Orchard Hills Treatment Works Weather Records (ASN00067084)

Record envelope, standing records and threshold days for Orchard Hills Treatment Works (ASN00067084), Australia, with 56 years of record.

Key Facts for Orchard Hills Treatment Works

Orchard Hills Treatment Works (ASN00067084) is a weather station in Australia at -33.80 latitude and 150.71 longitude, 93 m (305 ft) above sea level.
The station reports from 1970 to 2025, 56 years of record.
1,464 records set at Orchard Hills Treatment Works still stand.
Records are tracked for prcp: an element needs 30 years of data to be eligible.
Orchard Hills Treatment Works set a daily record precipitation of 27.0 mm (1.1 in) on 1 November 2025.

About the Station

Location: Australia, -33.80 latitude, 150.71 longitude.
Elevation: 93 m (305 ft).
Period of record: 1970 to 2025, 56 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 Orchard Hills Treatment Works. 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 Orchard Hills Treatment Works, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	42.0 C (107.6 F)	6.5 C (43.7 F)	n/a	n/a
Feb	42.5 C (108.5 F)	11.1 C (52.0 F)	n/a	n/a
Mar	40.4 C (104.7 F)	8.0 C (46.4 F)	n/a	n/a
Apr	37.0 C (98.6 F)	3.5 C (38.3 F)	n/a	n/a
May	27.4 C (81.3 F)	1.5 C (34.7 F)	n/a	n/a
Jun	25.0 C (77.0 F)	-1.1 C (30.0 F)	n/a	n/a
Jul	28.0 C (82.4 F)	-1.5 C (29.3 F)	n/a	n/a
Aug	30.6 C (87.1 F)	-1.0 C (30.2 F)	n/a	n/a
Sep	35.2 C (95.4 F)	1.5 C (34.7 F)	n/a	n/a
Oct	40.0 C (104.0 F)	3.9 C (39.0 F)	n/a	n/a
Nov	42.5 C (108.5 F)	1.0 C (33.8 F)	n/a	n/a
Dec	40.5 C (104.9 F)	5.0 C (41.0 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Orchard Hills Treatment Works still stand. 1974 holds the most, with 112.

Standing records at Orchard Hills Treatment Works by the year they were set
Year set	Standing records
1970	3
1971	75
1972	107
1973	97
1974	112
1975	95
1976	63
1977	63
1978	88
1979	44
1980	95
1981	71
1982	86
1983	85
1984	56
1985	66
1986	62
1987	77
1988	76
1989	43

Wettest Day of Each Month

Aug: 241.0 mm (9.5 in)

The wettest day on record for each calendar month at Orchard Hills Treatment Works. The most was 241.0 mm (9.5 in) on 6 August 1986.

Record daily precipitation for each month at Orchard Hills Treatment Works
Month	Record daily precipitation (mm)	Date
Jan	110.0 mm (4.3 in)	29 January 2013
Feb	124.0 mm (4.9 in)	3 February 1990
Mar	134.0 mm (5.3 in)	21 March 2021
Apr	151.2 mm (6.0 in)	6 April 2024
May	136.2 mm (5.4 in)	1 May 1988
Jun	100.0 mm (3.9 in)	6 June 2016
Jul	118.6 mm (4.7 in)	3 July 2022
Aug	241.0 mm (9.5 in)	6 August 1986
Sep	73.0 mm (2.9 in)	25 September 1995
Oct	69.0 mm (2.7 in)	25 October 1987
Nov	68.0 mm (2.7 in)	3 November 1981
Dec	130.0 mm (5.1 in)	26 December 1978

Period of Record Coverage

1970 to 1989

20 years of record at Orchard Hills Treatment Works, 1970 to 1989. 5 years have data for under 90 percent of days and are left out of rankings: 1970, 1975, 1979, 1983, 1989.

Days with data per year at Orchard Hills Treatment Works
Year	Days with data	Share of year	Complete
1970	31	8%	No
1971	336	92%	Yes
1972	366	100%	Yes
1973	360	99%	Yes
1974	364	100%	Yes
1975	328	90%	No
1976	335	92%	Yes
1977	361	99%	Yes
1978	364	100%	Yes
1979	243	67%	No
1980	335	92%	Yes
1981	364	100%	Yes
1982	347	95%	Yes
1983	317	87%	No
1984	365	100%	Yes
1985	359	98%	Yes
1986	337	92%	Yes
1987	355	97%	Yes
1988	346	95%	Yes
1989	180	49%	No

Latest Records

Latest records at Orchard Hills Treatment Works
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
1 November 2025	Orchard Hills Treatment Works, AU	daily rain	27.0 mm (1.1 in)	1.8 mm (0.07 in)	47 years	20 of 100 (Routine)
11 September 2025	Orchard Hills Treatment Works, AU	daily rain	33.0 mm (1.3 in)	17.6 mm (0.7 in)	46 years	39 of 100 (Notable)
9 September 2025	Orchard Hills Treatment Works, AU	daily rain	4.4 mm (0.17 in)	0.2 mm (0.01 in)	18 years	10 of 100 (Routine)
21 August 2025	Orchard Hills Treatment Works, AU	daily rain	45.0 mm (1.8 in)	28.5 mm (1.1 in)	54 years	37 of 100 (Notable)
3 August 2025	Orchard Hills Treatment Works, AU	daily rain	24.2 mm (1.0 in)	7.7 mm (0.30 in)	8 years	11 of 100 (Routine)
31 July 2025	Orchard Hills Treatment Works, AU	daily rain	13.0 mm (0.5 in)	12.0 mm (0.5 in)	35 years	20 of 100 (Routine)
2 July 2025	Orchard Hills Treatment Works, AU	daily rain	41.0 mm (1.6 in)	27.0 mm (1.1 in)	26 years	31 of 100 (Routine)
23 May 2025	Orchard Hills Treatment Works, AU	daily rain	99.4 mm (3.9 in)	35.6 mm (1.4 in)	44 years	48 of 100 (Notable)
18 November 2024	Orchard Hills Treatment Works, AU	daily rain	15.2 mm (0.6 in)	4.4 mm (0.17 in)	24 years	16 of 100 (Routine)
30 September 2024	Orchard Hills Treatment Works, AU	daily rain	22.0 mm (0.9 in)	9.6 mm (0.38 in)	38 years	20 of 100 (Routine)
7 June 2024	Orchard Hills Treatment Works, AU	daily rain	26.0 mm (1.0 in)	4.1 mm (0.16 in)	18 years	13 of 100 (Routine)
12 May 2024	Orchard Hills Treatment Works, AU	daily rain	22.8 mm (0.9 in)	12.2 mm (0.5 in)	2 years	15 of 100 (Routine)
11 May 2024	Orchard Hills Treatment Works, AU	daily rain (Tie)	6.4 mm (0.25 in)	tie	2 years	1 of 100 (Routine)
6 April 2024	Orchard Hills Treatment Works, AU	monthly rain	151.2 mm (6.0 in)	67.2 mm (2.6 in)	35 years	65 of 100 (Major)
5 April 2024	Orchard Hills Treatment Works, AU	daily rain	68.4 mm (2.7 in)	42.4 mm (1.7 in)	20 years	46 of 100 (Notable)
20 December 2023	Orchard Hills Treatment Works, AU	daily rain	28.4 mm (1.1 in)	5.4 mm (0.21 in)	12 years	12 of 100 (Routine)
15 August 2023	Orchard Hills Treatment Works, AU	daily rain	10.4 mm (0.4 in)	2.4 mm (0.09 in)	2 years	6 of 100 (Routine)
14 August 2023	Orchard Hills Treatment Works, AU	daily rain	13.4 mm (0.5 in)	7.6 mm (0.30 in)	36 years	19 of 100 (Routine)
9 October 2022	Orchard Hills Treatment Works, AU	daily rain	53.6 mm (2.1 in)	41.6 mm (1.6 in)	32 years	54 of 100 (Notable)
6 October 2022	Orchard Hills Treatment Works, AU	daily rain	40.6 mm (1.6 in)	18.8 mm (0.7 in)	44 years	37 of 100 (Notable)

Extremes by Year

1970 to 2025

Yearly extremes at Orchard Hills Treatment Works: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	42.5 C (108.5 F)	1977	39.8 C (103.6 F)	20
Coldest night (TNn)	-1.5 C (29.3 F)	1978	0.5 C (32.9 F)	19
Wettest day (Rx1day)	241.0 mm (9.5 in)	1986	68.8 mm (2.7 in)	56
Wettest five days (Rx5day)	384.0 mm (15.1 in)	1986	130.6 mm (5.1 in)	56
Longest dry spell (CDD)	97 days	1992	31 days	56

Hottest day (TXx)

The hottest day of the year at Orchard Hills Treatment Works, 1970 to 2025. The record is 42.5 C (108.5 F) in 1977, marked on the chart; the median year is 39.8 C (103.6 F).

Hottest day (TXx) at Orchard Hills Treatment Works by year
Year	Hottest day (TXx)
1970	36.1 C (97.0 F)
1971	38.9 C (102.0 F)
1972	39.5 C (103.1 F)
1973	39.5 C (103.1 F)
1974	37.5 C (99.5 F)
1975	40.8 C (105.4 F)
1976	39.0 C (102.2 F)
1977	42.5 C (108.5 F)
1978	40.0 C (104.0 F)
1979	42.0 C (107.6 F)
1980	42.2 C (108.0 F)
1981	40.5 C (104.9 F)
1982	42.5 C (108.5 F)
1983	41.8 C (107.2 F)
1984	38.5 C (101.3 F)
1985	38.0 C (100.4 F)
1986	39.0 C (102.2 F)
1987	40.5 C (104.9 F)
1988	40.0 C (104.0 F)
1989	34.9 C (94.8 F)
1990	n/a
1991	n/a
1992	n/a
1993	n/a
1994	n/a
1995	n/a
1996	n/a
1997	n/a
1998	n/a
1999	n/a
2000	n/a
2001	n/a
2002	n/a
2003	n/a
2004	n/a
2005	n/a
2006	n/a
2007	n/a
2008	n/a
2009	n/a
2010	n/a
2011	n/a
2012	n/a
2013	n/a
2014	n/a
2015	n/a
2016	n/a
2017	n/a
2018	n/a
2019	n/a
2020	n/a
2021	n/a
2022	n/a
2023	n/a
2024	n/a
2025	n/a

Coldest night (TNn)

The coldest night of the year at Orchard Hills Treatment Works, 1970 to 2025. The record is -1.5 C (29.3 F) in 1978, marked on the chart; the median year is 0.5 C (32.9 F).

Coldest night (TNn) at Orchard Hills Treatment Works by year
Year	Coldest night (TNn)
1970	n/a
1971	-1.1 C (30.0 F)
1972	-0.3 C (31.5 F)
1973	-1.0 C (30.2 F)
1974	-1.0 C (30.2 F)
1975	1.5 C (34.7 F)
1976	1.5 C (34.7 F)
1977	0.5 C (32.9 F)
1978	-1.5 C (29.3 F)
1979	1.0 C (33.8 F)
1980	1.2 C (34.2 F)
1981	0.0 C (32.0 F)
1982	0.0 C (32.0 F)
1983	3.4 C (38.1 F)
1984	1.5 C (34.7 F)
1985	0.5 C (32.9 F)
1986	-1.2 C (29.8 F)
1987	0.0 C (32.0 F)
1988	2.5 C (36.5 F)
1989	4.5 C (40.1 F)
1990	n/a
1991	n/a
1992	n/a
1993	n/a
1994	n/a
1995	n/a
1996	n/a
1997	n/a
1998	n/a
1999	n/a
2000	n/a
2001	n/a
2002	n/a
2003	n/a
2004	n/a
2005	n/a
2006	n/a
2007	n/a
2008	n/a
2009	n/a
2010	n/a
2011	n/a
2012	n/a
2013	n/a
2014	n/a
2015	n/a
2016	n/a
2017	n/a
2018	n/a
2019	n/a
2020	n/a
2021	n/a
2022	n/a
2023	n/a
2024	n/a
2025	n/a

Wettest day (Rx1day)

The wettest day of the year at Orchard Hills Treatment Works, 1970 to 2025. The record is 241.0 mm (9.5 in) in 1986, marked on the chart; the median year is 68.8 mm (2.7 in).

Wettest day (Rx1day) at Orchard Hills Treatment Works by year
Year	Wettest day (Rx1day)
1970	85.9 mm (3.4 in)
1971	56.6 mm (2.2 in)
1972	68.6 mm (2.7 in)
1973	77.2 mm (3.0 in)
1974	84.6 mm (3.3 in)
1975	93.0 mm (3.7 in)
1976	61.0 mm (2.4 in)
1977	93.0 mm (3.7 in)
1978	130.0 mm (5.1 in)
1979	48.8 mm (1.9 in)
1980	51.4 mm (2.0 in)
1981	68.0 mm (2.7 in)
1982	46.0 mm (1.8 in)
1983	64.8 mm (2.6 in)
1984	98.0 mm (3.9 in)
1985	38.4 mm (1.5 in)
1986	241.0 mm (9.5 in)
1987	69.0 mm (2.7 in)
1988	136.2 mm (5.4 in)
1989	56.0 mm (2.2 in)
1990	124.0 mm (4.9 in)
1991	78.1 mm (3.1 in)
1992	121.0 mm (4.8 in)
1993	27.0 mm (1.1 in)
1994	30.6 mm (1.2 in)
1995	73.0 mm (2.9 in)
1996	65.0 mm (2.6 in)
1997	118.0 mm (4.6 in)
1998	64.0 mm (2.5 in)
1999	49.0 mm (1.9 in)
2000	56.0 mm (2.2 in)
2001	98.0 mm (3.9 in)
2002	82.0 mm (3.2 in)
2003	38.0 mm (1.5 in)
2004	54.2 mm (2.1 in)
2005	51.0 mm (2.0 in)
2006	69.4 mm (2.7 in)
2007	63.8 mm (2.5 in)
2008	72.0 mm (2.8 in)
2009	45.0 mm (1.8 in)
2010	46.5 mm (1.8 in)
2011	44.0 mm (1.7 in)
2012	77.0 mm (3.0 in)
2013	110.0 mm (4.3 in)
2014	40.0 mm (1.6 in)
2015	82.0 mm (3.2 in)
2016	100.0 mm (3.9 in)
2017	29.4 mm (1.2 in)
2018	63.2 mm (2.5 in)
2019	49.0 mm (1.9 in)
2020	117.0 mm (4.6 in)
2021	134.0 mm (5.3 in)
2022	132.6 mm (5.2 in)
2023	46.1 mm (1.8 in)
2024	151.2 mm (6.0 in)
2025	99.4 mm (3.9 in)

Wettest five days (Rx5day)

The wettest five days of the year at Orchard Hills Treatment Works, 1970 to 2025. The record is 384.0 mm (15.1 in) in 1986, marked on the chart; the median year is 130.6 mm (5.1 in).

Wettest five days (Rx5day) at Orchard Hills Treatment Works by year
Year	Wettest five days (Rx5day)
1970	138.0 mm (5.4 in)
1971	146.1 mm (5.8 in)
1972	145.1 mm (5.7 in)
1973	149.9 mm (5.9 in)
1974	134.0 mm (5.3 in)
1975	138.6 mm (5.5 in)
1976	194.0 mm (7.6 in)
1977	166.8 mm (6.6 in)
1978	264.8 mm (10.4 in)
1979	67.2 mm (2.6 in)
1980	68.4 mm (2.7 in)
1981	128.6 mm (5.1 in)
1982	82.1 mm (3.2 in)
1983	143.8 mm (5.7 in)
1984	120.5 mm (4.7 in)
1985	71.0 mm (2.8 in)
1986	384.0 mm (15.1 in)
1987	170.9 mm (6.7 in)
1988	279.2 mm (11.0 in)
1989	131.0 mm (5.2 in)
1990	280.6 mm (11.0 in)
1991	183.7 mm (7.2 in)
1992	212.2 mm (8.4 in)
1993	74.4 mm (2.9 in)
1994	82.1 mm (3.2 in)
1995	87.4 mm (3.4 in)
1996	113.7 mm (4.5 in)
1997	154.8 mm (6.1 in)
1998	104.6 mm (4.1 in)
1999	82.8 mm (3.3 in)
2000	130.2 mm (5.1 in)
2001	189.0 mm (7.4 in)
2002	131.0 mm (5.2 in)
2003	102.4 mm (4.0 in)
2004	86.1 mm (3.4 in)
2005	78.3 mm (3.1 in)
2006	77.5 mm (3.1 in)
2007	118.0 mm (4.6 in)
2008	203.0 mm (8.0 in)
2009	102.0 mm (4.0 in)
2010	118.4 mm (4.7 in)
2011	76.8 mm (3.0 in)
2012	96.8 mm (3.8 in)
2013	155.0 mm (6.1 in)
2014	77.4 mm (3.0 in)
2015	183.0 mm (7.2 in)
2016	203.0 mm (8.0 in)
2017	57.4 mm (2.3 in)
2018	81.0 mm (3.2 in)
2019	116.2 mm (4.6 in)
2020	295.2 mm (11.6 in)
2021	360.4 mm (14.2 in)
2022	297.0 mm (11.7 in)
2023	54.9 mm (2.2 in)
2024	220.8 mm (8.7 in)
2025	116.3 mm (4.6 in)

Longest dry spell (CDD)

The longest dry spell of the year at Orchard Hills Treatment Works, 1970 to 2025. The record is 97 days in 1992, marked on the chart; the median year is 31 days.

Longest dry spell (CDD) at Orchard Hills Treatment Works by year
Year	Longest dry spell (CDD)
1970	5 days
1971	36 days
1972	40 days
1973	40 days
1974	31 days
1975	32 days
1976	27 days
1977	29 days
1978	46 days
1979	45 days
1980	47 days
1981	73 days
1982	41 days
1983	26 days
1984	30 days
1985	30 days
1986	38 days
1987	28 days
1988	47 days
1989	17 days
1990	20 days
1991	33 days
1992	97 days
1993	25 days
1994	38 days
1995	78 days
1996	30 days
1997	36 days
1998	25 days
1999	27 days
2000	43 days
2001	37 days
2002	35 days
2003	22 days
2004	28 days
2005	52 days
2006	33 days
2007	35 days
2008	20 days
2009	24 days
2010	17 days
2011	21 days
2012	30 days
2013	35 days
2014	29 days
2015	30 days
2016	23 days
2017	32 days
2018	54 days
2019	50 days
2020	18 days
2021	26 days
2022	30 days
2023	20 days
2024	41 days
2025	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

45 years, 1971 to 2025

A day with at least 72.6 mm (2.9 in) of rain is expected about once in 2 years. A day with at least 226.9 mm (8.9 in) of rain is expected about once in 100 years.

Rainfall return levels at Orchard Hills Treatment Works: the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	72.6 mm (2.9 in)
5 years	105.2 mm (4.1 in)
10 years	129.8 mm (5.1 in)
25 years	165.1 mm (6.5 in)
50 years	194.5 mm (7.7 in)	Longer than the 45 years of record
100 years	226.9 mm (8.9 in)	Longer than the 45 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, 45 years of values from 1971 to 2025.

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: 241.0 mm (9.5 in) in 1986; 151.2 mm (6.0 in) in 2024; 136.2 mm (5.4 in) in 1988.

Download the Data

Data for Orchard Hills Treatment Works standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Orchard Hills Treatment Works 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 2026-10-13 (13 October 2026). Records are computed by this site and are not official.

Data as of 2026-10-13. Last revised 13 October 2026 (2026-10-13).