Black Mtn Threshold Days by Year (USC00480778)
17 fixed thresholds counted per year at Black Mtn (USC00480778): hot days, frost, tropical nights and heavy rain, with the most days in a year.
Key Facts for Black Mtn Thresholds
- Black Mtn: days with a maximum temperature at or above 30 C (86 F) in 59 years, most in 2013 with 74.
- Black Mtn: days with a maximum temperature at or above 90 F (32.2 C) in 59 years, most in 2012 with 59.
- Black Mtn: days with a maximum temperature at or below 0 C (32 F) in 59 years, most in 1978 with 66.
- Black Mtn: days with a maximum temperature at or above 35 C (95 F) in 54 years, most in 2007 with 25.
- 17 fixed thresholds have at least one qualifying day at Black Mtn.
Days at or above 30 C (86 F)
59 years with a qualifying day| Year | Days | Decade average |
|---|---|---|
| 1964 | 23 | 31.3 |
| 1965 | 19 | 31.3 |
| 1966 | 49 | 31.3 |
| 1967 | 23 | 31.3 |
| 1968 | 26 | 31.3 |
| 1969 | 48 | 31.3 |
| 1970 | 50 | 38.4 |
| 1971 | 43 | 38.4 |
| 1972 | 24 | 38.4 |
| 1973 | 36 | 38.4 |
| 1974 | 50 | 38.4 |
| 1975 | 20 | 38.4 |
| 1977 | 35 | 38.4 |
| 1978 | 36 | 38.4 |
| 1979 | 52 | 38.4 |
| 1981 | 55 | 46.5 |
| 1982 | 36 | 46.5 |
| 1983 | 44 | 46.5 |
| 1984 | 48 | 46.5 |
| 1985 | 38 | 46.5 |
| 1986 | 34 | 46.5 |
| 1988 | 71 | 46.5 |
| 1989 | 46 | 46.5 |
| 1990 | 47 | 44.1 |
| 1991 | 48 | 44.1 |
| 1992 | 25 | 44.1 |
| 1993 | 14 | 44.1 |
| 1994 | 52 | 44.1 |
| 1995 | 49 | 44.1 |
| 1996 | 53 | 44.1 |
| 1997 | 43 | 44.1 |
| 1998 | 61 | 44.1 |
| 1999 | 49 | 44.1 |
| 2000 | 66 | 56 |
| 2002 | 56 | 56 |
| 2003 | 66 | 56 |
| 2004 | 32 | 56 |
| 2005 | 56 | 56 |
| 2006 | 63 | 56 |
| 2007 | 69 | 56 |
| 2008 | 51 | 56 |
| 2009 | 45 | 56 |
| 2010 | 50 | 50.1 |
| 2011 | 63 | 50.1 |
| 2012 | 72 | 50.1 |
| 2013 | 74 | 50.1 |
| 2014 | 22 | 50.1 |
| 2015 | 40 | 50.1 |
| 2016 | 54 | 50.1 |
| 2017 | 46 | 50.1 |
| 2018 | 39 | 50.1 |
| 2019 | 41 | 50.1 |
| 2020 | 56 | 50 |
| 2021 | 59 | 50 |
| 2022 | 61 | 50 |
| 2023 | 28 | 50 |
| 2024 | 52 | 50 |
| 2025 | 44 | 50 |
| 2026 | 50 | 50 |
| Year | First date | Last date |
|---|---|---|
| 1964 | 1964-06-27 | 1964-08-19 |
| 1965 | 1965-07-08 | 1965-08-14 |
| 1966 | 1966-06-20 | 1966-09-10 |
| 1967 | 1967-07-14 | 1967-09-06 |
| 1968 | 1968-06-04 | 1968-08-08 |
| 1969 | 1969-05-28 | 1969-09-04 |
| 1970 | 1970-06-06 | 1970-09-01 |
| 1971 | 1971-06-22 | 1971-09-11 |
| 1972 | 1972-06-08 | 1972-08-18 |
| 1973 | 1973-06-10 | 1973-08-27 |
| 1974 | 1974-06-13 | 1974-09-09 |
| 1975 | 1975-07-02 | 1975-09-03 |
| 1977 | 1977-06-02 | 1977-09-08 |
| 1978 | 1978-06-24 | 1978-09-10 |
| 1979 | 1979-05-27 | 1979-09-17 |
| 1981 | 1981-06-23 | 1981-09-25 |
| 1982 | 1982-06-28 | 1982-09-11 |
| 1983 | 1983-06-24 | 1983-09-09 |
| 1984 | 1984-05-31 | 1984-09-19 |
| 1985 | 1985-05-25 | 1985-08-11 |
| 1986 | 1986-06-04 | 1986-08-30 |
| 1988 | 1988-05-14 | 1988-10-12 |
| 1989 | 1989-06-16 | 1989-09-06 |
| 1990 | 1990-06-10 | 1990-09-13 |
| 1991 | 1991-06-20 | 1991-09-07 |
| 1992 | 1992-06-11 | 1992-09-24 |
| 1993 | 1993-06-28 | 1993-08-25 |
| 1994 | 1994-06-05 | 1994-09-10 |
| 1995 | 1995-06-14 | 1995-09-05 |
| 1996 | 1996-06-09 | 1996-09-11 |
| 1997 | 1997-06-06 | 1997-09-11 |
| 1998 | 1998-07-01 | 1998-09-18 |
| 1999 | 1999-06-21 | 1999-08-31 |
| 2000 | 2000-06-05 | 2000-09-17 |
| 2002 | 2002-05-30 | 2002-09-05 |
| 2003 | 2003-05-25 | 2003-09-05 |
| 2004 | 2004-06-03 | 2004-09-12 |
| 2005 | 2005-06-16 | 2005-09-09 |
| 2006 | 2006-06-02 | 2006-09-13 |
| 2007 | 2007-06-16 | 2007-09-12 |
| 2008 | 2008-06-17 | 2008-08-30 |
| 2009 | 2009-05-18 | 2009-09-26 |
| 2010 | 2010-06-24 | 2010-09-28 |
| 2011 | 2011-06-06 | 2011-10-01 |
| 2012 | 2012-05-16 | 2012-09-15 |
| 2013 | 2013-05-13 | 2013-09-07 |
| 2014 | 2014-05-29 | 2014-09-26 |
| 2015 | 2015-06-20 | 2015-09-27 |
| 2016 | 2016-06-08 | 2016-09-03 |
| 2017 | 2017-06-05 | 2017-09-13 |
| 2018 | 2018-06-10 | 2018-09-16 |
| 2019 | 2019-06-28 | 2019-09-06 |
| 2020 | 2020-06-02 | 2020-09-06 |
| 2021 | 2021-06-04 | 2021-09-11 |
| 2022 | 2022-06-17 | 2022-09-09 |
| 2023 | 2023-07-11 | 2023-09-04 |
| 2024 | 2024-06-13 | 2024-09-30 |
| 2025 | 2025-06-03 | 2025-09-11 |
| 2026 | 2026-05-14 | 2026-09-14 |
Every Fixed Threshold
| Threshold | Years with a qualifying day | Most days in a year | Year | Latest year days |
|---|---|---|---|---|
| 30 C (86 F): Days | 59 | 74 | 2013 | 50 |
| 35 C (95 F): Days | 54 | 25 | 2007 | 12 |
| 40 C (104 F): Days | 3 | 1 | 2002 | 1 |
| 90 F (32.2 C): Days | 59 | 59 | 2012 | 35 |
| 100 F (37.8 C): Days | 14 | 6 | 2006 | 2 |
| 0 C (32 F): Ice days (max | 59 | 66 | 1978 | 9 |
| 0 C (32 F): Frost days (min | 52 | 191 | 1970 | 80 |
| -10 C (14 F): Days with min | 52 | 75 | 1985 | 15 |
| -20 C (-4 F): Days with min | 50 | 24 | 1985 | 1 |
| -30 C (-22 F): Days with min | 8 | 6 | 1990 | 2 |
| 20 C (68 F): Tropical nights (min | 50 | 23 | 2007 | 5 |
| 25 C (77 F): Days with min | 1 | 1 | 2007 | 1 |
| 10 mm (0.39 in): Days with 10 mm or more rain | 54 | 24 | 1998 | 6 |
| 25 mm (0.98 in): Days with 25 mm or more rain | 41 | 5 | 2017 | 1 |
| 50 mm (1.97 in): Days with 50 mm or more rain | 4 | 2 | 1978 | 1 |
| 10 cm (3.9 in): Days with 10 cm or more snowfall | 46 | 14 | 1967 | 2 |
| 25 cm (9.8 in): Days with 25 cm or more snowfall | 13 | 4 | 1991 | 1 |
Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1964.
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).