Mt Clemens Ang Base Threshold Days by Year (USW00014804)

18 fixed thresholds counted per year at Mt Clemens Ang Base (USW00014804): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Mt Clemens Ang Base Thresholds

Mt Clemens Ang Base: days with a maximum temperature at or above 30 C (86 F) in 112 years, most in 1925 with 61.
Mt Clemens Ang Base: days with a maximum temperature at or below 0 C (32 F) in 112 years, most in 1960 with 75.
Mt Clemens Ang Base: nights with a minimum temperature at or below 0 C (32 F) in 111 years, most in 2013 with 170.
Mt Clemens Ang Base: nights with a minimum temperature at or below -10 C (14 F) in 111 years, most in 1963 with 60.
18 fixed thresholds have at least one qualifying day at Mt Clemens Ang Base.

Days at or above 30 C (86 F)

112 years with a qualifying day

Days per year at Mt Clemens Ang Base with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 61 in 1925.

Days at or above 30 C (86 F) per year at Mt Clemens Ang Base
Year	Days	Decade average
1897	39	43.3
1898	42	43.3
1899	49	43.3
1900	57	37.8
1906	33	37.8
1908	37	37.8
1909	24	37.8
1910	35	33.9
1911	51	33.9
1912	24	33.9
1913	38	33.9
1914	37	33.9
1915	17	33.9
1916	45	33.9
1917	24	33.9
1922	38	41
1923	36	41
1924	29	41
1925	61	41
1930	22	26.3
1931	32	26.3
1932	19	26.3
1933	35	26.3
1934	34	26.3
1935	18	26.3
1936	33	26.3
1937	20	26.3
1938	24	26.3
1939	26	26.3
1940	22	28.1
1941	39	28.1
1942	23	28.1
1943	30	28.1
1944	42	28.1
1945	18	28.1
1946	15	28.1
1947	31	28.1
1948	17	28.1
1949	44	28.1
1950	14	26.4
1951	14	26.4
1952	41	26.4
1953	32	26.4
1954	26	26.4
1955	48	26.4
1956	20	26.4
1957	18	26.4
1958	18	26.4
1959	33	26.4
1960	16	20.2
1961	22	20.2
1962	14	20.2
1963	21	20.2
1964	27	20.2
1965	11	20.2
1966	25	20.2
1967	13	20.2
1968	19	20.2
1969	34	20.2
1970	20	17.1
1971	26	17.1
1972	14	17.1
1973	19	17.1
1974	25	17.1
1975	7	17.1
1976	17	17.1
1977	19	17.1
1978	16	17.1
1979	8	17.1
1980	16	21.6
1981	12	21.6
1982	8	21.6
1983	33	21.6
1984	21	21.6
1985	10	21.6
1986	12	21.6
1987	38	21.6
1988	49	21.6
1989	17	21.6
1990	17	26.4
1992	5	26.4
1994	21	26.4
1995	35	26.4
1996	25	26.4
1997	32	26.4
1998	39	26.4
1999	37	26.4
2000	12	26.1
2001	34	26.1
2002	47	26.1
2003	23	26.1
2004	11	26.1
2005	51	26.1
2006	24	26.1
2007	34	26.1
2008	15	26.1
2009	10	26.1
2010	35	20
2011	2	20
2012	6	20
2013	8	20
2016	34	20
2017	20	20
2018	31	20
2019	24	20
2020	35	26.9
2021	31	26.9
2022	28	26.9
2023	11	26.9
2024	21	26.9
2025	33	26.9
2026	29	26.9

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

First to last qualifying date each year at Mt Clemens Ang Base
Year	First date	Last date
1897	1897-06-14	1897-10-15
1898	1898-06-04	1898-09-04
1899	1899-04-30	1899-09-17
1900	1900-05-14	1900-10-06
1906	1906-05-17	1906-09-19
1908	1908-05-28	1908-10-18
1909	1909-06-21	1909-09-14
1910	1910-05-19	1910-08-30
1911	1911-05-15	1911-09-16
1912	1912-05-23	1912-09-10
1913	1913-05-02	1913-09-07
1914	1914-05-25	1914-09-22
1915	1915-04-24	1915-09-16
1916	1916-07-02	1916-09-27
1917	1917-05-19	1917-08-20
1922	1922-05-11	1922-10-06
1923	1923-04-20	1923-08-19
1924	1924-06-14	1924-08-31
1925	1925-04-23	1925-09-20
1930	1930-06-04	1930-08-09
1931	1931-05-29	1931-09-23
1932	1932-05-15	1932-09-01
1933	1933-06-06	1933-09-08
1934	1934-05-19	1934-08-19
1935	1935-07-05	1935-09-18
1936	1936-05-07	1936-09-23
1937	1937-05-31	1937-09-03
1938	1938-06-21	1938-08-23
1939	1939-05-19	1939-10-08
1940	1940-06-03	1940-09-20
1941	1941-04-13	1941-09-22
1942	1942-04-30	1942-09-02
1943	1943-06-03	1943-09-05
1944	1944-05-26	1944-09-04
1945	1945-06-23	1945-09-07
1946	1946-06-24	1946-09-06
1947	1947-06-10	1947-09-19
1948	1948-06-04	1948-09-18
1949	1949-05-04	1949-10-09
1950	1950-06-07	1950-08-17
1951	1951-05-16	1951-10-05
1952	1952-06-06	1952-10-01
1953	1953-06-05	1953-09-04
1954	1954-06-09	1954-09-07
1955	1955-05-04	1955-09-19
1956	1956-05-30	1956-08-31
1957	1957-06-16	1957-08-15
1958	1958-06-29	1958-09-06
1959	1959-06-08	1959-09-23
1960	1960-04-23	1960-09-08
1961	1961-06-12	1961-09-13
1962	1962-05-14	1962-08-30
1963	1963-06-06	1963-10-07
1964	1964-05-22	1964-09-10
1965	1965-06-20	1965-09-18
1966	1966-05-27	1966-09-02
1967	1967-06-09	1967-08-17
1968	1968-06-07	1968-08-24
1969	1969-05-28	1969-09-06
1970	1970-06-08	1970-09-21
1971	1971-05-18	1971-09-08
1972	1972-06-14	1972-07-24
1973	1973-06-10	1973-09-04
1974	1974-06-04	1974-09-11
1975	1975-06-23	1975-08-10
1976	1976-06-08	1976-09-08
1977	1977-05-17	1977-08-28
1978	1978-06-27	1978-09-20
1979	1979-06-10	1979-08-30
1980	1980-06-26	1980-09-21
1981	1981-06-15	1981-08-13
1982	1982-07-07	1982-09-13
1983	1983-06-23	1983-09-18
1984	1984-06-06	1984-09-02
1985	1985-06-08	1985-09-07
1986	1986-05-31	1986-08-17
1987	1987-05-09	1987-08-16
1988	1988-05-15	1988-08-17
1989	1989-06-23	1989-08-29
1990	1990-04-25	1990-09-01
1992	1992-05-17	1992-08-25
1994	1994-04-25	1994-09-16
1995	1995-06-17	1995-09-06
1996	1996-05-18	1996-09-05
1997	1997-06-10	1997-10-04
1998	1998-05-15	1998-09-27
1999	1999-05-17	1999-09-12
2000	2000-05-06	2000-09-01
2001	2001-06-13	2001-09-07
2002	2002-04-16	2002-09-19
2003	2003-04-15	2003-08-26
2004	2004-05-10	2004-08-27
2005	2005-06-05	2005-09-21
2006	2006-05-28	2006-08-07
2007	2007-05-15	2007-10-08
2008	2008-06-06	2008-09-03
2009	2009-06-23	2009-08-18
2010	2010-05-31	2010-09-24
2011	2011-07-02	2011-08-24
2012	2012-07-09	2012-08-10
2013	2013-06-08	2013-08-17
2016	2016-05-29	2016-09-22
2017	2017-05-17	2017-09-26
2018	2018-05-28	2018-09-21
2019	2019-05-25	2019-10-01
2020	2020-05-26	2020-08-27
2021	2021-05-20	2021-09-14
2022	2022-05-30	2022-09-18
2023	2023-06-01	2023-09-05
2024	2024-05-22	2024-08-30
2025	2025-06-04	2025-10-06
2026	2026-05-18	2026-09-02

Every Fixed Threshold

Fixed thresholds at Mt Clemens Ang Base
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	112	61	1925	29
35 C (95 F): Days	68	17	1925	6
40 C (104 F): Days	5	2	1911	1
90 F (32.2 C): Days	108	36	1925	12
100 F (37.8 C): Days	14	5	1988	2
0 C (32 F): Ice days (max	112	75	1960	30
0 C (32 F): Frost days (min	111	170	2013	79
-10 C (14 F): Days with min	111	60	1963	29
-20 C (-4 F): Days with min	63	16	1917	2
-30 C (-22 F): Days with min	3	1	1912	1
20 C (68 F): Tropical nights (min	107	40	1995	34
25 C (77 F): Days with min	24	2	1942	2
10 mm (0.39 in): Days with 10 mm or more rain	99	40	2024	23
25 mm (0.98 in): Days with 25 mm or more rain	98	12	1911	6
50 mm (1.97 in): Days with 50 mm or more rain	43	3	1898	1
100 mm (3.94 in): Days with 100 mm or more rain	2	1	1968	1
10 cm (3.9 in): Days with 10 cm or more snowfall	60	9	2011	1
25 cm (9.8 in): Days with 25 cm or more snowfall	8	1	1909	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1897.

Download the Data

Data for Mt Clemens Ang Base 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 Clemens Ang Base Threshold Days by Year (USW00014804)

Key Facts for Mt Clemens Ang Base Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

Related