Brentwood Post Office Weather Records (ASN00022001)

Record envelope, standing records and threshold days for Brentwood Post Office (ASN00022001), Australia, with 80 years of record.

Key Facts for Brentwood Post Office

Brentwood Post Office (ASN00022001) is a weather station in Australia at -34.87 latitude and 137.50 longitude, 15 m (49 ft) above sea level.
The station reports from 1897 to 1976, 80 years of record.
0 records set at Brentwood Post Office still stand.
Records are tracked for prcp: an element needs 30 years of data to be eligible.
Brentwood Post Office set a daily record precipitation of 7.0 mm (0.28 in) on 2 November 1976.

About the Station

Location: Australia, -34.87 latitude, 137.50 longitude.
Elevation: 15 m (49 ft).
Period of record: 1897 to 1976, 80 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 Brentwood 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 Brentwood 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 Brentwood Post Office still stand.

All-Time Record Progression

1 new records

1 all-time records were set at Brentwood Post Office between 28 February 1939 and 28 February 1939. Each dot is a new record.

Wettest Day of Each Month

Feb: 99.1 mm (3.9 in)

The wettest day on record for each calendar month at Brentwood Post Office. The most was 99.1 mm (3.9 in) on 28 February 1939.

Record daily precipitation for each month at Brentwood Post Office
Month	Record daily precipitation (mm)	Date
Jan	70.4 mm (2.8 in)	25 January 1941
Feb	99.1 mm (3.9 in)	28 February 1939
Mar	55.9 mm (2.2 in)	1 March 1921
Apr	43.2 mm (1.7 in)	23 April 1954
May	46.5 mm (1.8 in)	26 May 1910
Jun	47.8 mm (1.9 in)	16 June 1955
Jul	25.9 mm (1.0 in)	4 July 1969
Aug	33.8 mm (1.3 in)	30 August 1898
Sep	37.3 mm (1.5 in)	2 September 1911
Oct	44.7 mm (1.8 in)	19 October 1955
Nov	40.6 mm (1.6 in)	1 November 1927
Dec	29.5 mm (1.2 in)	14 December 1923

Latest Records

Latest records at Brentwood Post Office
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
2 November 1976	Brentwood Post Office, AU	daily rain	7.0 mm (0.28 in)	0.9 mm (0.04 in)	64 years	20 of 100 (Routine)
3 October 1976	Brentwood Post Office, AU	daily rain	6.0 mm (0.24 in)	0.2 mm (0.01 in)	14 years	12 of 100 (Routine)
4 October 1974	Brentwood Post Office, AU	daily rain	16.8 mm (0.7 in)	8.2 mm (0.32 in)	24 years	20 of 100 (Routine)
3 October 1974	Brentwood Post Office, AU	daily rain (Tie)	5.8 mm (0.23 in)	tie	12 years	2 of 100 (Routine)
14 August 1974	Brentwood Post Office, AU	daily rain	11.4 mm (0.4 in)	2.3 mm (0.09 in)	3 years	12 of 100 (Routine)
8 July 1974	Brentwood Post Office, AU	daily rain	11.2 mm (0.4 in)	1.0 mm (0.04 in)	40 years	20 of 100 (Routine)
13 May 1974	Brentwood Post Office, AU	daily rain	18.4 mm (0.7 in)	7.7 mm (0.30 in)	59 years	20 of 100 (Routine)
9 May 1974	Brentwood Post Office, AU	daily rain	21.0 mm (0.8 in)	2.5 mm (0.10 in)	29 years	19 of 100 (Routine)
12 April 1974	Brentwood Post Office, AU	daily rain	3.6 mm (0.14 in)	0.6 mm (0.02 in)	59 years	20 of 100 (Routine)
30 January 1974	Brentwood Post Office, AU	daily rain	26.0 mm (1.0 in)	21.2 mm (0.8 in)	44 years	41 of 100 (Notable)
28 January 1974	Brentwood Post Office, AU	daily rain	12.8 mm (0.5 in)	7.5 mm (0.30 in)	20 years	20 of 100 (Routine)
15 December 1973	Brentwood Post Office, AU	daily rain	7.4 mm (0.29 in)	0.8 mm (0.03 in)	59 years	20 of 100 (Routine)
2 December 1973	Brentwood Post Office, AU	daily rain	11.4 mm (0.4 in)	0.2 mm (0.01 in)	46 years	20 of 100 (Routine)
18 October 1973	Brentwood Post Office, AU	daily rain	14.7 mm (0.6 in)	5.0 mm (0.20 in)	63 years	20 of 100 (Routine)
23 September 1973	Brentwood Post Office, AU	daily rain	12.7 mm (0.5 in)	8.6 mm (0.34 in)	18 years	20 of 100 (Routine)
27 August 1973	Brentwood Post Office, AU	daily rain	18.5 mm (0.7 in)	6.6 mm (0.26 in)	3 years	20 of 100 (Routine)
26 July 1973	Brentwood Post Office, AU	daily rain	18.0 mm (0.7 in)	7.8 mm (0.31 in)	67 years	20 of 100 (Routine)
16 July 1973	Brentwood Post Office, AU	daily rain	14.2 mm (0.6 in)	2.8 mm (0.11 in)	35 years	20 of 100 (Routine)
14 July 1973	Brentwood Post Office, AU	daily rain	12.7 mm (0.5 in)	1.5 mm (0.06 in)	68 years	20 of 100 (Routine)
15 April 1973	Brentwood Post Office, AU	daily rain	5.6 mm (0.22 in)	1.0 mm (0.04 in)	12 years	11 of 100 (Routine)

Extremes by Year

1897 to 1976

Yearly extremes at Brentwood Post Office: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Wettest day (Rx1day)	99.1 mm (3.9 in)	1939	27.2 mm (1.1 in)	72
Wettest five days (Rx5day)	103.2 mm (4.1 in)	1939	40.3 mm (1.6 in)	72
Longest dry spell (CDD)	89 days	1961	41 days	72

Wettest day (Rx1day)

The wettest day of the year at Brentwood Post Office, 1897 to 1976. The record is 99.1 mm (3.9 in) in 1939, marked on the chart; the median year is 27.2 mm (1.1 in).

Wettest day (Rx1day) at Brentwood Post Office by year
Year	Wettest day (Rx1day)
1897	5.3 mm (0.21 in)
1898	33.8 mm (1.3 in)
1899	18.0 mm (0.7 in)
1900	17.5 mm (0.7 in)
1901	31.5 mm (1.2 in)
1902	24.1 mm (0.9 in)
1903	13.5 mm (0.5 in)
1904	25.1 mm (1.0 in)
1905	18.0 mm (0.7 in)
1906	21.3 mm (0.8 in)
1907	41.9 mm (1.6 in)
1908	34.5 mm (1.4 in)
1909	22.9 mm (0.9 in)
1910	46.5 mm (1.8 in)
1911	37.3 mm (1.5 in)
1912	30.5 mm (1.2 in)
1913	18.8 mm (0.7 in)
1914	35.3 mm (1.4 in)
1915	18.0 mm (0.7 in)
1918	24.1 mm (0.9 in)
1919	26.9 mm (1.1 in)
1920	32.5 mm (1.3 in)
1921	55.9 mm (2.2 in)
1922	31.8 mm (1.3 in)
1923	32.0 mm (1.3 in)
1924	27.2 mm (1.1 in)
1925	15.2 mm (0.6 in)
1926	23.1 mm (0.9 in)
1927	40.6 mm (1.6 in)
1928	10.7 mm (0.4 in)
1929	16.8 mm (0.7 in)
1930	18.8 mm (0.7 in)
1931	21.6 mm (0.9 in)
1932	32.3 mm (1.3 in)
1933	26.9 mm (1.1 in)
1934	17.8 mm (0.7 in)
1935	22.9 mm (0.9 in)
1936	17.8 mm (0.7 in)
1937	29.0 mm (1.1 in)
1938	31.0 mm (1.2 in)
1939	99.1 mm (3.9 in)
1940	28.4 mm (1.1 in)
1941	70.4 mm (2.8 in)
1942	32.3 mm (1.3 in)
1943	18.5 mm (0.7 in)
1944	19.8 mm (0.8 in)
1945	25.4 mm (1.0 in)
1946	30.0 mm (1.2 in)
1947	27.4 mm (1.1 in)
1948	29.2 mm (1.1 in)
1949	32.5 mm (1.3 in)
1950	23.1 mm (0.9 in)
1951	38.9 mm (1.5 in)
1952	34.5 mm (1.4 in)
1953	18.0 mm (0.7 in)
1954	43.2 mm (1.7 in)
1955	47.8 mm (1.9 in)
1956	14.5 mm (0.6 in)
1957	39.1 mm (1.5 in)
1958	30.7 mm (1.2 in)
1959	38.4 mm (1.5 in)
1960	26.2 mm (1.0 in)
1961	31.8 mm (1.3 in)
1962	20.6 mm (0.8 in)
1968	21.8 mm (0.9 in)
1969	66.3 mm (2.6 in)
1970	15.5 mm (0.6 in)
1971	29.5 mm (1.2 in)
1972	27.2 mm (1.1 in)
1973	31.2 mm (1.2 in)
1974	26.0 mm (1.0 in)
1976	11.0 mm (0.4 in)

Wettest five days (Rx5day)

The wettest five days of the year at Brentwood Post Office, 1897 to 1976. The record is 103.2 mm (4.1 in) in 1939, marked on the chart; the median year is 40.3 mm (1.6 in).

Wettest five days (Rx5day) at Brentwood Post Office by year
Year	Wettest five days (Rx5day)
1897	10.4 mm (0.4 in)
1898	63.6 mm (2.5 in)
1899	30.5 mm (1.2 in)
1900	21.6 mm (0.9 in)
1901	54.0 mm (2.1 in)
1902	29.7 mm (1.2 in)
1903	24.6 mm (1.0 in)
1904	36.3 mm (1.4 in)
1905	22.4 mm (0.9 in)
1906	27.2 mm (1.1 in)
1907	53.8 mm (2.1 in)
1908	54.0 mm (2.1 in)
1909	36.1 mm (1.4 in)
1910	66.3 mm (2.6 in)
1911	44.9 mm (1.8 in)
1912	35.1 mm (1.4 in)
1913	20.1 mm (0.8 in)
1914	45.5 mm (1.8 in)
1915	39.9 mm (1.6 in)
1918	30.2 mm (1.2 in)
1919	50.1 mm (2.0 in)
1920	48.0 mm (1.9 in)
1921	55.9 mm (2.2 in)
1922	50.1 mm (2.0 in)
1923	56.1 mm (2.2 in)
1924	63.5 mm (2.5 in)
1925	34.6 mm (1.4 in)
1926	27.2 mm (1.1 in)
1927	43.1 mm (1.7 in)
1928	30.8 mm (1.2 in)
1929	25.7 mm (1.0 in)
1930	29.4 mm (1.2 in)
1931	35.3 mm (1.4 in)
1932	46.2 mm (1.8 in)
1933	43.0 mm (1.7 in)
1934	38.4 mm (1.5 in)
1935	38.5 mm (1.5 in)
1936	23.1 mm (0.9 in)
1937	31.7 mm (1.2 in)
1938	39.4 mm (1.6 in)
1939	103.2 mm (4.1 in)
1940	49.0 mm (1.9 in)
1941	90.7 mm (3.6 in)
1942	49.6 mm (2.0 in)
1943	28.8 mm (1.1 in)
1944	49.5 mm (1.9 in)
1945	33.2 mm (1.3 in)
1946	38.9 mm (1.5 in)
1947	41.1 mm (1.6 in)
1948	47.2 mm (1.9 in)
1949	39.9 mm (1.6 in)
1950	40.6 mm (1.6 in)
1951	70.1 mm (2.8 in)
1952	60.4 mm (2.4 in)
1953	38.1 mm (1.5 in)
1954	46.4 mm (1.8 in)
1955	76.7 mm (3.0 in)
1956	33.3 mm (1.3 in)
1957	46.8 mm (1.8 in)
1958	40.6 mm (1.6 in)
1959	46.0 mm (1.8 in)
1960	43.2 mm (1.7 in)
1961	31.8 mm (1.3 in)
1962	41.5 mm (1.6 in)
1968	28.9 mm (1.1 in)
1969	68.6 mm (2.7 in)
1970	25.9 mm (1.0 in)
1971	39.4 mm (1.6 in)
1972	61.0 mm (2.4 in)
1973	31.2 mm (1.2 in)
1974	49.0 mm (1.9 in)
1976	19.8 mm (0.8 in)

Longest dry spell (CDD)

The longest dry spell of the year at Brentwood Post Office, 1897 to 1976. The record is 89 days in 1961, marked on the chart; the median year is 41 days.

Longest dry spell (CDD) at Brentwood Post Office by year
Year	Longest dry spell (CDD)
1897	70 days
1898	58 days
1899	30 days
1900	59 days
1901	41 days
1902	33 days
1903	24 days
1904	58 days
1905	48 days
1906	74 days
1907	36 days
1908	42 days
1909	49 days
1910	63 days
1911	34 days
1912	52 days
1913	46 days
1914	44 days
1915	24 days
1918	48 days
1919	43 days
1920	49 days
1921	29 days
1922	78 days
1923	53 days
1924	41 days
1925	45 days
1926	37 days
1927	37 days
1928	48 days
1929	49 days
1930	51 days
1931	51 days
1932	31 days
1933	41 days
1934	37 days
1935	67 days
1936	41 days
1937	38 days
1938	39 days
1939	27 days
1940	20 days
1941	20 days
1942	26 days
1943	44 days
1944	31 days
1945	34 days
1946	28 days
1947	30 days
1948	27 days
1949	52 days
1950	37 days
1951	43 days
1952	29 days
1953	43 days
1954	51 days
1955	38 days
1956	15 days
1957	36 days
1958	35 days
1959	41 days
1960	37 days
1961	89 days
1962	50 days
1968	18 days
1969	34 days
1970	86 days
1971	73 days
1972	47 days
1973	39 days
1974	47 days
1976	23 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

46 years, 1898 to 1973

A day with at least 27.5 mm (1.1 in) of rain is expected about once in 2 years. A day with at least 88.5 mm (3.5 in) of rain is expected about once in 100 years.

Rainfall return levels at Brentwood 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	27.5 mm (1.1 in)
5 years	39.2 mm (1.5 in)
10 years	48.5 mm (1.9 in)
25 years	62.4 mm (2.5 in)
50 years	74.6 mm (2.9 in)	Longer than the 46 years of record
100 years	88.5 mm (3.5 in)	Longer than the 46 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, 46 years of values from 1898 to 1973.

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: 99.1 mm (3.9 in) in 1939; 70.4 mm (2.8 in) in 1941; 66.3 mm (2.6 in) in 1969.

Download the Data

Data for Brentwood Post Office standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Brentwood 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