Preston Reservoir Weather Records (ASN00086096)

Record envelope, standing records and threshold days for Preston Reservoir (ASN00086096), Australia, with 116 years of record.

Key Facts for Preston Reservoir

Preston Reservoir (ASN00086096) is a weather station in Australia at -37.72 latitude and 145.01 longitude, 94 m (308 ft) above sea level.
The station reports from 1910 to 2025, 116 years of record.
0 records set at Preston Reservoir still stand.
Records are tracked for prcp: an element needs 30 years of data to be eligible.
Preston Reservoir set a daily record precipitation of 21.0 mm (0.8 in) on 27 October 2025.

About the Station

Location: Australia, -37.72 latitude, 145.01 longitude.
Elevation: 94 m (308 ft).
Period of record: 1910 to 2025, 116 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 Preston Reservoir. 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 Preston Reservoir, 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 Preston Reservoir still stand.

All-Time Record Progression

2 new records

2 all-time records were set at Preston Reservoir between 26 January 1941 and 29 January 1963. Each dot is a new record.

When Preston Reservoir set new all-time records
Date	Kind	Detail
1941-01-26	Record daily precipitation	Record daily precipitation 108.7 mm (4.3 in)
1963-01-29	Record daily precipitation	Record daily precipitation 140.7 mm (5.5 in)

Wettest Day of Each Month

Jan: 140.7 mm (5.5 in)

The wettest day on record for each calendar month at Preston Reservoir. The most was 140.7 mm (5.5 in) on 29 January 1963.

Record daily precipitation for each month at Preston Reservoir
Month	Record daily precipitation (mm)	Date
Jan	140.7 mm (5.5 in)	29 January 1963
Feb	126.4 mm (5.0 in)	3 February 2005
Mar	64.5 mm (2.5 in)	22 March 1970
Apr	98.8 mm (3.9 in)	23 April 1960
May	57.4 mm (2.3 in)	16 May 1987
Jun	106.0 mm (4.2 in)	1 June 2013
Jul	51.1 mm (2.0 in)	11 July 1957
Aug	76.2 mm (3.0 in)	26 August 1924
Sep	69.1 mm (2.7 in)	23 September 1916
Oct	76.6 mm (3.0 in)	16 October 1983
Nov	72.1 mm (2.8 in)	30 November 1934
Dec	99.0 mm (3.9 in)	3 December 2003

Latest Records

Latest records at Preston Reservoir
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
27 October 2025	Preston Reservoir, AU	daily rain	21.0 mm (0.8 in)	3.2 mm (0.13 in)	47 years	20 of 100 (Routine)
3 July 2025	Preston Reservoir, AU	daily rain	19.0 mm (0.7 in)	1.2 mm (0.05 in)	79 years	20 of 100 (Routine)
16 July 2024	Preston Reservoir, AU	daily rain	20.4 mm (0.8 in)	0.8 mm (0.03 in)	34 years	20 of 100 (Routine)
10 July 2024	Preston Reservoir, AU	daily rain	14.0 mm (0.6 in)	1.6 mm (0.06 in)	84 years	20 of 100 (Routine)
2 April 2024	Preston Reservoir, AU	daily rain	46.6 mm (1.8 in)	22.0 mm (0.9 in)	4 years	38 of 100 (Notable)
8 January 2024	Preston Reservoir, AU	daily rain	35.8 mm (1.4 in)	9.4 mm (0.37 in)	97 years	48 of 100 (Notable)
4 October 2023	Preston Reservoir, AU	daily rain	29.8 mm (1.2 in)	13.5 mm (0.5 in)	52 years	44 of 100 (Notable)
7 May 2023	Preston Reservoir, AU	daily rain	24.2 mm (1.0 in)	7.6 mm (0.30 in)	41 years	20 of 100 (Routine)
16 April 2023	Preston Reservoir, AU	daily rain	36.6 mm (1.4 in)	3.3 mm (0.13 in)	88 years	40 of 100 (Notable)
4 February 2023	Preston Reservoir, AU	daily rain	13.2 mm (0.5 in)	1.8 mm (0.07 in)	76 years	20 of 100 (Routine)
14 October 2022	Preston Reservoir, AU	daily rain	31.2 mm (1.2 in)	7.8 mm (0.31 in)	89 years	47 of 100 (Notable)
2 June 2022	Preston Reservoir, AU	daily rain	14.6 mm (0.6 in)	0.6 mm (0.02 in)	76 years	20 of 100 (Routine)
30 April 2022	Preston Reservoir, AU	daily rain	31.2 mm (1.2 in)	1.0 mm (0.04 in)	1 year	11 of 100 (Routine)
4 November 2021	Preston Reservoir, AU	daily rain	48.6 mm (1.9 in)	15.8 mm (0.6 in)	24 years	36 of 100 (Notable)
1 October 2021	Preston Reservoir, AU	daily rain	34.6 mm (1.4 in)	6.7 mm (0.26 in)	94 years	47 of 100 (Notable)
1 August 2021	Preston Reservoir, AU	daily rain	20.2 mm (0.8 in)	2.7 mm (0.11 in)	76 years	20 of 100 (Routine)
10 June 2021	Preston Reservoir, AU	daily rain	28.0 mm (1.1 in)	14.3 mm (0.6 in)	100 years	66 of 100 (Major)
30 January 2021	Preston Reservoir, AU	daily rain	55.2 mm (2.2 in)	15.2 mm (0.6 in)	3 years	25 of 100 (Routine)
30 April 2020	Preston Reservoir, AU	daily rain	30.2 mm (1.2 in)	2.0 mm (0.08 in)	46 years	25 of 100 (Routine)
2 April 2020	Preston Reservoir, AU	daily rain	24.6 mm (1.0 in)	6.0 mm (0.24 in)	35 years	20 of 100 (Routine)

Extremes by Year

1910 to 2025

Yearly extremes at Preston Reservoir: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Wettest day (Rx1day)	140.7 mm (5.5 in)	1963	43.3 mm (1.7 in)	116
Wettest five days (Rx5day)	173.5 mm (6.8 in)	1916	70.5 mm (2.8 in)	116
Longest dry spell (CDD)	48 days	1965	20 days	116

Wettest day (Rx1day)

The wettest day of the year at Preston Reservoir, 1910 to 2025. The record is 140.7 mm (5.5 in) in 1963, marked on the chart; the median year is 43.3 mm (1.7 in).

Wettest day (Rx1day) at Preston Reservoir by year
Year	Wettest day (Rx1day)
1910	30.5 mm (1.2 in)
1911	49.0 mm (1.9 in)
1912	39.1 mm (1.5 in)
1913	34.3 mm (1.4 in)
1914	36.3 mm (1.4 in)
1915	31.8 mm (1.3 in)
1916	69.1 mm (2.7 in)
1917	33.3 mm (1.3 in)
1918	39.9 mm (1.6 in)
1919	62.5 mm (2.5 in)
1920	47.5 mm (1.9 in)
1921	37.8 mm (1.5 in)
1922	33.5 mm (1.3 in)
1923	21.1 mm (0.8 in)
1924	76.2 mm (3.0 in)
1925	35.1 mm (1.4 in)
1926	26.4 mm (1.0 in)
1927	27.9 mm (1.1 in)
1928	51.3 mm (2.0 in)
1929	36.6 mm (1.4 in)
1930	50.8 mm (2.0 in)
1931	39.4 mm (1.6 in)
1932	58.9 mm (2.3 in)
1933	52.3 mm (2.1 in)
1934	72.1 mm (2.8 in)
1935	33.5 mm (1.3 in)
1936	46.2 mm (1.8 in)
1937	52.3 mm (2.1 in)
1938	31.0 mm (1.2 in)
1939	76.2 mm (3.0 in)
1940	25.7 mm (1.0 in)
1941	108.7 mm (4.3 in)
1942	36.1 mm (1.4 in)
1943	28.7 mm (1.1 in)
1944	26.7 mm (1.1 in)
1945	34.3 mm (1.4 in)
1946	99.1 mm (3.9 in)
1947	64.5 mm (2.5 in)
1948	21.3 mm (0.8 in)
1949	47.0 mm (1.9 in)
1950	53.6 mm (2.1 in)
1951	97.5 mm (3.8 in)
1952	43.4 mm (1.7 in)
1953	57.7 mm (2.3 in)
1954	61.7 mm (2.4 in)
1955	43.2 mm (1.7 in)
1956	40.6 mm (1.6 in)
1957	51.1 mm (2.0 in)
1958	53.8 mm (2.1 in)
1959	38.9 mm (1.5 in)
1960	98.8 mm (3.9 in)
1961	39.6 mm (1.6 in)
1962	36.8 mm (1.4 in)
1963	140.7 mm (5.5 in)
1964	29.0 mm (1.1 in)
1965	38.4 mm (1.5 in)
1966	35.3 mm (1.4 in)
1967	23.6 mm (0.9 in)
1968	44.5 mm (1.8 in)
1969	48.8 mm (1.9 in)
1970	64.5 mm (2.5 in)
1971	59.2 mm (2.3 in)
1972	44.7 mm (1.8 in)
1973	62.2 mm (2.4 in)
1974	54.6 mm (2.1 in)
1975	36.0 mm (1.4 in)
1976	28.6 mm (1.1 in)
1977	85.4 mm (3.4 in)
1978	71.2 mm (2.8 in)
1979	40.0 mm (1.6 in)
1980	34.2 mm (1.3 in)
1981	46.0 mm (1.8 in)
1982	60.2 mm (2.4 in)
1983	76.6 mm (3.0 in)
1984	40.0 mm (1.6 in)
1985	50.2 mm (2.0 in)
1986	19.6 mm (0.8 in)
1987	65.2 mm (2.6 in)
1988	55.2 mm (2.2 in)
1989	90.0 mm (3.5 in)
1990	40.0 mm (1.6 in)
1991	34.4 mm (1.4 in)
1992	39.2 mm (1.5 in)
1993	50.8 mm (2.0 in)
1994	48.8 mm (1.9 in)
1995	44.8 mm (1.8 in)
1996	43.6 mm (1.7 in)
1997	23.8 mm (0.9 in)
1998	40.4 mm (1.6 in)
1999	73.6 mm (2.9 in)
2000	33.2 mm (1.3 in)
2001	45.8 mm (1.8 in)
2002	24.0 mm (0.9 in)
2003	99.0 mm (3.9 in)
2004	41.0 mm (1.6 in)
2005	126.4 mm (5.0 in)
2006	34.2 mm (1.3 in)
2007	35.4 mm (1.4 in)
2008	34.4 mm (1.4 in)
2009	41.8 mm (1.6 in)
2010	64.0 mm (2.5 in)
2011	67.8 mm (2.7 in)
2012	41.4 mm (1.6 in)
2013	106.0 mm (4.2 in)
2014	20.6 mm (0.8 in)
2015	33.2 mm (1.3 in)
2016	66.2 mm (2.6 in)
2017	50.8 mm (2.0 in)
2018	43.8 mm (1.7 in)
2019	17.4 mm (0.7 in)
2020	30.2 mm (1.2 in)
2021	55.2 mm (2.2 in)
2022	41.6 mm (1.6 in)
2023	36.6 mm (1.4 in)
2024	46.6 mm (1.8 in)
2025	23.6 mm (0.9 in)

Wettest five days (Rx5day)

The wettest five days of the year at Preston Reservoir, 1910 to 2025. The record is 173.5 mm (6.8 in) in 1916, marked on the chart; the median year is 70.5 mm (2.8 in).

Wettest five days (Rx5day) at Preston Reservoir by year
Year	Wettest five days (Rx5day)
1910	46.5 mm (1.8 in)
1911	100.8 mm (4.0 in)
1912	46.7 mm (1.8 in)
1913	59.2 mm (2.3 in)
1914	46.0 mm (1.8 in)
1915	52.9 mm (2.1 in)
1916	173.5 mm (6.8 in)
1917	35.8 mm (1.4 in)
1918	70.2 mm (2.8 in)
1919	115.8 mm (4.6 in)
1920	77.5 mm (3.1 in)
1921	71.8 mm (2.8 in)
1922	55.6 mm (2.2 in)
1923	50.1 mm (2.0 in)
1924	90.6 mm (3.6 in)
1925	45.6 mm (1.8 in)
1926	56.8 mm (2.2 in)
1927	52.0 mm (2.0 in)
1928	71.1 mm (2.8 in)
1929	70.7 mm (2.8 in)
1930	89.7 mm (3.5 in)
1931	83.6 mm (3.3 in)
1932	97.5 mm (3.8 in)
1933	63.6 mm (2.5 in)
1934	139.4 mm (5.5 in)
1935	87.4 mm (3.4 in)
1936	78.8 mm (3.1 in)
1937	120.6 mm (4.7 in)
1938	35.1 mm (1.4 in)
1939	147.8 mm (5.8 in)
1940	42.9 mm (1.7 in)
1941	146.5 mm (5.8 in)
1942	48.0 mm (1.9 in)
1943	31.0 mm (1.2 in)
1944	61.2 mm (2.4 in)
1945	41.5 mm (1.6 in)
1946	127.9 mm (5.0 in)
1947	77.0 mm (3.0 in)
1948	53.9 mm (2.1 in)
1949	81.0 mm (3.2 in)
1950	70.6 mm (2.8 in)
1951	165.1 mm (6.5 in)
1952	88.1 mm (3.5 in)
1953	67.3 mm (2.6 in)
1954	113.5 mm (4.5 in)
1955	73.7 mm (2.9 in)
1956	86.6 mm (3.4 in)
1957	86.5 mm (3.4 in)
1958	99.6 mm (3.9 in)
1959	99.6 mm (3.9 in)
1960	168.4 mm (6.6 in)
1961	53.6 mm (2.1 in)
1962	63.0 mm (2.5 in)
1963	154.9 mm (6.1 in)
1964	59.8 mm (2.4 in)
1965	75.0 mm (3.0 in)
1966	56.2 mm (2.2 in)
1967	42.6 mm (1.7 in)
1968	65.3 mm (2.6 in)
1969	65.1 mm (2.6 in)
1970	121.6 mm (4.8 in)
1971	148.2 mm (5.8 in)
1972	99.4 mm (3.9 in)
1973	106.8 mm (4.2 in)
1974	92.6 mm (3.6 in)
1975	50.0 mm (2.0 in)
1976	55.4 mm (2.2 in)
1977	91.6 mm (3.6 in)
1978	83.6 mm (3.3 in)
1979	56.6 mm (2.2 in)
1980	43.8 mm (1.7 in)
1981	65.2 mm (2.6 in)
1982	71.8 mm (2.8 in)
1983	112.0 mm (4.4 in)
1984	83.4 mm (3.3 in)
1985	84.0 mm (3.3 in)
1986	33.2 mm (1.3 in)
1987	82.0 mm (3.2 in)
1988	106.0 mm (4.2 in)
1989	95.8 mm (3.8 in)
1990	68.2 mm (2.7 in)
1991	79.6 mm (3.1 in)
1992	66.8 mm (2.6 in)
1993	94.6 mm (3.7 in)
1994	68.0 mm (2.7 in)
1995	73.0 mm (2.9 in)
1996	64.4 mm (2.5 in)
1997	44.2 mm (1.7 in)
1998	58.2 mm (2.3 in)
1999	147.4 mm (5.8 in)
2000	84.0 mm (3.3 in)
2001	115.0 mm (4.5 in)
2002	35.4 mm (1.4 in)
2003	102.0 mm (4.0 in)
2004	57.8 mm (2.3 in)
2005	149.2 mm (5.9 in)
2006	34.8 mm (1.4 in)
2007	60.8 mm (2.4 in)
2008	67.0 mm (2.6 in)
2009	62.0 mm (2.4 in)
2010	76.0 mm (3.0 in)
2011	89.6 mm (3.5 in)
2012	59.6 mm (2.3 in)
2013	127.2 mm (5.0 in)
2014	52.4 mm (2.1 in)
2015	33.6 mm (1.3 in)
2016	70.4 mm (2.8 in)
2017	85.6 mm (3.4 in)
2018	59.8 mm (2.4 in)
2019	35.8 mm (1.4 in)
2020	37.6 mm (1.5 in)
2021	66.6 mm (2.6 in)
2022	62.0 mm (2.4 in)
2023	54.4 mm (2.1 in)
2024	58.8 mm (2.3 in)
2025	45.6 mm (1.8 in)

Longest dry spell (CDD)

The longest dry spell of the year at Preston Reservoir, 1910 to 2025. The record is 48 days in 1965, marked on the chart; the median year is 20 days.

Longest dry spell (CDD) at Preston Reservoir by year
Year	Longest dry spell (CDD)
1910	10 days
1911	16 days
1912	27 days
1913	32 days
1914	29 days
1915	36 days
1916	24 days
1917	23 days
1918	14 days
1919	40 days
1920	18 days
1921	20 days
1922	20 days
1923	35 days
1924	16 days
1925	28 days
1926	31 days
1927	18 days
1928	19 days
1929	17 days
1930	26 days
1931	19 days
1932	36 days
1933	19 days
1934	38 days
1935	21 days
1936	19 days
1937	26 days
1938	30 days
1939	23 days
1940	31 days
1941	15 days
1942	19 days
1943	32 days
1944	27 days
1945	34 days
1946	13 days
1947	24 days
1948	27 days
1949	19 days
1950	26 days
1951	26 days
1952	22 days
1953	19 days
1954	19 days
1955	27 days
1956	41 days
1957	28 days
1958	26 days
1959	25 days
1960	18 days
1961	22 days
1962	18 days
1963	19 days
1964	20 days
1965	48 days
1966	15 days
1967	29 days
1968	28 days
1969	15 days
1970	23 days
1971	21 days
1972	37 days
1973	15 days
1974	22 days
1975	14 days
1976	15 days
1977	19 days
1978	14 days
1979	16 days
1980	15 days
1981	18 days
1982	20 days
1983	26 days
1984	19 days
1985	18 days
1986	27 days
1987	24 days
1988	24 days
1989	17 days
1990	15 days
1991	30 days
1992	20 days
1993	14 days
1994	21 days
1995	11 days
1996	16 days
1997	13 days
1998	18 days
1999	19 days
2000	17 days
2001	24 days
2002	24 days
2003	29 days
2004	25 days
2005	22 days
2006	28 days
2007	18 days
2008	25 days
2009	38 days
2010	19 days
2011	10 days
2012	6 days
2013	4 days
2014	3 days
2015	14 days
2016	5 days
2017	5 days
2018	14 days
2019	12 days
2020	10 days
2021	15 days
2022	18 days
2023	22 days
2024	28 days
2025	20 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, 1911 to 2024

A day with at least 43.7 mm (1.7 in) of rain is expected about once in 2 years. A day with at least 136.5 mm (5.4 in) of rain is expected about once in 100 years.

Rainfall return levels at Preston Reservoir: the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	43.7 mm (1.7 in)
5 years	61.8 mm (2.4 in)
10 years	76.1 mm (3.0 in)
25 years	97.3 mm (3.8 in)
50 years	115.7 mm (4.6 in)
100 years	136.5 mm (5.4 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 1911 to 2024.

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: 140.7 mm (5.5 in) in 1963; 126.4 mm (5.0 in) in 2005; 108.7 mm (4.3 in) in 1941.

Download the Data

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