Cambridge Threshold Days by Year (USC00211227)

19 fixed thresholds counted per year at Cambridge (USC00211227): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Cambridge Thresholds

Cambridge: days with a maximum temperature at or above 30 C (86 F) in 86 years, most in 1933 with 65.
Cambridge: days with a maximum temperature at or below 0 C (32 F) in 86 years, most in 1955 with 117.
Cambridge: nights with a minimum temperature at or below 0 C (32 F) in 84 years, most in 1893 with 195.
Cambridge: nights with a minimum temperature at or below -10 C (14 F) in 84 years, most in 1955 with 117.
19 fixed thresholds have at least one qualifying day at Cambridge.

Days at or above 30 C (86 F)

86 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 65 in 1933.

Days at or above 30 C (86 F) per year at Cambridge
Year	Days	Decade average
1893	37	30.5
1894	47	30.5
1895	12	30.5
1896	26	30.5
1933	65	51.3
1934	63	51.3
1935	39	51.3
1936	61	51.3
1937	48	51.3
1938	36	51.3
1939	47	51.3
1940	39	26.1
1941	32	26.1
1942	10	26.1
1943	37	26.1
1944	17	26.1
1945	13	26.1
1946	14	26.1
1947	34	26.1
1948	30	26.1
1949	35	26.1
1950	17	19.9
1951	8	19.9
1952	24	19.9
1953	25	19.9
1954	12	19.9
1955	32	19.9
1956	10	19.9
1957	15	19.9
1958	16	19.9
1959	40	19.9
1960	26	21.3
1961	27	21.3
1962	13	21.3
1963	20	21.3
1964	31	21.3
1965	9	21.3
1966	32	21.3
1967	11	21.3
1968	18	21.3
1969	26	21.3
1970	37	23.9
1971	13	23.9
1972	16	23.9
1973	20	23.9
1974	19	23.9
1975	31	23.9
1976	45	23.9
1977	20	23.9
1978	25	23.9
1979	13	23.9
1980	32	24.7
1981	9	24.7
1982	12	24.7
1983	31	24.7
1984	9	24.7
1988	56	24.7
1989	24	24.7
1990	13	10.3
1991	16	10.3
1992	9	10.3
1993	7	10.3
1994	6	10.3
1996	11	10.3
1997	7	10.3
1998	10	10.3
1999	14	10.3
2000	7	17
2001	14	17
2006	23	17
2007	42	17
2008	6	17
2009	10	17
2010	16	17
2011	13	17
2012	37	17
2013	22	17
2014	5	17
2015	9	17
2020	27	33.3
2021	45	33.3
2022	22	33.3
2023	45	33.3
2024	29	33.3
2025	29	33.3
2026	36	33.3

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
1893	1893-06-12	1893-09-11
1894	1894-05-15	1894-09-28
1895	1895-05-28	1895-09-19
1896	1896-05-06	1896-08-14
1933	1933-05-17	1933-09-08
1934	1934-04-28	1934-08-19
1935	1935-07-02	1935-09-24
1936	1936-05-16	1936-09-23
1937	1937-05-29	1937-09-23
1938	1938-06-14	1938-10-10
1939	1939-05-05	1939-09-16
1940	1940-05-12	1940-09-19
1941	1941-05-19	1941-09-21
1942	1942-06-05	1942-08-30
1943	1943-06-14	1943-08-31
1944	1944-05-29	1944-09-17
1945	1945-06-22	1945-09-07
1946	1946-06-23	1946-08-17
1947	1947-06-26	1947-10-21
1948	1948-05-20	1948-09-17
1949	1949-05-03	1949-08-26
1950	1950-05-23	1950-08-16
1951	1951-07-15	1951-08-01
1952	1952-04-28	1952-09-13
1953	1953-05-29	1953-10-02
1954	1954-06-09	1954-09-01
1955	1955-05-02	1955-09-18
1956	1956-06-09	1956-08-14
1957	1957-06-20	1957-08-31
1958	1958-05-13	1958-08-29
1959	1959-05-01	1959-09-08
1960	1960-06-27	1960-09-06
1961	1961-05-11	1961-09-09
1962	1962-04-25	1962-08-27
1963	1963-05-07	1963-07-26
1964	1964-05-18	1964-09-02
1965	1965-06-27	1965-08-14
1966	1966-05-25	1966-08-31
1967	1967-07-10	1967-08-24
1968	1968-06-04	1968-08-23
1969	1969-05-27	1969-10-04
1970	1970-04-29	1970-09-05
1971	1971-06-12	1971-09-10
1972	1972-05-17	1972-08-29
1973	1973-06-09	1973-08-28
1974	1974-06-28	1974-08-25
1975	1975-05-20	1975-08-24
1976	1976-06-06	1976-09-07
1977	1977-05-24	1977-08-26
1978	1978-05-25	1978-09-10
1979	1979-05-17	1979-09-04
1980	1980-04-21	1980-09-08
1981	1981-07-05	1981-09-10
1982	1982-07-03	1982-08-05
1983	1983-06-25	1983-09-08
1984	1984-06-26	1984-09-19
1988	1988-05-20	1988-09-11
1989	1989-06-19	1989-08-13
1990	1990-05-07	1990-09-12
1991	1991-04-06	1991-08-30
1992	1992-05-01	1992-08-09
1993	1993-06-11	1993-08-27
1994	1994-05-19	1994-09-10
1996	1996-06-12	1996-09-05
1997	1997-06-23	1997-08-02
1998	1998-05-14	1998-09-19
1999	1999-06-24	1999-08-27
2000	2000-05-05	2000-08-14
2001	2001-05-15	2001-08-08
2006	2006-05-28	2006-08-05
2007	2007-05-11	2007-09-07
2008	2008-07-07	2008-08-29
2009	2009-06-18	2009-08-14
2010	2010-06-17	2010-08-30
2011	2011-06-06	2011-09-01
2012	2012-05-18	2012-09-11
2013	2013-06-20	2013-09-09
2014	2014-06-28	2014-08-08
2015	2015-05-28	2015-08-31
2020	2020-06-02	2020-08-27
2021	2021-05-02	2021-09-20
2022	2022-06-15	2022-09-09
2023	2023-04-14	2023-10-03
2024	2024-05-13	2024-09-29
2025	2025-05-07	2025-10-05
2026	2026-05-16	2026-10-11

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	86	65	1933	36
35 C (95 F): Days	47	17	1934	3
40 C (104 F): Days	2	6	1936	6
90 F (32.2 C): Days	82	41	1933	12
100 F (37.8 C): Days	12	11	1936	1
0 C (32 F): Ice days (max	86	117	1955	46
0 C (32 F): Frost days (min	84	195	1893	104
-10 C (14 F): Days with min	84	117	1955	48
-20 C (-4 F): Days with min	84	60	1893	16
-30 C (-22 F): Days with min	71	19	1936	3
-40 C (-40 F): Days with min	3	1	1935	1
20 C (68 F): Tropical nights (min	77	19	1937	10
25 C (77 F): Days with min	7	4	1936	1
10 mm (0.39 in): Days with 10 mm or more rain	82	35	1965	11
25 mm (0.98 in): Days with 25 mm or more rain	81	15	1957	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	3	1	1968	1
10 cm (3.9 in): Days with 10 cm or more snowfall	70	8	1969	1
25 cm (9.8 in): Days with 25 cm or more snowfall	15	2	1991	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1893.

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 (USC00211227)

Key Facts for Cambridge Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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