Knowsley Post Office Threshold Days by Year (ASN00081025)

3 fixed thresholds counted per year at Knowsley Post Office (ASN00081025): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Knowsley Post Office Thresholds

Knowsley Post Office: days with 10 mm (0.39 in) or more of precipitation in 74 years, most in 1973 with 32.
Knowsley Post Office: days with 25 mm (0.98 in) or more of precipitation in 67 years, most in 1917 with 9.
Knowsley Post Office: days with 50 mm (1.97 in) or more of precipitation in 24 years, most in 1949 with 3.
3 fixed thresholds have at least one qualifying day at Knowsley Post Office.

Days with 10 mm (0.39 in) or more of precipitation

74 years with a qualifying day

Days per year at Knowsley Post Office with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 32 in 1973.

Days with 10 mm (0.39 in) or more of precipitation per year at Knowsley Post Office
Year	Days	Decade average
1906	19	16.8
1907	11	16.8
1908	12	16.8
1909	25	16.8
1910	20	18.2
1911	17	18.2
1912	20	18.2
1913	15	18.2
1914	10	18.2
1915	19	18.2
1916	23	18.2
1917	27	18.2
1918	19	18.2
1919	12	18.2
1920	18	15.9
1921	23	15.9
1922	12	15.9
1923	12	15.9
1924	19	15.9
1925	10	15.9
1926	13	15.9
1927	11	15.9
1928	24	15.9
1929	17	15.9
1930	15	16.1
1931	21	16.1
1932	22	16.1
1933	19	16.1
1934	14	16.1
1935	18	16.1
1936	13	16.1
1937	6	16.1
1938	8	16.1
1939	25	16.1
1940	4	13.9
1941	14	13.9
1942	24	13.9
1943	7	13.9
1944	5	13.9
1945	14	13.9
1946	16	13.9
1947	22	13.9
1948	14	13.9
1949	19	13.9
1951	16	18.4
1952	20	18.4
1953	19	18.4
1954	21	18.4
1955	21	18.4
1956	28	18.4
1957	9	18.4
1958	14	18.4
1959	18	18.4
1963	18	15.7
1964	19	15.7
1965	15	15.7
1966	15	15.7
1967	9	15.7
1968	18	15.7
1969	16	15.7
1970	16	16.7
1971	16	16.7
1972	9	16.7
1973	32	16.7
1974	22	16.7
1975	22	16.7
1976	9	16.7
1977	6	16.7
1978	18	16.7
1979	17	16.7
1980	15	13.8
1981	18	13.8
1982	5	13.8
1983	17	13.8

For each year, a bar from the first to the last day at Knowsley Post Office meeting 10 mm (0.39 in).

First to last qualifying date each year at Knowsley Post Office
Year	First date	Last date
1906	1906-05-11	1906-12-17
1907	1907-01-25	1907-12-27
1908	1908-01-09	1908-11-26
1909	1909-01-03	1909-11-30
1910	1910-01-03	1910-12-09
1911	1911-02-05	1911-09-01
1912	1912-02-07	1912-12-25
1913	1913-02-14	1913-12-22
1914	1914-01-26	1914-12-25
1915	1915-01-29	1915-11-21
1916	1916-01-25	1916-12-11
1917	1917-02-21	1917-12-30
1918	1918-01-30	1918-10-04
1919	1919-02-18	1919-12-28
1920	1920-05-11	1920-11-15
1921	1921-01-02	1921-12-23
1922	1922-02-19	1922-11-29
1923	1923-05-30	1923-10-04
1924	1924-01-09	1924-12-26
1925	1925-01-13	1925-11-19
1926	1926-01-15	1926-12-15
1927	1927-01-07	1927-12-20
1928	1928-01-18	1928-10-26
1929	1929-01-12	1929-12-26
1930	1930-02-24	1930-12-25
1931	1931-03-12	1931-11-17
1932	1932-02-10	1932-12-16
1933	1933-01-22	1933-12-31
1934	1934-01-07	1934-12-30
1935	1935-01-03	1935-11-22
1936	1936-01-10	1936-12-29
1937	1937-01-19	1937-09-03
1938	1938-02-05	1938-07-29
1939	1939-01-16	1939-11-15
1940	1940-04-01	1940-09-13
1941	1941-01-25	1941-11-05
1942	1942-01-20	1942-11-22
1943	1943-01-23	1943-11-18
1944	1944-01-23	1944-12-21
1945	1945-01-16	1945-10-27
1946	1946-01-05	1946-12-27
1947	1947-02-04	1947-12-23
1948	1948-02-16	1948-12-26
1949	1949-02-21	1949-11-22
1951	1951-01-07	1951-12-09
1952	1952-01-03	1952-12-26
1953	1953-01-14	1953-12-06
1954	1954-01-28	1954-12-11
1955	1955-01-27	1955-10-07
1956	1956-01-10	1956-11-19
1957	1957-02-06	1957-10-22
1958	1958-02-17	1958-11-28
1959	1959-02-16	1959-12-28
1963	1963-01-02	1963-12-06
1964	1964-04-08	1964-12-23
1965	1965-05-09	1965-12-08
1966	1966-01-13	1966-12-04
1967	1967-05-19	1967-12-18
1968	1968-01-21	1968-12-16
1969	1969-02-10	1969-12-02
1970	1970-01-02	1970-11-15
1971	1971-01-30	1971-12-23
1972	1972-01-13	1972-10-04
1973	1973-01-06	1973-12-30
1974	1974-01-04	1974-11-23
1975	1975-01-23	1975-12-29
1976	1976-02-09	1976-12-24
1977	1977-01-16	1977-10-03
1978	1978-01-05	1978-12-25
1979	1979-01-17	1979-11-12
1980	1980-01-04	1980-12-14
1981	1981-01-10	1981-10-21
1982	1982-01-25	1982-05-06
1983	1983-04-05	1983-11-30

Every Fixed Threshold

Fixed thresholds at Knowsley Post Office
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
10 mm (0.39 in): Days with 10 mm or more rain	74	32	1973	17
25 mm (0.98 in): Days with 25 mm or more rain	67	9	1917	3
50 mm (1.97 in): Days with 50 mm or more rain	24	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 1906.

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Data for Knowsley Post Office 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).

Knowsley Post Office Threshold Days by Year (ASN00081025)

Key Facts for Knowsley Post Office Thresholds

Days with 10 mm (0.39 in) or more of precipitation

Every Fixed Threshold

Download the Data

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