Portland Kgw-Tv Threshold Days by Year
17 fixed thresholds counted per year at Portland Kgw-Tv (USC00356749): hot days, frost, tropical nights and heavy rain, with the most days in a year.
Key Facts for Portland Kgw-Tv Thresholds
- Portland Kgw-Tv: days with 10 mm (0.39 in) or more of precipitation in 50 years, most in 1982 with 53.
- Portland Kgw-Tv: days with 25 mm (0.98 in) or more of precipitation in 50 years, most in 1996 with 18.
- Portland Kgw-Tv: days with a maximum temperature at or above 30 C (86 F) in 48 years, most in 2018 with 40.
- Portland Kgw-Tv: days with a maximum temperature at or above 90 F (32.2 C) in 48 years, most in 2003 with 21.
- 17 fixed thresholds have at least one qualifying day at Portland Kgw-Tv.
Days at or above 30 C (86 F)
48 years with a qualifying day| Year | Days | Decade average |
|---|---|---|
| 1974 | 34 | 26 |
| 1975 | 23 | 26 |
| 1976 | 14 | 26 |
| 1977 | 29 | 26 |
| 1978 | 30 | 26 |
| 1980 | 15 | 22 |
| 1981 | 29 | 22 |
| 1982 | 25 | 22 |
| 1983 | 12 | 22 |
| 1984 | 15 | 22 |
| 1986 | 25 | 22 |
| 1987 | 35 | 22 |
| 1988 | 25 | 22 |
| 1989 | 17 | 22 |
| 1990 | 27 | 23.9 |
| 1991 | 24 | 23.9 |
| 1992 | 36 | 23.9 |
| 1993 | 19 | 23.9 |
| 1994 | 17 | 23.9 |
| 1995 | 19 | 23.9 |
| 1996 | 24 | 23.9 |
| 1997 | 21 | 23.9 |
| 1998 | 28 | 23.9 |
| 2000 | 19 | 24.1 |
| 2001 | 13 | 24.1 |
| 2002 | 24 | 24.1 |
| 2003 | 35 | 24.1 |
| 2004 | 26 | 24.1 |
| 2005 | 19 | 24.1 |
| 2007 | 22 | 24.1 |
| 2009 | 35 | 24.1 |
| 2010 | 16 | 25.8 |
| 2011 | 18 | 25.8 |
| 2012 | 20 | 25.8 |
| 2013 | 17 | 25.8 |
| 2014 | 32 | 25.8 |
| 2015 | 34 | 25.8 |
| 2016 | 28 | 25.8 |
| 2017 | 38 | 25.8 |
| 2018 | 40 | 25.8 |
| 2019 | 15 | 25.8 |
| 2020 | 24 | 29.6 |
| 2021 | 29 | 29.6 |
| 2022 | 36 | 29.6 |
| 2023 | 32 | 29.6 |
| 2024 | 31 | 29.6 |
| 2025 | 29 | 29.6 |
| 2026 | 26 | 29.6 |
| Year | First date | Last date |
|---|---|---|
| 1974 | 1974-06-10 | 1974-09-24 |
| 1975 | 1975-05-13 | 1975-09-30 |
| 1976 | 1976-05-09 | 1976-09-20 |
| 1977 | 1977-06-05 | 1977-09-12 |
| 1978 | 1978-05-20 | 1978-08-30 |
| 1980 | 1980-07-01 | 1980-10-05 |
| 1981 | 1981-06-25 | 1981-09-16 |
| 1982 | 1982-05-24 | 1982-09-02 |
| 1983 | 1983-05-22 | 1983-08-13 |
| 1984 | 1984-05-28 | 1984-08-26 |
| 1986 | 1986-05-25 | 1986-09-05 |
| 1987 | 1987-04-27 | 1987-10-06 |
| 1988 | 1988-05-11 | 1988-10-01 |
| 1989 | 1989-06-04 | 1989-09-28 |
| 1990 | 1990-06-21 | 1990-09-22 |
| 1991 | 1991-07-02 | 1991-09-25 |
| 1992 | 1992-05-03 | 1992-09-22 |
| 1993 | 1993-05-10 | 1993-09-29 |
| 1994 | 1994-05-07 | 1994-09-22 |
| 1995 | 1995-05-28 | 1995-09-14 |
| 1996 | 1996-06-02 | 1996-08-29 |
| 1997 | 1997-05-11 | 1997-09-24 |
| 1998 | 1998-04-29 | 1998-09-15 |
| 2000 | 2000-06-03 | 2000-09-13 |
| 2001 | 2001-05-22 | 2001-08-25 |
| 2002 | 2002-06-12 | 2002-09-13 |
| 2003 | 2003-05-23 | 2003-09-27 |
| 2004 | 2004-04-26 | 2004-08-30 |
| 2005 | 2005-05-26 | 2005-08-27 |
| 2007 | 2007-05-29 | 2007-09-11 |
| 2009 | 2009-05-28 | 2009-09-23 |
| 2010 | 2010-07-07 | 2010-09-27 |
| 2011 | 2011-06-04 | 2011-09-23 |
| 2012 | 2012-05-13 | 2012-09-18 |
| 2013 | 2013-05-11 | 2013-09-11 |
| 2014 | 2014-05-01 | 2014-09-21 |
| 2015 | 2015-06-06 | 2015-09-12 |
| 2016 | 2016-04-18 | 2016-09-26 |
| 2017 | 2017-05-04 | 2017-09-28 |
| 2018 | 2018-04-26 | 2018-09-28 |
| 2019 | 2019-05-10 | 2019-09-05 |
| 2020 | 2020-05-09 | 2020-09-29 |
| 2021 | 2021-06-01 | 2021-09-24 |
| 2022 | 2022-06-25 | 2022-10-02 |
| 2023 | 2023-04-28 | 2023-09-15 |
| 2024 | 2024-05-10 | 2024-09-24 |
| 2025 | 2025-06-07 | 2025-09-23 |
| 2026 | 2026-05-03 | 2026-09-17 |
Every Fixed Threshold
| Threshold | Years with a qualifying day | Most days in a year | Year | Latest year days |
|---|---|---|---|---|
| 30 C (86 F): Days | 48 | 40 | 2018 | 26 |
| 35 C (95 F): Days | 45 | 11 | 1981 | 1 |
| 40 C (104 F): Days | 6 | 3 | 1981 | 1 |
| 45 C (113 F): Days | 1 | 1 | 2021 | 1 |
| 90 F (32.2 C): Days | 48 | 21 | 2003 | 9 |
| 100 F (37.8 C): Days | 24 | 5 | 1977 | 1 |
| 110 F (43.3 C): Days | 1 | 2 | 2021 | 2 |
| 0 C (32 F): Ice days (max | 27 | 9 | 1990 | 1 |
| 0 C (32 F): Frost days (min | 48 | 48 | 1993 | 4 |
| -10 C (14 F): Days with min | 6 | 5 | 1990 | 3 |
| 20 C (68 F): Tropical nights (min | 31 | 9 | 2021 | 1 |
| 25 C (77 F): Days with min | 1 | 1 | 2021 | 1 |
| 10 mm (0.39 in): Days with 10 mm or more rain | 50 | 53 | 1982 | 19 |
| 25 mm (0.98 in): Days with 25 mm or more rain | 50 | 18 | 1996 | 3 |
| 50 mm (1.97 in): Days with 50 mm or more rain | 21 | 5 | 1996 | 1 |
| 10 cm (3.9 in): Days with 10 cm or more snowfall | 9 | 2 | 1980 | 1 |
| 25 cm (9.8 in): Days with 25 cm or more snowfall | 1 | 1 | 1995 | 1 |
Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1974.
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 (2026-10-16).