Heywood Post Office Threshold Days by Year (ASN00090047)

4 fixed thresholds counted per year at Heywood Post Office (ASN00090047): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Heywood Post Office Thresholds

Heywood Post Office: days with 10 mm (0.39 in) or more of precipitation in 68 years, most in 1890 with 40.
Heywood Post Office: days with 25 mm (0.98 in) or more of precipitation in 66 years, most in 1895 with 8.
Heywood Post Office: days with 50 mm (1.97 in) or more of precipitation in 15 years, most in 1946 with 5.
Heywood Post Office: days with 100 mm (3.94 in) or more of precipitation in 1 years, most in 1946 with 1.
4 fixed thresholds have at least one qualifying day at Heywood Post Office.

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

68 years with a qualifying day

Days per year at Heywood Post Office with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 40 in 1890.

Days with 10 mm (0.39 in) or more of precipitation per year at Heywood Post Office
Year	Days	Decade average
1887	21	26
1888	25	26
1889	32	26
1890	40	25.8
1891	31	25.8
1894	31	25.8
1895	24	25.8
1896	18	25.8
1897	15	25.8
1898	19	25.8
1899	28	25.8
1910	19	23.9
1911	29	23.9
1913	22	23.9
1914	14	23.9
1915	27	23.9
1916	24	23.9
1917	34	23.9
1918	22	23.9
1919	24	23.9
1920	21	24.6
1921	23	24.6
1922	28	24.6
1923	25	24.6
1924	19	24.6
1925	17	24.6
1926	24	24.6
1927	26	24.6
1928	28	24.6
1929	35	24.6
1930	27	24.9
1931	28	24.9
1932	25	24.9
1933	26	24.9
1934	25	24.9
1935	30	24.9
1936	20	24.9
1937	17	24.9
1938	21	24.9
1939	30	24.9
1940	24	24.7
1941	22	24.7
1942	34	24.7
1943	19	24.7
1944	22	24.7
1945	26	24.7
1946	31	24.7
1947	35	24.7
1948	21	24.7
1949	13	24.7
1952	37	25.6
1953	23	25.6
1954	19	25.6
1955	33	25.6
1956	28	25.6
1957	22	25.6
1958	29	25.6
1959	14	25.6
1960	32	18.1
1961	13	18.1
1962	16	18.1
1963	18	18.1
1965	18	18.1
1966	15	18.1
1967	10	18.1
1968	23	18.1
1969	18	18.1
1970	20	20

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

First to last qualifying date each year at Heywood Post Office
Year	First date	Last date
1887	1887-01-14	1887-12-24
1888	1888-02-04	1888-12-13
1889	1889-01-02	1889-11-18
1890	1890-01-21	1890-12-30
1891	1891-01-05	1891-12-16
1894	1894-03-22	1894-12-27
1895	1895-03-13	1895-12-18
1896	1896-01-17	1896-12-27
1897	1897-04-12	1897-10-31
1898	1898-04-02	1898-12-07
1899	1899-01-30	1899-12-29
1910	1910-03-08	1910-12-23
1911	1911-02-05	1911-12-19
1913	1913-03-13	1913-12-25
1914	1914-03-13	1914-12-25
1915	1915-03-07	1915-11-28
1916	1916-01-28	1916-12-13
1917	1917-02-15	1917-12-31
1918	1918-01-14	1918-10-31
1919	1919-02-02	1919-10-10
1920	1920-03-08	1920-11-04
1921	1921-01-03	1921-12-02
1922	1922-01-07	1922-12-30
1923	1923-05-10	1923-12-14
1924	1924-01-11	1924-12-02
1925	1925-01-22	1925-09-28
1926	1926-02-09	1926-12-17
1927	1927-01-05	1927-12-05
1928	1928-01-17	1928-11-05
1929	1929-01-30	1929-12-28
1930	1930-02-20	1930-12-26
1931	1931-01-19	1931-11-17
1932	1932-02-05	1932-12-01
1933	1933-01-30	1933-12-16
1934	1934-04-03	1934-12-29
1935	1935-01-02	1935-11-22
1936	1936-03-13	1936-12-13
1937	1937-01-19	1937-12-27
1938	1938-01-26	1938-12-27
1939	1939-04-05	1939-12-05
1940	1940-01-05	1940-11-22
1941	1941-01-25	1941-09-29
1942	1942-01-20	1942-12-19
1943	1943-02-18	1943-10-18
1944	1944-01-04	1944-12-23
1945	1945-01-31	1945-12-27
1946	1946-01-17	1946-12-28
1947	1947-02-17	1947-12-26
1948	1948-01-05	1948-11-08
1949	1949-01-14	1949-11-29
1952	1952-01-24	1952-12-11
1953	1953-05-19	1953-12-09
1954	1954-01-28	1954-11-20
1955	1955-01-28	1955-12-31
1956	1956-01-03	1956-12-13
1957	1957-02-07	1957-12-26
1958	1958-01-30	1958-11-24
1959	1959-02-07	1959-12-28
1960	1960-01-09	1960-12-05
1961	1961-04-14	1961-12-15
1962	1962-02-14	1962-12-11
1963	1963-01-14	1963-09-23
1965	1965-03-12	1965-12-07
1966	1966-02-24	1966-12-19
1967	1967-01-13	1967-12-13
1968	1968-03-29	1968-12-26
1969	1969-01-25	1969-12-11
1970	1970-01-02	1970-12-31

Every Fixed Threshold

Fixed thresholds at Heywood 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	68	40	1890	20
25 mm (0.98 in): Days with 25 mm or more rain	66	8	1895	5
50 mm (1.97 in): Days with 50 mm or more rain	15	5	1946	1
100 mm (3.94 in): Days with 100 mm or more rain	1	1	1946	1

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 Heywood 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).

Heywood Post Office Threshold Days by Year (ASN00090047)

Key Facts for Heywood Post Office Thresholds

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

Every Fixed Threshold

Download the Data

Related