Somerton Post Office Weather Records (ASN00055050)

Record envelope, standing records and threshold days for Somerton Post Office (ASN00055050), Australia, with 94 years of record.

Key Facts for Somerton Post Office

Somerton Post Office (ASN00055050) is a weather station in Australia at -30.94 latitude and 150.64 longitude, 323 m (1,060 ft) above sea level.
The station reports from 1903 to 1996, 94 years of record.
0 records set at Somerton Post Office still stand.
Records are tracked for prcp: an element needs 30 years of data to be eligible.
Somerton Post Office set a daily record precipitation of 21.0 mm (0.8 in) on 3 January 1996.

About the Station

Location: Australia, -30.94 latitude, 150.64 longitude.
Elevation: 323 m (1,060 ft).
Period of record: 1903 to 1996, 94 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 Somerton Post Office. 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 Somerton Post Office, 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 Somerton Post Office still stand.

All-Time Record Progression

1 new records

1 all-time records were set at Somerton Post Office between 31 January 1971 and 31 January 1971. Each dot is a new record.

Wettest Day of Each Month

Jan: 128.3 mm (5.1 in)

The wettest day on record for each calendar month at Somerton Post Office. The most was 128.3 mm (5.1 in) on 31 January 1971.

Record daily precipitation for each month at Somerton Post Office
Month	Record daily precipitation (mm)	Date
Jan	128.3 mm (5.1 in)	31 January 1971
Feb	106.7 mm (4.2 in)	25 February 1955
Mar	93.0 mm (3.7 in)	10 March 1982
Apr	68.8 mm (2.7 in)	1 April 1904
May	83.1 mm (3.3 in)	13 May 1968
Jun	65.0 mm (2.6 in)	2 June 1993
Jul	57.7 mm (2.3 in)	10 July 1942
Aug	64.8 mm (2.6 in)	25 August 1949
Sep	45.7 mm (1.8 in)	9 September 1949
Oct	71.9 mm (2.8 in)	20 October 1962
Nov	71.1 mm (2.8 in)	15 November 1917
Dec	105.7 mm (4.2 in)	18 December 1907

Latest Records

Latest records at Somerton Post Office
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
3 January 1996	Somerton Post Office, AU	daily rain	21.0 mm (0.8 in)	1.7 mm (0.07 in)	34 years	19 of 100 (Routine)
17 November 1995	Somerton Post Office, AU	daily rain	35.0 mm (1.4 in)	2.5 mm (0.10 in)	33 years	21 of 100 (Routine)
25 December 1994	Somerton Post Office, AU	daily rain	14.6 mm (0.6 in)	3.7 mm (0.15 in)	91 years	20 of 100 (Routine)
8 December 1993	Somerton Post Office, AU	daily rain	50.0 mm (2.0 in)	23.3 mm (0.9 in)	66 years	46 of 100 (Notable)
2 June 1993	Somerton Post Office, AU	monthly rain	65.0 mm (2.6 in)	10.1 mm (0.4 in)	72 years	51 of 100 (Notable)
27 February 1993	Somerton Post Office, AU	daily rain	42.4 mm (1.7 in)	20.4 mm (0.8 in)	17 years	27 of 100 (Routine)
14 December 1992	Somerton Post Office, AU	daily rain	21.0 mm (0.8 in)	0.7 mm (0.03 in)	59 years	20 of 100 (Routine)
5 December 1992	Somerton Post Office, AU	daily rain	27.6 mm (1.1 in)	4.6 mm (0.18 in)	9 years	14 of 100 (Routine)
9 August 1992	Somerton Post Office, AU	daily rain	11.6 mm (0.5 in)	5.2 mm (0.20 in)	19 years	19 of 100 (Routine)
18 July 1992	Somerton Post Office, AU	daily rain	15.0 mm (0.6 in)	3.6 mm (0.14 in)	19 years	18 of 100 (Routine)
28 April 1992	Somerton Post Office, AU	daily rain	15.4 mm (0.6 in)	4.8 mm (0.19 in)	4 years	14 of 100 (Routine)
9 February 1992	Somerton Post Office, AU	daily rain	44.0 mm (1.7 in)	7.2 mm (0.28 in)	36 years	23 of 100 (Routine)
7 June 1991	Somerton Post Office, AU	daily rain	12.0 mm (0.5 in)	0.8 mm (0.03 in)	40 years	20 of 100 (Routine)
22 May 1991	Somerton Post Office, AU	daily rain	34.6 mm (1.4 in)	11.0 mm (0.4 in)	24 years	25 of 100 (Routine)
30 March 1991	Somerton Post Office, AU	daily rain	22.0 mm (0.9 in)	10.6 mm (0.4 in)	32 years	20 of 100 (Routine)
7 February 1991	Somerton Post Office, AU	daily rain	36.0 mm (1.4 in)	9.8 mm (0.39 in)	71 years	35 of 100 (Notable)
6 January 1991	Somerton Post Office, AU	daily rain	50.0 mm (2.0 in)	7.8 mm (0.31 in)	49 years	26 of 100 (Routine)
27 July 1990	Somerton Post Office, AU	daily rain	29.4 mm (1.2 in)	1.4 mm (0.06 in)	5 years	10 of 100 (Routine)
20 April 1990	Somerton Post Office, AU	daily rain	36.8 mm (1.4 in)	24.9 mm (1.0 in)	55 years	46 of 100 (Notable)
17 April 1990	Somerton Post Office, AU	daily rain	6.2 mm (0.24 in)	0.1 mm (0.00 in)	79 years	20 of 100 (Routine)

Extremes by Year

1903 to 1996

Yearly extremes at Somerton Post Office: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Wettest day (Rx1day)	128.3 mm (5.1 in)	1971	52.0 mm (2.0 in)	90
Wettest five days (Rx5day)	311.9 mm (12.3 in)	1910	78.4 mm (3.1 in)	90
Longest dry spell (CDD)	98 days	1984	39 days	90

Wettest day (Rx1day)

The wettest day of the year at Somerton Post Office, 1903 to 1996. The record is 128.3 mm (5.1 in) in 1971, marked on the chart; the median year is 52.0 mm (2.0 in).

Wettest day (Rx1day) at Somerton Post Office by year
Year	Wettest day (Rx1day)
1903	59.7 mm (2.4 in)
1904	85.9 mm (3.4 in)
1905	55.9 mm (2.2 in)
1906	58.9 mm (2.3 in)
1907	105.7 mm (4.2 in)
1908	85.6 mm (3.4 in)
1909	59.2 mm (2.3 in)
1910	110.7 mm (4.4 in)
1911	49.8 mm (2.0 in)
1912	36.1 mm (1.4 in)
1913	59.4 mm (2.3 in)
1914	58.9 mm (2.3 in)
1915	38.1 mm (1.5 in)
1916	38.9 mm (1.5 in)
1917	71.1 mm (2.8 in)
1918	81.3 mm (3.2 in)
1919	63.0 mm (2.5 in)
1920	54.9 mm (2.2 in)
1921	50.8 mm (2.0 in)
1922	57.2 mm (2.3 in)
1923	43.4 mm (1.7 in)
1924	66.0 mm (2.6 in)
1925	48.3 mm (1.9 in)
1926	33.0 mm (1.3 in)
1927	38.1 mm (1.5 in)
1928	49.5 mm (1.9 in)
1929	5.6 mm (0.22 in)
1930	41.9 mm (1.6 in)
1931	46.2 mm (1.8 in)
1932	44.5 mm (1.8 in)
1933	61.0 mm (2.4 in)
1934	41.1 mm (1.6 in)
1935	43.2 mm (1.7 in)
1940	43.9 mm (1.7 in)
1941	61.7 mm (2.4 in)
1942	58.4 mm (2.3 in)
1943	45.7 mm (1.8 in)
1944	48.0 mm (1.9 in)
1945	34.8 mm (1.4 in)
1946	20.8 mm (0.8 in)
1947	63.5 mm (2.5 in)
1948	50.8 mm (2.0 in)
1949	71.6 mm (2.8 in)
1950	82.8 mm (3.3 in)
1951	53.3 mm (2.1 in)
1952	47.5 mm (1.9 in)
1953	50.8 mm (2.0 in)
1954	41.9 mm (1.6 in)
1955	106.7 mm (4.2 in)
1956	64.3 mm (2.5 in)
1957	67.1 mm (2.6 in)
1958	49.5 mm (1.9 in)
1959	52.3 mm (2.1 in)
1960	52.3 mm (2.1 in)
1961	41.4 mm (1.6 in)
1962	71.9 mm (2.8 in)
1963	39.9 mm (1.6 in)
1964	103.1 mm (4.1 in)
1965	39.6 mm (1.6 in)
1966	35.3 mm (1.4 in)
1967	49.5 mm (1.9 in)
1968	83.1 mm (3.3 in)
1969	52.6 mm (2.1 in)
1970	56.4 mm (2.2 in)
1971	128.3 mm (5.1 in)
1972	31.5 mm (1.2 in)
1973	67.3 mm (2.6 in)
1974	91.0 mm (3.6 in)
1975	64.0 mm (2.5 in)
1976	88.0 mm (3.5 in)
1977	48.0 mm (1.9 in)
1978	52.0 mm (2.0 in)
1979	40.0 mm (1.6 in)
1980	55.0 mm (2.2 in)
1981	52.0 mm (2.0 in)
1982	93.0 mm (3.7 in)
1983	33.2 mm (1.3 in)
1984	111.0 mm (4.4 in)
1985	37.0 mm (1.5 in)
1986	13.2 mm (0.5 in)
1987	62.0 mm (2.4 in)
1988	46.0 mm (1.8 in)
1989	43.4 mm (1.7 in)
1990	42.8 mm (1.7 in)
1991	52.6 mm (2.1 in)
1992	44.0 mm (1.7 in)
1993	65.0 mm (2.6 in)
1994	23.2 mm (0.9 in)
1995	35.0 mm (1.4 in)
1996	21.0 mm (0.8 in)

Wettest five days (Rx5day)

The wettest five days of the year at Somerton Post Office, 1903 to 1996. The record is 311.9 mm (12.3 in) in 1910, marked on the chart; the median year is 78.4 mm (3.1 in).

Wettest five days (Rx5day) at Somerton Post Office by year
Year	Wettest five days (Rx5day)
1903	83.3 mm (3.3 in)
1904	127.7 mm (5.0 in)
1905	96.5 mm (3.8 in)
1906	68.6 mm (2.7 in)
1907	140.0 mm (5.5 in)
1908	152.4 mm (6.0 in)
1909	99.1 mm (3.9 in)
1910	311.9 mm (12.3 in)
1911	78.5 mm (3.1 in)
1912	54.4 mm (2.1 in)
1913	84.3 mm (3.3 in)
1914	100.5 mm (4.0 in)
1915	51.1 mm (2.0 in)
1916	68.8 mm (2.7 in)
1917	113.8 mm (4.5 in)
1918	168.7 mm (6.6 in)
1919	63.0 mm (2.5 in)
1920	132.8 mm (5.2 in)
1921	105.4 mm (4.1 in)
1922	67.1 mm (2.6 in)
1923	78.2 mm (3.1 in)
1924	85.9 mm (3.4 in)
1925	54.7 mm (2.2 in)
1926	46.0 mm (1.8 in)
1927	75.4 mm (3.0 in)
1928	52.4 mm (2.1 in)
1929	8.9 mm (0.35 in)
1930	81.1 mm (3.2 in)
1931	60.8 mm (2.4 in)
1932	60.7 mm (2.4 in)
1933	115.3 mm (4.5 in)
1934	73.2 mm (2.9 in)
1935	70.7 mm (2.8 in)
1940	43.9 mm (1.7 in)
1941	115.5 mm (4.5 in)
1942	124.3 mm (4.9 in)
1943	71.6 mm (2.8 in)
1944	87.8 mm (3.5 in)
1945	39.9 mm (1.6 in)
1946	46.2 mm (1.8 in)
1947	90.2 mm (3.6 in)
1948	63.5 mm (2.5 in)
1949	88.4 mm (3.5 in)
1950	121.9 mm (4.8 in)
1951	55.8 mm (2.2 in)
1952	83.8 mm (3.3 in)
1953	83.8 mm (3.3 in)
1954	41.9 mm (1.6 in)
1955	258.9 mm (10.2 in)
1956	122.9 mm (4.8 in)
1957	67.1 mm (2.6 in)
1958	76.5 mm (3.0 in)
1959	52.3 mm (2.1 in)
1960	105.2 mm (4.1 in)
1961	90.2 mm (3.6 in)
1962	103.2 mm (4.1 in)
1963	53.1 mm (2.1 in)
1964	156.6 mm (6.2 in)
1965	63.8 mm (2.5 in)
1966	46.5 mm (1.8 in)
1967	80.5 mm (3.2 in)
1968	110.4 mm (4.3 in)
1969	79.3 mm (3.1 in)
1970	100.5 mm (4.0 in)
1971	305.3 mm (12.0 in)
1972	67.3 mm (2.6 in)
1973	85.1 mm (3.4 in)
1974	141.5 mm (5.6 in)
1975	78.0 mm (3.1 in)
1976	168.4 mm (6.6 in)
1977	82.5 mm (3.2 in)
1978	52.0 mm (2.0 in)
1979	40.0 mm (1.6 in)
1980	75.0 mm (3.0 in)
1981	53.0 mm (2.1 in)
1982	108.0 mm (4.3 in)
1983	64.4 mm (2.5 in)
1984	144.0 mm (5.7 in)
1985	57.4 mm (2.3 in)
1986	18.6 mm (0.7 in)
1987	76.4 mm (3.0 in)
1988	83.6 mm (3.3 in)
1989	64.2 mm (2.5 in)
1990	77.6 mm (3.1 in)
1991	83.6 mm (3.3 in)
1992	69.2 mm (2.7 in)
1993	88.0 mm (3.5 in)
1994	34.6 mm (1.4 in)
1995	59.0 mm (2.3 in)
1996	41.4 mm (1.6 in)

Longest dry spell (CDD)

The longest dry spell of the year at Somerton Post Office, 1903 to 1996. The record is 98 days in 1984, marked on the chart; the median year is 39 days.

Longest dry spell (CDD) at Somerton Post Office by year
Year	Longest dry spell (CDD)
1903	23 days
1904	31 days
1905	30 days
1906	32 days
1907	35 days
1908	26 days
1909	24 days
1910	33 days
1911	31 days
1912	54 days
1913	34 days
1914	46 days
1915	35 days
1916	32 days
1917	35 days
1918	42 days
1919	46 days
1920	56 days
1921	27 days
1922	37 days
1923	71 days
1924	23 days
1925	40 days
1926	47 days
1927	33 days
1928	17 days
1929	17 days
1930	22 days
1931	27 days
1932	24 days
1933	22 days
1934	60 days
1935	28 days
1940	51 days
1941	51 days
1942	59 days
1943	44 days
1944	46 days
1945	31 days
1946	20 days
1947	31 days
1948	27 days
1949	40 days
1950	36 days
1951	60 days
1952	41 days
1953	49 days
1954	44 days
1955	50 days
1956	53 days
1957	58 days
1958	27 days
1959	48 days
1960	42 days
1961	29 days
1962	36 days
1963	23 days
1964	39 days
1965	44 days
1966	40 days
1967	57 days
1968	43 days
1969	24 days
1970	37 days
1971	81 days
1972	41 days
1973	31 days
1974	73 days
1975	59 days
1976	40 days
1977	43 days
1978	48 days
1979	40 days
1980	59 days
1981	45 days
1982	80 days
1983	29 days
1984	98 days
1985	32 days
1986	16 days
1987	33 days
1988	37 days
1989	43 days
1990	25 days
1991	49 days
1992	27 days
1993	41 days
1994	39 days
1995	58 days
1996	2 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

75 years, 1904 to 1995

A day with at least 53.8 mm (2.1 in) of rain is expected about once in 2 years. A day with at least 124.7 mm (4.9 in) of rain is expected about once in 100 years.

Rainfall return levels at Somerton Post Office: the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	53.8 mm (2.1 in)
5 years	70.4 mm (2.8 in)
10 years	82.2 mm (3.2 in)
25 years	98.4 mm (3.9 in)
50 years	111.2 mm (4.4 in)
100 years	124.7 mm (4.9 in)	Longer than the 75 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, 75 years of values from 1904 to 1995.

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: 110.7 mm (4.4 in) in 1910; 106.7 mm (4.2 in) in 1955; 105.7 mm (4.2 in) in 1907.

Download the Data

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