Somerset Dam Weather Records (ASN00040189)

Record envelope, standing records and threshold days for Somerset Dam (ASN00040189), Australia, with 91 years of record.

Key Facts for Somerset Dam

Somerset Dam (ASN00040189) is a weather station in Australia at -27.11 latitude and 152.56 longitude, 113 m (371 ft) above sea level.
The station reports from 1936 to 2026, 91 years of record.
1,464 records set at Somerset Dam still stand.
Records are tracked for prcp: an element needs 30 years of data to be eligible.
Somerset Dam set a daily record precipitation of 51.0 mm (2.0 in) on 28 May 2026.

About the Station

Location: Australia, -27.11 latitude, 152.56 longitude.
Elevation: 113 m (371 ft).
Period of record: 1936 to 2026, 91 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 Somerset Dam. 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 Somerset Dam, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	40.0 C (104.0 F)	12.8 C (55.0 F)	n/a	n/a
Feb	39.7 C (103.5 F)	11.9 C (53.4 F)	n/a	n/a
Mar	38.6 C (101.5 F)	11.1 C (52.0 F)	n/a	n/a
Apr	33.3 C (91.9 F)	6.7 C (44.1 F)	n/a	n/a
May	29.4 C (84.9 F)	0.1 C (32.2 F)	n/a	n/a
Jun	27.5 C (81.5 F)	-1.1 C (30.0 F)	n/a	n/a
Jul	28.9 C (84.0 F)	-1.1 C (30.0 F)	n/a	n/a
Aug	28.3 C (82.9 F)	-1.4 C (29.5 F)	n/a	n/a
Sep	33.1 C (91.6 F)	2.5 C (36.5 F)	n/a	n/a
Oct	40.8 C (105.4 F)	3.3 C (37.9 F)	n/a	n/a
Nov	42.2 C (108.0 F)	7.8 C (46.0 F)	n/a	n/a
Dec	39.4 C (102.9 F)	10.0 C (50.0 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Somerset Dam still stand. 1957 holds the most, with 158.

All-Time Record Progression

1 new records

1 all-time records were set at Somerset Dam between 9 February 1999 and 9 February 1999. Each dot is a new record.

Wettest Day of Each Month

Feb: 276.2 mm (10.9 in)

The wettest day on record for each calendar month at Somerset Dam. The most was 276.2 mm (10.9 in) on 9 February 1999.

Record daily precipitation for each month at Somerset Dam
Month	Record daily precipitation (mm)	Date
Jan	192.0 mm (7.6 in)	10 January 2011
Feb	276.2 mm (10.9 in)	9 February 1999
Mar	162.0 mm (6.4 in)	28 March 2014
Apr	130.0 mm (5.1 in)	12 April 1988
May	147.6 mm (5.8 in)	20 May 2009
Jun	99.1 mm (3.9 in)	23 June 1950
Jul	191.3 mm (7.5 in)	20 July 1965
Aug	65.0 mm (2.6 in)	11 August 2010
Sep	53.6 mm (2.1 in)	11 September 1998
Oct	152.0 mm (6.0 in)	12 October 2010
Nov	126.6 mm (5.0 in)	30 November 2017
Dec	165.1 mm (6.5 in)	7 December 1970

Period of Record Coverage

1957 to 1970

14 years of record at Somerset Dam, 1957 to 1970. 7 years have data for under 90 percent of days and are left out of rankings: 1959, 1960, 1961, 1962, 1963, 1966, 1970.

Days with data per year at Somerset Dam
Year	Days with data	Share of year	Complete
1957	359	98%	Yes
1958	364	100%	Yes
1959	312	85%	No
1960	274	75%	No
1961	248	68%	No
1962	258	71%	No
1963	325	89%	No
1964	351	96%	Yes
1965	346	95%	Yes
1966	291	80%	No
1967	354	97%	Yes
1968	361	99%	Yes
1969	358	98%	Yes
1970	176	48%	No

Latest Records

Latest records at Somerset Dam
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
28 May 2026	Somerset Dam, AU	daily rain	51.0 mm (2.0 in)	5.0 mm (0.20 in)	36 years	22 of 100 (Routine)
9 March 2026	Somerset Dam, AU	daily rain	97.0 mm (3.8 in)	68.0 mm (2.7 in)	80 years	73 of 100 (Major)
27 November 2025	Somerset Dam, AU	daily rain	37.6 mm (1.5 in)	7.1 mm (0.28 in)	86 years	39 of 100 (Notable)
13 October 2025	Somerset Dam, AU	daily rain	31.2 mm (1.2 in)	6.4 mm (0.25 in)	7 years	15 of 100 (Routine)
29 March 2025	Somerset Dam, AU	daily rain	41.2 mm (1.6 in)	6.0 mm (0.24 in)	23 years	18 of 100 (Routine)
10 March 2025	Somerset Dam, AU	daily rain	59.6 mm (2.3 in)	12.9 mm (0.5 in)	84 years	41 of 100 (Notable)
14 August 2024	Somerset Dam, AU	daily rain	13.4 mm (0.5 in)	2.6 mm (0.10 in)	41 years	20 of 100 (Routine)
16 May 2023	Somerset Dam, AU	daily rain	34.0 mm (1.3 in)	2.0 mm (0.08 in)	32 years	18 of 100 (Routine)
3 September 2022	Somerset Dam, AU	daily rain	34.8 mm (1.4 in)	19.3 mm (0.8 in)	75 years	51 of 100 (Notable)
22 July 2022	Somerset Dam, AU	daily rain	25.4 mm (1.0 in)	3.4 mm (0.13 in)	40 years	22 of 100 (Routine)
22 May 2022	Somerset Dam, AU	daily rain	35.5 mm (1.4 in)	17.5 mm (0.7 in)	40 years	33 of 100 (Routine)
14 May 2022	Somerset Dam, AU	daily rain	55.0 mm (2.2 in)	33.2 mm (1.3 in)	53 years	48 of 100 (Notable)
13 May 2022	Somerset Dam, AU	daily rain	48.2 mm (1.9 in)	26.4 mm (1.0 in)	52 years	42 of 100 (Notable)
12 May 2022	Somerset Dam, AU	daily rain	62.0 mm (2.4 in)	46.3 mm (1.8 in)	67 years	62 of 100 (Major)
11 May 2022	Somerset Dam, AU	daily rain	60.0 mm (2.4 in)	7.2 mm (0.28 in)	23 years	19 of 100 (Routine)
27 February 2022	Somerset Dam, AU	daily rain	237.0 mm (9.3 in)	190.8 mm (7.5 in)	4 years	49 of 100 (Notable)
26 February 2022	Somerset Dam, AU	daily rain	231.0 mm (9.1 in)	119.8 mm (4.7 in)	8 years	50 of 100 (Notable)
12 November 2021	Somerset Dam, AU	daily rain	38.2 mm (1.5 in)	4.2 mm (0.17 in)	20 years	16 of 100 (Routine)
19 January 2021	Somerset Dam, AU	daily rain	87.4 mm (3.4 in)	16.3 mm (0.6 in)	83 years	40 of 100 (Notable)
14 December 2020	Somerset Dam, AU	daily rain	35.0 mm (1.4 in)	5.0 mm (0.20 in)	30 years	19 of 100 (Routine)

Extremes by Year

1936 to 2026

Yearly extremes at Somerset Dam: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	42.2 C (108.0 F)	1968	38.8 C (101.9 F)	14
Coldest night (TNn)	-1.4 C (29.5 F)	1964	-0.3 C (31.5 F)	14
Wettest day (Rx1day)	276.2 mm (10.9 in)	1999	87.8 mm (3.5 in)	91
Wettest five days (Rx5day)	617.9 mm (24.3 in)	2022	146.5 mm (5.8 in)	91
Longest dry spell (CDD)	78 days	1946	29 days	91

Hottest day (TXx)

The hottest day of the year at Somerset Dam, 1936 to 2026. The record is 42.2 C (108.0 F) in 1968, marked on the chart; the median year is 38.8 C (101.9 F).

Hottest day (TXx) at Somerset Dam by year
Year	Hottest day (TXx)
1936	n/a
1937	n/a
1938	n/a
1939	n/a
1940	n/a
1941	n/a
1942	n/a
1943	n/a
1944	n/a
1945	n/a
1946	n/a
1947	n/a
1948	n/a
1949	n/a
1950	n/a
1951	n/a
1952	n/a
1953	n/a
1954	n/a
1955	n/a
1956	n/a
1957	39.4 C (102.9 F)
1958	40.8 C (105.4 F)
1959	34.4 C (93.9 F)
1960	39.7 C (103.5 F)
1961	34.4 C (93.9 F)
1962	37.2 C (99.0 F)
1963	35.3 C (95.5 F)
1964	38.3 C (100.9 F)
1965	40.6 C (105.1 F)
1966	37.8 C (100.0 F)
1967	39.4 C (102.9 F)
1968	42.2 C (108.0 F)
1969	39.4 C (102.9 F)
1970	35.6 C (96.1 F)
1971	n/a
1972	n/a
1973	n/a
1974	n/a
1975	n/a
1976	n/a
1977	n/a
1978	n/a
1979	n/a
1980	n/a
1981	n/a
1982	n/a
1983	n/a
1984	n/a
1985	n/a
1986	n/a
1987	n/a
1988	n/a
1989	n/a
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
2026	n/a

Coldest night (TNn)

The coldest night of the year at Somerset Dam, 1936 to 2026. The record is -1.4 C (29.5 F) in 1964, marked on the chart; the median year is -0.3 C (31.5 F).

Coldest night (TNn) at Somerset Dam by year
Year	Coldest night (TNn)
1936	n/a
1937	n/a
1938	n/a
1939	n/a
1940	n/a
1941	n/a
1942	n/a
1943	n/a
1944	n/a
1945	n/a
1946	n/a
1947	n/a
1948	n/a
1949	n/a
1950	n/a
1951	n/a
1952	n/a
1953	n/a
1954	n/a
1955	n/a
1956	n/a
1957	-0.6 C (30.9 F)
1958	-0.6 C (30.9 F)
1959	1.4 C (34.5 F)
1960	0.0 C (32.0 F)
1961	-1.1 C (30.0 F)
1962	0.6 C (33.1 F)
1963	-0.6 C (30.9 F)
1964	-1.4 C (29.5 F)
1965	-1.1 C (30.0 F)
1966	0.0 C (32.0 F)
1967	1.7 C (35.1 F)
1968	-1.1 C (30.0 F)
1969	3.3 C (37.9 F)
1970	1.4 C (34.5 F)
1971	n/a
1972	n/a
1973	n/a
1974	n/a
1975	n/a
1976	n/a
1977	n/a
1978	n/a
1979	n/a
1980	n/a
1981	n/a
1982	n/a
1983	n/a
1984	n/a
1985	n/a
1986	n/a
1987	n/a
1988	n/a
1989	n/a
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
2026	n/a

Wettest day (Rx1day)

The wettest day of the year at Somerset Dam, 1936 to 2026. The record is 276.2 mm (10.9 in) in 1999, marked on the chart; the median year is 87.8 mm (3.5 in).

Wettest day (Rx1day) at Somerset Dam by year
Year	Wettest day (Rx1day)
1936	20.1 mm (0.8 in)
1937	53.8 mm (2.1 in)
1938	71.1 mm (2.8 in)
1939	82.6 mm (3.3 in)
1940	78.0 mm (3.1 in)
1941	55.9 mm (2.2 in)
1942	132.1 mm (5.2 in)
1943	109.2 mm (4.3 in)
1944	53.1 mm (2.1 in)
1945	93.5 mm (3.7 in)
1946	156.5 mm (6.2 in)
1947	65.5 mm (2.6 in)
1948	69.1 mm (2.7 in)
1949	125.0 mm (4.9 in)
1950	122.2 mm (4.8 in)
1951	106.9 mm (4.2 in)
1952	61.5 mm (2.4 in)
1953	130.0 mm (5.1 in)
1954	126.5 mm (5.0 in)
1955	154.2 mm (6.1 in)
1956	248.9 mm (9.8 in)
1957	43.7 mm (1.7 in)
1958	87.4 mm (3.4 in)
1959	77.7 mm (3.1 in)
1960	70.1 mm (2.8 in)
1961	77.0 mm (3.0 in)
1962	76.7 mm (3.0 in)
1963	114.3 mm (4.5 in)
1964	96.8 mm (3.8 in)
1965	191.3 mm (7.5 in)
1966	81.3 mm (3.2 in)
1967	73.7 mm (2.9 in)
1968	107.2 mm (4.2 in)
1969	52.6 mm (2.1 in)
1970	165.1 mm (6.5 in)
1971	129.5 mm (5.1 in)
1972	110.0 mm (4.3 in)
1973	159.5 mm (6.3 in)
1974	186.2 mm (7.3 in)
1975	57.4 mm (2.3 in)
1976	114.0 mm (4.5 in)
1977	33.2 mm (1.3 in)
1978	87.0 mm (3.4 in)
1979	99.0 mm (3.9 in)
1980	90.2 mm (3.6 in)
1981	87.8 mm (3.5 in)
1982	115.0 mm (4.5 in)
1983	73.0 mm (2.9 in)
1984	80.0 mm (3.1 in)
1985	75.0 mm (3.0 in)
1986	99.0 mm (3.9 in)
1987	90.0 mm (3.5 in)
1988	130.0 mm (5.1 in)
1989	128.5 mm (5.1 in)
1990	153.0 mm (6.0 in)
1991	155.0 mm (6.1 in)
1992	100.0 mm (3.9 in)
1993	32.0 mm (1.3 in)
1994	68.0 mm (2.7 in)
1995	93.0 mm (3.7 in)
1996	121.2 mm (4.8 in)
1997	47.6 mm (1.9 in)
1998	62.0 mm (2.4 in)
1999	276.2 mm (10.9 in)
2000	34.0 mm (1.3 in)
2001	95.6 mm (3.8 in)
2002	70.0 mm (2.8 in)
2003	61.4 mm (2.4 in)
2004	140.0 mm (5.5 in)
2005	69.4 mm (2.7 in)
2006	52.4 mm (2.1 in)
2007	59.6 mm (2.3 in)
2008	66.0 mm (2.6 in)
2009	147.6 mm (5.8 in)
2010	152.0 mm (6.0 in)
2011	192.0 mm (7.6 in)
2012	63.4 mm (2.5 in)
2013	111.2 mm (4.4 in)
2014	162.0 mm (6.4 in)
2015	75.0 mm (3.0 in)
2016	89.2 mm (3.5 in)
2017	126.6 mm (5.0 in)
2018	62.6 mm (2.5 in)
2019	52.0 mm (2.0 in)
2020	58.2 mm (2.3 in)
2021	87.4 mm (3.4 in)
2022	237.0 mm (9.3 in)
2023	40.8 mm (1.6 in)
2024	41.2 mm (1.6 in)
2025	59.6 mm (2.3 in)
2026	97.0 mm (3.8 in)

Wettest five days (Rx5day)

The wettest five days of the year at Somerset Dam, 1936 to 2026. The record is 617.9 mm (24.3 in) in 2022, marked on the chart; the median year is 146.5 mm (5.8 in).

Wettest five days (Rx5day) at Somerset Dam by year
Year	Wettest five days (Rx5day)
1936	30.5 mm (1.2 in)
1937	155.4 mm (6.1 in)
1938	164.5 mm (6.5 in)
1939	168.2 mm (6.6 in)
1940	182.2 mm (7.2 in)
1941	94.8 mm (3.7 in)
1942	148.9 mm (5.9 in)
1943	248.6 mm (9.8 in)
1944	240.5 mm (9.5 in)
1945	103.4 mm (4.1 in)
1946	178.6 mm (7.0 in)
1947	127.2 mm (5.0 in)
1948	135.1 mm (5.3 in)
1949	140.5 mm (5.5 in)
1950	188.9 mm (7.4 in)
1951	229.4 mm (9.0 in)
1952	71.0 mm (2.8 in)
1953	191.5 mm (7.5 in)
1954	186.7 mm (7.4 in)
1955	198.4 mm (7.8 in)
1956	375.2 mm (14.8 in)
1957	67.2 mm (2.6 in)
1958	159.2 mm (6.3 in)
1959	218.2 mm (8.6 in)
1960	105.2 mm (4.1 in)
1961	105.5 mm (4.2 in)
1962	165.9 mm (6.5 in)
1963	193.0 mm (7.6 in)
1964	139.0 mm (5.5 in)
1965	214.5 mm (8.4 in)
1966	96.8 mm (3.8 in)
1967	121.8 mm (4.8 in)
1968	450.1 mm (17.7 in)
1969	95.0 mm (3.7 in)
1970	321.3 mm (12.6 in)
1971	156.3 mm (6.2 in)
1972	146.5 mm (5.8 in)
1973	280.4 mm (11.0 in)
1974	305.6 mm (12.0 in)
1975	141.4 mm (5.6 in)
1976	169.4 mm (6.7 in)
1977	62.0 mm (2.4 in)
1978	87.0 mm (3.4 in)
1979	141.0 mm (5.6 in)
1980	141.2 mm (5.6 in)
1981	174.0 mm (6.9 in)
1982	202.6 mm (8.0 in)
1983	180.8 mm (7.1 in)
1984	114.6 mm (4.5 in)
1985	111.8 mm (4.4 in)
1986	123.2 mm (4.9 in)
1987	116.6 mm (4.6 in)
1988	247.6 mm (9.7 in)
1989	254.3 mm (10.0 in)
1990	155.2 mm (6.1 in)
1991	209.0 mm (8.2 in)
1992	217.0 mm (8.5 in)
1993	56.3 mm (2.2 in)
1994	126.0 mm (5.0 in)
1995	127.0 mm (5.0 in)
1996	286.4 mm (11.3 in)
1997	92.4 mm (3.6 in)
1998	121.8 mm (4.8 in)
1999	379.8 mm (15.0 in)
2000	96.8 mm (3.8 in)
2001	159.6 mm (6.3 in)
2002	133.0 mm (5.2 in)
2003	111.8 mm (4.4 in)
2004	143.0 mm (5.6 in)
2005	103.8 mm (4.1 in)
2006	77.4 mm (3.0 in)
2007	81.6 mm (3.2 in)
2008	118.6 mm (4.7 in)
2009	196.6 mm (7.7 in)
2010	180.8 mm (7.1 in)
2011	499.0 mm (19.6 in)
2012	173.9 mm (6.8 in)
2013	213.2 mm (8.4 in)
2014	209.4 mm (8.2 in)
2015	94.2 mm (3.7 in)
2016	21.8 mm (0.9 in)
2017	140.6 mm (5.5 in)
2018	154.8 mm (6.1 in)
2019	90.2 mm (3.6 in)
2020	157.4 mm (6.2 in)
2021	89.0 mm (3.5 in)
2022	617.9 mm (24.3 in)
2023	74.6 mm (2.9 in)
2024	128.4 mm (5.1 in)
2025	86.0 mm (3.4 in)
2026	127.2 mm (5.0 in)

Longest dry spell (CDD)

The longest dry spell of the year at Somerset Dam, 1936 to 2026. The record is 78 days in 1946, marked on the chart; the median year is 29 days.

Longest dry spell (CDD) at Somerset Dam by year
Year	Longest dry spell (CDD)
1936	18 days
1937	35 days
1938	22 days
1939	57 days
1940	44 days
1941	51 days
1942	26 days
1943	30 days
1944	34 days
1945	25 days
1946	78 days
1947	46 days
1948	35 days
1949	26 days
1950	25 days
1951	45 days
1952	30 days
1953	31 days
1954	24 days
1955	24 days
1956	20 days
1957	59 days
1958	29 days
1959	24 days
1960	33 days
1961	27 days
1962	28 days
1963	32 days
1964	19 days
1965	33 days
1966	24 days
1967	39 days
1968	35 days
1969	33 days
1970	22 days
1971	35 days
1972	39 days
1973	25 days
1974	30 days
1975	32 days
1976	27 days
1977	28 days
1978	30 days
1979	29 days
1980	53 days
1981	34 days
1982	44 days
1983	17 days
1984	24 days
1985	35 days
1986	29 days
1987	19 days
1988	18 days
1989	20 days
1990	25 days
1991	65 days
1992	19 days
1993	35 days
1994	28 days
1995	38 days
1996	25 days
1997	24 days
1998	30 days
1999	15 days
2000	25 days
2001	26 days
2002	43 days
2003	32 days
2004	48 days
2005	25 days
2006	28 days
2007	53 days
2008	33 days
2009	46 days
2010	4 days
2011	22 days
2012	33 days
2013	39 days
2014	15 days
2015	10 days
2016	2 days
2017	46 days
2018	26 days
2019	51 days
2020	36 days
2021	30 days
2022	24 days
2023	28 days
2024	28 days
2025	52 days
2026	21 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

84 years, 1937 to 2025

A day with at least 87.4 mm (3.4 in) of rain is expected about once in 2 years. A day with at least 275.8 mm (10.9 in) of rain is expected about once in 100 years.

Rainfall return levels at Somerset Dam: the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	87.4 mm (3.4 in)
5 years	129.1 mm (5.1 in)
10 years	159.9 mm (6.3 in)
25 years	202.8 mm (8.0 in)
50 years	238.0 mm (9.4 in)
100 years	275.8 mm (10.9 in)	Longer than the 84 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, 84 years of values from 1937 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: 276.2 mm (10.9 in) in 1999; 248.9 mm (9.8 in) in 1956; 237.0 mm (9.3 in) in 2022.

Download the Data

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