Koonadgin Weather Records (ASN00010298)

Record envelope, standing records and threshold days for Koonadgin (ASN00010298), Australia, with 96 years of record.

Key Facts for Koonadgin

Koonadgin (ASN00010298) is a weather station in Australia at -31.56 latitude and 118.58 longitude, 350 m (1,148 ft) above sea level.
The station reports from 1926 to 2021, 96 years of record.
0 records set at Koonadgin still stand.
Records are tracked for prcp: an element needs 30 years of data to be eligible.
Koonadgin set a daily record precipitation of 13.0 mm (0.5 in) on 27 October 2021.

About the Station

Location: Australia, -31.56 latitude, 118.58 longitude.
Elevation: 350 m (1,148 ft).
Period of record: 1926 to 2021, 96 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 Koonadgin. 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 Koonadgin, 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 Koonadgin still stand.

Wettest Day of Each Month

Mar: 95.3 mm (3.8 in)

The wettest day on record for each calendar month at Koonadgin. The most was 95.3 mm (3.8 in) on 25 March 1953.

Record daily precipitation for each month at Koonadgin
Month	Record daily precipitation (mm)	Date
Jan	68.0 mm (2.7 in)	5 January 2011
Feb	70.9 mm (2.8 in)	14 February 1939
Mar	95.3 mm (3.8 in)	25 March 1953
Apr	56.2 mm (2.2 in)	4 April 1974
May	47.0 mm (1.9 in)	9 May 1939
Jun	66.8 mm (2.6 in)	22 June 1972
Jul	52.8 mm (2.1 in)	21 July 1960
Aug	38.6 mm (1.5 in)	11 August 1931
Sep	28.4 mm (1.1 in)	18 September 1932
Oct	42.0 mm (1.7 in)	19 October 2014
Nov	58.5 mm (2.3 in)	6 November 1996
Dec	58.6 mm (2.3 in)	6 December 2011

Latest Records

Latest records at Koonadgin
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
27 October 2021	Koonadgin, AU	daily rain	13.0 mm (0.5 in)	7.8 mm (0.31 in)	14 years	20 of 100 (Routine)
17 August 2021	Koonadgin, AU	daily rain	16.0 mm (0.6 in)	0.4 mm (0.02 in)	18 years	14 of 100 (Routine)
5 May 2021	Koonadgin, AU	daily rain	41.0 mm (1.6 in)	9.8 mm (0.39 in)	56 years	38 of 100 (Notable)
3 March 2021	Koonadgin, AU	daily rain	52.0 mm (2.0 in)	32.4 mm (1.3 in)	48 years	51 of 100 (Notable)
6 February 2021	Koonadgin, AU	daily rain	7.0 mm (0.28 in)	2.2 mm (0.09 in)	84 years	20 of 100 (Routine)
9 December 2020	Koonadgin, AU	daily rain	7.0 mm (0.28 in)	1.9 mm (0.07 in)	79 years	20 of 100 (Routine)
26 September 2020	Koonadgin, AU	daily rain	6.0 mm (0.24 in)	0.4 mm (0.02 in)	55 years	20 of 100 (Routine)
15 August 2020	Koonadgin, AU	daily rain	18.0 mm (0.7 in)	4.3 mm (0.17 in)	49 years	20 of 100 (Routine)
10 August 2020	Koonadgin, AU	daily rain	21.0 mm (0.8 in)	0.8 mm (0.03 in)	43 years	20 of 100 (Routine)
28 February 2020	Koonadgin, AU	daily rain	10.0 mm (0.4 in)	2.8 mm (0.11 in)	44 years	20 of 100 (Routine)
4 July 2019	Koonadgin, AU	daily rain	18.0 mm (0.7 in)	5.8 mm (0.23 in)	88 years	20 of 100 (Routine)
3 April 2019	Koonadgin, AU	daily rain	19.0 mm (0.7 in)	11.8 mm (0.5 in)	32 years	20 of 100 (Routine)
3 December 2018	Koonadgin, AU	daily rain	9.2 mm (0.36 in)	0.6 mm (0.02 in)	48 years	20 of 100 (Routine)
14 October 2018	Koonadgin, AU	daily rain	16.6 mm (0.7 in)	7.0 mm (0.28 in)	19 years	20 of 100 (Routine)
30 August 2018	Koonadgin, AU	daily rain	22.0 mm (0.9 in)	9.3 mm (0.37 in)	84 years	20 of 100 (Routine)
4 August 2018	Koonadgin, AU	daily rain (Tie)	21.0 mm (0.8 in)	tie	24 years	4 of 100 (Routine)
24 September 2017	Koonadgin, AU	monthly rain (Tie)	28.4 mm (1.1 in)	tie	85 years	11 of 100 (Routine)
8 August 2017	Koonadgin, AU	daily rain	19.4 mm (0.8 in)	1.4 mm (0.06 in)	84 years	20 of 100 (Routine)
8 July 2016	Koonadgin, AU	daily rain	20.0 mm (0.8 in)	1.6 mm (0.06 in)	7 years	14 of 100 (Routine)
28 June 2016	Koonadgin, AU	daily rain	21.0 mm (0.8 in)	6.8 mm (0.27 in)	20 years	20 of 100 (Routine)

Extremes by Year

1926 to 2021

Yearly extremes at Koonadgin: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Wettest day (Rx1day)	95.3 mm (3.8 in)	1953	31.2 mm (1.2 in)	95
Wettest five days (Rx5day)	106.2 mm (4.2 in)	1943	46.7 mm (1.8 in)	95
Longest dry spell (CDD)	127 days	1950	49 days	95

Wettest day (Rx1day)

The wettest day of the year at Koonadgin, 1926 to 2021. The record is 95.3 mm (3.8 in) in 1953, marked on the chart; the median year is 31.2 mm (1.2 in).

Wettest day (Rx1day) at Koonadgin by year
Year	Wettest day (Rx1day)
1926	33.3 mm (1.3 in)
1927	29.5 mm (1.2 in)
1928	22.9 mm (0.9 in)
1929	41.9 mm (1.6 in)
1930	47.5 mm (1.9 in)
1931	38.6 mm (1.5 in)
1932	36.1 mm (1.4 in)
1933	28.2 mm (1.1 in)
1934	49.0 mm (1.9 in)
1935	37.6 mm (1.5 in)
1936	29.7 mm (1.2 in)
1937	39.6 mm (1.6 in)
1938	19.1 mm (0.8 in)
1939	70.9 mm (2.8 in)
1940	20.3 mm (0.8 in)
1941	13.7 mm (0.5 in)
1942	50.8 mm (2.0 in)
1943	38.1 mm (1.5 in)
1944	46.0 mm (1.8 in)
1945	19.1 mm (0.8 in)
1946	30.5 mm (1.2 in)
1947	22.9 mm (0.9 in)
1949	6.4 mm (0.25 in)
1950	23.1 mm (0.9 in)
1951	55.9 mm (2.2 in)
1952	27.7 mm (1.1 in)
1953	95.3 mm (3.8 in)
1954	44.5 mm (1.8 in)
1955	34.3 mm (1.4 in)
1956	21.8 mm (0.9 in)
1957	15.7 mm (0.6 in)
1958	19.6 mm (0.8 in)
1959	22.4 mm (0.9 in)
1960	52.8 mm (2.1 in)
1961	40.9 mm (1.6 in)
1962	19.3 mm (0.8 in)
1963	43.2 mm (1.7 in)
1964	22.4 mm (0.9 in)
1965	35.1 mm (1.4 in)
1966	53.3 mm (2.1 in)
1967	32.8 mm (1.3 in)
1968	30.2 mm (1.2 in)
1969	22.1 mm (0.9 in)
1970	54.9 mm (2.2 in)
1971	63.5 mm (2.5 in)
1972	66.8 mm (2.6 in)
1973	28.7 mm (1.1 in)
1974	56.2 mm (2.2 in)
1975	45.0 mm (1.8 in)
1976	18.6 mm (0.7 in)
1977	42.8 mm (1.7 in)
1978	29.4 mm (1.2 in)
1979	46.0 mm (1.8 in)
1980	16.4 mm (0.6 in)
1981	33.0 mm (1.3 in)
1982	18.4 mm (0.7 in)
1983	41.0 mm (1.6 in)
1984	28.0 mm (1.1 in)
1985	49.2 mm (1.9 in)
1986	28.2 mm (1.1 in)
1987	22.6 mm (0.9 in)
1988	27.6 mm (1.1 in)
1989	58.4 mm (2.3 in)
1990	44.8 mm (1.8 in)
1991	33.8 mm (1.3 in)
1992	43.2 mm (1.7 in)
1993	30.4 mm (1.2 in)
1994	21.0 mm (0.8 in)
1995	30.7 mm (1.2 in)
1996	58.5 mm (2.3 in)
1997	19.6 mm (0.8 in)
1998	31.2 mm (1.2 in)
1999	37.0 mm (1.5 in)
2000	42.6 mm (1.7 in)
2001	29.3 mm (1.2 in)
2002	31.2 mm (1.2 in)
2003	26.2 mm (1.0 in)
2004	27.0 mm (1.1 in)
2005	13.2 mm (0.5 in)
2006	39.0 mm (1.5 in)
2007	15.0 mm (0.6 in)
2008	18.5 mm (0.7 in)
2009	22.6 mm (0.9 in)
2010	34.0 mm (1.3 in)
2011	68.0 mm (2.7 in)
2012	32.4 mm (1.3 in)
2013	5.8 mm (0.23 in)
2014	42.0 mm (1.7 in)
2015	38.0 mm (1.5 in)
2016	70.4 mm (2.8 in)
2017	28.4 mm (1.1 in)
2018	22.0 mm (0.9 in)
2019	21.0 mm (0.8 in)
2020	24.0 mm (0.9 in)
2021	52.0 mm (2.0 in)

Wettest five days (Rx5day)

The wettest five days of the year at Koonadgin, 1926 to 2021. The record is 106.2 mm (4.2 in) in 1943, marked on the chart; the median year is 46.7 mm (1.8 in).

Wettest five days (Rx5day) at Koonadgin by year
Year	Wettest five days (Rx5day)
1926	41.2 mm (1.6 in)
1927	71.5 mm (2.8 in)
1928	45.5 mm (1.8 in)
1929	64.3 mm (2.5 in)
1930	85.4 mm (3.4 in)
1931	55.0 mm (2.2 in)
1932	46.7 mm (1.8 in)
1933	47.2 mm (1.9 in)
1934	80.5 mm (3.2 in)
1935	51.1 mm (2.0 in)
1936	36.3 mm (1.4 in)
1937	55.1 mm (2.2 in)
1938	26.7 mm (1.1 in)
1939	90.9 mm (3.6 in)
1940	20.3 mm (0.8 in)
1941	27.6 mm (1.1 in)
1942	67.8 mm (2.7 in)
1943	106.2 mm (4.2 in)
1944	49.3 mm (1.9 in)
1945	51.9 mm (2.0 in)
1946	47.0 mm (1.9 in)
1947	22.9 mm (0.9 in)
1949	6.4 mm (0.25 in)
1950	34.1 mm (1.3 in)
1951	55.9 mm (2.2 in)
1952	29.0 mm (1.1 in)
1953	105.4 mm (4.1 in)
1954	65.8 mm (2.6 in)
1955	81.0 mm (3.2 in)
1956	46.7 mm (1.8 in)
1957	35.0 mm (1.4 in)
1958	36.1 mm (1.4 in)
1959	36.4 mm (1.4 in)
1960	88.2 mm (3.5 in)
1961	53.1 mm (2.1 in)
1962	43.4 mm (1.7 in)
1963	53.1 mm (2.1 in)
1964	36.4 mm (1.4 in)
1965	43.5 mm (1.7 in)
1966	101.6 mm (4.0 in)
1967	44.5 mm (1.8 in)
1968	52.1 mm (2.1 in)
1969	28.5 mm (1.1 in)
1970	74.5 mm (2.9 in)
1971	90.9 mm (3.6 in)
1972	86.6 mm (3.4 in)
1973	43.2 mm (1.7 in)
1974	72.6 mm (2.9 in)
1975	59.2 mm (2.3 in)
1976	32.2 mm (1.3 in)
1977	65.3 mm (2.6 in)
1978	47.0 mm (1.9 in)
1979	47.6 mm (1.9 in)
1980	32.2 mm (1.3 in)
1981	38.0 mm (1.5 in)
1982	31.0 mm (1.2 in)
1983	57.6 mm (2.3 in)
1984	41.6 mm (1.6 in)
1985	56.1 mm (2.2 in)
1986	31.4 mm (1.2 in)
1987	34.8 mm (1.4 in)
1988	40.6 mm (1.6 in)
1989	65.4 mm (2.6 in)
1990	74.8 mm (2.9 in)
1991	55.0 mm (2.2 in)
1992	50.0 mm (2.0 in)
1993	36.8 mm (1.4 in)
1994	25.4 mm (1.0 in)
1995	46.9 mm (1.8 in)
1996	60.7 mm (2.4 in)
1997	30.8 mm (1.2 in)
1998	50.2 mm (2.0 in)
1999	78.0 mm (3.1 in)
2000	49.8 mm (2.0 in)
2001	45.6 mm (1.8 in)
2002	56.0 mm (2.2 in)
2003	27.8 mm (1.1 in)
2004	40.0 mm (1.6 in)
2005	24.2 mm (1.0 in)
2006	59.0 mm (2.3 in)
2007	27.0 mm (1.1 in)
2008	34.6 mm (1.4 in)
2009	27.0 mm (1.1 in)
2010	34.0 mm (1.3 in)
2011	68.0 mm (2.7 in)
2012	37.4 mm (1.5 in)
2013	12.4 mm (0.5 in)
2014	42.0 mm (1.7 in)
2015	38.0 mm (1.5 in)
2016	100.4 mm (4.0 in)
2017	38.4 mm (1.5 in)
2018	32.0 mm (1.3 in)
2019	32.0 mm (1.3 in)
2020	31.0 mm (1.2 in)
2021	56.6 mm (2.2 in)

Longest dry spell (CDD)

The longest dry spell of the year at Koonadgin, 1926 to 2021. The record is 127 days in 1950, marked on the chart; the median year is 49 days.

Longest dry spell (CDD) at Koonadgin by year
Year	Longest dry spell (CDD)
1926	24 days
1927	64 days
1928	41 days
1929	46 days
1930	63 days
1931	69 days
1932	55 days
1933	48 days
1934	46 days
1935	64 days
1936	44 days
1937	37 days
1938	56 days
1939	43 days
1940	121 days
1941	41 days
1942	67 days
1943	58 days
1944	55 days
1945	93 days
1946	72 days
1947	82 days
1949	25 days
1950	127 days
1951	34 days
1952	40 days
1953	49 days
1954	112 days
1955	32 days
1956	64 days
1957	40 days
1958	61 days
1959	34 days
1960	38 days
1961	57 days
1962	49 days
1963	42 days
1964	56 days
1965	73 days
1966	51 days
1967	40 days
1968	55 days
1969	57 days
1970	44 days
1971	35 days
1972	53 days
1973	45 days
1974	58 days
1975	58 days
1976	48 days
1977	49 days
1978	51 days
1979	31 days
1980	41 days
1981	43 days
1982	41 days
1983	61 days
1984	34 days
1985	45 days
1986	44 days
1987	76 days
1988	83 days
1989	51 days
1990	34 days
1991	63 days
1992	29 days
1993	42 days
1994	95 days
1995	41 days
1996	101 days
1997	49 days
1998	59 days
1999	34 days
2000	81 days
2001	57 days
2002	37 days
2003	47 days
2004	42 days
2005	57 days
2006	44 days
2007	101 days
2008	41 days
2009	43 days
2010	51 days
2011	23 days
2012	30 days
2013	23 days
2014	32 days
2015	48 days
2016	64 days
2017	44 days
2018	52 days
2019	61 days
2020	51 days
2021	47 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

80 years, 1926 to 2021

A day with at least 32.6 mm (1.3 in) of rain is expected about once in 2 years. A day with at least 81.1 mm (3.2 in) of rain is expected about once in 100 years.

Rainfall return levels at Koonadgin: the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	32.6 mm (1.3 in)
5 years	45.6 mm (1.8 in)
10 years	54.2 mm (2.1 in)
25 years	65.1 mm (2.6 in)
50 years	73.1 mm (2.9 in)
100 years	81.1 mm (3.2 in)	Longer than the 80 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, 80 years of values from 1926 to 2021.

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: 95.3 mm (3.8 in) in 1953; 66.8 mm (2.6 in) in 1972; 63.5 mm (2.5 in) in 1971.

Download the Data

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