Cambridge Threshold Days by Year (USC00191097)

14 fixed thresholds counted per year at Cambridge (USC00191097): 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 18 years, most in 1900 with 44.
Cambridge: days with a maximum temperature at or below 0 C (32 F) in 18 years, most in 1904 with 53.
Cambridge: nights with a minimum temperature at or below 0 C (32 F) in 18 years, most in 1904 with 143.
Cambridge: nights with a minimum temperature at or below -10 C (14 F) in 18 years, most in 1904 with 57.
14 fixed thresholds have at least one qualifying day at Cambridge.

Days at or above 30 C (86 F)

18 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 44 in 1900.

Days at or above 30 C (86 F) per year at Cambridge
Year	Days	Decade average
1886	3	4.8
1887	11	4.8
1888	2	4.8
1889	3	4.8
1891	6	26.6
1892	31	26.6
1893	27	26.6
1894	38	26.6
1895	26	26.6
1896	27	26.6
1897	19	26.6
1898	29	26.6
1899	36	26.6
1900	44	23
1903	17	23
1904	12	23
1905	26	23
1906	16	23

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
1886	1886-07-03	1886-07-07
1887	1887-05-20	1887-07-29
1888	1888-06-18	1888-06-23
1889	1889-05-09	1889-05-18
1891	1891-06-11	1891-08-12
1892	1892-06-02	1892-08-20
1893	1893-05-24	1893-08-29
1894	1894-05-02	1894-09-10
1895	1895-05-04	1895-09-26
1896	1896-04-16	1896-09-11
1897	1897-06-25	1897-10-16
1898	1898-06-09	1898-09-07
1899	1899-04-25	1899-09-01
1900	1900-05-14	1900-09-12
1903	1903-05-18	1903-09-15
1904	1904-05-26	1904-09-03
1905	1905-06-14	1905-08-24
1906	1906-05-18	1906-09-19

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	18	44	1900	16
35 C (95 F): Days	6	9	1900	9
90 F (32.2 C): Days	17	20	1900	4
100 F (37.8 C): Days	1	1	1894	1
0 C (32 F): Ice days (max	18	53	1904	24
0 C (32 F): Frost days (min	18	143	1904	121
-10 C (14 F): Days with min	18	57	1904	27
-20 C (-4 F): Days with min	13	6	1888	4
20 C (68 F): Tropical nights (min	18	20	1887	18
25 C (77 F): Days with min	1	1	1900	1
10 mm (0.39 in): Days with 10 mm or more rain	18	42	1891	26
25 mm (0.98 in): Days with 25 mm or more rain	18	16	1900	8
50 mm (1.97 in): Days with 50 mm or more rain	15	4	1895	1
100 mm (3.94 in): Days with 100 mm or more rain	2	1	1905	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1886.

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 (USC00191097)

Key Facts for Cambridge Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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