Waialua 847 Threshold Days by Year
10 fixed thresholds counted per year at Waialua 847 (USC00519195): hot days, frost, tropical nights and heavy rain, with the most days in a year.
Key Facts for Waialua 847 Thresholds
- Waialua 847: days with a maximum temperature at or above 30 C (86 F) in 53 years, most in 1986 with 196.
- Waialua 847: nights with a minimum temperature at or above 20 C (68 F) in 51 years, most in 1955 with 153.
- Waialua 847: days with 10 mm (0.39 in) or more of precipitation in 50 years, most in 1917 with 33.
- Waialua 847: days with 25 mm (0.98 in) or more of precipitation in 50 years, most in 1971 with 17.
- 10 fixed thresholds have at least one qualifying day at Waialua 847.
Days at or above 30 C (86 F)
53 years with a qualifying day| Year | Days | Decade average |
|---|---|---|
| 1908 | 80 | 74 |
| 1909 | 68 | 74 |
| 1910 | 66 | 102.3 |
| 1911 | 60 | 102.3 |
| 1912 | 115 | 102.3 |
| 1913 | 118 | 102.3 |
| 1914 | 102 | 102.3 |
| 1915 | 136 | 102.3 |
| 1916 | 106 | 102.3 |
| 1917 | 82 | 102.3 |
| 1918 | 123 | 102.3 |
| 1919 | 115 | 102.3 |
| 1920 | 111 | 102.4 |
| 1921 | 116 | 102.4 |
| 1922 | 78 | 102.4 |
| 1923 | 108 | 102.4 |
| 1925 | 22 | 102.4 |
| 1926 | 131 | 102.4 |
| 1927 | 151 | 102.4 |
| 1950 | 28 | 29.7 |
| 1951 | 55 | 29.7 |
| 1952 | 14 | 29.7 |
| 1953 | 24 | 29.7 |
| 1954 | 28 | 29.7 |
| 1955 | 8 | 29.7 |
| 1956 | 26 | 29.7 |
| 1957 | 40 | 29.7 |
| 1958 | 24 | 29.7 |
| 1959 | 50 | 29.7 |
| 1960 | 56 | 89.9 |
| 1961 | 83 | 89.9 |
| 1962 | 64 | 89.9 |
| 1963 | 81 | 89.9 |
| 1964 | 67 | 89.9 |
| 1965 | 81 | 89.9 |
| 1966 | 111 | 89.9 |
| 1967 | 113 | 89.9 |
| 1968 | 165 | 89.9 |
| 1969 | 78 | 89.9 |
| 1970 | 105 | 82.3 |
| 1971 | 78 | 82.3 |
| 1972 | 96 | 82.3 |
| 1973 | 80 | 82.3 |
| 1974 | 113 | 82.3 |
| 1975 | 48 | 82.3 |
| 1976 | 38 | 82.3 |
| 1977 | 89 | 82.3 |
| 1978 | 62 | 82.3 |
| 1979 | 114 | 82.3 |
| 1980 | 112 | 144.8 |
| 1981 | 152 | 144.8 |
| 1982 | 119 | 144.8 |
| 1986 | 196 | 144.8 |
| Year | First date | Last date |
|---|---|---|
| 1908 | 1908-02-25 | 1908-10-28 |
| 1909 | 1909-04-24 | 1909-11-27 |
| 1910 | 1910-03-08 | 1910-11-11 |
| 1911 | 1911-04-10 | 1911-10-16 |
| 1912 | 1912-05-22 | 1912-10-17 |
| 1913 | 1913-03-17 | 1913-10-27 |
| 1914 | 1914-04-15 | 1914-11-03 |
| 1915 | 1915-03-01 | 1915-12-08 |
| 1916 | 1916-03-06 | 1916-12-05 |
| 1917 | 1917-03-11 | 1917-10-16 |
| 1918 | 1918-04-11 | 1918-10-21 |
| 1919 | 1919-04-05 | 1919-10-04 |
| 1920 | 1920-01-03 | 1920-10-21 |
| 1921 | 1921-05-20 | 1921-10-21 |
| 1922 | 1922-05-01 | 1922-10-09 |
| 1923 | 1923-04-24 | 1923-10-20 |
| 1925 | 1925-04-22 | 1925-08-28 |
| 1926 | 1926-01-14 | 1926-12-12 |
| 1927 | 1927-05-03 | 1927-11-04 |
| 1950 | 1950-05-31 | 1950-11-17 |
| 1951 | 1951-05-03 | 1951-11-03 |
| 1952 | 1952-08-03 | 1952-11-06 |
| 1953 | 1953-01-31 | 1953-12-18 |
| 1954 | 1954-04-09 | 1954-11-23 |
| 1955 | 1955-07-06 | 1955-10-25 |
| 1956 | 1956-07-04 | 1956-12-11 |
| 1957 | 1957-05-16 | 1957-12-04 |
| 1958 | 1958-06-13 | 1958-11-14 |
| 1959 | 1959-01-29 | 1959-11-23 |
| 1960 | 1960-02-07 | 1960-10-18 |
| 1961 | 1961-02-23 | 1961-11-02 |
| 1962 | 1962-04-08 | 1962-10-22 |
| 1963 | 1963-02-18 | 1963-11-20 |
| 1964 | 1964-06-06 | 1964-10-16 |
| 1965 | 1965-04-02 | 1965-10-21 |
| 1966 | 1966-03-27 | 1966-12-04 |
| 1967 | 1967-04-25 | 1967-10-30 |
| 1968 | 1968-01-21 | 1968-12-24 |
| 1969 | 1969-05-23 | 1969-12-07 |
| 1970 | 1970-04-09 | 1970-11-12 |
| 1971 | 1971-05-14 | 1971-11-06 |
| 1972 | 1972-06-02 | 1972-11-26 |
| 1973 | 1973-05-26 | 1973-12-14 |
| 1974 | 1974-01-18 | 1974-11-03 |
| 1975 | 1975-06-21 | 1975-11-03 |
| 1976 | 1976-06-13 | 1976-12-14 |
| 1977 | 1977-01-07 | 1977-12-11 |
| 1978 | 1978-05-03 | 1978-12-03 |
| 1979 | 1979-03-27 | 1979-12-14 |
| 1980 | 1980-01-15 | 1980-12-23 |
| 1981 | 1981-01-03 | 1981-12-31 |
| 1982 | 1982-02-18 | 1982-12-03 |
| 1986 | 1986-01-06 | 1986-12-25 |
Every Fixed Threshold
| Threshold | Years with a qualifying day | Most days in a year | Year | Latest year days |
|---|---|---|---|---|
| 30 C (86 F): Days | 53 | 196 | 1986 | 196 |
| 35 C (95 F): Days | 4 | 1 | 1912 | 1 |
| 90 F (32.2 C): Days | 45 | 87 | 1927 | 71 |
| 20 C (68 F): Tropical nights (min | 51 | 153 | 1955 | 130 |
| 25 C (77 F): Days with min | 3 | 9 | 1916 | 1 |
| 10 mm (0.39 in): Days with 10 mm or more rain | 50 | 33 | 1917 | 14 |
| 25 mm (0.98 in): Days with 25 mm or more rain | 50 | 17 | 1971 | 7 |
| 50 mm (1.97 in): Days with 50 mm or more rain | 45 | 7 | 1955 | 3 |
| 100 mm (3.94 in): Days with 100 mm or more rain | 26 | 4 | 1923 | 2 |
| 200 mm (7.87 in): Days with 200 mm or more rain | 1 | 1 | 1976 | 1 |
Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1908.
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 2026-10-16 (16 October 2026). Threshold counts are computed by this site.
Data as of . Last revised (2025-12-31).