Blue Hill Coop Threshold Days by Year (USC00190736)

18 fixed thresholds counted per year at Blue Hill Coop (USC00190736): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Blue Hill Coop Thresholds

Blue Hill Coop: days with a maximum temperature at or above 30 C (86 F) in 142 years, most in 2010 with 44.
Blue Hill Coop: days with a maximum temperature at or below 0 C (32 F) in 142 years, most in 1904 with 74.
Blue Hill Coop: nights with a minimum temperature at or below 0 C (32 F) in 140 years, most in 1887 with 157.
Blue Hill Coop: nights with a minimum temperature at or below -10 C (14 F) in 140 years, most in 1904 with 56.
18 fixed thresholds have at least one qualifying day at Blue Hill Coop.

Days at or above 30 C (86 F)

142 years with a qualifying day

Days per year at Blue Hill Coop with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 44 in 2010.

Days at or above 30 C (86 F) per year at Blue Hill Coop
Year	Days	Decade average
1885	9	6.2
1886	7	6.2
1887	7	6.2
1888	5	6.2
1889	3	6.2
1890	7	12.8
1891	8	12.8
1892	19	12.8
1893	12	12.8
1894	21	12.8
1895	13	12.8
1896	14	12.8
1897	4	12.8
1898	16	12.8
1899	14	12.8
1900	23	13.2
1901	17	13.2
1902	7	13.2
1903	11	13.2
1904	3	13.2
1905	14	13.2
1906	10	13.2
1907	12	13.2
1908	18	13.2
1909	17	13.2
1910	13	12.5
1911	19	12.5
1912	17	12.5
1913	13	12.5
1914	11	12.5
1915	7	12.5
1916	8	12.5
1917	8	12.5
1918	14	12.5
1919	15	12.5
1920	8	15.4
1921	21	15.4
1922	8	15.4
1923	15	15.4
1924	20	15.4
1925	15	15.4
1926	8	15.4
1927	9	15.4
1928	19	15.4
1929	31	15.4
1930	24	15.7
1931	23	15.7
1932	5	15.7
1933	13	15.7
1934	13	15.7
1935	12	15.7
1936	14	15.7
1937	22	15.7
1938	12	15.7
1939	19	15.7
1940	8	18.2
1941	22	18.2
1942	9	18.2
1943	25	18.2
1944	28	18.2
1945	13	18.2
1946	13	18.2
1947	15	18.2
1948	15	18.2
1949	34	18.2
1950	11	20
1951	16	20
1952	31	20
1953	22	20
1954	7	20
1955	35	20
1956	15	20
1957	26	20
1958	8	20
1959	29	20
1960	8	16.2
1961	19	16.2
1962	10	16.2
1963	18	16.2
1964	14	16.2
1965	28	16.2
1966	20	16.2
1967	10	16.2
1968	18	16.2
1969	17	16.2
1970	21	19.3
1971	25	19.3
1972	10	19.3
1973	21	19.3
1974	16	19.3
1975	17	19.3
1976	20	19.3
1977	23	19.3
1978	17	19.3
1979	23	19.3
1980	30	19.2
1981	15	19.2
1982	11	19.2
1983	38	19.2
1984	17	19.2
1985	6	19.2
1986	7	19.2
1987	19	19.2
1988	37	19.2
1989	12	19.2
1990	19	22.8
1991	35	22.8
1992	10	22.8
1993	28	22.8
1994	21	22.8
1995	27	22.8
1996	9	22.8
1997	25	22.8
1998	20	22.8
1999	34	22.8
2000	8	20.2
2001	23	20.2
2002	35	20.2
2003	14	20.2
2004	12	20.2
2005	32	20.2
2006	17	20.2
2007	30	20.2
2008	15	20.2
2009	16	20.2
2010	44	27.9
2011	21	27.9
2012	24	27.9
2013	21	27.9
2014	19	27.9
2015	30	27.9
2016	42	27.9
2017	21	27.9
2018	36	27.9
2019	21	27.9
2020	32	29.1
2021	29	29.1
2022	40	29.1
2023	20	29.1
2024	23	29.1
2025	29	29.1
2026	31	29.1

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

First to last qualifying date each year at Blue Hill Coop
Year	First date	Last date
1885	1885-06-16	1885-08-12
1886	1886-07-03	1886-08-28
1887	1887-05-20	1887-07-31
1888	1888-06-18	1888-08-05
1889	1889-05-09	1889-05-18
1890	1890-07-08	1890-08-05
1891	1891-06-11	1891-09-18
1892	1892-06-02	1892-08-11
1893	1893-06-05	1893-08-25
1894	1894-05-02	1894-09-09
1895	1895-05-10	1895-09-23
1896	1896-04-16	1896-09-11
1897	1897-07-05	1897-10-16
1898	1898-06-25	1898-09-04
1899	1899-05-01	1899-08-19
1900	1900-05-15	1900-09-12
1901	1901-06-26	1901-09-05
1902	1902-05-23	1902-09-01
1903	1903-05-18	1903-09-14
1904	1904-06-25	1904-07-19
1905	1905-06-16	1905-08-24
1906	1906-05-18	1906-09-19
1907	1907-06-18	1907-08-20
1908	1908-05-27	1908-08-14
1909	1909-06-22	1909-08-26
1910	1910-06-21	1910-07-27
1911	1911-05-22	1911-08-23
1912	1912-06-02	1912-09-11
1913	1913-06-16	1913-08-18
1914	1914-05-26	1914-09-23
1915	1915-06-14	1915-09-17
1916	1916-07-08	1916-08-23
1917	1917-07-22	1917-08-06
1918	1918-05-06	1918-08-23
1919	1919-05-05	1919-09-08
1920	1920-05-28	1920-08-16
1921	1921-05-21	1921-09-03
1922	1922-06-07	1922-08-18
1923	1923-05-26	1923-08-11
1924	1924-06-22	1924-09-02
1925	1925-06-03	1925-09-11
1926	1926-07-09	1926-09-25
1927	1927-04-20	1927-07-29
1928	1928-06-14	1928-10-12
1929	1929-04-07	1929-09-10
1930	1930-05-02	1930-09-16
1931	1931-05-28	1931-09-22
1932	1932-05-16	1932-07-28
1933	1933-06-08	1933-08-02
1934	1934-06-02	1934-08-10
1935	1935-06-29	1935-08-21
1936	1936-05-08	1936-09-08
1937	1937-05-31	1937-09-04
1938	1938-04-28	1938-08-16
1939	1939-05-28	1939-09-16
1940	1940-06-05	1940-07-30
1941	1941-04-20	1941-09-23
1942	1942-04-30	1942-09-02
1943	1943-06-03	1943-09-07
1944	1944-05-04	1944-09-02
1945	1945-06-14	1945-09-08
1946	1946-06-24	1946-08-09
1947	1947-06-28	1947-10-17
1948	1948-06-29	1948-09-18
1949	1949-05-05	1949-08-29
1950	1950-06-07	1950-07-31
1951	1951-05-15	1951-09-12
1952	1952-06-15	1952-09-13
1953	1953-05-11	1953-09-04
1954	1954-06-20	1954-10-12
1955	1955-05-25	1955-09-18
1956	1956-05-31	1956-09-05
1957	1957-05-09	1957-09-16
1958	1958-06-30	1958-09-26
1959	1959-05-12	1959-09-25
1960	1960-06-28	1960-09-09
1961	1961-05-16	1961-09-13
1962	1962-04-28	1962-08-07
1963	1963-05-10	1963-10-08
1964	1964-05-09	1964-08-31
1965	1965-05-11	1965-09-23
1966	1966-06-05	1966-09-03
1967	1967-06-11	1967-08-19
1968	1968-06-07	1968-08-26
1969	1969-06-14	1969-09-02
1970	1970-05-11	1970-09-26
1971	1971-06-08	1971-09-17
1972	1972-07-03	1972-08-27
1973	1973-06-09	1973-09-05
1974	1974-05-18	1974-08-29
1975	1975-05-21	1975-08-12
1976	1976-04-18	1976-08-23
1977	1977-05-18	1977-09-03
1978	1978-05-21	1978-08-18
1979	1979-05-10	1979-08-06
1980	1980-05-23	1980-09-23
1981	1981-05-26	1981-09-15
1982	1982-07-08	1982-07-27
1983	1983-06-13	1983-09-21
1984	1984-06-08	1984-08-17
1985	1985-05-12	1985-09-05
1986	1986-05-19	1986-07-27
1987	1987-05-31	1987-08-20
1988	1988-06-13	1988-08-16
1989	1989-06-03	1989-09-11
1990	1990-04-28	1990-08-28
1991	1991-04-09	1991-09-18
1992	1992-05-22	1992-08-28
1993	1993-05-12	1993-09-16
1994	1994-06-18	1994-08-06
1995	1995-06-01	1995-09-02
1996	1996-05-21	1996-08-27
1997	1997-06-11	1997-08-18
1998	1998-03-29	1998-09-07
1999	1999-05-31	1999-09-05
2000	2000-05-08	2000-06-28
2001	2001-05-03	2001-08-11
2002	2002-04-17	2002-09-11
2003	2003-06-25	2003-08-23
2004	2004-05-12	2004-08-31
2005	2005-04-21	2005-09-13
2006	2006-06-02	2006-08-04
2007	2007-05-25	2007-10-06
2008	2008-06-08	2008-09-06
2009	2009-04-26	2009-08-23
2010	2010-04-07	2010-09-25
2011	2011-05-28	2011-08-03
2012	2012-04-17	2012-09-01
2013	2013-05-31	2013-09-12
2014	2014-06-26	2014-09-29
2015	2015-05-11	2015-09-19
2016	2016-05-26	2016-09-15
2017	2017-04-17	2017-09-28
2018	2018-05-03	2018-09-07
2019	2019-06-29	2019-09-24
2020	2020-06-05	2020-08-26
2021	2021-05-23	2021-08-28
2022	2022-05-22	2022-09-05
2023	2023-04-14	2023-09-10
2024	2024-05-23	2024-08-29
2025	2025-06-06	2025-08-18
2026	2026-05-18	2026-08-21

Every Fixed Threshold

Fixed thresholds at Blue Hill Coop
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	142	44	2010	31
35 C (95 F): Days	57	11	1949	4
90 F (32.2 C): Days	136	23	1949	11
100 F (37.8 C): Days	3	2	1949	1
0 C (32 F): Ice days (max	142	74	1904	28
0 C (32 F): Frost days (min	140	157	1887	81
-10 C (14 F): Days with min	140	56	1904	26
-20 C (-4 F): Days with min	85	9	1979	2
20 C (68 F): Tropical nights (min	140	31	1988	16
25 C (77 F): Days with min	7	1	1917	1
10 mm (0.39 in): Days with 10 mm or more rain	140	55	1972	27
25 mm (0.98 in): Days with 25 mm or more rain	140	23	1953	11
50 mm (1.97 in): Days with 50 mm or more rain	123	8	1998	3
100 mm (3.94 in): Days with 100 mm or more rain	18	3	1955	1
200 mm (7.87 in): Days with 200 mm or more rain	1	1	1955	1
10 cm (3.9 in): Days with 10 cm or more snowfall	134	12	1916	5
25 cm (9.8 in): Days with 25 cm or more snowfall	77	5	2015	3
50 cm (19.7 in): Days with 50 cm or more snowfall	8	1	1960	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1885.

Download the Data

Data for Blue Hill Coop 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).

Blue Hill Coop Threshold Days by Year (USC00190736)

Key Facts for Blue Hill Coop Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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