Heywood Post Office Weather Records (ASN00090047)

Record envelope, standing records and threshold days for Heywood Post Office (ASN00090047), Australia, with 85 years of record.

Key Facts for Heywood Post Office

Heywood Post Office (ASN00090047) is a weather station in Australia at -38.10 latitude and 141.63 longitude, n/a above sea level.
The station reports from 1887 to 1971, 85 years of record.
0 records set at Heywood Post Office still stand.
Records are tracked for prcp: an element needs 30 years of data to be eligible.
Heywood Post Office set a daily record precipitation of 42.2 mm (1.7 in) on 15 March 1971.

About the Station

Location: Australia, -38.10 latitude, 141.63 longitude.
Elevation: n/a.
Period of record: 1887 to 1971, 85 years.
Eligible elements: prcp.

Daily Record Envelope and 2026

0 days at or beyond a record

The band shows the record high and record low for each calendar day at Heywood Post Office. The lines show the 2026 daily maximum and minimum. 0 days in 2026 matched or passed a record. Temperatures are in degrees Celsius.

Daily record high and record low at Heywood Post Office, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	n/a	n/a	n/a	n/a
Feb	n/a	n/a	n/a	n/a
Mar	n/a	n/a	n/a	n/a
Apr	n/a	n/a	n/a	n/a
May	n/a	n/a	n/a	n/a
Jun	n/a	n/a	n/a	n/a
Jul	n/a	n/a	n/a	n/a
Aug	n/a	n/a	n/a	n/a
Sep	n/a	n/a	n/a	n/a
Oct	n/a	n/a	n/a	n/a
Nov	n/a	n/a	n/a	n/a
Dec	n/a	n/a	n/a	n/a

Which Years Hold Standing Records

0 standing records

0 records at Heywood Post Office still stand.

All-Time Record Progression

2 new records

2 all-time records were set at Heywood Post Office between 21 February 1945 and 17 March 1946. Each dot is a new record.

When Heywood Post Office set new all-time records
Date	Kind	Detail
1945-02-21	Record daily precipitation	Record daily precipitation 95.0 mm (3.7 in)
1946-03-17	Record daily precipitation	Record daily precipitation 122.7 mm (4.8 in)

Wettest Day of Each Month

Mar: 122.7 mm (4.8 in)

The wettest day on record for each calendar month at Heywood Post Office. The most was 122.7 mm (4.8 in) on 17 March 1946.

Record daily precipitation for each month at Heywood Post Office
Month	Record daily precipitation (mm)	Date
Jan	71.1 mm (2.8 in)	25 January 1941
Feb	95.0 mm (3.7 in)	21 February 1945
Mar	122.7 mm (4.8 in)	17 March 1946
Apr	77.2 mm (3.0 in)	5 April 1939
May	72.6 mm (2.9 in)	12 May 1925
Jun	63.5 mm (2.5 in)	5 June 1923
Jul	37.1 mm (1.5 in)	14 July 1895
Aug	44.2 mm (1.7 in)	8 August 1955
Sep	43.7 mm (1.7 in)	20 September 1934
Oct	50.8 mm (2.0 in)	5 October 1894
Nov	52.1 mm (2.1 in)	10 November 1947
Dec	84.6 mm (3.3 in)	14 December 1894

Latest Records

Latest records at Heywood Post Office
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
15 March 1971	Heywood Post Office, AU	daily rain	42.2 mm (1.7 in)	29.2 mm (1.1 in)	57 years	54 of 100 (Notable)
5 December 1970	Heywood Post Office, AU	daily rain	30.7 mm (1.2 in)	1.5 mm (0.06 in)	43 years	21 of 100 (Routine)
20 July 1970	Heywood Post Office, AU	daily rain (Tie)	26.2 mm (1.0 in)	tie	28 years	4 of 100 (Routine)
27 June 1970	Heywood Post Office, AU	daily rain	23.4 mm (0.9 in)	1.3 mm (0.05 in)	24 years	16 of 100 (Routine)
3 January 1970	Heywood Post Office, AU	daily rain	39.1 mm (1.5 in)	6.6 mm (0.26 in)	48 years	30 of 100 (Routine)
2 January 1970	Heywood Post Office, AU	daily rain	42.7 mm (1.7 in)	30.0 mm (1.2 in)	80 years	71 of 100 (Major)
29 October 1969	Heywood Post Office, AU	daily rain	22.6 mm (0.9 in)	7.4 mm (0.29 in)	52 years	20 of 100 (Routine)
10 February 1969	Heywood Post Office, AU	daily rain	32.5 mm (1.3 in)	20.1 mm (0.8 in)	34 years	39 of 100 (Notable)
2 November 1968	Heywood Post Office, AU	daily rain	29.2 mm (1.1 in)	3.5 mm (0.14 in)	41 years	25 of 100 (Routine)
26 October 1968	Heywood Post Office, AU	daily rain	21.6 mm (0.9 in)	7.9 mm (0.31 in)	40 years	20 of 100 (Routine)
25 October 1968	Heywood Post Office, AU	daily rain	25.4 mm (1.0 in)	7.4 mm (0.29 in)	17 years	25 of 100 (Routine)
1 October 1968	Heywood Post Office, AU	daily rain	25.4 mm (1.0 in)	0.5 mm (0.02 in)	45 years	21 of 100 (Routine)
27 May 1968	Heywood Post Office, AU	daily rain	41.1 mm (1.6 in)	6.0 mm (0.24 in)	5 years	17 of 100 (Routine)
2 May 1968	Heywood Post Office, AU	daily rain	33.3 mm (1.3 in)	16.0 mm (0.6 in)	11 years	34 of 100 (Routine)
13 January 1967	Heywood Post Office, AU	daily rain	16.3 mm (0.6 in)	7.2 mm (0.28 in)	0 years	17 of 100 (Routine)
13 January 1966	Heywood Post Office, AU	daily rain	9.1 mm (0.36 in)	3.5 mm (0.14 in)	52 years	20 of 100 (Routine)
11 November 1965	Heywood Post Office, AU	daily rain	21.6 mm (0.9 in)	0.5 mm (0.02 in)	10 years	10 of 100 (Routine)
16 September 1965	Heywood Post Office, AU	daily rain	20.1 mm (0.8 in)	3.1 mm (0.12 in)	27 years	19 of 100 (Routine)
9 May 1965	Heywood Post Office, AU	daily rain (Tie)	10.7 mm (0.4 in)	tie	20 years	3 of 100 (Routine)
24 March 1964	Heywood Post Office, AU	daily rain	18.5 mm (0.7 in)	8.3 mm (0.33 in)	64 years	20 of 100 (Routine)

Extremes by Year

1887 to 1971

Yearly extremes at Heywood Post Office: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Wettest day (Rx1day)	122.7 mm (4.8 in)	1946	34.8 mm (1.4 in)	78
Wettest five days (Rx5day)	242.6 mm (9.6 in)	1946	63.6 mm (2.5 in)	78
Longest dry spell (CDD)	71 days	1895	22 days	78

Wettest day (Rx1day)

The wettest day of the year at Heywood Post Office, 1887 to 1971. The record is 122.7 mm (4.8 in) in 1946, marked on the chart; the median year is 34.8 mm (1.4 in).

Wettest day (Rx1day) at Heywood Post Office by year
Year	Wettest day (Rx1day)
1887	63.5 mm (2.5 in)
1888	32.0 mm (1.3 in)
1889	36.8 mm (1.4 in)
1890	31.2 mm (1.2 in)
1891	38.9 mm (1.5 in)
1892	22.4 mm (0.9 in)
1894	84.6 mm (3.3 in)
1895	38.1 mm (1.5 in)
1896	50.8 mm (2.0 in)
1897	31.0 mm (1.2 in)
1898	30.2 mm (1.2 in)
1899	32.0 mm (1.3 in)
1900	25.1 mm (1.0 in)
1901	32.8 mm (1.3 in)
1903	10.2 mm (0.4 in)
1909	31.0 mm (1.2 in)
1910	33.0 mm (1.3 in)
1911	31.0 mm (1.2 in)
1912	29.5 mm (1.2 in)
1913	32.3 mm (1.3 in)
1914	30.5 mm (1.2 in)
1915	55.9 mm (2.2 in)
1916	30.0 mm (1.2 in)
1917	44.5 mm (1.8 in)
1918	34.5 mm (1.4 in)
1919	54.6 mm (2.1 in)
1920	25.4 mm (1.0 in)
1921	32.5 mm (1.3 in)
1922	27.4 mm (1.1 in)
1923	63.5 mm (2.5 in)
1924	42.4 mm (1.7 in)
1925	72.6 mm (2.9 in)
1926	36.3 mm (1.4 in)
1927	29.2 mm (1.1 in)
1928	41.9 mm (1.6 in)
1929	45.7 mm (1.8 in)
1930	34.3 mm (1.4 in)
1931	39.6 mm (1.6 in)
1932	37.1 mm (1.5 in)
1933	29.2 mm (1.1 in)
1934	43.7 mm (1.7 in)
1935	27.7 mm (1.1 in)
1936	28.4 mm (1.1 in)
1937	31.2 mm (1.2 in)
1938	38.9 mm (1.5 in)
1939	77.2 mm (3.0 in)
1940	29.2 mm (1.1 in)
1941	71.1 mm (2.8 in)
1942	39.4 mm (1.6 in)
1943	39.9 mm (1.6 in)
1944	27.2 mm (1.1 in)
1945	95.0 mm (3.7 in)
1946	122.7 mm (4.8 in)
1947	57.7 mm (2.3 in)
1948	49.5 mm (1.9 in)
1949	27.2 mm (1.1 in)
1950	25.4 mm (1.0 in)
1951	27.9 mm (1.1 in)
1952	48.3 mm (1.9 in)
1953	32.5 mm (1.3 in)
1954	54.6 mm (2.1 in)
1955	44.2 mm (1.7 in)
1956	37.8 mm (1.5 in)
1957	62.0 mm (2.4 in)
1958	36.3 mm (1.4 in)
1959	48.8 mm (1.9 in)
1960	54.6 mm (2.1 in)
1961	31.5 mm (1.2 in)
1962	25.9 mm (1.0 in)
1963	35.1 mm (1.4 in)
1964	22.9 mm (0.9 in)
1965	31.0 mm (1.2 in)
1966	22.6 mm (0.9 in)
1967	18.8 mm (0.7 in)
1968	41.1 mm (1.6 in)
1969	32.5 mm (1.3 in)
1970	42.7 mm (1.7 in)
1971	42.2 mm (1.7 in)

Wettest five days (Rx5day)

The wettest five days of the year at Heywood Post Office, 1887 to 1971. The record is 242.6 mm (9.6 in) in 1946, marked on the chart; the median year is 63.6 mm (2.5 in).

Wettest five days (Rx5day) at Heywood Post Office by year
Year	Wettest five days (Rx5day)
1887	71.6 mm (2.8 in)
1888	80.3 mm (3.2 in)
1889	58.4 mm (2.3 in)
1890	66.1 mm (2.6 in)
1891	81.2 mm (3.2 in)
1892	66.2 mm (2.6 in)
1894	116.3 mm (4.6 in)
1895	62.6 mm (2.5 in)
1896	66.5 mm (2.6 in)
1897	39.4 mm (1.6 in)
1898	56.6 mm (2.2 in)
1899	54.9 mm (2.2 in)
1900	67.9 mm (2.7 in)
1901	59.4 mm (2.3 in)
1903	32.2 mm (1.3 in)
1909	53.3 mm (2.1 in)
1910	49.6 mm (2.0 in)
1911	86.8 mm (3.4 in)
1912	36.4 mm (1.4 in)
1913	48.8 mm (1.9 in)
1914	51.8 mm (2.0 in)
1915	70.8 mm (2.8 in)
1916	63.5 mm (2.5 in)
1917	55.9 mm (2.2 in)
1918	66.6 mm (2.6 in)
1919	82.5 mm (3.2 in)
1920	65.0 mm (2.6 in)
1921	69.0 mm (2.7 in)
1922	61.8 mm (2.4 in)
1923	85.4 mm (3.4 in)
1924	80.5 mm (3.2 in)
1925	103.8 mm (4.1 in)
1926	52.5 mm (2.1 in)
1927	73.4 mm (2.9 in)
1928	62.5 mm (2.5 in)
1929	75.1 mm (3.0 in)
1930	73.9 mm (2.9 in)
1931	50.2 mm (2.0 in)
1932	70.9 mm (2.8 in)
1933	56.7 mm (2.2 in)
1934	65.6 mm (2.6 in)
1935	46.8 mm (1.8 in)
1936	58.8 mm (2.3 in)
1937	41.1 mm (1.6 in)
1938	69.7 mm (2.7 in)
1939	94.0 mm (3.7 in)
1940	60.2 mm (2.4 in)
1941	110.0 mm (4.3 in)
1942	72.6 mm (2.9 in)
1943	64.3 mm (2.5 in)
1944	46.1 mm (1.8 in)
1945	145.7 mm (5.7 in)
1946	242.6 mm (9.6 in)
1947	108.4 mm (4.3 in)
1948	62.7 mm (2.5 in)
1949	48.2 mm (1.9 in)
1950	52.4 mm (2.1 in)
1951	53.2 mm (2.1 in)
1952	94.0 mm (3.7 in)
1953	65.5 mm (2.6 in)
1954	57.6 mm (2.3 in)
1955	102.4 mm (4.0 in)
1956	104.8 mm (4.1 in)
1957	68.4 mm (2.7 in)
1958	94.9 mm (3.7 in)
1959	63.3 mm (2.5 in)
1960	63.7 mm (2.5 in)
1961	51.4 mm (2.0 in)
1962	52.6 mm (2.1 in)
1963	46.7 mm (1.8 in)
1964	61.3 mm (2.4 in)
1965	48.3 mm (1.9 in)
1966	54.1 mm (2.1 in)
1967	45.3 mm (1.8 in)
1968	91.9 mm (3.6 in)
1969	46.2 mm (1.8 in)
1970	84.4 mm (3.3 in)
1971	42.7 mm (1.7 in)

Longest dry spell (CDD)

The longest dry spell of the year at Heywood Post Office, 1887 to 1971. The record is 71 days in 1895, marked on the chart; the median year is 22 days.

Longest dry spell (CDD) at Heywood Post Office by year
Year	Longest dry spell (CDD)
1887	21 days
1888	27 days
1889	24 days
1890	29 days
1891	50 days
1892	70 days
1894	23 days
1895	71 days
1896	30 days
1897	19 days
1898	36 days
1899	24 days
1900	16 days
1901	16 days
1903	6 days
1909	11 days
1910	22 days
1911	17 days
1912	27 days
1913	27 days
1914	24 days
1915	32 days
1916	24 days
1917	23 days
1918	16 days
1919	16 days
1920	20 days
1921	40 days
1922	21 days
1923	36 days
1924	23 days
1925	28 days
1926	22 days
1927	16 days
1928	25 days
1929	16 days
1930	24 days
1931	20 days
1932	20 days
1933	20 days
1934	32 days
1935	21 days
1936	51 days
1937	22 days
1938	12 days
1939	12 days
1940	16 days
1941	22 days
1942	14 days
1943	14 days
1944	14 days
1945	25 days
1946	11 days
1947	20 days
1948	25 days
1949	11 days
1950	34 days
1951	25 days
1952	14 days
1953	18 days
1954	18 days
1955	16 days
1956	25 days
1957	20 days
1958	15 days
1959	31 days
1960	15 days
1961	27 days
1962	23 days
1963	14 days
1964	21 days
1965	17 days
1966	15 days
1967	31 days
1968	22 days
1969	17 days
1970	25 days
1971	13 days

Each chart shows one value per year; the dot marks the record year. TXx is the hottest daily maximum, TNn the coldest daily minimum, Rx1day and Rx5day the largest one-day and five-day rain totals, and CDD the longest run of days with less than 1 mm of rain. A year with missing days can understate an extreme.

Rainfall Return Levels

68 years, 1887 to 1970

A day with at least 37.1 mm (1.5 in) of rain is expected about once in 2 years. A day with at least 119.2 mm (4.7 in) of rain is expected about once in 100 years.

Rainfall return levels at Heywood Post Office: the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	37.1 mm (1.5 in)
5 years	50.7 mm (2.0 in)
10 years	62.3 mm (2.5 in)
25 years	80.9 mm (3.2 in)
50 years	98.3 mm (3.9 in)
100 years	119.2 mm (4.7 in)	Longer than the 68 years of record

The levels come from a generalised extreme value (GEV) distribution fitted by L-moments to the wettest-day total of each year, 68 years of values from 1887 to 1970.

A return level is an estimate. It is least reliable for the long periods, 50 and 100 years, and for any period longer than the record behind the fit, where the fit has to reach past the largest day actually observed. It is not a forecast.

The largest wettest-day totals in the fit: 122.7 mm (4.8 in) in 1946; 95.0 mm (3.7 in) in 1945; 84.6 mm (3.3 in) in 1894.

Download the Data

Data for Heywood Post Office standing records by year: CSV or JSON. Field meanings are on the data page.
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 2026-10-14 (14 October 2026). Records are computed by this site and are not official.

Data as of 2025-12-31. Last revised 31 December 2025 (2025-12-31).

Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	n/a	n/a	n/a	n/a
Feb	n/a	n/a	n/a	n/a
Mar	n/a	n/a	n/a	n/a
Apr	n/a	n/a	n/a	n/a
May	n/a	n/a	n/a	n/a
Jun	n/a	n/a	n/a	n/a
Jul	n/a	n/a	n/a	n/a
Aug	n/a	n/a	n/a	n/a
Sep	n/a	n/a	n/a	n/a
Oct	n/a	n/a	n/a	n/a
Nov	n/a	n/a	n/a	n/a
Dec	n/a	n/a	n/a	n/a

Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	n/a	n/a	n/a	n/a
Feb	n/a	n/a	n/a	n/a
Mar	n/a	n/a	n/a	n/a
Apr	n/a	n/a	n/a	n/a
May	n/a	n/a	n/a	n/a
Jun	n/a	n/a	n/a	n/a
Jul	n/a	n/a	n/a	n/a
Aug	n/a	n/a	n/a	n/a
Sep	n/a	n/a	n/a	n/a
Oct	n/a	n/a	n/a	n/a
Nov	n/a	n/a	n/a	n/a
Dec	n/a	n/a	n/a	n/a