Black Mountain Threshold Days by Year (ASN00084044)

4 fixed thresholds counted per year at Black Mountain (ASN00084044): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Black Mountain Thresholds

Black Mountain: days with 10 mm (0.39 in) or more of precipitation in 70 years, most in 1974 with 34.
Black Mountain: days with 25 mm (0.98 in) or more of precipitation in 68 years, most in 1974 with 10.
Black Mountain: days with 50 mm (1.97 in) or more of precipitation in 27 years, most in 1957 with 3.
Black Mountain: days with 100 mm (3.94 in) or more of precipitation in 2 years, most in 1964 with 1.
4 fixed thresholds have at least one qualifying day at Black Mountain.

Days with 10 mm (0.39 in) or more of precipitation

70 years with a qualifying day

Days per year at Black Mountain with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 34 in 1974.

Days with 10 mm (0.39 in) or more of precipitation per year at Black Mountain
Year	Days	Decade average
1953	15	21.1
1954	18	21.1
1955	20	21.1
1956	25	21.1
1957	18	21.1
1958	25	21.1
1959	27	21.1
1960	24	20.7
1961	23	20.7
1962	20	20.7
1963	22	20.7
1964	25	20.7
1965	17	20.7
1966	22	20.7
1967	13	20.7
1968	12	20.7
1969	29	20.7
1970	28	22.8
1971	33	22.8
1972	12	22.8
1973	19	22.8
1974	34	22.8
1975	27	22.8
1976	15	22.8
1977	19	22.8
1978	32	22.8
1979	9	22.8
1980	19	18.9
1981	21	18.9
1982	10	18.9
1983	28	18.9
1984	14	18.9
1985	20	18.9
1986	11	18.9
1987	18	18.9
1988	22	18.9
1989	26	18.9
1990	23	20
1991	16	20
1992	27	20
1993	27	20
1994	19	20
1995	21	20
1996	23	20
1997	10	20
1998	18	20
1999	16	20
2000	21	17.5
2001	18	17.5
2002	24	17.5
2003	20	17.5
2004	11	17.5
2005	14	17.5
2006	12	17.5
2007	23	17.5
2008	15	17.5
2009	17	17.5
2010	30	21.9
2011	25	21.9
2012	24	21.9
2013	19	21.9
2014	27	21.9
2015	21	21.9
2016	26	21.9
2017	20	21.9
2018	14	21.9
2019	13	21.9
2020	19	14
2024	15	14
2026	8	14

For each year, a bar from the first to the last day at Black Mountain meeting 10 mm (0.39 in).

First to last qualifying date each year at Black Mountain
Year	First date	Last date
1953	1953-01-06	1953-12-07
1954	1954-01-20	1954-11-21
1955	1955-01-04	1955-12-21
1956	1956-01-10	1956-12-14
1957	1957-02-09	1957-12-31
1958	1958-01-28	1958-12-17
1959	1959-01-26	1959-12-25
1960	1960-01-12	1960-12-27
1961	1961-01-03	1961-12-18
1962	1962-01-09	1962-12-08
1963	1963-01-29	1963-12-12
1964	1964-02-07	1964-12-29
1965	1965-04-20	1965-12-02
1966	1966-01-30	1966-12-29
1967	1967-01-16	1967-11-16
1968	1968-01-11	1968-12-31
1969	1969-01-15	1969-12-20
1970	1970-01-02	1970-12-29
1971	1971-01-04	1971-12-31
1972	1972-01-11	1972-11-25
1973	1973-01-13	1973-12-22
1974	1974-01-05	1974-11-27
1975	1975-01-10	1975-12-14
1976	1976-01-06	1976-12-23
1977	1977-01-02	1977-12-28
1978	1978-01-06	1978-12-14
1979	1979-03-04	1979-11-25
1980	1980-01-04	1980-12-29
1981	1981-01-29	1981-12-27
1982	1982-01-26	1982-12-30
1983	1983-01-02	1983-12-07
1984	1984-01-16	1984-12-15
1985	1985-01-03	1985-12-24
1986	1986-03-10	1986-11-21
1987	1987-01-04	1987-12-02
1988	1988-02-07	1988-12-26
1989	1989-01-02	1989-12-14
1990	1990-01-09	1990-12-11
1991	1991-01-06	1991-12-14
1992	1992-01-01	1992-12-23
1993	1993-02-02	1993-12-28
1994	1994-01-30	1994-12-08
1995	1995-01-17	1995-12-06
1996	1996-01-01	1996-12-26
1997	1997-01-07	1997-11-01
1998	1998-01-26	1998-12-27
1999	1999-01-23	1999-12-29
2000	2000-01-09	2000-12-23
2001	2001-01-25	2001-12-27
2002	2002-01-22	2002-12-01
2003	2003-02-22	2003-12-22
2004	2004-01-22	2004-12-08
2005	2005-01-20	2005-12-03
2006	2006-01-12	2006-12-31
2007	2007-01-18	2007-12-22
2008	2008-01-21	2008-12-19
2009	2009-01-12	2009-12-25
2010	2010-01-02	2010-12-20
2011	2011-01-10	2011-12-25
2012	2012-02-12	2012-12-02
2013	2013-01-29	2013-12-24
2014	2014-01-25	2014-12-30
2015	2015-01-11	2015-12-27
2016	2016-01-04	2016-12-30
2017	2017-02-07	2017-12-29
2018	2018-01-14	2018-12-22
2019	2019-02-05	2019-11-27
2020	2020-01-16	2020-11-24
2024	2024-02-14	2024-12-07
2026	2026-02-23	2026-06-04

Every Fixed Threshold

Fixed thresholds at Black Mountain
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
10 mm (0.39 in): Days with 10 mm or more rain	70	34	1974	8
25 mm (0.98 in): Days with 25 mm or more rain	68	10	1974	3
50 mm (1.97 in): Days with 50 mm or more rain	27	3	1957	1
100 mm (3.94 in): Days with 100 mm or more rain	2	1	1964	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1953.

Download the Data

Data for Black Mountain threshold days by year: CSV or JSON. Field meanings are on the data page.

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 2026-10-12. Last revised 12 October 2026 (2026-10-12).

Black Mountain Threshold Days by Year (ASN00084044)

Key Facts for Black Mountain Thresholds

Days with 10 mm (0.39 in) or more of precipitation

Every Fixed Threshold

Download the Data

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