Peterborough Threshold Days by Year (CA006166416)

17 fixed thresholds counted per year at Peterborough (CA006166416): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Peterborough Thresholds

Peterborough: days with 10 cm (3.9 in) or more of snowfall in 89 years, most in 1912 with 10.
Peterborough: days with 10 mm (0.39 in) or more of precipitation in 88 years, most in 1893 with 41.
Peterborough: days with 25 mm (0.98 in) or more of precipitation in 87 years, most in 1912 with 10.
Peterborough: days with a maximum temperature at or below 0 C (32 F) in 79 years, most in 1904 with 100.
17 fixed thresholds have at least one qualifying day at Peterborough.

Days at or above 30 C (86 F)

78 years with a qualifying day

Days per year at Peterborough with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 51 in 1887.

Days at or above 30 C (86 F) per year at Peterborough
Year	Days	Decade average
1884	24	24.5
1885	11	24.5
1886	12	24.5
1887	51	24.5
1892	32	23
1893	26	23
1894	29	23
1895	30	23
1897	17	23
1898	21	23
1899	6	23
1900	35	13.4
1901	28	13.4
1902	3	13.4
1903	4	13.4
1904	3	13.4
1905	13	13.4
1906	19	13.4
1907	6	13.4
1908	12	13.4
1909	11	13.4
1910	6	19
1911	18	19
1912	11	19
1913	24	19
1914	27	19
1915	9	19
1916	33	19
1917	11	19
1918	23	19
1919	28	19
1920	9	14.4
1921	33	14.4
1922	14	14.4
1923	29	14.4
1924	6	14.4
1925	22	14.4
1926	5	14.4
1927	6	14.4
1928	5	14.4
1929	15	14.4
1930	14	25.2
1931	24	25.2
1932	4	25.2
1933	21	25.2
1934	10	25.2
1936	37	25.2
1937	46	25.2
1938	32	25.2
1939	39	25.2
1940	26	14.3
1941	30	14.3
1942	10	14.3
1943	6	14.3
1944	14	14.3
1945	6	14.3
1946	9	14.3
1947	12	14.3
1948	11	14.3
1949	19	14.3
1951	1	9.8
1952	14	9.8
1953	17	9.8
1954	2	9.8
1955	30	9.8
1956	4	9.8
1957	9	9.8
1958	1	9.8
1959	10	9.8
1960	1	8.8
1961	4	8.8
1962	9	8.8
1965	6	8.8
1966	20	8.8
1967	4	8.8
1968	12	8.8
1969	14	8.8
1970	13	13

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

First to last qualifying date each year at Peterborough
Year	First date	Last date
1884	1884-06-07	1884-09-10
1885	1885-06-28	1885-08-12
1886	1886-06-15	1886-09-08
1887	1887-05-20	1887-09-04
1892	1892-05-31	1892-09-25
1893	1893-06-14	1893-08-28
1894	1894-06-13	1894-08-25
1895	1895-05-05	1895-09-22
1897	1897-06-24	1897-09-10
1898	1898-06-30	1898-09-04
1899	1899-06-05	1899-08-31
1900	1900-05-14	1900-09-27
1901	1901-06-13	1901-09-07
1902	1902-07-07	1902-07-31
1903	1903-06-03	1903-07-09
1904	1904-06-25	1904-07-19
1905	1905-06-15	1905-09-30
1906	1906-05-18	1906-09-18
1907	1907-06-17	1907-08-11
1908	1908-06-08	1908-09-10
1909	1909-06-23	1909-09-14
1910	1910-06-14	1910-07-24
1911	1911-05-20	1911-08-07
1912	1912-06-26	1912-09-10
1913	1913-06-16	1913-09-03
1914	1914-05-22	1914-09-23
1915	1915-04-25	1915-09-15
1916	1916-07-06	1916-10-07
1917	1917-07-21	1917-08-20
1918	1918-05-18	1918-08-24
1919	1919-05-31	1919-09-08
1920	1920-06-10	1920-09-26
1921	1921-05-20	1921-09-10
1922	1922-06-07	1922-09-10
1923	1923-06-05	1923-09-05
1924	1924-07-22	1924-08-31
1925	1925-06-01	1925-09-01
1926	1926-07-03	1926-08-03
1927	1927-05-22	1927-09-17
1928	1928-05-04	1928-08-28
1929	1929-05-29	1929-09-05
1930	1930-05-07	1930-09-02
1931	1931-06-19	1931-09-13
1932	1932-06-06	1932-08-31
1933	1933-06-06	1933-08-25
1934	1934-05-31	1934-08-10
1936	1936-05-07	1936-09-23
1937	1937-05-30	1937-09-24
1938	1938-06-20	1938-10-11
1939	1939-05-07	1939-09-16
1940	1940-06-04	1940-08-31
1941	1941-05-20	1941-08-09
1942	1942-04-25	1942-09-19
1943	1943-06-25	1943-09-01
1944	1944-05-31	1944-08-16
1945	1945-06-24	1945-09-07
1946	1946-06-29	1946-09-18
1947	1947-06-29	1947-09-07
1948	1948-07-10	1948-09-06
1949	1949-05-06	1949-08-27
1951	1951-08-29	1951-08-29
1952	1952-06-26	1952-09-13
1953	1953-06-20	1953-09-04
1954	1954-07-13	1954-07-30
1955	1955-06-17	1955-09-19
1956	1956-06-12	1956-06-15
1957	1957-06-16	1957-08-03
1958	1958-08-03	1958-08-03
1959	1959-06-10	1959-09-09
1960	1960-09-08	1960-09-08
1961	1961-07-23	1961-09-11
1962	1962-05-15	1962-08-31
1965	1965-05-26	1965-09-22
1966	1966-06-23	1966-08-29
1967	1967-06-02	1967-06-16
1968	1968-06-07	1968-08-24
1969	1969-05-29	1969-08-31
1970	1970-07-26	1970-08-15

Every Fixed Threshold

Fixed thresholds at Peterborough
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	78	51	1887	13
35 C (95 F): Days	24	11	1887	3
90 F (32.2 C): Days	62	35	1887	1
100 F (37.8 C): Days	3	5	1936	5
0 C (32 F): Ice days (max	79	100	1904	82
0 C (32 F): Frost days (min	78	204	1907	155
-10 C (14 F): Days with min	78	101	1904	83
-20 C (-4 F): Days with min	77	46	1904	18
-30 C (-22 F): Days with min	42	7	1904	4
20 C (68 F): Tropical nights (min	69	17	1955	4
25 C (77 F): Days with min	2	1	1901	1
10 mm (0.39 in): Days with 10 mm or more rain	88	41	1893	24
25 mm (0.98 in): Days with 25 mm or more rain	87	10	1912	1
50 mm (1.97 in): Days with 50 mm or more rain	31	3	1938	1
10 cm (3.9 in): Days with 10 cm or more snowfall	89	10	1912	6
25 cm (9.8 in): Days with 25 cm or more snowfall	21	3	1912	1
50 cm (19.7 in): Days with 50 cm or more snowfall	2	1	1902	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1884.

Download the Data

Data for Peterborough 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).

Peterborough Threshold Days by Year (CA006166416)

Key Facts for Peterborough Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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