Ripley Threshold Days by Year (USC00407710)
17 fixed thresholds counted per year at Ripley (USC00407710): hot days, frost, tropical nights and heavy rain, with the most days in a year.
Key Facts for Ripley Thresholds
- Ripley: days with 10 mm (0.39 in) or more of precipitation in 42 years, most in 1984 with 56.
- Ripley: days with 25 mm (0.98 in) or more of precipitation in 42 years, most in 1996 with 24.
- Ripley: days with 50 mm (1.97 in) or more of precipitation in 42 years, most in 1983 with 11.
- Ripley: days with a maximum temperature at or above 30 C (86 F) in 40 years, most in 1977 with 123.
- 17 fixed thresholds have at least one qualifying day at Ripley.
Days at or above 30 C (86 F)
40 years with a qualifying day| Year | Days | Decade average |
|---|---|---|
| 1963 | 105 | 86.9 |
| 1964 | 93 | 86.9 |
| 1965 | 99 | 86.9 |
| 1966 | 74 | 86.9 |
| 1967 | 62 | 86.9 |
| 1968 | 88 | 86.9 |
| 1969 | 87 | 86.9 |
| 1970 | 92 | 89.8 |
| 1971 | 85 | 89.8 |
| 1972 | 86 | 89.8 |
| 1973 | 101 | 89.8 |
| 1974 | 69 | 89.8 |
| 1975 | 88 | 89.8 |
| 1976 | 72 | 89.8 |
| 1977 | 123 | 89.8 |
| 1978 | 107 | 89.8 |
| 1979 | 75 | 89.8 |
| 1980 | 115 | 102.4 |
| 1981 | 82 | 102.4 |
| 1982 | 107 | 102.4 |
| 1983 | 109 | 102.4 |
| 1984 | 100 | 102.4 |
| 1985 | 103 | 102.4 |
| 1986 | 123 | 102.4 |
| 1987 | 112 | 102.4 |
| 1989 | 71 | 102.4 |
| 1990 | 87 | 76.6 |
| 1991 | 78 | 76.6 |
| 1992 | 51 | 76.6 |
| 1993 | 90 | 76.6 |
| 1996 | 77 | 76.6 |
| 2000 | 75 | 71.6 |
| 2001 | 75 | 71.6 |
| 2002 | 90 | 71.6 |
| 2004 | 55 | 71.6 |
| 2009 | 63 | 71.6 |
| 2013 | 60 | 75.8 |
| 2014 | 65 | 75.8 |
| 2015 | 82 | 75.8 |
| 2016 | 96 | 75.8 |
| Year | First date | Last date |
|---|---|---|
| 1963 | 1963-04-22 | 1963-10-28 |
| 1964 | 1964-05-18 | 1964-10-03 |
| 1965 | 1965-04-23 | 1965-10-18 |
| 1966 | 1966-05-09 | 1966-09-26 |
| 1967 | 1967-04-06 | 1967-10-07 |
| 1968 | 1968-05-03 | 1968-09-24 |
| 1969 | 1969-05-15 | 1969-10-05 |
| 1970 | 1970-05-01 | 1970-09-24 |
| 1971 | 1971-04-20 | 1971-10-04 |
| 1972 | 1972-06-03 | 1972-09-22 |
| 1973 | 1973-05-11 | 1973-10-05 |
| 1974 | 1974-05-14 | 1974-09-13 |
| 1975 | 1975-05-20 | 1975-10-15 |
| 1976 | 1976-04-24 | 1976-10-05 |
| 1977 | 1977-04-14 | 1977-09-19 |
| 1978 | 1978-04-08 | 1978-09-22 |
| 1979 | 1979-05-10 | 1979-10-02 |
| 1980 | 1980-04-23 | 1980-10-11 |
| 1981 | 1981-04-29 | 1981-10-06 |
| 1982 | 1982-05-06 | 1982-10-07 |
| 1983 | 1983-06-05 | 1983-10-18 |
| 1984 | 1984-04-26 | 1984-09-26 |
| 1985 | 1985-04-19 | 1985-10-23 |
| 1986 | 1986-03-30 | 1986-10-05 |
| 1987 | 1987-04-20 | 1987-09-27 |
| 1989 | 1989-04-23 | 1989-10-13 |
| 1990 | 1990-04-25 | 1990-09-30 |
| 1991 | 1991-05-14 | 1991-09-16 |
| 1992 | 1992-05-04 | 1992-09-20 |
| 1993 | 1993-05-06 | 1993-09-23 |
| 1996 | 1996-05-16 | 1996-09-11 |
| 2000 | 2000-05-13 | 2000-10-05 |
| 2001 | 2001-04-11 | 2001-09-23 |
| 2002 | 2002-04-18 | 2002-10-03 |
| 2004 | 2004-06-02 | 2004-09-23 |
| 2009 | 2009-05-16 | 2009-09-11 |
| 2013 | 2013-05-20 | 2013-09-21 |
| 2014 | 2014-05-05 | 2014-10-02 |
| 2015 | 2015-06-06 | 2015-10-17 |
| 2016 | 2016-05-12 | 2016-11-01 |
Every Fixed Threshold
| Threshold | Years with a qualifying day | Most days in a year | Year | Latest year days |
|---|---|---|---|---|
| 30 C (86 F): Days | 40 | 123 | 1977 | 96 |
| 35 C (95 F): Days | 38 | 59 | 1980 | 3 |
| 40 C (104 F): Days | 1 | 3 | 1980 | 3 |
| 90 F (32.2 C): Days | 40 | 97 | 1980 | 50 |
| 100 F (37.8 C): Days | 8 | 24 | 1980 | 3 |
| 0 C (32 F): Ice days (max | 40 | 24 | 1963 | 7 |
| 0 C (32 F): Frost days (min | 33 | 97 | 1969 | 65 |
| -10 C (14 F): Days with min | 31 | 31 | 1963 | 5 |
| -20 C (-4 F): Days with min | 2 | 3 | 1989 | 3 |
| 20 C (68 F): Tropical nights (min | 33 | 93 | 2016 | 93 |
| 25 C (77 F): Days with min | 15 | 14 | 1980 | 3 |
| 10 mm (0.39 in): Days with 10 mm or more rain | 42 | 56 | 1984 | 41 |
| 25 mm (0.98 in): Days with 25 mm or more rain | 42 | 24 | 1996 | 17 |
| 50 mm (1.97 in): Days with 50 mm or more rain | 42 | 11 | 1983 | 6 |
| 100 mm (3.94 in): Days with 100 mm or more rain | 15 | 2 | 1973 | 2 |
| 10 cm (3.9 in): Days with 10 cm or more snowfall | 10 | 2 | 1982 | 2 |
| 25 cm (9.8 in): Days with 25 cm or more snowfall | 3 | 1 | 1968 | 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 (2025-12-31).