Manchester Threshold Days by Year (USC00275072)

16 fixed thresholds counted per year at Manchester (USC00275072): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Manchester Thresholds

Manchester: days with a maximum temperature at or above 30 C (86 F) in 43 years, most in 1971 with 45.
Manchester: days with a maximum temperature at or below 0 C (32 F) in 43 years, most in 1955 with 67.
Manchester: nights with a minimum temperature at or below 0 C (32 F) in 43 years, most in 1956 with 178.
Manchester: nights with a minimum temperature at or below -10 C (14 F) in 43 years, most in 1970 with 71.
16 fixed thresholds have at least one qualifying day at Manchester.

Days at or above 30 C (86 F)

43 years with a qualifying day

Days per year at Manchester with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 45 in 1971.

Days at or above 30 C (86 F) per year at Manchester
Year	Days	Decade average
1887	22	22
1890	10	15
1892	20	15
1930	20	18.9
1931	20	18.9
1932	16	18.9
1933	17	18.9
1934	14	18.9
1935	22	18.9
1936	10	18.9
1937	19	18.9
1938	23	18.9
1939	28	18.9
1940	23	13.5
1941	27	13.5
1942	6	13.5
1943	10	13.5
1944	18	13.5
1945	2	13.5
1946	7	13.5
1947	11	13.5
1948	9	13.5
1949	22	13.5
1950	4	15.9
1951	8	15.9
1952	20	15.9
1953	20	15.9
1954	6	15.9
1955	23	15.9
1956	4	15.9
1957	34	15.9
1958	24	15.9
1961	40	32.8
1962	22	32.8
1963	36	32.8
1964	33	32.8
1965	35	32.8
1966	40	32.8
1967	26	32.8
1968	31	32.8
1969	32	32.8
1970	40	42.5
1971	45	42.5

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

First to last qualifying date each year at Manchester
Year	First date	Last date
1887	1887-05-10	1887-08-01
1890	1890-06-11	1890-08-05
1892	1892-06-02	1892-08-17
1930	1930-05-06	1930-09-16
1931	1931-04-19	1931-09-14
1932	1932-05-16	1932-08-26
1933	1933-06-08	1933-08-02
1934	1934-06-02	1934-08-10
1935	1935-06-29	1935-08-19
1936	1936-05-08	1936-08-16
1937	1937-05-31	1937-09-03
1938	1938-05-05	1938-08-16
1939	1939-05-30	1939-09-16
1940	1940-06-03	1940-08-17
1941	1941-04-20	1941-09-16
1942	1942-06-11	1942-08-22
1943	1943-06-20	1943-08-02
1944	1944-05-27	1944-08-17
1945	1945-06-15	1945-06-30
1946	1946-06-25	1946-07-20
1947	1947-06-28	1947-08-25
1948	1948-06-30	1948-08-29
1949	1949-06-12	1949-08-28
1950	1950-06-08	1950-07-13
1951	1951-05-16	1951-08-31
1952	1952-06-24	1952-08-27
1953	1953-06-06	1953-09-05
1954	1954-06-20	1954-08-25
1955	1955-06-19	1955-08-22
1956	1956-06-13	1956-08-17
1957	1957-04-21	1957-09-16
1958	1958-06-01	1958-08-31
1961	1961-05-15	1961-09-24
1962	1962-04-28	1962-09-11
1963	1963-06-02	1963-10-27
1964	1964-05-08	1964-09-12
1965	1965-05-10	1965-09-24
1966	1966-05-28	1966-08-21
1967	1967-06-04	1967-08-19
1968	1968-06-06	1968-09-26
1969	1969-04-29	1969-09-02
1970	1970-05-11	1970-09-26
1971	1971-06-08	1971-10-03

Every Fixed Threshold

Fixed thresholds at Manchester
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	43	45	1971	45
35 C (95 F): Days	19	10	1963	5
90 F (32.2 C): Days	40	22	1966	18
100 F (37.8 C): Days	3	1	1939	1
0 C (32 F): Ice days (max	43	67	1955	38
0 C (32 F): Frost days (min	43	178	1956	160
-10 C (14 F): Days with min	43	71	1970	52
-20 C (-4 F): Days with min	39	25	1948	16
-30 C (-22 F): Days with min	4	2	1957	1
20 C (68 F): Tropical nights (min	39	17	1892	1
10 mm (0.39 in): Days with 10 mm or more rain	43	49	1951	32
25 mm (0.98 in): Days with 25 mm or more rain	43	17	1969	8
50 mm (1.97 in): Days with 50 mm or more rain	27	4	1937	2
100 mm (3.94 in): Days with 100 mm or more rain	3	1	1932	1
10 cm (3.9 in): Days with 10 cm or more snowfall	24	15	1956	5
25 cm (9.8 in): Days with 25 cm or more snowfall	11	4	1946	2

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1887.

Download the Data

Data for Manchester 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).

Manchester Threshold Days by Year (USC00275072)

Key Facts for Manchester Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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