Manoa Lyon Arbo 785.2 Threshold Days by Year (USC00516128)
9 fixed thresholds counted per year at Manoa Lyon Arbo 785.2 (USC00516128): hot days, frost, tropical nights and heavy rain, with the most days in a year.
Key Facts for Manoa Lyon Arbo 785.2 Thresholds
- Manoa Lyon Arbo 785.2: nights with a minimum temperature at or above 20 C (68 F) in 49 years, most in 1988 with 234.
- Manoa Lyon Arbo 785.2: days with a maximum temperature at or above 30 C (86 F) in 46 years, most in 1986 with 56.
- Manoa Lyon Arbo 785.2: days with 10 mm (0.39 in) or more of precipitation in 46 years, most in 2018 with 146.
- Manoa Lyon Arbo 785.2: days with 25 mm (0.98 in) or more of precipitation in 46 years, most in 2018 with 78.
- 9 fixed thresholds have at least one qualifying day at Manoa Lyon Arbo 785.2.
Days at or above 30 C (86 F)
46 years with a qualifying day| Year | Days | Decade average |
|---|---|---|
| 1976 | 7 | 7.8 |
| 1977 | 11 | 7.8 |
| 1978 | 9 | 7.8 |
| 1979 | 4 | 7.8 |
| 1980 | 19 | 30 |
| 1981 | 33 | 30 |
| 1982 | 19 | 30 |
| 1983 | 11 | 30 |
| 1984 | 36 | 30 |
| 1985 | 17 | 30 |
| 1986 | 56 | 30 |
| 1987 | 42 | 30 |
| 1988 | 41 | 30 |
| 1989 | 26 | 30 |
| 1990 | 6 | 4.6 |
| 1991 | 2 | 4.6 |
| 1993 | 5 | 4.6 |
| 1994 | 6 | 4.6 |
| 1995 | 3 | 4.6 |
| 1996 | 11 | 4.6 |
| 1997 | 2 | 4.6 |
| 1998 | 2 | 4.6 |
| 2000 | 1 | 8.8 |
| 2002 | 5 | 8.8 |
| 2003 | 18 | 8.8 |
| 2004 | 13 | 8.8 |
| 2005 | 4 | 8.8 |
| 2006 | 13 | 8.8 |
| 2008 | 2 | 8.8 |
| 2009 | 14 | 8.8 |
| 2010 | 3 | 8.9 |
| 2011 | 1 | 8.9 |
| 2013 | 4 | 8.9 |
| 2014 | 7 | 8.9 |
| 2015 | 17 | 8.9 |
| 2016 | 25 | 8.9 |
| 2017 | 9 | 8.9 |
| 2018 | 5 | 8.9 |
| 2019 | 9 | 8.9 |
| 2020 | 7 | 5.1 |
| 2021 | 3 | 5.1 |
| 2022 | 9 | 5.1 |
| 2023 | 3 | 5.1 |
| 2024 | 2 | 5.1 |
| 2025 | 2 | 5.1 |
| 2026 | 10 | 5.1 |
| Year | First date | Last date |
|---|---|---|
| 1976 | 1976-08-17 | 1976-11-02 |
| 1977 | 1977-08-18 | 1977-12-10 |
| 1978 | 1978-05-21 | 1978-10-29 |
| 1979 | 1979-08-09 | 1979-10-11 |
| 1980 | 1980-05-24 | 1980-12-04 |
| 1981 | 1981-05-09 | 1981-12-29 |
| 1982 | 1982-06-10 | 1982-12-03 |
| 1983 | 1983-08-23 | 1983-12-06 |
| 1984 | 1984-01-02 | 1984-10-31 |
| 1985 | 1985-06-16 | 1985-12-23 |
| 1986 | 1986-01-20 | 1986-12-28 |
| 1987 | 1987-01-02 | 1987-12-12 |
| 1988 | 1988-01-14 | 1988-12-10 |
| 1989 | 1989-02-16 | 1989-12-09 |
| 1990 | 1990-09-01 | 1990-11-12 |
| 1991 | 1991-09-26 | 1991-10-12 |
| 1993 | 1993-08-19 | 1993-10-07 |
| 1994 | 1994-01-11 | 1994-10-16 |
| 1995 | 1995-09-17 | 1995-09-22 |
| 1996 | 1996-05-09 | 1996-10-07 |
| 1997 | 1997-09-03 | 1997-09-23 |
| 1998 | 1998-08-13 | 1998-08-19 |
| 2000 | 2000-10-02 | 2000-10-02 |
| 2002 | 2002-07-31 | 2002-12-26 |
| 2003 | 2003-05-27 | 2003-10-28 |
| 2004 | 2004-05-10 | 2004-12-17 |
| 2005 | 2005-06-30 | 2005-09-26 |
| 2006 | 2006-07-20 | 2006-11-27 |
| 2008 | 2008-07-01 | 2008-09-30 |
| 2009 | 2009-05-27 | 2009-10-31 |
| 2010 | 2010-09-14 | 2010-10-23 |
| 2011 | 2011-10-02 | 2011-10-02 |
| 2013 | 2013-05-23 | 2013-10-28 |
| 2014 | 2014-05-23 | 2014-11-02 |
| 2015 | 2015-07-02 | 2015-11-03 |
| 2016 | 2016-04-05 | 2016-09-16 |
| 2017 | 2017-09-04 | 2017-11-03 |
| 2018 | 2018-09-24 | 2018-10-02 |
| 2019 | 2019-06-23 | 2019-12-11 |
| 2020 | 2020-03-17 | 2020-11-06 |
| 2021 | 2021-04-20 | 2021-09-17 |
| 2022 | 2022-08-17 | 2022-11-17 |
| 2023 | 2023-09-05 | 2023-10-14 |
| 2024 | 2024-09-01 | 2024-09-12 |
| 2025 | 2025-05-27 | 2025-10-13 |
| 2026 | 2026-08-23 | 2026-10-12 |
Every Fixed Threshold
| Threshold | Years with a qualifying day | Most days in a year | Year | Latest year days |
|---|---|---|---|---|
| 30 C (86 F): Days | 46 | 56 | 1986 | 10 |
| 90 F (32.2 C): Days | 6 | 6 | 1986 | 1 |
| 20 C (68 F): Tropical nights (min | 49 | 234 | 1988 | 134 |
| 25 C (77 F): Days with min | 2 | 1 | 2017 | 1 |
| 10 mm (0.39 in): Days with 10 mm or more rain | 46 | 146 | 2018 | 96 |
| 25 mm (0.98 in): Days with 25 mm or more rain | 46 | 78 | 2018 | 38 |
| 50 mm (1.97 in): Days with 50 mm or more rain | 46 | 31 | 1982 | 13 |
| 100 mm (3.94 in): Days with 100 mm or more rain | 42 | 8 | 2004 | 3 |
| 200 mm (7.87 in): Days with 200 mm or more rain | 7 | 1 | 1987 | 1 |
Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1976.
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).