Williamstown (Glen Gillian) Weather Records (ASN00023756)

Record envelope, standing records and threshold days for Williamstown (Glen Gillian) (ASN00023756), Australia, with 76 years of record.

Key Facts for Williamstown (Glen Gillian)

Williamstown (Glen Gillian) (ASN00023756) is a weather station in Australia at -34.66 latitude and 138.93 longitude, 390 m (1,280 ft) above sea level.
The station reports from 1951 to 2026, 76 years of record.
0 records set at Williamstown (Glen Gillian) still stand.
Records are tracked for prcp: an element needs 30 years of data to be eligible.
Williamstown (Glen Gillian) set a monthly record daily precipitation of 52.4 mm (2.1 in) on 10 August 2026.

About the Station

Location: Australia, -34.66 latitude, 138.93 longitude.
Elevation: 390 m (1,280 ft).
Period of record: 1951 to 2026, 76 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 Williamstown (Glen Gillian). 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 Williamstown (Glen Gillian), 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 Williamstown (Glen Gillian) still stand.

Wettest Day of Each Month

Feb: 86.4 mm (3.4 in)

The wettest day on record for each calendar month at Williamstown (Glen Gillian). The most was 86.4 mm (3.4 in) on 9 February 1969.

Record daily precipitation for each month at Williamstown (Glen Gillian)
Month	Record daily precipitation (mm)	Date
Jan	49.4 mm (1.9 in)	31 January 1974
Feb	86.4 mm (3.4 in)	9 February 1969
Mar	58.2 mm (2.3 in)	16 March 1985
Apr	56.4 mm (2.2 in)	29 April 2007
May	62.0 mm (2.4 in)	30 May 2022
Jun	56.0 mm (2.2 in)	1 June 2013
Jul	53.4 mm (2.1 in)	26 July 2025
Aug	52.4 mm (2.1 in)	10 August 2026
Sep	62.4 mm (2.5 in)	30 September 2016
Oct	57.0 mm (2.2 in)	9 October 1992
Nov	65.0 mm (2.6 in)	8 November 2005
Dec	75.0 mm (3.0 in)	8 December 2010

Latest Records

Latest records at Williamstown (Glen Gillian)
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
10 August 2026	Williamstown (Glen Gillian), AU	monthly rain	52.4 mm (2.1 in)	6.4 mm (0.25 in)	22 years	32 of 100 (Routine)
9 August 2026	Williamstown (Glen Gillian), AU	daily rain	31.0 mm (1.2 in)	3.8 mm (0.15 in)	7 years	14 of 100 (Routine)
2 June 2026	Williamstown (Glen Gillian), AU	daily rain	45.0 mm (1.8 in)	12.0 mm (0.5 in)	63 years	40 of 100 (Notable)
17 March 2026	Williamstown (Glen Gillian), AU	daily rain	25.6 mm (1.0 in)	7.6 mm (0.30 in)	24 years	23 of 100 (Routine)
22 October 2025	Williamstown (Glen Gillian), AU	daily rain	54.6 mm (2.1 in)	38.2 mm (1.5 in)	30 years	56 of 100 (Notable)
28 August 2025	Williamstown (Glen Gillian), AU	daily rain	17.0 mm (0.7 in)	3.6 mm (0.14 in)	24 years	19 of 100 (Routine)
26 July 2025	Williamstown (Glen Gillian), AU	monthly rain	53.4 mm (2.1 in)	1.4 mm (0.06 in)	26 years	27 of 100 (Routine)
10 July 2025	Williamstown (Glen Gillian), AU	daily rain	33.2 mm (1.3 in)	8.6 mm (0.34 in)	11 years	23 of 100 (Routine)
18 October 2024	Williamstown (Glen Gillian), AU	daily rain	31.2 mm (1.2 in)	5.3 mm (0.21 in)	51 years	29 of 100 (Routine)
15 October 2024	Williamstown (Glen Gillian), AU	daily rain	23.2 mm (0.9 in)	1.6 mm (0.06 in)	41 years	20 of 100 (Routine)
16 August 2024	Williamstown (Glen Gillian), AU	daily rain	24.0 mm (0.9 in)	0.2 mm (0.01 in)	7 years	9 of 100 (Routine)
29 June 2024	Williamstown (Glen Gillian), AU	daily rain	26.0 mm (1.0 in)	1.0 mm (0.04 in)	47 years	22 of 100 (Routine)
7 January 2024	Williamstown (Glen Gillian), AU	daily rain	33.4 mm (1.3 in)	20.2 mm (0.8 in)	52 years	52 of 100 (Notable)
29 November 2023	Williamstown (Glen Gillian), AU	daily rain	31.0 mm (1.2 in)	7.0 mm (0.28 in)	13 years	20 of 100 (Routine)
28 November 2023	Williamstown (Glen Gillian), AU	daily rain	43.4 mm (1.7 in)	17.0 mm (0.7 in)	33 years	40 of 100 (Notable)
24 November 2023	Williamstown (Glen Gillian), AU	daily rain	11.2 mm (0.4 in)	1.5 mm (0.06 in)	54 years	20 of 100 (Routine)
3 February 2023	Williamstown (Glen Gillian), AU	daily rain	4.2 mm (0.17 in)	1.0 mm (0.04 in)	17 years	12 of 100 (Routine)
29 January 2023	Williamstown (Glen Gillian), AU	daily rain	16.0 mm (0.6 in)	1.4 mm (0.06 in)	16 years	14 of 100 (Routine)
19 November 2022	Williamstown (Glen Gillian), AU	daily rain	20.8 mm (0.8 in)	6.8 mm (0.27 in)	44 years	20 of 100 (Routine)
14 November 2022	Williamstown (Glen Gillian), AU	daily rain	30.4 mm (1.2 in)	13.4 mm (0.5 in)	24 years	33 of 100 (Routine)

Extremes by Year

1951 to 2026

Yearly extremes at Williamstown (Glen Gillian): the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Wettest day (Rx1day)	86.4 mm (3.4 in)	1969	40.1 mm (1.6 in)	76
Wettest five days (Rx5day)	144.4 mm (5.7 in)	2007	74.0 mm (2.9 in)	76
Longest dry spell (CDD)	71 days	1985	31 days	76

Wettest day (Rx1day)

The wettest day of the year at Williamstown (Glen Gillian), 1951 to 2026. The record is 86.4 mm (3.4 in) in 1969, marked on the chart; the median year is 40.1 mm (1.6 in).

Wettest day (Rx1day) at Williamstown (Glen Gillian) by year
Year	Wettest day (Rx1day)
1951	30.2 mm (1.2 in)
1952	40.6 mm (1.6 in)
1953	21.6 mm (0.9 in)
1954	30.0 mm (1.2 in)
1955	40.1 mm (1.6 in)
1956	27.7 mm (1.1 in)
1957	36.6 mm (1.4 in)
1958	38.9 mm (1.5 in)
1959	56.6 mm (2.2 in)
1960	39.9 mm (1.6 in)
1961	27.7 mm (1.1 in)
1962	43.4 mm (1.7 in)
1963	43.2 mm (1.7 in)
1964	29.7 mm (1.2 in)
1965	27.9 mm (1.1 in)
1966	35.3 mm (1.4 in)
1967	17.0 mm (0.7 in)
1968	52.1 mm (2.1 in)
1969	86.4 mm (3.4 in)
1970	43.9 mm (1.7 in)
1971	40.6 mm (1.6 in)
1972	24.1 mm (0.9 in)
1973	63.8 mm (2.5 in)
1974	50.0 mm (2.0 in)
1975	33.0 mm (1.3 in)
1976	20.8 mm (0.8 in)
1977	29.0 mm (1.1 in)
1978	37.6 mm (1.5 in)
1979	36.0 mm (1.4 in)
1980	55.6 mm (2.2 in)
1981	55.8 mm (2.2 in)
1982	30.4 mm (1.2 in)
1983	34.6 mm (1.4 in)
1984	36.4 mm (1.4 in)
1985	58.2 mm (2.3 in)
1986	41.0 mm (1.6 in)
1987	50.0 mm (2.0 in)
1988	55.0 mm (2.2 in)
1989	36.8 mm (1.4 in)
1990	48.4 mm (1.9 in)
1991	38.0 mm (1.5 in)
1992	57.0 mm (2.2 in)
1993	27.0 mm (1.1 in)
1994	30.0 mm (1.2 in)
1995	35.0 mm (1.4 in)
1996	47.0 mm (1.9 in)
1997	44.0 mm (1.7 in)
1998	52.0 mm (2.0 in)
1999	38.0 mm (1.5 in)
2000	32.0 mm (1.3 in)
2001	36.0 mm (1.4 in)
2002	36.0 mm (1.4 in)
2003	40.0 mm (1.6 in)
2004	46.0 mm (1.8 in)
2005	65.0 mm (2.6 in)
2006	34.4 mm (1.4 in)
2007	56.4 mm (2.2 in)
2008	50.0 mm (2.0 in)
2009	43.0 mm (1.7 in)
2010	75.0 mm (3.0 in)
2011	38.0 mm (1.5 in)
2012	25.0 mm (1.0 in)
2013	56.0 mm (2.2 in)
2014	63.0 mm (2.5 in)
2015	31.0 mm (1.2 in)
2016	62.4 mm (2.5 in)
2017	49.4 mm (1.9 in)
2018	28.2 mm (1.1 in)
2019	46.6 mm (1.8 in)
2020	43.4 mm (1.7 in)
2021	33.0 mm (1.3 in)
2022	62.0 mm (2.4 in)
2023	43.4 mm (1.7 in)
2024	33.4 mm (1.3 in)
2025	54.6 mm (2.1 in)
2026	52.4 mm (2.1 in)

Wettest five days (Rx5day)

The wettest five days of the year at Williamstown (Glen Gillian), 1951 to 2026. The record is 144.4 mm (5.7 in) in 2007, marked on the chart; the median year is 74.0 mm (2.9 in).

Wettest five days (Rx5day) at Williamstown (Glen Gillian) by year
Year	Wettest five days (Rx5day)
1951	63.5 mm (2.5 in)
1952	76.7 mm (3.0 in)
1953	53.8 mm (2.1 in)
1954	56.4 mm (2.2 in)
1955	69.4 mm (2.7 in)
1956	70.5 mm (2.8 in)
1957	50.8 mm (2.0 in)
1958	61.9 mm (2.4 in)
1959	56.9 mm (2.2 in)
1960	72.9 mm (2.9 in)
1961	49.6 mm (2.0 in)
1962	81.8 mm (3.2 in)
1963	74.9 mm (2.9 in)
1964	58.1 mm (2.3 in)
1965	37.1 mm (1.5 in)
1966	79.2 mm (3.1 in)
1967	42.0 mm (1.7 in)
1968	88.3 mm (3.5 in)
1969	92.3 mm (3.6 in)
1970	80.5 mm (3.2 in)
1971	62.5 mm (2.5 in)
1972	52.8 mm (2.1 in)
1973	95.3 mm (3.8 in)
1974	122.8 mm (4.8 in)
1975	82.0 mm (3.2 in)
1976	39.4 mm (1.6 in)
1977	58.2 mm (2.3 in)
1978	85.8 mm (3.4 in)
1979	65.2 mm (2.6 in)
1980	93.6 mm (3.7 in)
1981	122.2 mm (4.8 in)
1982	77.2 mm (3.0 in)
1983	69.6 mm (2.7 in)
1984	73.2 mm (2.9 in)
1985	59.0 mm (2.3 in)
1986	86.6 mm (3.4 in)
1987	105.4 mm (4.1 in)
1988	100.6 mm (4.0 in)
1989	63.4 mm (2.5 in)
1990	83.2 mm (3.3 in)
1991	85.8 mm (3.4 in)
1992	103.0 mm (4.1 in)
1993	51.2 mm (2.0 in)
1994	53.0 mm (2.1 in)
1995	67.2 mm (2.6 in)
1996	81.8 mm (3.2 in)
1997	71.8 mm (2.8 in)
1998	72.8 mm (2.9 in)
1999	64.4 mm (2.5 in)
2000	79.8 mm (3.1 in)
2001	81.8 mm (3.2 in)
2002	74.8 mm (2.9 in)
2003	68.6 mm (2.7 in)
2004	133.6 mm (5.3 in)
2005	120.0 mm (4.7 in)
2006	50.2 mm (2.0 in)
2007	144.4 mm (5.7 in)
2008	78.0 mm (3.1 in)
2009	141.0 mm (5.6 in)
2010	94.0 mm (3.7 in)
2011	63.6 mm (2.5 in)
2012	46.2 mm (1.8 in)
2013	78.8 mm (3.1 in)
2014	113.8 mm (4.5 in)
2015	61.4 mm (2.4 in)
2016	110.2 mm (4.3 in)
2017	66.2 mm (2.6 in)
2018	54.8 mm (2.2 in)
2019	70.2 mm (2.8 in)
2020	69.6 mm (2.7 in)
2021	85.6 mm (3.4 in)
2022	92.8 mm (3.7 in)
2023	74.8 mm (2.9 in)
2024	64.4 mm (2.5 in)
2025	87.0 mm (3.4 in)
2026	98.2 mm (3.9 in)

Longest dry spell (CDD)

The longest dry spell of the year at Williamstown (Glen Gillian), 1951 to 2026. The record is 71 days in 1985, marked on the chart; the median year is 31 days.

Longest dry spell (CDD) at Williamstown (Glen Gillian) by year
Year	Longest dry spell (CDD)
1951	23 days
1952	58 days
1953	43 days
1954	46 days
1955	35 days
1956	27 days
1957	35 days
1958	26 days
1959	38 days
1960	38 days
1961	37 days
1962	29 days
1963	45 days
1964	23 days
1965	70 days
1966	28 days
1967	58 days
1968	28 days
1969	34 days
1970	53 days
1971	18 days
1972	48 days
1973	34 days
1974	35 days
1975	26 days
1976	23 days
1977	24 days
1978	21 days
1979	21 days
1980	41 days
1981	21 days
1982	26 days
1983	18 days
1984	32 days
1985	71 days
1986	56 days
1987	25 days
1988	32 days
1989	33 days
1990	25 days
1991	59 days
1992	20 days
1993	36 days
1994	32 days
1995	26 days
1996	22 days
1997	30 days
1998	24 days
1999	22 days
2000	31 days
2001	24 days
2002	44 days
2003	28 days
2004	44 days
2005	29 days
2006	37 days
2007	53 days
2008	60 days
2009	61 days
2010	22 days
2011	21 days
2012	27 days
2013	26 days
2014	29 days
2015	62 days
2016	21 days
2017	32 days
2018	20 days
2019	42 days
2020	26 days
2021	25 days
2022	18 days
2023	28 days
2024	50 days
2025	38 days
2026	58 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

74 years, 1952 to 2025

A day with at least 40.6 mm (1.6 in) of rain is expected about once in 2 years. A day with at least 80.7 mm (3.2 in) of rain is expected about once in 100 years.

Rainfall return levels at Williamstown (Glen Gillian): the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	40.6 mm (1.6 in)
5 years	52.4 mm (2.1 in)
10 years	59.8 mm (2.4 in)
25 years	68.6 mm (2.7 in)
50 years	74.8 mm (2.9 in)
100 years	80.7 mm (3.2 in)	Longer than the 74 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, 74 years of values from 1952 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: 86.4 mm (3.4 in) in 1969; 75.0 mm (3.0 in) in 2010; 65.0 mm (2.6 in) in 2005.

Download the Data

Data for Williamstown (Glen Gillian) standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Williamstown (Glen Gillian) 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 2026-10-12. Last revised 12 October 2026 (2026-10-12).

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