Mazama Threshold Days by Year (USC00455133)
18 fixed thresholds counted per year at Mazama (USC00455133): hot days, frost, tropical nights and heavy rain, with the most days in a year.
Key Facts for Mazama Thresholds
- Mazama: days with 10 mm (0.39 in) or more of precipitation in 56 years, most in 1998 with 32.
- Mazama: days with a maximum temperature at or above 30 C (86 F) in 54 years, most in 2017 with 66.
- Mazama: days with a maximum temperature at or above 90 F (32.2 C) in 54 years, most in 2017 with 44.
- Mazama: days with a maximum temperature at or below 0 C (32 F) in 54 years, most in 1985 with 87.
- 18 fixed thresholds have at least one qualifying day at Mazama.
Days at or above 30 C (86 F)
54 years with a qualifying day| Year | Days | Decade average |
|---|---|---|
| 1969 | 41 | 41 |
| 1970 | 48 | 32.1 |
| 1972 | 27 | 32.1 |
| 1974 | 35 | 32.1 |
| 1975 | 20 | 32.1 |
| 1976 | 11 | 32.1 |
| 1977 | 44 | 32.1 |
| 1978 | 30 | 32.1 |
| 1979 | 42 | 32.1 |
| 1980 | 20 | 30.3 |
| 1981 | 34 | 30.3 |
| 1982 | 30 | 30.3 |
| 1983 | 15 | 30.3 |
| 1984 | 24 | 30.3 |
| 1985 | 42 | 30.3 |
| 1986 | 45 | 30.3 |
| 1987 | 41 | 30.3 |
| 1988 | 32 | 30.3 |
| 1989 | 20 | 30.3 |
| 1990 | 38 | 29.8 |
| 1991 | 25 | 29.8 |
| 1992 | 33 | 29.8 |
| 1993 | 16 | 29.8 |
| 1994 | 42 | 29.8 |
| 1995 | 22 | 29.8 |
| 1996 | 33 | 29.8 |
| 1997 | 17 | 29.8 |
| 1998 | 46 | 29.8 |
| 1999 | 26 | 29.8 |
| 2000 | 28 | 41 |
| 2001 | 41 | 41 |
| 2002 | 39 | 41 |
| 2003 | 57 | 41 |
| 2004 | 44 | 41 |
| 2005 | 34 | 41 |
| 2006 | 45 | 41 |
| 2009 | 40 | 41 |
| 2010 | 25 | 41.1 |
| 2011 | 33 | 41.1 |
| 2012 | 37 | 41.1 |
| 2013 | 49 | 41.1 |
| 2014 | 41 | 41.1 |
| 2015 | 47 | 41.1 |
| 2016 | 34 | 41.1 |
| 2017 | 66 | 41.1 |
| 2018 | 41 | 41.1 |
| 2019 | 38 | 41.1 |
| 2020 | 47 | 50.9 |
| 2021 | 55 | 50.9 |
| 2022 | 49 | 50.9 |
| 2023 | 44 | 50.9 |
| 2024 | 50 | 50.9 |
| 2025 | 62 | 50.9 |
| 2026 | 49 | 50.9 |
| Year | First date | Last date |
|---|---|---|
| 1969 | 1969-06-03 | 1969-09-12 |
| 1970 | 1970-06-02 | 1970-08-26 |
| 1972 | 1972-07-05 | 1972-09-05 |
| 1974 | 1974-06-13 | 1974-09-26 |
| 1975 | 1975-07-03 | 1975-09-15 |
| 1976 | 1976-07-16 | 1976-09-02 |
| 1977 | 1977-04-24 | 1977-09-12 |
| 1978 | 1978-06-02 | 1978-08-09 |
| 1979 | 1979-06-02 | 1979-09-20 |
| 1980 | 1980-07-01 | 1980-08-13 |
| 1981 | 1981-06-25 | 1981-09-18 |
| 1982 | 1982-06-12 | 1982-09-02 |
| 1983 | 1983-05-24 | 1983-08-14 |
| 1984 | 1984-07-14 | 1984-08-22 |
| 1985 | 1985-05-17 | 1985-08-27 |
| 1986 | 1986-05-28 | 1986-09-04 |
| 1987 | 1987-05-07 | 1987-09-24 |
| 1988 | 1988-06-15 | 1988-09-14 |
| 1989 | 1989-06-05 | 1989-09-23 |
| 1990 | 1990-07-09 | 1990-09-24 |
| 1991 | 1991-07-02 | 1991-09-06 |
| 1992 | 1992-05-05 | 1992-08-19 |
| 1993 | 1993-05-12 | 1993-09-10 |
| 1994 | 1994-05-08 | 1994-09-28 |
| 1995 | 1995-05-29 | 1995-09-17 |
| 1996 | 1996-07-07 | 1996-09-11 |
| 1997 | 1997-07-19 | 1997-09-09 |
| 1998 | 1998-05-05 | 1998-09-16 |
| 1999 | 1999-05-24 | 1999-08-28 |
| 2000 | 2000-06-26 | 2000-09-14 |
| 2001 | 2001-05-22 | 2001-09-16 |
| 2002 | 2002-06-14 | 2002-09-14 |
| 2003 | 2003-06-04 | 2003-09-06 |
| 2004 | 2004-06-04 | 2004-08-31 |
| 2005 | 2005-05-28 | 2005-08-28 |
| 2006 | 2006-05-16 | 2006-09-08 |
| 2009 | 2009-05-30 | 2009-09-25 |
| 2010 | 2010-07-10 | 2010-08-27 |
| 2011 | 2011-07-06 | 2011-09-15 |
| 2012 | 2012-05-15 | 2012-09-19 |
| 2013 | 2013-05-07 | 2013-09-16 |
| 2014 | 2014-06-23 | 2014-09-17 |
| 2015 | 2015-06-07 | 2015-09-13 |
| 2016 | 2016-05-08 | 2016-08-27 |
| 2017 | 2017-05-30 | 2017-09-13 |
| 2018 | 2018-05-16 | 2018-08-18 |
| 2019 | 2019-06-02 | 2019-09-06 |
| 2020 | 2020-05-30 | 2020-09-12 |
| 2021 | 2021-06-01 | 2021-09-08 |
| 2022 | 2022-06-27 | 2022-09-05 |
| 2023 | 2023-05-03 | 2023-09-03 |
| 2024 | 2024-06-09 | 2024-09-08 |
| 2025 | 2025-05-29 | 2025-09-21 |
| 2026 | 2026-05-29 | 2026-09-02 |
Every Fixed Threshold
| Threshold | Years with a qualifying day | Most days in a year | Year | Latest year days |
|---|---|---|---|---|
| 30 C (86 F): Days | 54 | 66 | 2017 | 49 |
| 35 C (95 F): Days | 47 | 23 | 2015 | 9 |
| 40 C (104 F): Days | 6 | 5 | 2021 | 1 |
| 90 F (32.2 C): Days | 54 | 44 | 2017 | 31 |
| 100 F (37.8 C): Days | 25 | 9 | 2015 | 1 |
| 110 F (43.3 C): Days | 1 | 1 | 2021 | 1 |
| 0 C (32 F): Ice days (max | 54 | 87 | 1985 | 18 |
| 0 C (32 F): Frost days (min | 54 | 220 | 1970 | 100 |
| -10 C (14 F): Days with min | 54 | 104 | 1970 | 12 |
| -20 C (-4 F): Days with min | 48 | 22 | 1979 | 5 |
| -30 C (-22 F): Days with min | 11 | 6 | 1969 | 3 |
| 20 C (68 F): Tropical nights (min | 17 | 7 | 2024 | 1 |
| 10 mm (0.39 in): Days with 10 mm or more rain | 56 | 32 | 1998 | 4 |
| 25 mm (0.98 in): Days with 25 mm or more rain | 47 | 6 | 1972 | 1 |
| 50 mm (1.97 in): Days with 50 mm or more rain | 16 | 2 | 1990 | 1 |
| 10 cm (3.9 in): Days with 10 cm or more snowfall | 45 | 19 | 1970 | 2 |
| 25 cm (9.8 in): Days with 25 cm or more snowfall | 31 | 5 | 1996 | 2 |
| 50 cm (19.7 in): Days with 50 cm or more snowfall | 11 | 2 | 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 1969.
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).