Lowell Threshold Days by Year

18 fixed thresholds counted per year at Lowell (USC00194313): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Lowell Thresholds

Lowell: days with a maximum temperature at or above 30 C (86 F) in 114 years, most in 1959 with 75.
Lowell: days with a maximum temperature at or below 0 C (32 F) in 114 years, most in 1904 with 62.
Lowell: days with a maximum temperature at or above 90 F (32.2 C) in 113 years, most in 1955 with 46.
Lowell: days with 10 mm (0.39 in) or more of precipitation in 109 years, most in 1983 with 56.
18 fixed thresholds have at least one qualifying day at Lowell.

Days at or above 30 C (86 F)

114 years with a qualifying day

Days per year at Lowell with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 75 in 1959.

Days at or above 30 C (86 F) per year at Lowell
Year	Days	Decade average
1889	9	9
1890	15	22.4
1891	16	22.4
1892	31	22.4
1893	23	22.4
1894	26	22.4
1895	25	22.4
1896	23	22.4
1897	13	22.4
1898	27	22.4
1899	25	22.4
1900	37	26.3
1901	26	26.3
1902	14	26.3
1903	22	26.3
1904	13	26.3
1905	21	26.3
1906	32	26.3
1907	32	26.3
1908	40	26.3
1909	26	26.3
1910	27	23.1
1911	38	23.1
1912	23	23.1
1913	29	23.1
1914	25	23.1
1915	12	23.1
1916	18	23.1
1917	12	23.1
1918	25	23.1
1919	22	23.1
1920	14	25.1
1921	37	25.1
1922	29	25.1
1923	32	25.1
1924	33	25.1
1925	33	25.1
1926	13	25.1
1927	10	25.1
1928	21	25.1
1929	29	25.1
1930	29	25.1
1931	30	25.1
1932	14	25.1
1933	21	25.1
1934	22	25.1
1935	23	25.1
1936	20	25.1
1937	32	25.1
1938	24	25.1
1939	36	25.1
1940	19	37.5
1941	36	37.5
1942	23	37.5
1943	29	37.5
1944	40	37.5
1945	20	37.5
1946	35	37.5
1947	51	37.5
1948	51	37.5
1949	71	37.5
1950	46	52
1951	42	52
1952	62	52
1953	54	52
1954	35	52
1955	64	52
1956	46	52
1957	53	52
1958	43	52
1959	75	52
1960	47	37.8
1961	42	37.8
1962	16	37.8
1963	37	37.8
1964	29	37.8
1965	43	37.8
1966	46	37.8
1967	39	37.8
1968	39	37.8
1969	40	37.8
1990	31	36.8
1991	44	36.8
1992	29	36.8
1993	42	36.8
1994	42	36.8
1995	47	36.8
1996	31	36.8
1997	31	36.8
1998	41	36.8
1999	30	36.8
2000	23	39.8
2001	53	39.8
2002	50	39.8
2005	51	39.8
2006	26	39.8
2007	53	39.8
2008	32	39.8
2009	30	39.8
2010	60	43.3
2011	40	43.3
2012	38	43.3
2013	34	43.3
2014	27	43.3
2015	48	43.3
2016	56	43.3
2017	40	43.3
2018	51	43.3
2019	39	43.3
2020	53	39.6
2022	47	39.6
2024	44	39.6
2025	47	39.6
2026	7	39.6

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

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

Every Fixed Threshold

Fixed thresholds at Lowell
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	114	75	1959	7
35 C (95 F): Days	82	18	1955	1
90 F (32.2 C): Days	113	46	1955	2
100 F (37.8 C): Days	13	5	1911	1
0 C (32 F): Ice days (max	114	62	1904	25
0 C (32 F): Frost days (min	100	168	1993	87
-10 C (14 F): Days with min	100	67	1904	36
-20 C (-4 F): Days with min	70	17	1918	3
-30 C (-22 F): Days with min	4	1	1904	1
20 C (68 F): Tropical nights (min	98	27	1943	15
25 C (77 F): Days with min	3	4	1911	1
10 mm (0.39 in): Days with 10 mm or more rain	109	56	1983	15
25 mm (0.98 in): Days with 25 mm or more rain	109	27	2011	2
50 mm (1.97 in): Days with 50 mm or more rain	89	10	1900	1
100 mm (3.94 in): Days with 100 mm or more rain	19	2	1904	1
10 cm (3.9 in): Days with 10 cm or more snowfall	58	15	1956	6
25 cm (9.8 in): Days with 25 cm or more snowfall	31	4	1945	1
50 cm (19.7 in): Days with 50 cm or more snowfall	2	1	2013	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1889.

Download the Data

Data for Lowell 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 2026-10-16 (16 October 2026). Threshold counts are computed by this site.

Data as of 2026-10-16. Last revised 16 October 2026 (2026-10-16).

Lowell Threshold Days by Year

Key Facts for Lowell Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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