Cambridge Threshold Days by Year (USC00251415)

21 fixed thresholds counted per year at Cambridge (USC00251415): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Cambridge Thresholds

Cambridge: days with 10 mm (0.39 in) or more of precipitation in 103 years, most in 1993 with 36.
Cambridge: days with 25 mm (0.98 in) or more of precipitation in 102 years, most in 1944 with 13.
Cambridge: days with a maximum temperature at or above 30 C (86 F) in 88 years, most in 1953 with 119.
Cambridge: days with a maximum temperature at or above 35 C (95 F) in 88 years, most in 1983 with 64.
21 fixed thresholds have at least one qualifying day at Cambridge.

Days at or above 30 C (86 F)

88 years with a qualifying day

Days per year at Cambridge with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 119 in 1953.

Days at or above 30 C (86 F) per year at Cambridge
Year	Days	Decade average
1904	81	83.7
1908	78	83.7
1909	92	83.7
1912	74	67.7
1913	98	67.7
1915	31	67.7
1941	80	79.7
1942	79	79.7
1943	80	79.7
1944	80	79.7
1945	78	79.7
1946	79	79.7
1949	82	79.7
1950	78	91.9
1951	60	91.9
1952	107	91.9
1953	119	91.9
1954	115	91.9
1955	97	91.9
1956	117	91.9
1957	64	91.9
1958	74	91.9
1959	88	91.9
1960	85	76.6
1961	72	76.6
1962	72	76.6
1963	100	76.6
1964	81	76.6
1965	57	76.6
1966	82	76.6
1967	65	76.6
1968	88	76.6
1969	64	76.6
1970	93	84.5
1971	82	84.5
1972	75	84.5
1973	72	84.5
1974	79	84.5
1975	83	84.5
1976	94	84.5
1977	85	84.5
1978	97	84.5
1979	85	84.5
1980	100	85
1981	84	85
1982	69	85
1983	103	85
1984	97	85
1985	85	85
1986	79	85
1987	76	85
1988	87	85
1989	70	85
1990	76	61.6
1991	80	61.6
1992	48	61.6
1993	40	61.6
1994	62	61.6
1995	72	61.6
1996	44	61.6
1997	68	61.6
1998	77	61.6
1999	49	61.6
2000	82	69.4
2001	76	69.4
2002	88	69.4
2005	70	69.4
2006	85	69.4
2007	65	69.4
2008	50	69.4
2009	39	69.4
2010	71	74.7
2011	72	74.7
2012	97	74.7
2013	75	74.7
2014	60	74.7
2015	71	74.7
2016	68	74.7
2017	76	74.7
2018	83	74.7
2019	74	74.7
2020	104	91.3
2021	87	91.3
2022	102	91.3
2023	79	91.3
2024	81	91.3
2025	82	91.3
2026	104	91.3

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

First to last qualifying date each year at Cambridge
Year	First date	Last date
1904	1904-05-10	1904-10-07
1908	1908-04-12	1908-10-16
1909	1909-05-04	1909-10-06
1912	1912-05-02	1912-10-04
1913	1913-04-20	1913-10-13
1915	1915-04-13	1915-09-22
1941	1941-05-13	1941-09-20
1942	1942-04-04	1942-10-08
1943	1943-03-29	1943-10-28
1944	1944-05-12	1944-10-13
1945	1945-04-09	1945-10-18
1946	1946-03-31	1946-09-26
1949	1949-04-24	1949-09-25
1950	1950-04-21	1950-10-31
1951	1951-04-28	1951-10-11
1952	1952-04-07	1952-10-30
1953	1953-04-21	1953-10-18
1954	1954-04-05	1954-10-09
1955	1955-04-26	1955-10-19
1956	1956-03-25	1956-10-12
1957	1957-06-04	1957-09-30
1958	1958-05-11	1958-10-19
1959	1959-04-06	1959-10-25
1960	1960-03-28	1960-10-12
1961	1961-04-20	1961-10-18
1962	1962-04-20	1962-10-15
1963	1963-03-28	1963-10-15
1964	1964-04-16	1964-10-16
1965	1965-04-22	1965-10-10
1966	1966-05-03	1966-10-13
1967	1967-03-23	1967-10-12
1968	1968-03-30	1968-10-30
1969	1969-05-26	1969-09-30
1970	1970-04-27	1970-10-05
1971	1971-06-15	1971-10-10
1972	1972-03-06	1972-10-10
1973	1973-05-18	1973-09-23
1974	1974-04-26	1974-10-10
1975	1975-04-26	1975-10-22
1976	1976-05-04	1976-10-14
1977	1977-04-09	1977-10-26
1978	1978-03-31	1978-10-20
1979	1979-04-19	1979-10-08
1980	1980-04-20	1980-10-09
1981	1981-04-25	1981-09-30
1982	1982-04-11	1982-10-05
1983	1983-05-24	1983-10-27
1984	1984-05-10	1984-10-03
1985	1985-04-15	1985-09-19
1986	1986-03-29	1986-09-22
1987	1987-04-18	1987-10-05
1988	1988-03-28	1988-10-15
1989	1989-03-11	1989-10-26
1990	1990-04-23	1990-11-16
1991	1991-04-06	1991-10-23
1992	1992-04-06	1992-10-22
1993	1993-05-15	1993-10-07
1994	1994-04-18	1994-09-30
1995	1995-06-07	1995-10-17
1996	1996-04-03	1996-10-14
1997	1997-05-17	1997-10-07
1998	1998-05-14	1998-09-29
1999	1999-06-10	1999-09-26
2000	2000-04-14	2000-10-02
2001	2001-04-29	2001-10-03
2002	2002-04-15	2002-10-01
2005	2005-05-11	2005-10-19
2006	2006-04-14	2006-11-09
2007	2007-04-30	2007-10-07
2008	2008-04-16	2008-09-29
2009	2009-04-24	2009-09-08
2010	2010-03-31	2010-10-16
2011	2011-04-03	2011-10-05
2012	2012-03-18	2012-10-16
2013	2013-04-29	2013-09-27
2014	2014-04-10	2014-10-28
2015	2015-03-16	2015-10-19
2016	2016-05-07	2016-10-28
2017	2017-03-17	2017-09-24
2018	2018-04-30	2018-10-04
2019	2019-04-21	2019-10-18
2020	2020-04-28	2020-11-07
2021	2021-04-05	2021-09-29
2022	2022-04-13	2022-10-24
2023	2023-04-12	2023-10-21
2024	2024-04-14	2024-10-11
2025	2025-03-29	2025-10-12
2026	2026-03-20	2026-09-19

Every Fixed Threshold

Fixed thresholds at Cambridge
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	88	119	1953	104
35 C (95 F): Days	88	64	1983	29
40 C (104 F): Days	53	25	1954	2
45 C (113 F): Days	1	1	1954	1
90 F (32.2 C): Days	88	95	1953	74
100 F (37.8 C): Days	77	42	1954	6
110 F (43.3 C): Days	6	6	1954	1
0 C (32 F): Ice days (max	88	53	1978	7
0 C (32 F): Frost days (min	88	181	2013	91
-10 C (14 F): Days with min	88	78	2022	21
-20 C (-4 F): Days with min	85	18	1963	3
-30 C (-22 F): Days with min	13	7	1989	2
20 C (68 F): Tropical nights (min	87	34	1955	16
25 C (77 F): Days with min	12	2	2002	1
10 mm (0.39 in): Days with 10 mm or more rain	103	36	1993	16
25 mm (0.98 in): Days with 25 mm or more rain	102	13	1944	4
50 mm (1.97 in): Days with 50 mm or more rain	64	4	2019	1
100 mm (3.94 in): Days with 100 mm or more rain	3	2	2019	2
10 cm (3.9 in): Days with 10 cm or more snowfall	69	6	1929	2
25 cm (9.8 in): Days with 25 cm or more snowfall	12	2	1973	1
50 cm (19.7 in): Days with 50 cm or more snowfall	1	1	1984	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1904.

Download the Data

Data for Cambridge 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).

Cambridge Threshold Days by Year (USC00251415)

Key Facts for Cambridge Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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