Alpena Co Rgnl AP Threshold Days by Year (USW00094849)

18 fixed thresholds counted per year at Alpena Co Rgnl AP (USW00094849): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Alpena Co Rgnl AP Thresholds

Alpena Co Rgnl AP: days with 10 mm (0.39 in) or more of precipitation in 108 years, most in 1954 with 34.
Alpena Co Rgnl AP: days with a maximum temperature at or above 30 C (86 F) in 107 years, most in 1983 with 39.
Alpena Co Rgnl AP: days with a maximum temperature at or below 0 C (32 F) in 107 years, most in 1978 with 97.
Alpena Co Rgnl AP: nights with a minimum temperature at or below 0 C (32 F) in 106 years, most in 1925 with 207.
18 fixed thresholds have at least one qualifying day at Alpena Co Rgnl AP.

Days at or above 30 C (86 F)

107 years with a qualifying day

Days per year at Alpena Co Rgnl AP with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 39 in 1983.

Days at or above 30 C (86 F) per year at Alpena Co Rgnl AP
Year	Days	Decade average
1917	12	19.3
1918	17	19.3
1919	29	19.3
1920	24	15.4
1921	25	15.4
1922	15	15.4
1923	12	15.4
1924	6	15.4
1925	23	15.4
1926	8	15.4
1927	13	15.4
1928	8	15.4
1929	20	15.4
1930	23	23.3
1931	32	23.3
1932	13	23.3
1933	33	23.3
1934	20	23.3
1935	8	23.3
1936	27	23.3
1937	32	23.3
1938	21	23.3
1939	24	23.3
1940	21	21
1941	33	21
1942	7	21
1943	17	21
1944	31	21
1945	13	21
1946	12	21
1947	26	21
1948	20	21
1949	30	21
1950	10	16.7
1951	12	16.7
1952	24	16.7
1953	26	16.7
1954	17	16.7
1956	12	16.7
1957	16	16.7
1960	10	16
1961	19	16
1962	15	16
1963	18	16
1964	19	16
1965	10	16
1966	28	16
1967	7	16
1968	18	16
1969	16	16
1970	19	16.8
1971	14	16.8
1972	7	16.8
1973	16	16.8
1974	12	16.8
1975	22	16.8
1976	27	16.8
1977	16	16.8
1978	21	16.8
1979	14	16.8
1980	15	19.7
1981	11	19.7
1982	12	19.7
1983	39	19.7
1984	16	19.7
1985	10	19.7
1986	11	19.7
1987	29	19.7
1988	37	19.7
1989	17	19.7
1990	13	15.3
1991	27	15.3
1992	7	15.3
1993	13	15.3
1994	8	15.3
1995	19	15.3
1996	9	15.3
1997	16	15.3
1998	18	15.3
1999	23	15.3
2000	8	16.9
2001	23	16.9
2002	26	16.9
2003	13	16.9
2004	10	16.9
2005	27	16.9
2006	18	16.9
2007	29	16.9
2008	7	16.9
2009	8	16.9
2010	16	22.6
2011	17	22.6
2012	35	22.6
2013	18	22.6
2014	8	22.6
2015	23	22.6
2016	38	22.6
2017	20	22.6
2018	33	22.6
2019	18	22.6
2020	30	22
2021	27	22
2022	23	22
2023	21	22
2024	20	22
2025	21	22
2026	12	22

For each year, a bar from the first to the last day at Alpena Co Rgnl AP meeting 30 C (86 F).

First to last qualifying date each year at Alpena Co Rgnl AP
Year	First date	Last date
1917	1917-06-12	1917-09-18
1918	1918-05-05	1918-08-25
1919	1919-05-29	1919-09-08
1920	1920-05-31	1920-09-26
1921	1921-05-20	1921-09-02
1922	1922-06-07	1922-09-30
1923	1923-06-01	1923-08-01
1924	1924-06-22	1924-08-30
1925	1925-05-31	1925-09-20
1926	1926-07-08	1926-10-04
1927	1927-05-22	1927-09-15
1928	1928-07-07	1928-10-11
1929	1929-05-29	1929-09-05
1930	1930-05-05	1930-09-01
1931	1931-05-18	1931-09-21
1932	1932-05-15	1932-09-19
1933	1933-05-24	1933-09-08
1934	1934-05-04	1934-08-18
1935	1935-07-04	1935-08-19
1936	1936-05-07	1936-09-23
1937	1937-05-30	1937-09-23
1938	1938-06-15	1938-10-11
1939	1939-05-06	1939-09-15
1940	1940-06-02	1940-09-20
1941	1941-05-20	1941-09-22
1942	1942-08-19	1942-09-17
1943	1943-06-03	1943-09-01
1944	1944-05-26	1944-08-16
1945	1945-06-14	1945-09-08
1946	1946-06-23	1946-08-16
1947	1947-06-10	1947-09-09
1948	1948-06-01	1948-09-05
1949	1949-05-03	1949-09-04
1950	1950-06-07	1950-08-24
1951	1951-05-15	1951-09-12
1952	1952-06-06	1952-09-13
1953	1953-05-09	1953-10-17
1954	1954-06-09	1954-09-02
1956	1956-05-22	1956-08-08
1957	1957-05-08	1957-09-02
1960	1960-07-09	1960-09-08
1961	1961-05-13	1961-09-11
1962	1962-05-15	1962-08-31
1963	1963-06-02	1963-10-06
1964	1964-05-22	1964-08-30
1965	1965-05-08	1965-09-19
1966	1966-06-05	1966-09-01
1967	1967-06-04	1967-08-16
1968	1968-06-05	1968-08-24
1969	1969-05-16	1969-08-31
1970	1970-05-21	1970-08-15
1971	1971-06-04	1971-10-01
1972	1972-05-29	1972-08-21
1973	1973-06-10	1973-09-03
1974	1974-06-05	1974-08-22
1975	1975-05-18	1975-08-09
1976	1976-04-16	1976-09-14
1977	1977-05-17	1977-08-27
1978	1978-05-19	1978-08-22
1979	1979-05-08	1979-09-01
1980	1980-05-05	1980-08-25
1981	1981-06-05	1981-08-01
1982	1982-05-11	1982-09-13
1983	1983-06-12	1983-09-10
1984	1984-06-06	1984-08-28
1985	1985-04-21	1985-09-03
1986	1986-05-06	1986-07-24
1987	1987-04-20	1987-08-03
1988	1988-05-27	1988-08-14
1989	1989-07-01	1989-08-05
1990	1990-04-25	1990-09-01
1991	1991-04-07	1991-08-30
1992	1992-05-22	1992-08-25
1993	1993-07-04	1993-08-27
1994	1994-05-22	1994-08-25
1995	1995-05-31	1995-08-19
1996	1996-05-18	1996-08-12
1997	1997-06-10	1997-08-02
1998	1998-05-18	1998-09-20
1999	1999-05-17	1999-09-04
2000	2000-05-05	2000-08-31
2001	2001-04-30	2001-08-09
2002	2002-04-16	2002-10-01
2003	2003-06-23	2003-08-21
2004	2004-05-12	2004-09-22
2005	2005-06-05	2005-09-13
2006	2006-05-29	2006-08-02
2007	2007-05-23	2007-10-08
2008	2008-06-06	2008-09-02
2009	2009-05-20	2009-08-16
2010	2010-05-26	2010-08-31
2011	2011-05-31	2011-09-02
2012	2012-03-21	2012-09-12
2013	2013-05-30	2013-09-10
2014	2014-05-26	2014-07-22
2015	2015-05-18	2015-09-15
2016	2016-05-24	2016-09-06
2017	2017-05-17	2017-09-26
2018	2018-05-01	2018-10-09
2019	2019-06-27	2019-09-21
2020	2020-05-26	2020-08-24
2021	2021-05-21	2021-08-29
2022	2022-05-12	2022-09-10
2023	2023-04-12	2023-10-03
2024	2024-06-12	2024-09-16
2025	2025-06-03	2025-10-04
2026	2026-05-18	2026-09-01

Every Fixed Threshold

Fixed thresholds at Alpena Co Rgnl AP
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	107	39	1983	12
35 C (95 F): Days	59	11	1988	1
40 C (104 F): Days	2	4	1936	4
90 F (32.2 C): Days	104	24	1988	4
100 F (37.8 C): Days	10	7	1936	1
0 C (32 F): Ice days (max	107	97	1978	53
0 C (32 F): Frost days (min	106	207	1925	110
-10 C (14 F): Days with min	106	93	1924	43
-20 C (-4 F): Days with min	104	38	1963	11
-30 C (-22 F): Days with min	24	5	1962	2
20 C (68 F): Tropical nights (min	78	8	1931	4
25 C (77 F): Days with min	4	1	1919	1
10 mm (0.39 in): Days with 10 mm or more rain	108	34	1954	27
25 mm (0.98 in): Days with 25 mm or more rain	105	8	1922	9
50 mm (1.97 in): Days with 50 mm or more rain	30	2	1918	2
100 mm (3.94 in): Days with 100 mm or more rain	1	1	1937	1
10 cm (3.9 in): Days with 10 cm or more snowfall	78	9	1951	5
25 cm (9.8 in): Days with 25 cm or more snowfall	25	3	1989	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1917.

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Data for Alpena Co Rgnl AP 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).

Alpena Co Rgnl AP Threshold Days by Year (USW00094849)

Key Facts for Alpena Co Rgnl AP Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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