Massabesic Lake Threshold Days by Year (USC00275211)

19 fixed thresholds counted per year at Massabesic Lake (USC00275211): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Massabesic Lake Thresholds

Massabesic Lake: days with a maximum temperature at or above 30 C (86 F) in 75 years, most in 1983 with 46.
Massabesic Lake: days with a maximum temperature at or below 0 C (32 F) in 75 years, most in 1970 with 63.
Massabesic Lake: days with a maximum temperature at or above 90 F (32.2 C) in 74 years, most in 1988 with 30.
Massabesic Lake: nights with a minimum temperature at or below 0 C (32 F) in 74 years, most in 2000 with 206.
19 fixed thresholds have at least one qualifying day at Massabesic Lake.

Days at or above 30 C (86 F)

75 years with a qualifying day

Days per year at Massabesic Lake with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 46 in 1983.

Days at or above 30 C (86 F) per year at Massabesic Lake
Year	Days	Decade average
1942	22	25.1
1943	24	25.1
1944	34	25.1
1945	18	25.1
1946	18	25.1
1947	24	25.1
1948	21	25.1
1949	40	25.1
1950	16	22.9
1951	21	22.9
1952	35	22.9
1953	30	22.9
1954	11	22.9
1955	44	22.9
1956	15	22.9
1957	15	22.9
1958	10	22.9
1959	32	22.9
1960	9	18.6
1961	22	18.6
1962	10	18.6
1963	21	18.6
1964	19	18.6
1965	25	18.6
1966	28	18.6
1967	12	18.6
1968	17	18.6
1969	23	18.6
1970	27	24.8
1971	25	24.8
1972	15	24.8
1973	31	24.8
1974	25	24.8
1975	27	24.8
1976	24	24.8
1977	23	24.8
1978	26	24.8
1981	21	25.6
1983	46	25.6
1985	16	25.6
1986	11	25.6
1987	19	25.6
1988	40	25.6
1989	26	25.6
1990	26	29.1
1992	13	29.1
1993	42	29.1
1996	28	29.1
1997	25	29.1
1998	28	29.1
1999	42	29.1
2000	20	23.6
2001	40	23.6
2002	33	23.6
2004	10	23.6
2005	33	23.6
2008	14	23.6
2009	15	23.6
2010	46	26.5
2011	26	26.5
2012	29	26.5
2013	23	26.5
2014	18	26.5
2015	28	26.5
2016	37	26.5
2017	17	26.5
2018	27	26.5
2019	14	26.5
2020	33	24.7
2021	24	24.7
2022	26	24.7
2023	15	24.7
2024	26	24.7
2025	26	24.7
2026	23	24.7

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

First to last qualifying date each year at Massabesic Lake
Year	First date	Last date
1942	1942-05-01	1942-09-18
1943	1943-05-18	1943-08-24
1944	1944-05-05	1944-09-16
1945	1945-04-14	1945-09-26
1946	1946-05-26	1946-09-20
1947	1947-05-25	1947-09-13
1948	1948-06-25	1948-09-19
1949	1949-05-05	1949-08-29
1950	1950-07-08	1950-08-29
1951	1951-05-16	1951-09-13
1952	1952-06-15	1952-09-13
1953	1953-05-10	1953-09-06
1954	1954-06-01	1954-08-26
1955	1955-05-29	1955-09-18
1956	1956-05-31	1956-08-18
1957	1957-06-11	1957-09-16
1958	1958-06-30	1958-08-31
1959	1959-05-12	1959-09-24
1960	1960-06-17	1960-09-08
1961	1961-05-14	1961-09-12
1962	1962-04-27	1962-08-06
1963	1963-06-05	1963-10-07
1964	1964-05-07	1964-09-11
1965	1965-05-10	1965-09-24
1966	1966-05-28	1966-09-03
1967	1967-06-05	1967-08-19
1968	1968-06-07	1968-08-26
1969	1969-04-29	1969-09-02
1970	1970-05-11	1970-09-26
1971	1971-06-08	1971-09-10
1972	1972-05-29	1972-08-27
1973	1973-04-23	1973-09-05
1974	1974-05-16	1974-09-14
1975	1975-05-21	1975-08-15
1976	1976-04-18	1976-09-15
1977	1977-04-23	1977-09-03
1978	1978-05-21	1978-09-22
1981	1981-05-26	1981-08-23
1983	1983-06-13	1983-09-21
1985	1985-05-12	1985-09-21
1986	1986-05-20	1986-07-27
1987	1987-05-31	1987-08-20
1988	1988-05-29	1988-08-29
1989	1989-05-21	1989-09-11
1990	1990-04-28	1990-09-03
1992	1992-05-22	1992-08-25
1993	1993-05-12	1993-09-16
1996	1996-05-21	1996-09-07
1997	1997-06-11	1997-08-18
1998	1998-03-29	1998-09-07
1999	1999-05-31	1999-09-10
2000	2000-05-08	2000-09-03
2001	2001-04-25	2001-09-11
2002	2002-04-17	2002-09-11
2004	2004-04-20	2004-08-31
2005	2005-04-21	2005-09-15
2008	2008-06-08	2008-09-06
2009	2009-04-27	2009-08-24
2010	2010-04-08	2010-09-25
2011	2011-05-28	2011-09-06
2012	2012-04-17	2012-09-01
2013	2013-05-31	2013-09-12
2014	2014-06-26	2014-09-07
2015	2015-05-11	2015-09-20
2016	2016-05-26	2016-09-10
2017	2017-05-18	2017-09-28
2018	2018-05-03	2018-09-07
2019	2019-06-29	2019-09-24
2020	2020-05-28	2020-08-26
2021	2021-05-23	2021-08-28
2022	2022-05-14	2022-09-10
2023	2023-04-14	2023-09-08
2024	2024-05-23	2024-08-29
2025	2025-06-06	2025-08-18
2026	2026-05-20	2026-08-10

Every Fixed Threshold

Fixed thresholds at Massabesic Lake
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	75	46	1983	23
35 C (95 F): Days	35	8	1949	1
40 C (104 F): Days	1	1	1988	1
90 F (32.2 C): Days	74	30	1988	7
100 F (37.8 C): Days	2	1	1988	1
0 C (32 F): Ice days (max	75	63	1970	36
0 C (32 F): Frost days (min	74	206	2000	93
-10 C (14 F): Days with min	74	94	2001	37
-20 C (-4 F): Days with min	68	42	1948	6
-30 C (-22 F): Days with min	17	8	1948	2
-40 C (-40 F): Days with min	1	1	1943	1
20 C (68 F): Tropical nights (min	62	20	2013	11
25 C (77 F): Days with min	4	2	2002	1
10 mm (0.39 in): Days with 10 mm or more rain	74	49	2023	25
25 mm (0.98 in): Days with 25 mm or more rain	74	16	2023	3
50 mm (1.97 in): Days with 50 mm or more rain	51	5	1954	1
100 mm (3.94 in): Days with 100 mm or more rain	6	2	1990	1
10 cm (3.9 in): Days with 10 cm or more snowfall	53	9	1967	3
25 cm (9.8 in): Days with 25 cm or more snowfall	20	3	1969	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1942.

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Data for Massabesic Lake 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 2026-10-12. Last revised 12 October 2026 (2026-10-12).

Massabesic Lake Threshold Days by Year (USC00275211)

Key Facts for Massabesic Lake Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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