Cambridge Threshold Days by Year (USC00101408)

19 fixed thresholds counted per year at Cambridge (USC00101408): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Cambridge Thresholds

Cambridge: nights with a minimum temperature at or below 0 C (32 F) in 115 years, most in 1964 with 213.
Cambridge: nights with a minimum temperature at or below -10 C (14 F) in 115 years, most in 1985 with 93.
Cambridge: days with 10 mm (0.39 in) or more of precipitation in 109 years, most in 1940 with 31.
Cambridge: days with a maximum temperature at or above 30 C (86 F) in 106 years, most in 1934 with 109.
19 fixed thresholds have at least one qualifying day at Cambridge.

Days at or above 30 C (86 F)

106 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 109 in 1934.

Days at or above 30 C (86 F) per year at Cambridge
Year	Days	Decade average
1895	67	71
1896	68	71
1897	76	71
1898	73	71
1904	75	68
1905	69	68
1906	82	68
1907	53	68
1908	64	68
1909	65	68
1910	76	69.8
1912	44	69.8
1913	60	69.8
1914	69	69.8
1915	63	69.8
1916	63	69.8
1917	86	69.8
1918	79	69.8
1919	88	69.8
1920	69	78.8
1921	73	78.8
1927	89	78.8
1928	85	78.8
1929	78	78.8
1930	82	87.1
1931	86	87.1
1932	77	87.1
1933	81	87.1
1934	109	87.1
1935	85	87.1
1936	98	87.1
1937	75	87.1
1938	90	87.1
1939	88	87.1
1940	95	78.1
1941	60	78.1
1942	67	78.1
1943	82	78.1
1944	71	78.1
1945	88	78.1
1947	82	78.1
1948	74	78.1
1949	84	78.1
1950	74	68.9
1951	56	68.9
1952	73	68.9
1953	65	68.9
1954	67	68.9
1955	71	68.9
1956	70	68.9
1957	73	68.9
1958	81	68.9
1959	59	68.9
1960	70	67.4
1961	75	67.4
1962	54	67.4
1963	67	67.4
1964	49	67.4
1965	48	67.4
1966	83	67.4
1967	89	67.4
1968	60	67.4
1969	79	67.4
1970	78	67.6
1971	64	67.6
1972	70	67.6
1973	78	67.6
1974	79	67.6
1975	56	67.6
1976	51	67.6
1977	71	67.6
1978	53	67.6
1979	76	67.6
1980	47	71.4
1981	76	71.4
1984	72	71.4
1985	61	71.4
1986	81	71.4
1987	84	71.4
1988	92	71.4
1989	58	71.4
1990	80	66.5
1991	77	66.5
1992	74	66.5
1993	35	66.5
2001	82	81.1
2002	79	81.1
2003	97	81.1
2004	73	81.1
2005	67	81.1
2006	87	81.1
2007	83	81.1
2008	78	81.1
2009	84	81.1
2010	68	80.5
2011	80	80.5
2012	93	80.5
2013	94	80.5
2014	85	80.5
2015	97	80.5
2016	80	80.5
2017	84	80.5
2018	62	80.5
2019	62	80.5
2020	80	77.5
2021	75	77.5

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
1895	1895-04-23	1895-09-18
1896	1896-05-28	1896-09-06
1897	1897-04-17	1897-09-26
1898	1898-04-25	1898-09-26
1904	1904-06-13	1904-09-17
1905	1905-05-16	1905-09-23
1906	1906-04-21	1906-10-09
1907	1907-05-31	1907-10-12
1908	1908-06-14	1908-09-30
1909	1909-05-10	1909-09-24
1910	1910-04-24	1910-10-11
1912	1912-06-05	1912-08-27
1913	1913-05-22	1913-09-19
1914	1914-05-14	1914-09-25
1915	1915-04-28	1915-09-21
1916	1916-06-08	1916-09-22
1917	1917-05-14	1917-10-03
1918	1918-05-03	1918-09-30
1919	1919-05-18	1919-09-25
1920	1920-06-20	1920-10-05
1921	1921-06-03	1921-10-05
1927	1927-04-25	1927-09-23
1928	1928-05-06	1928-09-29
1929	1929-05-20	1929-09-17
1930	1930-05-28	1930-09-22
1931	1931-05-07	1931-09-07
1932	1932-05-13	1932-10-03
1933	1933-06-12	1933-10-09
1934	1934-04-13	1934-10-12
1935	1935-05-22	1935-10-03
1936	1936-04-18	1936-10-11
1937	1937-06-03	1937-09-18
1938	1938-05-24	1938-09-27
1939	1939-04-28	1939-09-27
1940	1940-05-10	1940-09-13
1941	1941-05-12	1941-08-29
1942	1942-05-22	1942-10-09
1943	1943-06-18	1943-10-05
1944	1944-05-15	1944-09-27
1945	1945-05-05	1945-10-17
1947	1947-05-02	1947-09-26
1948	1948-05-28	1948-09-15
1949	1949-05-10	1949-09-28
1950	1950-05-15	1950-09-09
1951	1951-06-30	1951-09-20
1952	1952-06-05	1952-09-25
1953	1953-06-29	1953-09-21
1954	1954-05-09	1954-09-26
1955	1955-06-07	1955-09-13
1956	1956-05-17	1956-10-06
1957	1957-06-01	1957-09-30
1958	1958-05-18	1958-09-11
1959	1959-05-13	1959-09-12
1960	1960-06-02	1960-09-28
1961	1961-05-25	1961-08-30
1962	1962-06-18	1962-09-26
1963	1963-05-21	1963-09-30
1964	1964-05-16	1964-09-13
1965	1965-06-06	1965-08-20
1966	1966-05-03	1966-09-24
1967	1967-05-21	1967-09-28
1968	1968-05-28	1968-09-11
1969	1969-05-07	1969-09-12
1970	1970-06-02	1970-09-03
1971	1971-05-26	1971-09-12
1972	1972-05-28	1972-09-05
1973	1973-05-13	1973-09-13
1974	1974-06-10	1974-09-25
1975	1975-05-14	1975-09-23
1976	1976-05-13	1976-09-10
1977	1977-04-23	1977-09-11
1978	1978-06-04	1978-09-26
1979	1979-05-22	1979-10-07
1980	1980-05-20	1980-09-09
1981	1981-06-24	1981-09-19
1984	1984-05-29	1984-09-19
1985	1985-05-23	1985-08-30
1986	1986-05-25	1986-09-08
1987	1987-04-26	1987-10-02
1988	1988-05-12	1988-10-09
1989	1989-06-05	1989-09-29
1990	1990-06-09	1990-09-30
1991	1991-06-10	1991-09-28
1992	1992-05-05	1992-10-01
1993	1993-05-11	1993-10-04
2001	2001-05-12	2001-09-24
2002	2002-05-19	2002-09-24
2003	2003-05-23	2003-10-06
2004	2004-05-01	2004-09-29
2005	2005-05-28	2005-09-20
2006	2006-05-14	2006-09-27
2007	2007-05-08	2007-09-16
2008	2008-05-16	2008-10-01
2009	2009-04-21	2009-09-27
2010	2010-05-15	2010-10-03
2011	2011-06-21	2011-10-01
2012	2012-04-23	2012-09-20
2013	2013-05-06	2013-09-16
2014	2014-05-23	2014-09-25
2015	2015-05-29	2015-09-29
2016	2016-06-01	2016-09-30
2017	2017-05-30	2017-09-12
2018	2018-06-03	2018-09-07
2019	2019-06-12	2019-09-15
2020	2020-05-29	2020-09-20
2021	2021-05-31	2021-09-10

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	106	109	1934	75
35 C (95 F): Days	105	66	1934	44
40 C (104 F): Days	68	21	1934	3
45 C (113 F): Days	2	3	1934	1
90 F (32.2 C): Days	106	91	1934	64
100 F (37.8 C): Days	101	44	1934	20
110 F (43.3 C): Days	10	5	1934	3
0 C (32 F): Ice days (max	106	84	1985	35
0 C (32 F): Frost days (min	115	213	1964	160
-10 C (14 F): Days with min	115	93	1985	35
-20 C (-4 F): Days with min	97	43	1985	1
-30 C (-22 F): Days with min	37	9	1949	1
20 C (68 F): Tropical nights (min	71	10	2006	5
25 C (77 F): Days with min	3	1	2003	1
10 mm (0.39 in): Days with 10 mm or more rain	109	31	1940	20
25 mm (0.98 in): Days with 25 mm or more rain	78	5	1916	3
50 mm (1.97 in): Days with 50 mm or more rain	3	1	1952	1
10 cm (3.9 in): Days with 10 cm or more snowfall	63	16	1916	2
25 cm (9.8 in): Days with 25 cm or more snowfall	21	3	1949	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1895.

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 2025-12-31. Last revised 31 December 2025 (2025-12-31).

Cambridge Threshold Days by Year (USC00101408)

Key Facts for Cambridge Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

Related