Byrock Post Office Weather Records (ASN00048021)

Record envelope, standing records and threshold days for Byrock Post Office (ASN00048021), Australia, with 118 years of record.

Key Facts for Byrock Post Office

Byrock Post Office (ASN00048021) is a weather station in Australia at -30.66 latitude and 146.41 longitude, 152 m (499 ft) above sea level.
The station reports from 1890 to 2007, 118 years of record.
0 records set at Byrock Post Office still stand.
Records are tracked for prcp: an element needs 30 years of data to be eligible.
Byrock Post Office set a daily record precipitation of 43.8 mm (1.7 in) on 18 May 2007.

About the Station

Location: Australia, -30.66 latitude, 146.41 longitude.
Elevation: 152 m (499 ft).
Period of record: 1890 to 2007, 118 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 Byrock 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 Byrock 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 Byrock Post Office still stand.

All-Time Record Progression

1 new records

1 all-time records were set at Byrock Post Office between 17 March 1969 and 17 March 1969. Each dot is a new record.

Wettest Day of Each Month

Mar: 146.3 mm (5.8 in)

The wettest day on record for each calendar month at Byrock Post Office. The most was 146.3 mm (5.8 in) on 17 March 1969.

Record daily precipitation for each month at Byrock Post Office
Month	Record daily precipitation (mm)	Date
Jan	91.2 mm (3.6 in)	25 January 1939
Feb	120.0 mm (4.7 in)	24 February 1976
Mar	146.3 mm (5.8 in)	17 March 1969
Apr	97.8 mm (3.9 in)	13 April 1905
May	64.3 mm (2.5 in)	13 May 1968
Jun	60.2 mm (2.4 in)	14 June 1948
Jul	45.7 mm (1.8 in)	11 July 1945
Aug	55.4 mm (2.2 in)	1 August 1960
Sep	39.6 mm (1.6 in)	3 September 1990
Oct	80.3 mm (3.2 in)	10 October 1973
Nov	63.8 mm (2.5 in)	4 November 1895
Dec	76.5 mm (3.0 in)	17 December 1936

Latest Records

Latest records at Byrock Post Office
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
18 May 2007	Byrock Post Office, AU	daily rain	43.8 mm (1.7 in)	21.8 mm (0.9 in)	16 years	33 of 100 (Routine)
2 January 2007	Byrock Post Office, AU	daily rain	19.2 mm (0.8 in)	3.2 mm (0.13 in)	19 years	17 of 100 (Routine)
15 July 2006	Byrock Post Office, AU	daily rain	22.0 mm (0.9 in)	12.9 mm (0.5 in)	36 years	20 of 100 (Routine)
4 September 2005	Byrock Post Office, AU	daily rain	17.4 mm (0.7 in)	10.0 mm (0.4 in)	7 years	20 of 100 (Routine)
29 June 2005	Byrock Post Office, AU	daily rain	31.0 mm (1.2 in)	19.6 mm (0.8 in)	66 years	51 of 100 (Notable)
12 May 2005	Byrock Post Office, AU	daily rain	18.4 mm (0.7 in)	1.6 mm (0.06 in)	74 years	20 of 100 (Routine)
29 April 2004	Byrock Post Office, AU	daily rain	36.8 mm (1.4 in)	21.6 mm (0.9 in)	69 years	46 of 100 (Notable)
3 December 2003	Byrock Post Office, AU	daily rain	16.0 mm (0.6 in)	0.6 mm (0.02 in)	22 years	16 of 100 (Routine)
7 November 2003	Byrock Post Office, AU	daily rain	9.0 mm (0.35 in)	3.6 mm (0.14 in)	1 year	13 of 100 (Routine)
16 April 2002	Byrock Post Office, AU	daily rain	32.8 mm (1.3 in)	4.6 mm (0.18 in)	93 years	41 of 100 (Notable)
7 November 2001	Byrock Post Office, AU	daily rain	5.4 mm (0.21 in)	0.6 mm (0.02 in)	32 years	19 of 100 (Routine)
8 June 2001	Byrock Post Office, AU	daily rain	27.2 mm (1.1 in)	1.0 mm (0.04 in)	38 years	22 of 100 (Routine)
19 November 2000	Byrock Post Office, AU	daily rain	27.2 mm (1.1 in)	13.0 mm (0.5 in)	57 years	39 of 100 (Notable)
14 November 2000	Byrock Post Office, AU	daily rain	52.6 mm (2.1 in)	20.6 mm (0.8 in)	3 years	29 of 100 (Routine)
3 May 2000	Byrock Post Office, AU	daily rain	43.6 mm (1.7 in)	14.1 mm (0.6 in)	52 years	37 of 100 (Notable)
4 April 2000	Byrock Post Office, AU	daily rain (Tie)	9.6 mm (0.38 in)	tie	23 years	4 of 100 (Routine)
11 March 2000	Byrock Post Office, AU	daily rain	30.2 mm (1.2 in)	16.2 mm (0.6 in)	88 years	45 of 100 (Notable)
8 March 2000	Byrock Post Office, AU	daily rain	107.2 mm (4.2 in)	74.2 mm (2.9 in)	50 years	65 of 100 (Major)
26 December 1999	Byrock Post Office, AU	daily rain	21.4 mm (0.8 in)	2.3 mm (0.09 in)	96 years	20 of 100 (Routine)
24 December 1999	Byrock Post Office, AU	daily rain	19.2 mm (0.8 in)	0.7 mm (0.03 in)	32 years	19 of 100 (Routine)

Extremes by Year

1890 to 2007

Yearly extremes at Byrock Post Office: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Wettest day (Rx1day)	146.3 mm (5.8 in)	1969	43.5 mm (1.7 in)	116
Wettest five days (Rx5day)	262.6 mm (10.3 in)	1896	58.4 mm (2.3 in)	116
Longest dry spell (CDD)	116 days	1902	50 days	116

Wettest day (Rx1day)

The wettest day of the year at Byrock Post Office, 1890 to 2007. The record is 146.3 mm (5.8 in) in 1969, marked on the chart; the median year is 43.5 mm (1.7 in).

Wettest day (Rx1day) at Byrock Post Office by year
Year	Wettest day (Rx1day)
1890	21.3 mm (0.8 in)
1891	67.8 mm (2.7 in)
1892	26.2 mm (1.0 in)
1893	50.3 mm (2.0 in)
1894	45.2 mm (1.8 in)
1895	63.8 mm (2.5 in)
1896	119.9 mm (4.7 in)
1897	51.6 mm (2.0 in)
1898	74.2 mm (2.9 in)
1899	40.6 mm (1.6 in)
1900	44.5 mm (1.8 in)
1901	28.7 mm (1.1 in)
1902	52.8 mm (2.1 in)
1903	36.8 mm (1.4 in)
1904	35.6 mm (1.4 in)
1905	97.8 mm (3.9 in)
1906	53.6 mm (2.1 in)
1907	28.7 mm (1.1 in)
1908	34.3 mm (1.4 in)
1909	34.8 mm (1.4 in)
1910	81.5 mm (3.2 in)
1911	46.0 mm (1.8 in)
1912	58.4 mm (2.3 in)
1913	81.8 mm (3.2 in)
1914	43.2 mm (1.7 in)
1915	60.2 mm (2.4 in)
1916	54.6 mm (2.1 in)
1917	62.5 mm (2.5 in)
1918	33.3 mm (1.3 in)
1919	20.3 mm (0.8 in)
1920	25.9 mm (1.0 in)
1921	61.0 mm (2.4 in)
1923	5.1 mm (0.20 in)
1925	15.7 mm (0.6 in)
1926	35.6 mm (1.4 in)
1927	43.2 mm (1.7 in)
1928	42.4 mm (1.7 in)
1929	18.8 mm (0.7 in)
1930	45.5 mm (1.8 in)
1931	33.0 mm (1.3 in)
1932	50.8 mm (2.0 in)
1933	57.4 mm (2.3 in)
1934	35.1 mm (1.4 in)
1935	26.9 mm (1.1 in)
1936	76.5 mm (3.0 in)
1937	38.6 mm (1.5 in)
1938	47.0 mm (1.9 in)
1939	91.2 mm (3.6 in)
1940	48.3 mm (1.9 in)
1941	63.5 mm (2.5 in)
1942	29.2 mm (1.1 in)
1943	51.8 mm (2.0 in)
1944	26.9 mm (1.1 in)
1945	45.7 mm (1.8 in)
1946	45.0 mm (1.8 in)
1947	47.5 mm (1.9 in)
1948	60.2 mm (2.4 in)
1949	116.8 mm (4.6 in)
1950	45.7 mm (1.8 in)
1951	25.4 mm (1.0 in)
1952	25.4 mm (1.0 in)
1953	38.4 mm (1.5 in)
1954	28.7 mm (1.1 in)
1955	6.6 mm (0.26 in)
1956	81.0 mm (3.2 in)
1957	27.4 mm (1.1 in)
1958	26.7 mm (1.1 in)
1959	24.6 mm (1.0 in)
1960	55.4 mm (2.2 in)
1961	32.8 mm (1.3 in)
1962	52.3 mm (2.1 in)
1963	115.6 mm (4.6 in)
1964	36.1 mm (1.4 in)
1965	21.3 mm (0.8 in)
1966	33.0 mm (1.3 in)
1967	42.9 mm (1.7 in)
1968	88.4 mm (3.5 in)
1969	146.3 mm (5.8 in)
1970	40.1 mm (1.6 in)
1971	43.9 mm (1.7 in)
1972	42.2 mm (1.7 in)
1973	80.3 mm (3.2 in)
1974	40.0 mm (1.6 in)
1975	29.0 mm (1.1 in)
1976	124.4 mm (4.9 in)
1977	44.8 mm (1.8 in)
1978	38.0 mm (1.5 in)
1979	34.2 mm (1.3 in)
1980	24.6 mm (1.0 in)
1981	54.4 mm (2.1 in)
1982	64.0 mm (2.5 in)
1983	61.0 mm (2.4 in)
1984	31.4 mm (1.2 in)
1985	28.0 mm (1.1 in)
1986	47.8 mm (1.9 in)
1987	31.0 mm (1.2 in)
1988	34.0 mm (1.3 in)
1989	55.0 mm (2.2 in)
1990	54.0 mm (2.1 in)
1991	39.0 mm (1.5 in)
1992	25.4 mm (1.0 in)
1993	72.0 mm (2.8 in)
1994	49.4 mm (1.9 in)
1995	90.0 mm (3.5 in)
1996	55.0 mm (2.2 in)
1997	42.0 mm (1.7 in)
1998	72.2 mm (2.8 in)
1999	63.0 mm (2.5 in)
2000	107.2 mm (4.2 in)
2001	29.0 mm (1.1 in)
2002	32.8 mm (1.3 in)
2003	24.0 mm (0.9 in)
2004	36.8 mm (1.4 in)
2005	31.0 mm (1.2 in)
2006	22.0 mm (0.9 in)
2007	43.8 mm (1.7 in)

Wettest five days (Rx5day)

The wettest five days of the year at Byrock Post Office, 1890 to 2007. The record is 262.6 mm (10.3 in) in 1896, marked on the chart; the median year is 58.4 mm (2.3 in).

Wettest five days (Rx5day) at Byrock Post Office by year
Year	Wettest five days (Rx5day)
1890	27.1 mm (1.1 in)
1891	140.7 mm (5.5 in)
1892	44.5 mm (1.8 in)
1893	59.2 mm (2.3 in)
1894	69.1 mm (2.7 in)
1895	73.7 mm (2.9 in)
1896	262.6 mm (10.3 in)
1897	66.3 mm (2.6 in)
1898	74.2 mm (2.9 in)
1899	69.0 mm (2.7 in)
1900	48.3 mm (1.9 in)
1901	39.4 mm (1.6 in)
1902	94.2 mm (3.7 in)
1903	48.5 mm (1.9 in)
1904	38.6 mm (1.5 in)
1905	129.8 mm (5.1 in)
1906	91.5 mm (3.6 in)
1907	49.8 mm (2.0 in)
1908	49.3 mm (1.9 in)
1909	42.0 mm (1.7 in)
1910	81.5 mm (3.2 in)
1911	71.6 mm (2.8 in)
1912	58.4 mm (2.3 in)
1913	101.6 mm (4.0 in)
1914	58.4 mm (2.3 in)
1915	68.4 mm (2.7 in)
1916	54.6 mm (2.1 in)
1917	62.5 mm (2.5 in)
1918	40.9 mm (1.6 in)
1919	34.6 mm (1.4 in)
1920	38.6 mm (1.5 in)
1921	68.9 mm (2.7 in)
1923	6.9 mm (0.27 in)
1925	42.4 mm (1.7 in)
1926	80.8 mm (3.2 in)
1927	66.5 mm (2.6 in)
1928	65.7 mm (2.6 in)
1929	20.3 mm (0.8 in)
1930	57.9 mm (2.3 in)
1931	61.0 mm (2.4 in)
1932	50.8 mm (2.0 in)
1933	77.7 mm (3.1 in)
1934	63.2 mm (2.5 in)
1935	40.8 mm (1.6 in)
1936	126.1 mm (5.0 in)
1937	56.6 mm (2.2 in)
1938	56.9 mm (2.2 in)
1939	102.9 mm (4.1 in)
1940	100.7 mm (4.0 in)
1941	156.3 mm (6.2 in)
1942	76.9 mm (3.0 in)
1943	66.0 mm (2.6 in)
1944	34.8 mm (1.4 in)
1945	52.1 mm (2.1 in)
1946	56.5 mm (2.2 in)
1947	98.8 mm (3.9 in)
1948	73.7 mm (2.9 in)
1949	116.8 mm (4.6 in)
1950	80.2 mm (3.2 in)
1951	38.1 mm (1.5 in)
1952	54.9 mm (2.2 in)
1953	45.3 mm (1.8 in)
1954	31.5 mm (1.2 in)
1955	24.6 mm (1.0 in)
1956	106.7 mm (4.2 in)
1957	32.2 mm (1.3 in)
1958	44.5 mm (1.8 in)
1959	32.7 mm (1.3 in)
1960	64.0 mm (2.5 in)
1961	89.5 mm (3.5 in)
1962	76.9 mm (3.0 in)
1963	134.7 mm (5.3 in)
1964	36.1 mm (1.4 in)
1965	22.8 mm (0.9 in)
1966	49.2 mm (1.9 in)
1967	48.0 mm (1.9 in)
1968	99.6 mm (3.9 in)
1969	170.1 mm (6.7 in)
1970	54.6 mm (2.1 in)
1971	66.5 mm (2.6 in)
1972	51.6 mm (2.0 in)
1973	99.9 mm (3.9 in)
1974	100.4 mm (4.0 in)
1975	41.6 mm (1.6 in)
1976	141.4 mm (5.6 in)
1977	79.4 mm (3.1 in)
1978	53.2 mm (2.1 in)
1979	54.2 mm (2.1 in)
1980	31.8 mm (1.3 in)
1981	62.4 mm (2.5 in)
1982	64.0 mm (2.5 in)
1983	71.4 mm (2.8 in)
1984	43.0 mm (1.7 in)
1985	39.6 mm (1.6 in)
1986	47.8 mm (1.9 in)
1987	33.2 mm (1.3 in)
1988	63.2 mm (2.5 in)
1989	64.6 mm (2.5 in)
1990	44.6 mm (1.8 in)
1991	39.0 mm (1.5 in)
1992	48.4 mm (1.9 in)
1993	79.2 mm (3.1 in)
1994	52.2 mm (2.1 in)
1995	128.6 mm (5.1 in)
1996	163.2 mm (6.4 in)
1997	78.0 mm (3.1 in)
1998	104.8 mm (4.1 in)
1999	86.6 mm (3.4 in)
2000	177.2 mm (7.0 in)
2001	29.0 mm (1.1 in)
2002	43.6 mm (1.7 in)
2003	36.9 mm (1.5 in)
2004	46.8 mm (1.8 in)
2005	52.8 mm (2.1 in)
2006	26.1 mm (1.0 in)
2007	52.0 mm (2.0 in)

Longest dry spell (CDD)

The longest dry spell of the year at Byrock Post Office, 1890 to 2007. The record is 116 days in 1902, marked on the chart; the median year is 50 days.

Longest dry spell (CDD) at Byrock Post Office by year
Year	Longest dry spell (CDD)
1890	23 days
1891	36 days
1892	60 days
1893	41 days
1894	32 days
1895	49 days
1896	28 days
1897	101 days
1898	64 days
1899	44 days
1900	63 days
1901	70 days
1902	116 days
1903	40 days
1904	34 days
1905	40 days
1906	55 days
1907	55 days
1908	39 days
1909	32 days
1910	65 days
1911	54 days
1912	90 days
1913	51 days
1914	79 days
1915	69 days
1916	39 days
1917	31 days
1918	48 days
1919	34 days
1920	72 days
1921	34 days
1923	16 days
1925	12 days
1926	67 days
1927	90 days
1928	75 days
1929	92 days
1930	34 days
1931	60 days
1932	44 days
1933	38 days
1934	56 days
1935	101 days
1936	72 days
1937	80 days
1938	47 days
1939	49 days
1940	72 days
1941	70 days
1942	48 days
1943	30 days
1944	58 days
1945	59 days
1946	80 days
1947	27 days
1948	41 days
1949	29 days
1950	45 days
1951	62 days
1952	42 days
1953	49 days
1954	51 days
1955	23 days
1956	55 days
1957	98 days
1958	39 days
1959	74 days
1960	36 days
1961	50 days
1962	53 days
1963	66 days
1964	44 days
1965	100 days
1966	38 days
1967	72 days
1968	54 days
1969	47 days
1970	67 days
1971	86 days
1972	47 days
1973	38 days
1974	43 days
1975	92 days
1976	71 days
1977	95 days
1978	39 days
1979	49 days
1980	46 days
1981	44 days
1982	57 days
1983	29 days
1984	38 days
1985	35 days
1986	60 days
1987	32 days
1988	48 days
1989	77 days
1990	40 days
1991	71 days
1992	70 days
1993	64 days
1994	107 days
1995	49 days
1996	99 days
1997	60 days
1998	49 days
1999	36 days
2000	47 days
2001	30 days
2002	82 days
2003	39 days
2004	44 days
2005	55 days
2006	53 days
2007	57 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

103 years, 1892 to 2006

A day with at least 44.9 mm (1.8 in) of rain is expected about once in 2 years. A day with at least 147.8 mm (5.8 in) of rain is expected about once in 100 years.

Rainfall return levels at Byrock 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	44.9 mm (1.8 in)
5 years	65.4 mm (2.6 in)
10 years	81.5 mm (3.2 in)
25 years	105.0 mm (4.1 in)
50 years	125.2 mm (4.9 in)
100 years	147.8 mm (5.8 in)

The levels come from a generalised extreme value (GEV) distribution fitted by L-moments to the wettest-day total of each year, 103 years of values from 1892 to 2006.

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: 146.3 mm (5.8 in) in 1969; 124.4 mm (4.9 in) in 1976; 119.9 mm (4.7 in) in 1896.

Download the Data

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