Kailua 446 Threshold Days by Year
9 fixed thresholds counted per year at Kailua 446 (USC00512679): hot days, frost, tropical nights and heavy rain, with the most days in a year.
Key Facts for Kailua 446 Thresholds
- Kailua 446: nights with a minimum temperature at or above 20 C (68 F) in 77 years, most in 1940 with 142.
- Kailua 446: days with 10 mm (0.39 in) or more of precipitation in 72 years, most in 1914 with 163.
- Kailua 446: days with 25 mm (0.98 in) or more of precipitation in 72 years, most in 1914 with 67.
- Kailua 446: days with 50 mm (1.97 in) or more of precipitation in 72 years, most in 1914 with 27.
- 9 fixed thresholds have at least one qualifying day at Kailua 446.
Days at or above 30 C (86 F)
22 years with a qualifying day| Year | Days | Decade average |
|---|---|---|
| 1906 | 1 | 1 |
| 1909 | 1 | 1 |
| 1914 | 1 | 1 |
| 1916 | 1 | 1 |
| 1918 | 1 | 1 |
| 1923 | 2 | 2.6 |
| 1926 | 4 | 2.6 |
| 1927 | 2 | 2.6 |
| 1928 | 4 | 2.6 |
| 1929 | 1 | 2.6 |
| 1930 | 1 | 1 |
| 1935 | 1 | 1 |
| 1942 | 1 | 1 |
| 1946 | 1 | 1 |
| 1947 | 1 | 1 |
| 1950 | 1 | 1.7 |
| 1954 | 3 | 1.7 |
| 1958 | 1 | 1.7 |
| 1968 | 3 | 3 |
| 1970 | 1 | 1 |
| 1972 | 1 | 1 |
| 1982 | 1 | 1 |
| Year | First date | Last date |
|---|---|---|
| 1906 | 1906-06-14 | 1906-06-14 |
| 1909 | 1909-02-12 | 1909-02-12 |
| 1914 | 1914-02-19 | 1914-02-19 |
| 1916 | 1916-07-28 | 1916-07-28 |
| 1918 | 1918-09-26 | 1918-09-26 |
| 1923 | 1923-08-28 | 1923-09-03 |
| 1926 | 1926-06-08 | 1926-10-13 |
| 1927 | 1927-04-04 | 1927-06-12 |
| 1928 | 1928-10-01 | 1928-11-19 |
| 1929 | 1929-10-08 | 1929-10-08 |
| 1930 | 1930-09-24 | 1930-09-24 |
| 1935 | 1935-07-05 | 1935-07-05 |
| 1942 | 1942-09-30 | 1942-09-30 |
| 1946 | 1946-10-10 | 1946-10-10 |
| 1947 | 1947-08-30 | 1947-08-30 |
| 1950 | 1950-08-16 | 1950-08-16 |
| 1954 | 1954-09-30 | 1954-10-03 |
| 1958 | 1958-02-24 | 1958-02-24 |
| 1968 | 1968-02-20 | 1968-10-13 |
| 1970 | 1970-08-31 | 1970-08-31 |
| 1972 | 1972-03-08 | 1972-03-08 |
| 1982 | 1982-06-25 | 1982-06-25 |
Every Fixed Threshold
| Threshold | Years with a qualifying day | Most days in a year | Year | Latest year days |
|---|---|---|---|---|
| 30 C (86 F): Days | 22 | 4 | 1926 | 1 |
| 90 F (32.2 C): Days | 3 | 1 | 1916 | 1 |
| 20 C (68 F): Tropical nights (min | 77 | 142 | 1940 | 1 |
| 25 C (77 F): Days with min | 2 | 1 | 1972 | 1 |
| 10 mm (0.39 in): Days with 10 mm or more rain | 72 | 163 | 1914 | 90 |
| 25 mm (0.98 in): Days with 25 mm or more rain | 72 | 67 | 1914 | 30 |
| 50 mm (1.97 in): Days with 50 mm or more rain | 72 | 27 | 1914 | 9 |
| 100 mm (3.94 in): Days with 100 mm or more rain | 58 | 8 | 1918 | 2 |
| 200 mm (7.87 in): Days with 200 mm or more rain | 12 | 2 | 1918 | 1 |
Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1906.
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 2026-10-15 (15 October 2026). Threshold counts are computed by this site.
Data as of . Last revised (2025-12-31).