 |
| 25 cm (9.8 in): Days with 25 cm or more snowfall | 16 | 2 | 1951 | 1 |
| 50 cm (19.7 in): Days with 50 cm or more snowfall | 3 | 1 | 1951 | 1 |
Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1940.
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).