Mt Locke Threshold Days by Year (USC00416104)

15 fixed thresholds counted per year at Mt Locke (USC00416104): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Mt Locke Thresholds

Mt Locke: days with 10 mm (0.39 in) or more of precipitation in 92 years, most in 2004 with 35.
Mt Locke: days with 25 mm (0.98 in) or more of precipitation in 90 years, most in 2017 with 12.
Mt Locke: nights with a minimum temperature at or below 0 C (32 F) in 89 years, most in 2013 with 85.
Mt Locke: days with a maximum temperature at or above 30 C (86 F) in 87 years, most in 2011 with 111.
15 fixed thresholds have at least one qualifying day at Mt Locke.

Days at or above 30 C (86 F)

87 years with a qualifying day

Days per year at Mt Locke with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 111 in 2011.

Days at or above 30 C (86 F) per year at Mt Locke
Year	Days	Decade average
1936	13	20.5
1937	29	20.5
1938	11	20.5
1939	29	20.5
1940	16	24.3
1941	2	24.3
1942	13	24.3
1943	46	24.3
1944	32	24.3
1945	34	24.3
1946	42	24.3
1947	17	24.3
1949	17	24.3
1950	14	37.8
1951	58	37.8
1952	46	37.8
1953	59	37.8
1954	18	37.8
1955	21	37.8
1956	39	37.8
1957	41	37.8
1958	45	37.8
1959	37	37.8
1960	29	33.8
1961	34	33.8
1962	40	33.8
1963	36	33.8
1964	47	33.8
1965	26	33.8
1966	31	33.8
1967	26	33.8
1968	16	33.8
1969	53	33.8
1970	31	29.3
1971	29	29.3
1972	22	29.3
1973	27	29.3
1974	42	29.3
1975	14	29.3
1976	12	29.3
1977	48	29.3
1978	42	29.3
1979	26	29.3
1980	71	37.6
1982	42	37.6
1984	12	37.6
1985	46	37.6
1986	21	37.6
1987	30	37.6
1988	24	37.6
1989	55	37.6
1990	43	52.4
1991	26	52.4
1992	39	52.4
1993	34	52.4
1994	63	52.4
1995	66	52.4
1996	70	52.4
1997	48	52.4
1998	85	52.4
1999	50	52.4
2000	94	62.8
2001	70	62.8
2002	72	62.8
2003	61	62.8
2004	58	62.8
2005	69	62.8
2007	28	62.8
2008	46	62.8
2009	67	62.8
2010	60	67.6
2011	111	67.6
2012	77	67.6
2013	61	67.6
2014	38	67.6
2015	58	67.6
2016	58	67.6
2017	43	67.6
2018	83	67.6
2019	87	67.6
2020	107	86
2021	57	86
2022	62	86
2023	105	86
2024	110	86
2025	65	86
2026	96	86

For each year, a bar from the first to the last day at Mt Locke meeting 30 C (86 F).

First to last qualifying date each year at Mt Locke
Year	First date	Last date
1936	1936-06-06	1936-08-13
1937	1937-06-11	1937-08-15
1938	1938-05-28	1938-08-20
1939	1939-05-19	1939-09-07
1940	1940-05-03	1940-09-16
1941	1941-05-09	1941-06-09
1942	1942-05-26	1942-08-10
1943	1943-05-03	1943-09-13
1944	1944-05-31	1944-08-15
1945	1945-05-18	1945-09-20
1946	1946-03-31	1946-08-26
1947	1947-05-04	1947-08-11
1949	1949-05-23	1949-07-20
1950	1950-04-22	1950-08-24
1951	1951-05-27	1951-10-05
1952	1952-05-08	1952-09-20
1953	1953-05-21	1953-09-27
1954	1954-06-01	1954-07-27
1955	1955-05-18	1955-07-09
1956	1956-05-06	1956-09-17
1957	1957-06-10	1957-09-20
1958	1958-05-28	1958-08-20
1959	1959-04-26	1959-09-19
1960	1960-05-13	1960-08-03
1961	1961-04-21	1961-08-30
1962	1962-05-07	1962-08-30
1963	1963-05-10	1963-07-30
1964	1964-05-12	1964-09-02
1965	1965-04-21	1965-08-08
1966	1966-05-16	1966-08-01
1967	1967-05-08	1967-10-26
1968	1968-05-29	1968-07-13
1969	1969-05-20	1969-09-08
1970	1970-05-11	1970-09-20
1971	1971-05-18	1971-07-29
1972	1972-04-10	1972-09-30
1973	1973-05-10	1973-10-24
1974	1974-04-25	1974-09-11
1975	1975-06-02	1975-06-27
1976	1976-05-15	1976-08-13
1977	1977-05-29	1977-09-30
1978	1978-05-12	1978-07-20
1979	1979-06-14	1979-07-30
1980	1980-05-28	1980-09-21
1982	1982-06-05	1982-09-26
1984	1984-05-11	1984-09-14
1985	1985-05-10	1985-09-08
1986	1986-05-13	1986-08-21
1987	1987-04-18	1987-09-14
1988	1988-03-25	1988-09-22
1989	1989-05-05	1989-09-05
1990	1990-05-14	1990-07-11
1991	1991-05-10	1991-07-09
1992	1992-06-12	1992-09-10
1993	1993-05-31	1993-09-21
1994	1994-05-07	1994-10-05
1995	1995-05-15	1995-09-09
1996	1996-04-28	1996-08-16
1997	1997-05-06	1997-09-28
1998	1998-05-11	1998-10-13
1999	1999-04-21	1999-10-04
2000	2000-04-19	2000-10-06
2001	2001-04-20	2001-09-20
2002	2002-04-24	2002-10-02
2003	2003-05-03	2003-10-04
2004	2004-05-06	2004-09-18
2005	2005-05-20	2005-10-02
2007	2007-05-05	2007-09-17
2008	2008-04-23	2008-08-14
2009	2009-05-02	2009-10-01
2010	2010-05-06	2010-09-14
2011	2011-03-19	2011-09-28
2012	2012-04-23	2012-09-12
2013	2013-05-17	2013-09-27
2014	2014-05-19	2014-10-18
2015	2015-06-04	2015-10-03
2016	2016-05-07	2016-09-21
2017	2017-03-22	2017-09-23
2018	2018-05-08	2018-10-05
2019	2019-04-28	2019-09-21
2020	2020-04-28	2020-10-22
2021	2021-04-26	2021-10-10
2022	2022-04-21	2022-09-21
2023	2023-05-08	2023-10-21
2024	2024-04-25	2024-10-25
2025	2025-02-04	2025-10-07
2026	2026-03-03	2026-09-29

Every Fixed Threshold

Fixed thresholds at Mt Locke
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	87	111	2011	96
35 C (95 F): Days	47	31	2023	18
40 C (104 F): Days	3	1	1969	1
90 F (32.2 C): Days	85	80	2011	60
100 F (37.8 C): Days	12	6	2023	6
0 C (32 F): Ice days (max	74	9	2011	1
0 C (32 F): Frost days (min	89	85	2013	25
-10 C (14 F): Days with min	77	12	1963	1
-20 C (-4 F): Days with min	3	3	2011	3
20 C (68 F): Tropical nights (min	57	21	2023	5
10 mm (0.39 in): Days with 10 mm or more rain	92	35	2004	10
25 mm (0.98 in): Days with 25 mm or more rain	90	12	2017	2
50 mm (1.97 in): Days with 50 mm or more rain	36	3	1940	1
100 mm (3.94 in): Days with 100 mm or more rain	1	1	1984	1
10 cm (3.9 in): Days with 10 cm or more snowfall	21	3	1958	2

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1936.

Download the Data

Data for Mt Locke 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 2026-10-17. Last revised 17 October 2026 (2026-10-17).

Mt Locke Threshold Days by Year (USC00416104)

Key Facts for Mt Locke Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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