Greers Ferry Dam Threshold Days by Year (USC00032978)
18 fixed thresholds counted per year at Greers Ferry Dam (USC00032978): hot days, frost, tropical nights and heavy rain, with the most days in a year.
Key Facts for Greers Ferry Dam Thresholds
- Greers Ferry Dam: days with a maximum temperature at or above 30 C (86 F) in 63 years, most in 1980 with 118.
- Greers Ferry Dam: days with a maximum temperature at or above 90 F (32.2 C) in 63 years, most in 1980 with 98.
- Greers Ferry Dam: nights with a minimum temperature at or below 0 C (32 F) in 63 years, most in 1969 with 114.
- Greers Ferry Dam: nights with a minimum temperature at or above 20 C (68 F) in 63 years, most in 1998 with 95.
- 18 fixed thresholds have at least one qualifying day at Greers Ferry Dam.
Days at or above 30 C (86 F)
63 years with a qualifying day| Year | Days | Decade average |
|---|---|---|
| 1963 | 117 | 89 |
| 1964 | 94 | 89 |
| 1965 | 88 | 89 |
| 1966 | 65 | 89 |
| 1967 | 72 | 89 |
| 1968 | 84 | 89 |
| 1969 | 103 | 89 |
| 1970 | 69 | 88.9 |
| 1971 | 90 | 88.9 |
| 1972 | 101 | 88.9 |
| 1973 | 92 | 88.9 |
| 1974 | 73 | 88.9 |
| 1975 | 86 | 88.9 |
| 1976 | 81 | 88.9 |
| 1977 | 114 | 88.9 |
| 1978 | 104 | 88.9 |
| 1979 | 79 | 88.9 |
| 1980 | 118 | 100.4 |
| 1981 | 102 | 100.4 |
| 1982 | 92 | 100.4 |
| 1983 | 103 | 100.4 |
| 1984 | 98 | 100.4 |
| 1985 | 88 | 100.4 |
| 1986 | 103 | 100.4 |
| 1987 | 114 | 100.4 |
| 1988 | 105 | 100.4 |
| 1989 | 81 | 100.4 |
| 1990 | 93 | 89.3 |
| 1991 | 104 | 89.3 |
| 1992 | 78 | 89.3 |
| 1993 | 88 | 89.3 |
| 1994 | 66 | 89.3 |
| 1995 | 82 | 89.3 |
| 1996 | 85 | 89.3 |
| 1997 | 83 | 89.3 |
| 1998 | 116 | 89.3 |
| 1999 | 98 | 89.3 |
| 2000 | 97 | 83 |
| 2001 | 96 | 83 |
| 2002 | 89 | 83 |
| 2003 | 68 | 83 |
| 2004 | 63 | 83 |
| 2005 | 114 | 83 |
| 2006 | 99 | 83 |
| 2007 | 75 | 83 |
| 2008 | 69 | 83 |
| 2009 | 60 | 83 |
| 2010 | 110 | 96.1 |
| 2011 | 103 | 96.1 |
| 2012 | 111 | 96.1 |
| 2013 | 79 | 96.1 |
| 2014 | 70 | 96.1 |
| 2015 | 86 | 96.1 |
| 2016 | 87 | 96.1 |
| 2018 | 118 | 96.1 |
| 2019 | 101 | 96.1 |
| 2020 | 79 | 91.4 |
| 2021 | 86 | 91.4 |
| 2022 | 85 | 91.4 |
| 2023 | 107 | 91.4 |
| 2024 | 99 | 91.4 |
| 2025 | 74 | 91.4 |
| 2026 | 110 | 91.4 |
| Year | First date | Last date |
|---|---|---|
| 1963 | 1963-05-09 | 1963-10-28 |
| 1964 | 1964-05-18 | 1964-11-16 |
| 1965 | 1965-04-22 | 1965-09-21 |
| 1966 | 1966-04-01 | 1966-09-30 |
| 1967 | 1967-03-12 | 1967-10-06 |
| 1968 | 1968-05-15 | 1968-10-16 |
| 1969 | 1969-05-23 | 1969-10-21 |
| 1970 | 1970-05-20 | 1970-10-03 |
| 1971 | 1971-04-28 | 1971-10-03 |
| 1972 | 1972-04-13 | 1972-09-29 |
| 1973 | 1973-05-11 | 1973-10-10 |
| 1974 | 1974-04-01 | 1974-09-13 |
| 1975 | 1975-05-20 | 1975-10-14 |
| 1976 | 1976-05-23 | 1976-10-05 |
| 1977 | 1977-05-08 | 1977-10-02 |
| 1978 | 1978-04-07 | 1978-10-22 |
| 1979 | 1979-05-09 | 1979-10-22 |
| 1980 | 1980-04-22 | 1980-10-11 |
| 1981 | 1981-04-01 | 1981-10-06 |
| 1982 | 1982-03-18 | 1982-10-06 |
| 1983 | 1983-05-29 | 1983-10-08 |
| 1984 | 1984-05-13 | 1984-09-22 |
| 1985 | 1985-05-07 | 1985-09-23 |
| 1986 | 1986-05-09 | 1986-10-04 |
| 1987 | 1987-04-20 | 1987-09-26 |
| 1988 | 1988-04-22 | 1988-09-24 |
| 1989 | 1989-04-23 | 1989-10-14 |
| 1990 | 1990-04-24 | 1990-09-30 |
| 1991 | 1991-05-13 | 1991-10-19 |
| 1992 | 1992-04-15 | 1992-10-14 |
| 1993 | 1993-05-07 | 1993-09-24 |
| 1994 | 1994-06-02 | 1994-10-04 |
| 1995 | 1995-05-14 | 1995-10-01 |
| 1996 | 1996-04-20 | 1996-09-24 |
| 1997 | 1997-05-19 | 1997-10-07 |
| 1998 | 1998-05-13 | 1998-10-01 |
| 1999 | 1999-05-10 | 1999-10-14 |
| 2000 | 2000-05-12 | 2000-10-06 |
| 2001 | 2001-04-10 | 2001-09-24 |
| 2002 | 2002-04-19 | 2002-10-06 |
| 2003 | 2003-04-14 | 2003-10-24 |
| 2004 | 2004-05-22 | 2004-11-09 |
| 2005 | 2005-05-12 | 2005-10-19 |
| 2006 | 2006-04-16 | 2006-10-05 |
| 2007 | 2007-05-06 | 2007-09-22 |
| 2008 | 2008-05-20 | 2008-09-12 |
| 2009 | 2009-04-24 | 2009-09-28 |
| 2010 | 2010-05-06 | 2010-10-18 |
| 2011 | 2011-04-09 | 2011-10-17 |
| 2012 | 2012-03-31 | 2012-09-26 |
| 2013 | 2013-04-17 | 2013-10-05 |
| 2014 | 2014-05-05 | 2014-10-03 |
| 2015 | 2015-06-07 | 2015-10-16 |
| 2016 | 2016-06-09 | 2016-10-20 |
| 2018 | 2018-05-08 | 2018-10-09 |
| 2019 | 2019-05-15 | 2019-10-04 |
| 2020 | 2020-04-10 | 2020-09-13 |
| 2021 | 2021-05-28 | 2021-09-29 |
| 2022 | 2022-05-10 | 2022-09-25 |
| 2023 | 2023-05-10 | 2023-10-03 |
| 2024 | 2024-05-08 | 2024-10-26 |
| 2025 | 2025-04-14 | 2025-10-03 |
| 2026 | 2026-03-21 | 2026-10-14 |
Every Fixed Threshold
| Threshold | Years with a qualifying day | Most days in a year | Year | Latest year days |
|---|---|---|---|---|
| 30 C (86 F): Days | 63 | 118 | 1980 | 110 |
| 35 C (95 F): Days | 62 | 77 | 1980 | 43 |
| 40 C (104 F): Days | 11 | 18 | 1980 | 5 |
| 90 F (32.2 C): Days | 63 | 98 | 1980 | 83 |
| 100 F (37.8 C): Days | 41 | 42 | 1980 | 8 |
| 110 F (43.3 C): Days | 1 | 2 | 1980 | 2 |
| 0 C (32 F): Ice days (max | 61 | 17 | 1963 | 3 |
| 0 C (32 F): Frost days (min | 63 | 114 | 1969 | 38 |
| -10 C (14 F): Days with min | 59 | 27 | 1963 | 3 |
| -20 C (-4 F): Days with min | 5 | 2 | 1985 | 1 |
| 20 C (68 F): Tropical nights (min | 63 | 95 | 1998 | 99 |
| 25 C (77 F): Days with min | 25 | 8 | 2022 | 7 |
| 10 mm (0.39 in): Days with 10 mm or more rain | 58 | 54 | 2009 | 22 |
| 25 mm (0.98 in): Days with 25 mm or more rain | 58 | 25 | 1973 | 7 |
| 50 mm (1.97 in): Days with 50 mm or more rain | 57 | 11 | 2018 | 1 |
| 100 mm (3.94 in): Days with 100 mm or more rain | 15 | 4 | 2015 | 1 |
| 10 cm (3.9 in): Days with 10 cm or more snowfall | 11 | 2 | 2010 | 1 |
| 25 cm (9.8 in): Days with 25 cm or more snowfall | 1 | 1 | 1979 | 1 |
Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1963.
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 (2026-10-17).