Sullivans Is Threshold Days by Year (USC00388405)
15 fixed thresholds counted per year at Sullivans Is (USC00388405): hot days, frost, tropical nights and heavy rain, with the most days in a year.
Key Facts for Sullivans Is Thresholds
- Sullivans Is: days with 10 mm (0.39 in) or more of precipitation in 49 years, most in 1971 with 52.
- Sullivans Is: days with 25 mm (0.98 in) or more of precipitation in 49 years, most in 1971 with 25.
- Sullivans Is: days with 50 mm (1.97 in) or more of precipitation in 48 years, most in 2023 with 8.
- Sullivans Is: days with a maximum temperature at or above 30 C (86 F) in 45 years, most in 2011 with 114.
- 15 fixed thresholds have at least one qualifying day at Sullivans Is.
Days at or above 30 C (86 F)
45 years with a qualifying day| Year | Days | Decade average |
|---|---|---|
| 1952 | 82 | 87.6 |
| 1953 | 70 | 87.6 |
| 1954 | 100 | 87.6 |
| 1955 | 86 | 87.6 |
| 1956 | 100 | 87.6 |
| 1957 | 88 | 87.6 |
| 1958 | 87 | 87.6 |
| 1959 | 88 | 87.6 |
| 1960 | 85 | 75.9 |
| 1961 | 78 | 75.9 |
| 1962 | 95 | 75.9 |
| 1963 | 83 | 75.9 |
| 1964 | 64 | 75.9 |
| 1965 | 90 | 75.9 |
| 1966 | 57 | 75.9 |
| 1967 | 62 | 75.9 |
| 1968 | 69 | 75.9 |
| 1971 | 94 | 84.4 |
| 1972 | 79 | 84.4 |
| 1974 | 66 | 84.4 |
| 1977 | 104 | 84.4 |
| 1978 | 79 | 84.4 |
| 1983 | 74 | 79.5 |
| 1984 | 78 | 79.5 |
| 1985 | 87 | 79.5 |
| 1986 | 80 | 79.5 |
| 1987 | 82 | 79.5 |
| 1988 | 76 | 79.5 |
| 1992 | 93 | 88.8 |
| 1993 | 99 | 88.8 |
| 1994 | 72 | 88.8 |
| 1996 | 91 | 88.8 |
| 2007 | 85 | 85 |
| 2010 | 110 | 106.1 |
| 2011 | 114 | 106.1 |
| 2012 | 102 | 106.1 |
| 2013 | 89 | 106.1 |
| 2014 | 111 | 106.1 |
| 2015 | 105 | 106.1 |
| 2016 | 114 | 106.1 |
| 2017 | 104 | 106.1 |
| 2022 | 59 | 67.3 |
| 2023 | 74 | 67.3 |
| 2024 | 71 | 67.3 |
| 2026 | 65 | 67.3 |
| Year | First date | Last date |
|---|---|---|
| 1952 | 1952-05-02 | 1952-10-02 |
| 1953 | 1953-05-11 | 1953-09-17 |
| 1954 | 1954-05-19 | 1954-10-06 |
| 1955 | 1955-04-21 | 1955-10-08 |
| 1956 | 1956-05-07 | 1956-10-07 |
| 1957 | 1957-05-19 | 1957-09-23 |
| 1958 | 1958-04-25 | 1958-10-10 |
| 1959 | 1959-04-20 | 1959-10-11 |
| 1960 | 1960-05-17 | 1960-10-03 |
| 1961 | 1961-05-21 | 1961-09-27 |
| 1962 | 1962-05-02 | 1962-10-13 |
| 1963 | 1963-04-23 | 1963-09-13 |
| 1964 | 1964-04-24 | 1964-10-01 |
| 1965 | 1965-05-03 | 1965-10-12 |
| 1966 | 1966-05-29 | 1966-10-05 |
| 1967 | 1967-04-07 | 1967-10-05 |
| 1968 | 1968-04-20 | 1968-10-07 |
| 1971 | 1971-04-17 | 1971-10-09 |
| 1972 | 1972-05-09 | 1972-10-19 |
| 1974 | 1974-03-10 | 1974-09-14 |
| 1977 | 1977-03-16 | 1977-10-02 |
| 1978 | 1978-04-07 | 1978-09-26 |
| 1983 | 1983-06-01 | 1983-10-05 |
| 1984 | 1984-05-05 | 1984-10-06 |
| 1985 | 1985-04-25 | 1985-10-04 |
| 1986 | 1986-04-27 | 1986-10-06 |
| 1987 | 1987-05-02 | 1987-09-27 |
| 1988 | 1988-04-05 | 1988-09-25 |
| 1992 | 1992-04-21 | 1992-11-03 |
| 1993 | 1993-05-17 | 1993-10-03 |
| 1994 | 1994-05-17 | 1994-10-23 |
| 1996 | 1996-05-05 | 1996-09-28 |
| 2007 | 2007-05-31 | 2007-10-17 |
| 2010 | 2010-05-09 | 2010-10-29 |
| 2011 | 2011-03-23 | 2011-10-01 |
| 2012 | 2012-03-30 | 2012-10-08 |
| 2013 | 2013-05-17 | 2013-10-17 |
| 2014 | 2014-05-06 | 2014-10-15 |
| 2015 | 2015-04-27 | 2015-10-01 |
| 2016 | 2016-04-30 | 2016-10-03 |
| 2017 | 2017-05-10 | 2017-10-17 |
| 2022 | 2022-05-06 | 2022-09-22 |
| 2023 | 2023-03-01 | 2023-09-25 |
| 2024 | 2024-05-27 | 2024-10-14 |
| 2026 | 2026-06-05 | 2026-09-20 |
Every Fixed Threshold
| Threshold | Years with a qualifying day | Most days in a year | Year | Latest year days |
|---|---|---|---|---|
| 30 C (86 F): Days | 45 | 114 | 2011 | 65 |
| 35 C (95 F): Days | 43 | 29 | 2016 | 9 |
| 40 C (104 F): Days | 1 | 1 | 1952 | 1 |
| 90 F (32.2 C): Days | 45 | 80 | 2016 | 38 |
| 100 F (37.8 C): Days | 12 | 4 | 2010 | 1 |
| 0 C (32 F): Ice days (max | 4 | 1 | 1985 | 1 |
| 0 C (32 F): Frost days (min | 41 | 43 | 1977 | 10 |
| -10 C (14 F): Days with min | 6 | 2 | 1994 | 2 |
| 20 C (68 F): Tropical nights (min | 42 | 155 | 2024 | 116 |
| 25 C (77 F): Days with min | 42 | 49 | 2024 | 51 |
| 10 mm (0.39 in): Days with 10 mm or more rain | 49 | 52 | 1971 | 16 |
| 25 mm (0.98 in): Days with 25 mm or more rain | 49 | 25 | 1971 | 5 |
| 50 mm (1.97 in): Days with 50 mm or more rain | 48 | 8 | 2023 | 1 |
| 100 mm (3.94 in): Days with 100 mm or more rain | 16 | 2 | 1994 | 1 |
| 200 mm (7.87 in): Days with 200 mm or more rain | 1 | 0 | n/a | 1 |
Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1952.
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).