Swan Hill Post Office Weather Records (ASN00077042)

Record envelope, standing records and threshold days for Swan Hill Post Office (ASN00077042), Australia, with 113 years of record.

Key Facts for Swan Hill Post Office

Swan Hill Post Office (ASN00077042) is a weather station in Australia at -35.34 latitude and 143.55 longitude, 70 m (230 ft) above sea level.
The station reports from 1884 to 1996, 113 years of record.
1,464 records set at Swan Hill Post Office still stand.
Records are tracked for tmax, tmin, prcp: an element needs 30 years of data to be eligible.
Swan Hill Post Office set a daily record low minimum temperature of 7.8 C (46.0 F) on 8 December 1996.

About the Station

Location: Australia, -35.34 latitude, 143.55 longitude.
Elevation: 70 m (230 ft).
Period of record: 1884 to 1996, 113 years.
Eligible elements: tmax, tmin, 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 Swan Hill 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 Swan Hill Post Office, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	46.1 C (115.0 F)	7.0 C (44.6 F)	n/a	n/a
Feb	43.4 C (110.1 F)	6.4 C (43.5 F)	n/a	n/a
Mar	40.0 C (104.0 F)	4.4 C (39.9 F)	n/a	n/a
Apr	35.5 C (95.9 F)	2.5 C (36.5 F)	n/a	n/a
May	29.5 C (85.1 F)	0.0 C (32.0 F)	n/a	n/a
Jun	23.2 C (73.8 F)	-3.2 C (26.2 F)	n/a	n/a
Jul	26.5 C (79.7 F)	-3.6 C (25.5 F)	n/a	n/a
Aug	28.6 C (83.5 F)	-2.2 C (28.0 F)	n/a	n/a
Sep	33.3 C (91.9 F)	0.1 C (32.2 F)	n/a	n/a
Oct	38.0 C (100.4 F)	0.0 C (32.0 F)	n/a	n/a
Nov	42.6 C (108.7 F)	2.4 C (36.3 F)	n/a	n/a
Dec	43.5 C (110.3 F)	4.4 C (39.9 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Swan Hill Post Office still stand. 1960 holds the most, with 60.

Standing records at Swan Hill Post Office by the year they were set
Year set	Standing records
1960	60
1961	32
1962	45
1963	41
1964	47
1965	46
1966	44
1967	47
1968	47
1969	51
1970	46
1971	28
1972	24
1973	32
1974	20
1975	43
1976	31
1977	50
1978	35
1979	32
1980	39
1981	35
1982	55
1983	46
1984	50
1985	40
1986	35
1987	45
1988	41
1989	24
1990	37
1991	35
1992	29
1993	29
1994	44
1995	43
1996	36

All-Time Record Progression

2 new records

2 all-time records were set at Swan Hill Post Office between 19 February 1918 and 2 May 1956. Each dot is a new record.

When Swan Hill Post Office set new all-time records
Date	Kind	Detail
1918-02-19	Record daily precipitation	Record daily precipitation 68.6 mm (2.7 in)
1956-05-02	Record daily precipitation	Record daily precipitation 68.8 mm (2.7 in)

Wettest Day of Each Month

May: 68.8 mm (2.7 in)

The wettest day on record for each calendar month at Swan Hill Post Office. The most was 68.8 mm (2.7 in) on 2 May 1956.

Record daily precipitation for each month at Swan Hill Post Office
Month	Record daily precipitation (mm)	Date
Jan	64.8 mm (2.6 in)	9 January 1897
Feb	68.6 mm (2.7 in)	19 February 1918
Mar	61.2 mm (2.4 in)	22 March 1926
Apr	59.4 mm (2.3 in)	8 April 1889
May	68.8 mm (2.7 in)	2 May 1956
Jun	46.5 mm (1.8 in)	4 June 1923
Jul	48.5 mm (1.9 in)	14 July 1955
Aug	64.0 mm (2.5 in)	15 August 1958
Sep	42.2 mm (1.7 in)	11 September 1964
Oct	49.6 mm (2.0 in)	22 October 1995
Nov	51.1 mm (2.0 in)	28 November 1973
Dec	56.4 mm (2.2 in)	20 December 1885

Period of Record Coverage

1960 to 1996

37 years of record at Swan Hill Post Office, 1960 to 1996. Every year has data for at least 90 percent of its days.

Days with data per year at Swan Hill Post Office
Year	Days with data	Share of year	Complete
1960	365	100%	Yes
1961	365	100%	Yes
1962	365	100%	Yes
1963	365	100%	Yes
1964	366	100%	Yes
1965	348	95%	Yes
1966	352	96%	Yes
1967	365	100%	Yes
1968	366	100%	Yes
1969	364	100%	Yes
1970	365	100%	Yes
1971	365	100%	Yes
1972	365	100%	Yes
1973	363	99%	Yes
1974	365	100%	Yes
1975	365	100%	Yes
1976	366	100%	Yes
1977	365	100%	Yes
1978	362	99%	Yes
1979	362	99%	Yes
1980	366	100%	Yes
1981	365	100%	Yes
1982	364	100%	Yes
1983	365	100%	Yes
1984	366	100%	Yes
1985	365	100%	Yes
1986	363	99%	Yes
1987	365	100%	Yes
1988	365	100%	Yes
1989	360	99%	Yes
1990	363	99%	Yes
1991	364	100%	Yes
1992	363	99%	Yes
1993	365	100%	Yes
1994	363	99%	Yes
1995	365	100%	Yes
1996	351	96%	Yes

Latest Records

Latest records at Swan Hill Post Office
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
8 December 1996	Swan Hill Post Office, AU	daily low min	7.8 C (46.0 F)	0.5 C (0.9 F)	27 years	12 of 100 (Routine)
22 November 1996	Swan Hill Post Office, AU	daily low min	6.0 C (42.8 F)	0.1 C (0.2 F)	25 years	10 of 100 (Routine)
21 November 1996	Swan Hill Post Office, AU	daily low min	5.3 C (41.5 F)	0.3 C (0.5 F)	28 years	11 of 100 (Routine)
19 November 1996	Swan Hill Post Office, AU	daily low min	5.4 C (41.7 F)	0.1 C (0.2 F)	20 years	9 of 100 (Routine)
11 November 1996	Swan Hill Post Office, AU	daily low min (Tie)	5.0 C (41.0 F)	tie	6 years	1 of 100 (Routine)
20 October 1996	Swan Hill Post Office, AU	daily low min	3.0 C (37.4 F)	0.6 C (1.1 F)	11 years	7 of 100 (Routine)
16 October 1996	Swan Hill Post Office, AU	daily high min	19.1 C (66.4 F)	4.1 C (7.4 F)	36 years	24 of 100 (Routine)
11 October 1996	Swan Hill Post Office, AU	daily high min	18.5 C (65.3 F)	1.5 C (2.7 F)	11 years	10 of 100 (Routine)
10 October 1996	Swan Hill Post Office, AU	daily high max	31.0 C (87.8 F)	0.5 C (0.9 F)	18 years	9 of 100 (Routine)
30 September 1996	Swan Hill Post Office, AU	daily low max	14.2 C (57.6 F)	0.3 C (0.5 F)	21 years	9 of 100 (Routine)
29 September 1996	Swan Hill Post Office, AU	daily rain	18.2 mm (0.7 in)	1.4 mm (0.06 in)	32 years	20 of 100 (Routine)
21 September 1996	Swan Hill Post Office, AU	daily low min	0.6 C (33.1 F)	1.4 C (2.5 F)	17 years	12 of 100 (Routine)
18 September 1996	Swan Hill Post Office, AU	daily high max	29.0 C (84.2 F)	2.5 C (4.5 F)	9 years	11 of 100 (Routine)
16 September 1996	Swan Hill Post Office, AU	daily high max	31.1 C (88.0 F)	0.7 C (1.3 F)	15 years	8 of 100 (Routine)
16 September 1996	Swan Hill Post Office, AU	daily high min	14.3 C (57.7 F)	0.3 C (0.5 F)	14 years	7 of 100 (Routine)
19 August 1996	Swan Hill Post Office, AU	daily low min	0.4 C (32.7 F)	0.7 C (1.3 F)	27 years	13 of 100 (Routine)
14 August 1996	Swan Hill Post Office, AU	daily high min	10.4 C (50.7 F)	0.4 C (0.7 F)	3 years	4 of 100 (Routine)
13 August 1996	Swan Hill Post Office, AU	daily high max	22.5 C (72.5 F)	2.4 C (4.3 F)	13 years	13 of 100 (Routine)
19 July 1996	Swan Hill Post Office, AU	daily high min	10.5 C (50.9 F)	2.7 C (4.9 F)	33 years	22 of 100 (Routine)
18 July 1996	Swan Hill Post Office, AU	daily high max	19.2 C (66.6 F)	0.3 C (0.5 F)	24 years	11 of 100 (Routine)

Climate Trend

35 complete years, 1960 to 1995

One stripe for each of 35 complete years at Swan Hill Post Office, 1960 to 1995. Blue stripes are years cooler than the station's own mean of 16.5 C (61.6 F); red stripes are warmer. The coolest year was 1964, at 15.6 C (60.0 F), and the warmest was 1981, at 17.3 C (63.1 F). The strongest colour marks a difference of 0.9 C (1.6 F).

Annual mean temperature at Swan Hill Post Office as warming stripes, 1960 to 1995
Year	Annual mean temperature	Difference from the station mean
1960	15.8 C	-0.61 C
1961	17.0 C	+0.55 C
1962	16.3 C	-0.11 C
1963	16.3 C	-0.11 C
1964	15.6 C	-0.87 C
1965	16.1 C	-0.32 C
1966	15.7 C	-0.80 C
1968	16.4 C	-0.09 C
1969	16.1 C	-0.40 C
1970	15.9 C	-0.58 C
1971	16.4 C	-0.09 C
1972	16.7 C	+0.25 C
1973	16.7 C	+0.29 C
1974	16.3 C	-0.18 C
1975	17.0 C	+0.50 C
1976	16.3 C	-0.18 C
1977	16.6 C	+0.18 C
1978	16.5 C	0.00 C
1979	16.9 C	+0.41 C
1980	17.0 C	+0.57 C
1981	17.3 C	+0.81 C
1982	17.1 C	+0.61 C
1983	16.5 C	+0.01 C
1984	15.9 C	-0.51 C
1985	16.6 C	+0.11 C
1986	15.9 C	-0.60 C
1987	16.3 C	-0.17 C
1988	17.2 C	+0.75 C
1989	16.5 C	+0.06 C
1990	16.9 C	+0.48 C
1991	16.8 C	+0.33 C
1992	15.9 C	-0.51 C
1993	16.7 C	+0.28 C
1994	16.7 C	+0.28 C
1995	16.2 C	-0.22 C

The fitted trend in annual mean temperature here over 1960 to 1995 is 0.14 C (-0.01 to 0.28) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: 0.24 F (-0.01 to 0.50) per decade. The slope is a straight line fitted to 35 complete years; the brackets give its 95 percent interval.

Fitted temperature trends per decade at Swan Hill Post Office
Measure	Per decade (C)	Per decade (F)	Period	Complete years	Reading
Annual mean temperature	0.14 C (-0.01 to 0.28) per decade	0.24 F (-0.01 to 0.50) per decade	1960 to 1995	35	Not clearly different from zero
Mean daily maximum	0.22 C (0.00 to 0.44) per decade	0.39 F (0.00 to 0.78) per decade	1960 to 1995	35	Rise
Mean daily minimum	0.1 C (-0.1 to 0.2) per decade	0.1 F (-0.2 to 0.4) per decade	1960 to 1995	35	Not clearly different from zero

A year is complete when all 12 months have at least 20 days of both daily maximum and daily minimum readings. The annual mean is the mean of the monthly means. The trend describes this one station over this period; it does not say what caused the change.

Extremes by Year

1884 to 1996

Yearly extremes at Swan Hill Post Office: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	46.1 C (115.0 F)	1968	41.7 C (107.1 F)	37
Coldest night (TNn)	-3.6 C (25.5 F)	1982	-0.6 C (30.9 F)	37
Wettest day (Rx1day)	68.8 mm (2.7 in)	1956	33.8 mm (1.3 in)	113
Wettest five days (Rx5day)	98.4 mm (3.9 in)	1993	47.7 mm (1.9 in)	113
Longest dry spell (CDD)	120 days	1923	40 days	113

Hottest day (TXx)

The hottest day of the year at Swan Hill Post Office, 1884 to 1996. The record is 46.1 C (115.0 F) in 1968, marked on the chart; the median year is 41.7 C (107.1 F).

Hottest day (TXx) at Swan Hill Post Office by year
Year	Hottest day (TXx)
1884	n/a
1885	n/a
1886	n/a
1887	n/a
1888	n/a
1889	n/a
1890	n/a
1891	n/a
1892	n/a
1893	n/a
1894	n/a
1895	n/a
1896	n/a
1897	n/a
1898	n/a
1899	n/a
1900	n/a
1901	n/a
1902	n/a
1903	n/a
1904	n/a
1905	n/a
1906	n/a
1907	n/a
1908	n/a
1909	n/a
1910	n/a
1911	n/a
1912	n/a
1913	n/a
1914	n/a
1915	n/a
1916	n/a
1917	n/a
1918	n/a
1919	n/a
1920	n/a
1921	n/a
1922	n/a
1923	n/a
1924	n/a
1925	n/a
1926	n/a
1927	n/a
1928	n/a
1929	n/a
1930	n/a
1931	n/a
1932	n/a
1933	n/a
1934	n/a
1935	n/a
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	n/a
1958	n/a
1959	n/a
1960	40.6 C (105.1 F)
1961	41.1 C (106.0 F)
1962	41.7 C (107.1 F)
1963	40.6 C (105.1 F)
1964	42.2 C (108.0 F)
1965	44.4 C (111.9 F)
1966	41.1 C (106.0 F)
1967	40.6 C (105.1 F)
1968	46.1 C (115.0 F)
1969	42.8 C (109.0 F)
1970	41.7 C (107.1 F)
1971	42.8 C (109.0 F)
1972	43.0 C (109.4 F)
1973	43.0 C (109.4 F)
1974	37.0 C (98.6 F)
1975	42.0 C (107.6 F)
1976	43.5 C (110.3 F)
1977	43.0 C (109.4 F)
1978	39.6 C (103.3 F)
1979	45.5 C (113.9 F)
1980	43.0 C (109.4 F)
1981	43.5 C (110.3 F)
1982	45.6 C (114.1 F)
1983	41.9 C (107.4 F)
1984	37.4 C (99.3 F)
1985	41.7 C (107.1 F)
1986	39.2 C (102.6 F)
1987	40.5 C (104.9 F)
1988	42.8 C (109.0 F)
1989	39.8 C (103.6 F)
1990	44.8 C (112.6 F)
1991	41.4 C (106.5 F)
1992	41.1 C (106.0 F)
1993	42.5 C (108.5 F)
1994	40.7 C (105.3 F)
1995	38.4 C (101.1 F)
1996	41.6 C (106.9 F)

Coldest night (TNn)

The coldest night of the year at Swan Hill Post Office, 1884 to 1996. The record is -3.6 C (25.5 F) in 1982, marked on the chart; the median year is -0.6 C (30.9 F).

Coldest night (TNn) at Swan Hill Post Office by year
Year	Coldest night (TNn)
1884	n/a
1885	n/a
1886	n/a
1887	n/a
1888	n/a
1889	n/a
1890	n/a
1891	n/a
1892	n/a
1893	n/a
1894	n/a
1895	n/a
1896	n/a
1897	n/a
1898	n/a
1899	n/a
1900	n/a
1901	n/a
1902	n/a
1903	n/a
1904	n/a
1905	n/a
1906	n/a
1907	n/a
1908	n/a
1909	n/a
1910	n/a
1911	n/a
1912	n/a
1913	n/a
1914	n/a
1915	n/a
1916	n/a
1917	n/a
1918	n/a
1919	n/a
1920	n/a
1921	n/a
1922	n/a
1923	n/a
1924	n/a
1925	n/a
1926	n/a
1927	n/a
1928	n/a
1929	n/a
1930	n/a
1931	n/a
1932	n/a
1933	n/a
1934	n/a
1935	n/a
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	n/a
1958	n/a
1959	n/a
1960	-0.6 C (30.9 F)
1961	-0.6 C (30.9 F)
1962	-0.6 C (30.9 F)
1963	0.0 C (32.0 F)
1964	-2.2 C (28.0 F)
1965	-2.2 C (28.0 F)
1966	-1.1 C (30.0 F)
1967	-1.1 C (30.0 F)
1968	-1.1 C (30.0 F)
1969	-1.1 C (30.0 F)
1970	-1.4 C (29.5 F)
1971	-0.6 C (30.9 F)
1972	0.0 C (32.0 F)
1973	1.0 C (33.8 F)
1974	-0.5 C (31.1 F)
1975	0.0 C (32.0 F)
1976	-1.0 C (30.2 F)
1977	-1.5 C (29.3 F)
1978	0.0 C (32.0 F)
1979	0.0 C (32.0 F)
1980	1.5 C (34.7 F)
1981	1.0 C (33.8 F)
1982	-3.6 C (25.5 F)
1983	-1.7 C (28.9 F)
1984	-1.6 C (29.1 F)
1985	-3.1 C (26.4 F)
1986	-1.5 C (29.3 F)
1987	0.2 C (32.4 F)
1988	0.5 C (32.9 F)
1989	0.4 C (32.7 F)
1990	1.0 C (33.8 F)
1991	0.0 C (32.0 F)
1992	0.0 C (32.0 F)
1993	0.0 C (32.0 F)
1994	-0.7 C (30.7 F)
1995	-0.4 C (31.3 F)
1996	-0.7 C (30.7 F)

Wettest day (Rx1day)

The wettest day of the year at Swan Hill Post Office, 1884 to 1996. The record is 68.8 mm (2.7 in) in 1956, marked on the chart; the median year is 33.8 mm (1.3 in).

Wettest day (Rx1day) at Swan Hill Post Office by year
Year	Wettest day (Rx1day)
1884	21.8 mm (0.9 in)
1885	56.4 mm (2.2 in)
1886	28.4 mm (1.1 in)
1887	37.1 mm (1.5 in)
1888	12.7 mm (0.5 in)
1889	59.4 mm (2.3 in)
1890	30.5 mm (1.2 in)
1891	39.4 mm (1.6 in)
1892	30.2 mm (1.2 in)
1893	22.9 mm (0.9 in)
1894	50.3 mm (2.0 in)
1895	30.5 mm (1.2 in)
1896	27.9 mm (1.1 in)
1897	64.8 mm (2.6 in)
1898	25.4 mm (1.0 in)
1899	33.3 mm (1.3 in)
1900	22.9 mm (0.9 in)
1901	32.0 mm (1.3 in)
1902	18.3 mm (0.7 in)
1903	35.8 mm (1.4 in)
1904	25.7 mm (1.0 in)
1905	30.7 mm (1.2 in)
1906	42.7 mm (1.7 in)
1907	19.1 mm (0.8 in)
1908	19.3 mm (0.8 in)
1909	33.8 mm (1.3 in)
1910	31.0 mm (1.2 in)
1911	41.7 mm (1.6 in)
1912	24.6 mm (1.0 in)
1913	36.1 mm (1.4 in)
1914	29.0 mm (1.1 in)
1915	22.4 mm (0.9 in)
1916	40.6 mm (1.6 in)
1917	53.3 mm (2.1 in)
1918	68.6 mm (2.7 in)
1919	40.6 mm (1.6 in)
1920	26.7 mm (1.1 in)
1921	24.1 mm (0.9 in)
1922	11.7 mm (0.5 in)
1923	46.5 mm (1.8 in)
1924	29.7 mm (1.2 in)
1925	19.1 mm (0.8 in)
1926	61.2 mm (2.4 in)
1927	12.7 mm (0.5 in)
1928	61.0 mm (2.4 in)
1929	23.1 mm (0.9 in)
1930	46.0 mm (1.8 in)
1931	35.3 mm (1.4 in)
1932	51.3 mm (2.0 in)
1933	26.9 mm (1.1 in)
1934	38.1 mm (1.5 in)
1935	25.9 mm (1.0 in)
1936	38.1 mm (1.5 in)
1937	25.1 mm (1.0 in)
1938	23.6 mm (0.9 in)
1939	25.4 mm (1.0 in)
1940	15.0 mm (0.6 in)
1941	30.7 mm (1.2 in)
1942	36.1 mm (1.4 in)
1943	31.2 mm (1.2 in)
1944	16.8 mm (0.7 in)
1945	23.6 mm (0.9 in)
1946	37.6 mm (1.5 in)
1947	23.4 mm (0.9 in)
1948	42.2 mm (1.7 in)
1949	30.0 mm (1.2 in)
1950	43.2 mm (1.7 in)
1951	23.9 mm (0.9 in)
1952	34.8 mm (1.4 in)
1953	23.4 mm (0.9 in)
1954	35.1 mm (1.4 in)
1955	48.5 mm (1.9 in)
1956	68.8 mm (2.7 in)
1957	37.1 mm (1.5 in)
1958	64.0 mm (2.5 in)
1959	35.6 mm (1.4 in)
1960	51.3 mm (2.0 in)
1961	33.8 mm (1.3 in)
1962	23.4 mm (0.9 in)
1963	33.0 mm (1.3 in)
1964	42.2 mm (1.7 in)
1965	25.9 mm (1.0 in)
1966	24.1 mm (0.9 in)
1967	17.5 mm (0.7 in)
1968	33.8 mm (1.3 in)
1969	59.2 mm (2.3 in)
1970	42.4 mm (1.7 in)
1971	34.0 mm (1.3 in)
1972	23.4 mm (0.9 in)
1973	51.1 mm (2.0 in)
1974	45.0 mm (1.8 in)
1975	42.8 mm (1.7 in)
1976	25.4 mm (1.0 in)
1977	32.8 mm (1.3 in)
1978	40.0 mm (1.6 in)
1979	59.2 mm (2.3 in)
1980	41.6 mm (1.6 in)
1981	23.4 mm (0.9 in)
1982	34.6 mm (1.4 in)
1983	44.6 mm (1.8 in)
1984	29.8 mm (1.2 in)
1985	42.2 mm (1.7 in)
1986	26.8 mm (1.1 in)
1987	36.4 mm (1.4 in)
1988	42.8 mm (1.7 in)
1989	44.0 mm (1.7 in)
1990	36.6 mm (1.4 in)
1991	34.6 mm (1.4 in)
1992	33.2 mm (1.3 in)
1993	45.4 mm (1.8 in)
1994	26.6 mm (1.0 in)
1995	49.6 mm (2.0 in)
1996	18.2 mm (0.7 in)

Wettest five days (Rx5day)

The wettest five days of the year at Swan Hill Post Office, 1884 to 1996. The record is 98.4 mm (3.9 in) in 1993, marked on the chart; the median year is 47.7 mm (1.9 in).

Wettest five days (Rx5day) at Swan Hill Post Office by year
Year	Wettest five days (Rx5day)
1884	22.8 mm (0.9 in)
1885	82.4 mm (3.2 in)
1886	55.1 mm (2.2 in)
1887	51.8 mm (2.0 in)
1888	27.7 mm (1.1 in)
1889	59.4 mm (2.3 in)
1890	36.4 mm (1.4 in)
1891	68.9 mm (2.7 in)
1892	66.5 mm (2.6 in)
1893	49.0 mm (1.9 in)
1894	96.0 mm (3.8 in)
1895	35.6 mm (1.4 in)
1896	46.7 mm (1.8 in)
1897	70.6 mm (2.8 in)
1898	34.0 mm (1.3 in)
1899	53.9 mm (2.1 in)
1900	26.4 mm (1.0 in)
1901	32.0 mm (1.3 in)
1902	26.4 mm (1.0 in)
1903	52.6 mm (2.1 in)
1904	39.9 mm (1.6 in)
1905	53.6 mm (2.1 in)
1906	78.0 mm (3.1 in)
1907	26.7 mm (1.1 in)
1908	36.4 mm (1.4 in)
1909	66.1 mm (2.6 in)
1910	43.1 mm (1.7 in)
1911	93.0 mm (3.7 in)
1912	46.0 mm (1.8 in)
1913	42.7 mm (1.7 in)
1914	39.1 mm (1.5 in)
1915	31.0 mm (1.2 in)
1916	68.3 mm (2.7 in)
1917	83.5 mm (3.3 in)
1918	70.9 mm (2.8 in)
1919	42.2 mm (1.7 in)
1920	57.7 mm (2.3 in)
1921	42.2 mm (1.7 in)
1922	19.8 mm (0.8 in)
1923	71.1 mm (2.8 in)
1924	41.9 mm (1.6 in)
1925	30.6 mm (1.2 in)
1926	61.5 mm (2.4 in)
1927	20.9 mm (0.8 in)
1928	78.5 mm (3.1 in)
1929	33.5 mm (1.3 in)
1930	50.6 mm (2.0 in)
1931	35.3 mm (1.4 in)
1932	79.0 mm (3.1 in)
1933	51.3 mm (2.0 in)
1934	58.7 mm (2.3 in)
1935	46.0 mm (1.8 in)
1936	53.9 mm (2.1 in)
1937	25.2 mm (1.0 in)
1938	24.6 mm (1.0 in)
1939	48.2 mm (1.9 in)
1940	20.8 mm (0.8 in)
1941	30.7 mm (1.2 in)
1942	36.1 mm (1.4 in)
1943	33.8 mm (1.3 in)
1944	17.8 mm (0.7 in)
1945	46.6 mm (1.8 in)
1946	72.5 mm (2.9 in)
1947	33.5 mm (1.3 in)
1948	52.4 mm (2.1 in)
1949	52.3 mm (2.1 in)
1950	65.6 mm (2.6 in)
1951	42.4 mm (1.7 in)
1952	45.5 mm (1.8 in)
1953	37.1 mm (1.5 in)
1954	45.2 mm (1.8 in)
1955	61.3 mm (2.4 in)
1956	77.9 mm (3.1 in)
1957	58.3 mm (2.3 in)
1958	67.4 mm (2.7 in)
1959	41.9 mm (1.6 in)
1960	63.5 mm (2.5 in)
1961	37.3 mm (1.5 in)
1962	30.6 mm (1.2 in)
1963	47.5 mm (1.9 in)
1964	47.7 mm (1.9 in)
1965	42.2 mm (1.7 in)
1966	41.7 mm (1.6 in)
1967	24.3 mm (1.0 in)
1968	43.7 mm (1.7 in)
1969	72.7 mm (2.9 in)
1970	54.8 mm (2.2 in)
1971	65.5 mm (2.6 in)
1972	33.8 mm (1.3 in)
1973	65.5 mm (2.6 in)
1974	67.2 mm (2.6 in)
1975	84.2 mm (3.3 in)
1976	40.2 mm (1.6 in)
1977	65.6 mm (2.6 in)
1978	56.7 mm (2.2 in)
1979	72.0 mm (2.8 in)
1980	62.6 mm (2.5 in)
1981	51.0 mm (2.0 in)
1982	40.6 mm (1.6 in)
1983	80.4 mm (3.2 in)
1984	48.2 mm (1.9 in)
1985	51.0 mm (2.0 in)
1986	43.6 mm (1.7 in)
1987	39.8 mm (1.6 in)
1988	58.2 mm (2.3 in)
1989	48.8 mm (1.9 in)
1990	39.6 mm (1.6 in)
1991	39.6 mm (1.6 in)
1992	51.2 mm (2.0 in)
1993	98.4 mm (3.9 in)
1994	34.2 mm (1.3 in)
1995	54.0 mm (2.1 in)
1996	38.2 mm (1.5 in)

Longest dry spell (CDD)

The longest dry spell of the year at Swan Hill Post Office, 1884 to 1996. The record is 120 days in 1923, marked on the chart; the median year is 40 days.

Longest dry spell (CDD) at Swan Hill Post Office by year
Year	Longest dry spell (CDD)
1884	23 days
1885	39 days
1886	72 days
1887	24 days
1888	81 days
1889	43 days
1890	33 days
1891	59 days
1892	52 days
1893	69 days
1894	31 days
1895	48 days
1896	37 days
1897	54 days
1898	42 days
1899	37 days
1900	30 days
1901	41 days
1902	58 days
1903	33 days
1904	48 days
1905	39 days
1906	36 days
1907	36 days
1908	37 days
1909	30 days
1910	61 days
1911	49 days
1912	92 days
1913	41 days
1914	52 days
1915	67 days
1916	46 days
1917	27 days
1918	41 days
1919	42 days
1920	50 days
1921	30 days
1922	38 days
1923	120 days
1924	34 days
1925	42 days
1926	73 days
1927	48 days
1928	47 days
1929	34 days
1930	42 days
1931	44 days
1932	36 days
1933	37 days
1934	53 days
1935	34 days
1936	36 days
1937	63 days
1938	50 days
1939	26 days
1940	72 days
1941	35 days
1942	34 days
1943	47 days
1944	46 days
1945	40 days
1946	36 days
1947	30 days
1948	55 days
1949	40 days
1950	35 days
1951	34 days
1952	31 days
1953	32 days
1954	34 days
1955	39 days
1956	42 days
1957	49 days
1958	36 days
1959	46 days
1960	35 days
1961	38 days
1962	35 days
1963	32 days
1964	37 days
1965	70 days
1966	33 days
1967	43 days
1968	32 days
1969	31 days
1970	66 days
1971	30 days
1972	41 days
1973	26 days
1974	22 days
1975	40 days
1976	31 days
1977	50 days
1978	29 days
1979	45 days
1980	49 days
1981	51 days
1982	41 days
1983	59 days
1984	71 days
1985	39 days
1986	56 days
1987	26 days
1988	33 days
1989	28 days
1990	24 days
1991	79 days
1992	24 days
1993	38 days
1994	45 days
1995	53 days
1996	28 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.

Frost Dates and Growing Season

24 years with a frost

Across 24 years with a frost, the median last spring frost at Swan Hill Post Office falls on 6 August and the median first autumn frost on 30 June, which leaves a median of 332 days between them.

Frost dates and growing season at Swan Hill Post Office
Measure	Median, all years	Earliest period	Recent period (1961 to 1995)	Recent against earliest	Fitted trend
Last spring frost	6 August	n/a	6 August	n/a	n/a
First autumn frost	30 June	n/a	30 June	n/a	n/a
Growing days	332 days	n/a	332 days	n/a	n/a

A frost day is a day with a daily minimum at or below 0 C (32 F). The last spring frost and the first autumn frost are the last and first such days of the cold season, and growing days are the days between them. A negative trend for the last spring frost means it comes earlier.

Rainfall Return Levels

112 years, 1885 to 1996

A day with at least 33.2 mm (1.3 in) of rain is expected about once in 2 years. A day with at least 73.1 mm (2.9 in) of rain is expected about once in 100 years.

Rainfall return levels at Swan Hill 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	33.2 mm (1.3 in)
5 years	44.8 mm (1.8 in)
10 years	52.1 mm (2.1 in)
25 years	60.9 mm (2.4 in)
50 years	67.1 mm (2.6 in)
100 years	73.1 mm (2.9 in)

The levels come from a generalised extreme value (GEV) distribution fitted by L-moments to the wettest-day total of each year, 112 years of values from 1885 to 1996.

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: 68.8 mm (2.7 in) in 1956; 68.6 mm (2.7 in) in 1918; 64.8 mm (2.6 in) in 1897.

Download the Data

Data for Swan Hill Post Office standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Swan Hill 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 2026-10-13 (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).