Grass Patch Weather Records (ASN00012033)

Record envelope, standing records and threshold days for Grass Patch (ASN00012033), Australia, with 104 years of record.

Key Facts for Grass Patch

Grass Patch (ASN00012033) is a weather station in Australia at -33.23 latitude and 121.74 longitude, 210 m (689 ft) above sea level.
The station reports from 1906 to 2009, 104 years of record.
0 records set at Grass Patch still stand.
Records are tracked for prcp: an element needs 30 years of data to be eligible.
Grass Patch set a daily record precipitation of 24.4 mm (1.0 in) on 29 January 2009.

About the Station

Location: Australia, -33.23 latitude, 121.74 longitude.
Elevation: 210 m (689 ft).
Period of record: 1906 to 2009, 104 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 Grass Patch. 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 Grass Patch, 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 Grass Patch still stand.

All-Time Record Progression

1 new records

1 all-time records were set at Grass Patch between 12 January 1939 and 12 January 1939. Each dot is a new record.

Wettest Day of Each Month

Jan: 100.3 mm (3.9 in)

The wettest day on record for each calendar month at Grass Patch. The most was 100.3 mm (3.9 in) on 12 January 1939.

Record daily precipitation for each month at Grass Patch
Month	Record daily precipitation (mm)	Date
Jan	100.3 mm (3.9 in)	12 January 1939
Feb	71.9 mm (2.8 in)	14 February 1958
Mar	71.0 mm (2.8 in)	11 March 2000
Apr	56.9 mm (2.2 in)	17 April 1961
May	48.3 mm (1.9 in)	24 May 1911
Jun	40.4 mm (1.6 in)	24 June 1931
Jul	31.0 mm (1.2 in)	18 July 2003
Aug	58.0 mm (2.3 in)	24 August 1982
Sep	65.5 mm (2.6 in)	19 September 1951
Oct	43.2 mm (1.7 in)	23 October 1914
Nov	40.1 mm (1.6 in)	2 November 1939
Dec	36.2 mm (1.4 in)	1 December 1999

Latest Records

Latest records at Grass Patch
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
29 January 2009	Grass Patch, AU	daily rain	24.4 mm (1.0 in)	13.7 mm (0.5 in)	40 years	20 of 100 (Routine)
28 January 2009	Grass Patch, AU	daily rain	58.4 mm (2.3 in)	49.0 mm (1.9 in)	51 years	65 of 100 (Major)
20 January 2009	Grass Patch, AU	daily rain	11.8 mm (0.5 in)	5.4 mm (0.21 in)	98 years	20 of 100 (Routine)
19 January 2009	Grass Patch, AU	daily rain	15.2 mm (0.6 in)	5.8 mm (0.23 in)	73 years	20 of 100 (Routine)
4 January 2007	Grass Patch, AU	daily rain	38.0 mm (1.5 in)	15.8 mm (0.6 in)	0 years	23 of 100 (Routine)
2 April 2006	Grass Patch, AU	daily rain	7.8 mm (0.31 in)	1.4 mm (0.06 in)	41 years	20 of 100 (Routine)
2 March 2006	Grass Patch, AU	daily rain	16.2 mm (0.6 in)	8.2 mm (0.32 in)	5 years	20 of 100 (Routine)
8 January 2006	Grass Patch, AU	daily rain	12.2 mm (0.5 in)	1.2 mm (0.05 in)	11 years	14 of 100 (Routine)
4 January 2006	Grass Patch, AU	daily rain	22.2 mm (0.9 in)	19.2 mm (0.8 in)	46 years	20 of 100 (Routine)
3 January 2006	Grass Patch, AU	daily rain	58.8 mm (2.3 in)	43.6 mm (1.7 in)	47 years	63 of 100 (Major)
4 May 2005	Grass Patch, AU	daily rain	37.4 mm (1.5 in)	22.4 mm (0.9 in)	96 years	72 of 100 (Major)
1 April 2005	Grass Patch, AU	daily rain	30.6 mm (1.2 in)	6.5 mm (0.26 in)	71 years	40 of 100 (Notable)
7 September 2004	Grass Patch, AU	daily rain	12.2 mm (0.5 in)	1.5 mm (0.06 in)	87 years	20 of 100 (Routine)
8 July 2004	Grass Patch, AU	daily rain	20.0 mm (0.8 in)	2.0 mm (0.08 in)	40 years	20 of 100 (Routine)
14 April 2004	Grass Patch, AU	daily rain	4.4 mm (0.17 in)	0.1 mm (0.00 in)	48 years	20 of 100 (Routine)
13 April 2004	Grass Patch, AU	daily rain	13.0 mm (0.5 in)	0.3 mm (0.01 in)	73 years	20 of 100 (Routine)
2 March 2004	Grass Patch, AU	daily rain (Tie)	8.0 mm (0.31 in)	tie	4 years	2 of 100 (Routine)
25 November 2003	Grass Patch, AU	daily rain (Tie)	16.0 mm (0.6 in)	tie	82 years	8 of 100 (Routine)
30 September 2003	Grass Patch, AU	daily rain	14.0 mm (0.6 in)	3.4 mm (0.13 in)	1 year	15 of 100 (Routine)
23 July 2003	Grass Patch, AU	daily rain	15.7 mm (0.6 in)	0.7 mm (0.03 in)	24 years	17 of 100 (Routine)

Extremes by Year

1906 to 2009

Yearly extremes at Grass Patch: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Wettest day (Rx1day)	100.3 mm (3.9 in)	1939	29.4 mm (1.2 in)	102
Wettest five days (Rx5day)	170.2 mm (6.7 in)	1999	45.8 mm (1.8 in)	101
Longest dry spell (CDD)	109 days	1946	39 days	101

Wettest day (Rx1day)

The wettest day of the year at Grass Patch, 1906 to 2009. The record is 100.3 mm (3.9 in) in 1939, marked on the chart; the median year is 29.4 mm (1.2 in).

Wettest day (Rx1day) at Grass Patch by year
Year	Wettest day (Rx1day)
1906	0.0 mm (0.00 in)
1907	17.3 mm (0.7 in)
1908	17.8 mm (0.7 in)
1909	22.9 mm (0.9 in)
1910	16.5 mm (0.6 in)
1911	48.3 mm (1.9 in)
1912	25.4 mm (1.0 in)
1913	48.3 mm (1.9 in)
1914	43.2 mm (1.7 in)
1915	40.6 mm (1.6 in)
1916	16.8 mm (0.7 in)
1917	40.6 mm (1.6 in)
1918	25.9 mm (1.0 in)
1919	41.9 mm (1.6 in)
1920	30.7 mm (1.2 in)
1921	42.4 mm (1.7 in)
1922	33.0 mm (1.3 in)
1923	27.2 mm (1.1 in)
1924	25.4 mm (1.0 in)
1925	26.4 mm (1.0 in)
1926	33.0 mm (1.3 in)
1927	50.8 mm (2.0 in)
1928	24.1 mm (0.9 in)
1929	33.8 mm (1.3 in)
1930	31.0 mm (1.2 in)
1931	40.4 mm (1.6 in)
1932	25.7 mm (1.0 in)
1933	31.2 mm (1.2 in)
1934	38.4 mm (1.5 in)
1935	17.8 mm (0.7 in)
1936	31.0 mm (1.2 in)
1937	27.9 mm (1.1 in)
1938	40.6 mm (1.6 in)
1939	100.3 mm (3.9 in)
1940	14.5 mm (0.6 in)
1941	8.6 mm (0.34 in)
1942	22.6 mm (0.9 in)
1943	20.1 mm (0.8 in)
1944	47.5 mm (1.9 in)
1945	15.2 mm (0.6 in)
1946	33.8 mm (1.3 in)
1947	27.7 mm (1.1 in)
1948	64.5 mm (2.5 in)
1949	24.6 mm (1.0 in)
1950	26.2 mm (1.0 in)
1951	65.5 mm (2.6 in)
1952	41.1 mm (1.6 in)
1953	37.6 mm (1.5 in)
1954	14.2 mm (0.6 in)
1955	26.2 mm (1.0 in)
1956	17.0 mm (0.7 in)
1957	17.0 mm (0.7 in)
1958	71.9 mm (2.8 in)
1959	38.9 mm (1.5 in)
1960	19.8 mm (0.8 in)
1961	56.9 mm (2.2 in)
1962	25.9 mm (1.0 in)
1963	27.7 mm (1.1 in)
1964	20.3 mm (0.8 in)
1965	29.2 mm (1.1 in)
1966	17.8 mm (0.7 in)
1967	19.1 mm (0.8 in)
1968	31.8 mm (1.3 in)
1969	16.5 mm (0.6 in)
1970	64.0 mm (2.5 in)
1971	43.7 mm (1.7 in)
1972	26.2 mm (1.0 in)
1973	29.5 mm (1.2 in)
1974	24.0 mm (0.9 in)
1976	30.4 mm (1.2 in)
1977	26.0 mm (1.0 in)
1978	43.0 mm (1.7 in)
1979	30.0 mm (1.2 in)
1980	19.2 mm (0.8 in)
1981	22.2 mm (0.9 in)
1982	58.0 mm (2.3 in)
1983	25.0 mm (1.0 in)
1984	19.0 mm (0.7 in)
1985	29.6 mm (1.2 in)
1986	25.0 mm (1.0 in)
1987	27.0 mm (1.1 in)
1988	30.0 mm (1.2 in)
1989	37.6 mm (1.5 in)
1990	21.0 mm (0.8 in)
1991	30.0 mm (1.2 in)
1992	45.7 mm (1.8 in)
1993	22.6 mm (0.9 in)
1994	18.3 mm (0.7 in)
1995	30.0 mm (1.2 in)
1996	24.4 mm (1.0 in)
1997	33.0 mm (1.3 in)
1998	16.6 mm (0.7 in)
1999	78.0 mm (3.1 in)
2000	71.0 mm (2.8 in)
2001	41.2 mm (1.6 in)
2002	28.2 mm (1.1 in)
2003	31.0 mm (1.2 in)
2004	20.0 mm (0.8 in)
2005	37.4 mm (1.5 in)
2006	58.8 mm (2.3 in)
2007	38.0 mm (1.5 in)
2009	58.4 mm (2.3 in)

Wettest five days (Rx5day)

The wettest five days of the year at Grass Patch, 1906 to 2009. The record is 170.2 mm (6.7 in) in 1999, marked on the chart; the median year is 45.8 mm (1.8 in).

Wettest five days (Rx5day) at Grass Patch by year
Year	Wettest five days (Rx5day)
1906	0.0 mm (0.00 in)
1907	27.0 mm (1.1 in)
1908	28.3 mm (1.1 in)
1909	42.0 mm (1.7 in)
1910	29.5 mm (1.2 in)
1911	79.8 mm (3.1 in)
1912	33.0 mm (1.3 in)
1913	52.3 mm (2.1 in)
1914	93.7 mm (3.7 in)
1915	81.0 mm (3.2 in)
1916	32.6 mm (1.3 in)
1917	64.0 mm (2.5 in)
1918	48.6 mm (1.9 in)
1919	48.6 mm (1.9 in)
1920	41.9 mm (1.6 in)
1921	67.0 mm (2.6 in)
1922	68.0 mm (2.7 in)
1923	56.9 mm (2.2 in)
1924	37.4 mm (1.5 in)
1925	43.6 mm (1.7 in)
1926	42.1 mm (1.7 in)
1927	50.8 mm (2.0 in)
1928	24.9 mm (1.0 in)
1929	51.3 mm (2.0 in)
1930	60.7 mm (2.4 in)
1931	65.6 mm (2.6 in)
1932	38.7 mm (1.5 in)
1933	38.1 mm (1.5 in)
1934	51.2 mm (2.0 in)
1935	32.1 mm (1.3 in)
1936	39.4 mm (1.6 in)
1937	49.2 mm (1.9 in)
1938	68.5 mm (2.7 in)
1939	128.8 mm (5.1 in)
1940	15.5 mm (0.6 in)
1941	11.1 mm (0.4 in)
1942	35.5 mm (1.4 in)
1943	48.1 mm (1.9 in)
1944	64.0 mm (2.5 in)
1945	28.0 mm (1.1 in)
1946	54.1 mm (2.1 in)
1947	42.5 mm (1.7 in)
1948	68.3 mm (2.7 in)
1949	30.4 mm (1.2 in)
1950	51.1 mm (2.0 in)
1951	80.3 mm (3.2 in)
1952	46.2 mm (1.8 in)
1953	57.6 mm (2.3 in)
1954	22.8 mm (0.9 in)
1955	73.7 mm (2.9 in)
1956	18.0 mm (0.7 in)
1957	25.9 mm (1.0 in)
1958	80.3 mm (3.2 in)
1959	48.2 mm (1.9 in)
1960	30.0 mm (1.2 in)
1961	93.8 mm (3.7 in)
1962	34.8 mm (1.4 in)
1963	43.4 mm (1.7 in)
1964	55.1 mm (2.2 in)
1965	41.9 mm (1.6 in)
1966	23.7 mm (0.9 in)
1967	30.0 mm (1.2 in)
1968	45.8 mm (1.8 in)
1969	27.7 mm (1.1 in)
1970	73.7 mm (2.9 in)
1971	74.2 mm (2.9 in)
1972	32.8 mm (1.3 in)
1973	58.2 mm (2.3 in)
1974	24.0 mm (0.9 in)
1976	37.4 mm (1.5 in)
1977	34.4 mm (1.4 in)
1978	43.0 mm (1.7 in)
1979	41.6 mm (1.6 in)
1980	22.4 mm (0.9 in)
1981	31.6 mm (1.2 in)
1982	58.0 mm (2.3 in)
1983	50.0 mm (2.0 in)
1984	35.0 mm (1.4 in)
1985	46.0 mm (1.8 in)
1986	58.0 mm (2.3 in)
1987	60.4 mm (2.4 in)
1988	64.0 mm (2.5 in)
1989	55.2 mm (2.2 in)
1990	30.6 mm (1.2 in)
1991	33.2 mm (1.3 in)
1992	67.5 mm (2.7 in)
1993	31.3 mm (1.2 in)
1994	24.9 mm (1.0 in)
1995	45.0 mm (1.8 in)
1996	28.0 mm (1.1 in)
1997	56.6 mm (2.2 in)
1998	27.2 mm (1.1 in)
1999	170.2 mm (6.7 in)
2000	84.8 mm (3.3 in)
2001	58.6 mm (2.3 in)
2002	51.0 mm (2.0 in)
2003	43.7 mm (1.7 in)
2004	24.0 mm (0.9 in)
2005	59.6 mm (2.3 in)
2006	81.4 mm (3.2 in)
2007	n/a
2009	89.8 mm (3.5 in)

Longest dry spell (CDD)

The longest dry spell of the year at Grass Patch, 1906 to 2009. The record is 109 days in 1946, marked on the chart; the median year is 39 days.

Longest dry spell (CDD) at Grass Patch by year
Year	Longest dry spell (CDD)
1906	31 days
1907	42 days
1908	27 days
1909	50 days
1910	39 days
1911	43 days
1912	32 days
1913	50 days
1914	44 days
1915	49 days
1916	61 days
1917	27 days
1918	36 days
1919	31 days
1920	53 days
1921	44 days
1922	59 days
1923	46 days
1924	39 days
1925	35 days
1926	37 days
1927	53 days
1928	54 days
1929	25 days
1930	64 days
1931	45 days
1932	52 days
1933	42 days
1934	30 days
1935	30 days
1936	67 days
1937	37 days
1938	30 days
1939	40 days
1940	52 days
1941	18 days
1942	32 days
1943	31 days
1944	53 days
1945	78 days
1946	109 days
1947	33 days
1948	38 days
1949	70 days
1950	95 days
1951	26 days
1952	22 days
1953	47 days
1954	86 days
1955	25 days
1956	38 days
1957	61 days
1958	40 days
1959	41 days
1960	29 days
1961	48 days
1962	69 days
1963	51 days
1964	57 days
1965	44 days
1966	42 days
1967	56 days
1968	33 days
1969	35 days
1970	37 days
1971	24 days
1972	50 days
1973	33 days
1974	26 days
1976	44 days
1977	49 days
1978	28 days
1979	39 days
1980	48 days
1981	34 days
1982	26 days
1983	35 days
1984	30 days
1985	27 days
1986	45 days
1987	60 days
1988	36 days
1989	44 days
1990	29 days
1991	42 days
1992	21 days
1993	38 days
1994	53 days
1995	40 days
1996	35 days
1997	32 days
1998	31 days
1999	24 days
2000	20 days
2001	29 days
2002	24 days
2003	42 days
2004	40 days
2005	72 days
2006	28 days
2007	n/a
2009	26 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

89 years, 1907 to 2006

A day with at least 30.2 mm (1.2 in) of rain is expected about once in 2 years. A day with at least 94.0 mm (3.7 in) of rain is expected about once in 100 years.

Rainfall return levels at Grass Patch: the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	30.2 mm (1.2 in)
5 years	43.4 mm (1.7 in)
10 years	53.5 mm (2.1 in)
25 years	68.0 mm (2.7 in)
50 years	80.4 mm (3.2 in)
100 years	94.0 mm (3.7 in)	Longer than the 89 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, 89 years of values from 1907 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: 100.3 mm (3.9 in) in 1939; 78.0 mm (3.1 in) in 1999; 71.9 mm (2.8 in) in 1958.

Download the Data

Data for Grass Patch standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Grass Patch 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