Portland Downs Weather Records (ASN00036039)

Record envelope, standing records and threshold days for Portland Downs (ASN00036039), Australia, with 88 years of record.

Key Facts for Portland Downs

Portland Downs (ASN00036039) is a weather station in Australia at -24.13 latitude and 144.58 longitude, 213 m (700 ft) above sea level.
The station reports from 1887 to 1974, 88 years of record.
0 records set at Portland Downs still stand.
Records are tracked for prcp: an element needs 30 years of data to be eligible.
Portland Downs set a daily record precipitation of 15.6 mm (0.6 in) on 29 January 1974.

About the Station

Location: Australia, -24.13 latitude, 144.58 longitude.
Elevation: 213 m (700 ft).
Period of record: 1887 to 1974, 88 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 Portland Downs. 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 Portland Downs, 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 Portland Downs still stand.

All-Time Record Progression

2 new records

2 all-time records were set at Portland Downs between 2 April 1959 and 3 January 1961. Each dot is a new record.

When Portland Downs set new all-time records
Date	Kind	Detail
1959-04-02	Record daily precipitation	Record daily precipitation 134.4 mm (5.3 in)
1961-01-03	Record daily precipitation	Record daily precipitation 142.2 mm (5.6 in)

Wettest Day of Each Month

Jan: 142.2 mm (5.6 in)

The wettest day on record for each calendar month at Portland Downs. The most was 142.2 mm (5.6 in) on 3 January 1961.

Record daily precipitation for each month at Portland Downs
Month	Record daily precipitation (mm)	Date
Jan	142.2 mm (5.6 in)	3 January 1961
Feb	130.3 mm (5.1 in)	1 February 1922
Mar	110.0 mm (4.3 in)	10 March 1965
Apr	134.4 mm (5.3 in)	2 April 1959
May	106.4 mm (4.2 in)	26 May 1942
Jun	64.8 mm (2.6 in)	4 June 1923
Jul	62.7 mm (2.5 in)	1 July 1921
Aug	51.3 mm (2.0 in)	26 August 1924
Sep	82.8 mm (3.3 in)	24 September 1917
Oct	125.7 mm (4.9 in)	20 October 1920
Nov	70.1 mm (2.8 in)	22 November 1960
Dec	122.2 mm (4.8 in)	25 December 1971

Latest Records

Latest records at Portland Downs
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
29 January 1974	Portland Downs, AU	daily rain	15.6 mm (0.6 in)	5.9 mm (0.23 in)	12 years	14 of 100 (Routine)
17 January 1974	Portland Downs, AU	daily rain	60.6 mm (2.4 in)	22.5 mm (0.9 in)	20 years	26 of 100 (Routine)
14 January 1974	Portland Downs, AU	daily rain	27.0 mm (1.1 in)	2.4 mm (0.09 in)	12 years	12 of 100 (Routine)
1 January 1974	Portland Downs, AU	daily rain	94.0 mm (3.7 in)	81.3 mm (3.2 in)	56 years	65 of 100 (Major)
28 May 1973	Portland Downs, AU	daily rain	14.2 mm (0.6 in)	1.5 mm (0.06 in)	52 years	20 of 100 (Routine)
28 April 1973	Portland Downs, AU	daily rain	11.7 mm (0.5 in)	11.7 mm (0.5 in)	85 years	20 of 100 (Routine)
27 April 1973	Portland Downs, AU	daily rain	61.0 mm (2.4 in)	58.5 mm (2.3 in)	18 years	44 of 100 (Notable)
28 March 1973	Portland Downs, AU	daily rain	30.5 mm (1.2 in)	4.8 mm (0.19 in)	44 years	23 of 100 (Routine)
18 February 1973	Portland Downs, AU	daily rain	56.9 mm (2.2 in)	3.1 mm (0.12 in)	49 years	23 of 100 (Routine)
6 February 1973	Portland Downs, AU	daily rain	48.3 mm (1.9 in)	8.4 mm (0.33 in)	26 years	19 of 100 (Routine)
9 December 1972	Portland Downs, AU	daily rain	10.9 mm (0.4 in)	4.0 mm (0.16 in)	18 years	15 of 100 (Routine)
24 November 1972	Portland Downs, AU	daily rain	20.3 mm (0.8 in)	7.9 mm (0.31 in)	11 years	18 of 100 (Routine)
11 November 1972	Portland Downs, AU	daily rain	15.2 mm (0.6 in)	1.5 mm (0.06 in)	9 years	11 of 100 (Routine)
11 May 1972	Portland Downs, AU	daily rain	24.6 mm (1.0 in)	13.9 mm (0.5 in)	46 years	20 of 100 (Routine)
25 December 1971	Portland Downs, AU	monthly rain	122.2 mm (4.8 in)	52.3 mm (2.1 in)	52 years	72 of 100 (Major)
3 December 1971	Portland Downs, AU	daily rain	11.4 mm (0.4 in)	2.8 mm (0.11 in)	41 years	20 of 100 (Routine)
7 November 1971	Portland Downs, AU	daily rain	5.3 mm (0.21 in)	1.5 mm (0.06 in)	28 years	17 of 100 (Routine)
13 September 1971	Portland Downs, AU	daily rain	7.6 mm (0.30 in)	0.7 mm (0.03 in)	53 years	20 of 100 (Routine)
16 April 1971	Portland Downs, AU	daily rain	21.1 mm (0.8 in)	18.3 mm (0.7 in)	16 years	20 of 100 (Routine)
15 April 1971	Portland Downs, AU	daily rain	19.1 mm (0.8 in)	19.1 mm (0.8 in)	83 years	20 of 100 (Routine)

Extremes by Year

1887 to 1974

Yearly extremes at Portland Downs: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Wettest day (Rx1day)	142.2 mm (5.6 in)	1961	50.4 mm (2.0 in)	86
Wettest five days (Rx5day)	248.5 mm (9.8 in)	1963	78.0 mm (3.1 in)	86
Longest dry spell (CDD)	218 days	1965	62 days	86

Wettest day (Rx1day)

The wettest day of the year at Portland Downs, 1887 to 1974. The record is 142.2 mm (5.6 in) in 1961, marked on the chart; the median year is 50.4 mm (2.0 in).

Wettest day (Rx1day) at Portland Downs by year
Year	Wettest day (Rx1day)
1887	0.0 mm (0.00 in)
1888	69.9 mm (2.8 in)
1889	0.0 mm (0.00 in)
1892	0.0 mm (0.00 in)
1893	0.0 mm (0.00 in)
1894	0.0 mm (0.00 in)
1895	0.0 mm (0.00 in)
1896	0.0 mm (0.00 in)
1897	0.0 mm (0.00 in)
1898	0.0 mm (0.00 in)
1899	0.0 mm (0.00 in)
1900	0.0 mm (0.00 in)
1901	0.0 mm (0.00 in)
1902	0.0 mm (0.00 in)
1903	0.0 mm (0.00 in)
1904	0.0 mm (0.00 in)
1905	0.0 mm (0.00 in)
1906	0.0 mm (0.00 in)
1907	0.0 mm (0.00 in)
1908	0.0 mm (0.00 in)
1909	0.0 mm (0.00 in)
1910	0.0 mm (0.00 in)
1911	0.0 mm (0.00 in)
1912	0.0 mm (0.00 in)
1913	53.3 mm (2.1 in)
1914	53.8 mm (2.1 in)
1915	50.8 mm (2.0 in)
1916	53.1 mm (2.1 in)
1917	82.8 mm (3.3 in)
1918	69.9 mm (2.8 in)
1919	69.9 mm (2.8 in)
1920	125.7 mm (4.9 in)
1921	62.7 mm (2.5 in)
1922	130.3 mm (5.1 in)
1923	64.8 mm (2.6 in)
1924	81.0 mm (3.2 in)
1925	50.0 mm (2.0 in)
1926	45.0 mm (1.8 in)
1927	38.9 mm (1.5 in)
1928	56.9 mm (2.2 in)
1929	51.3 mm (2.0 in)
1930	96.3 mm (3.8 in)
1931	41.4 mm (1.6 in)
1932	35.3 mm (1.4 in)
1933	52.1 mm (2.1 in)
1934	37.1 mm (1.5 in)
1935	29.0 mm (1.1 in)
1936	43.2 mm (1.7 in)
1937	91.9 mm (3.6 in)
1938	46.7 mm (1.8 in)
1939	33.3 mm (1.3 in)
1940	69.9 mm (2.8 in)
1941	65.3 mm (2.6 in)
1942	106.4 mm (4.2 in)
1943	36.3 mm (1.4 in)
1944	54.4 mm (2.1 in)
1945	55.6 mm (2.2 in)
1946	30.5 mm (1.2 in)
1947	82.3 mm (3.2 in)
1948	43.9 mm (1.7 in)
1949	96.5 mm (3.8 in)
1950	53.3 mm (2.1 in)
1951	47.2 mm (1.9 in)
1952	58.9 mm (2.3 in)
1953	88.4 mm (3.5 in)
1954	77.2 mm (3.0 in)
1955	111.3 mm (4.4 in)
1956	86.1 mm (3.4 in)
1957	34.3 mm (1.4 in)
1958	25.7 mm (1.0 in)
1959	134.4 mm (5.3 in)
1960	70.1 mm (2.8 in)
1961	142.2 mm (5.6 in)
1962	33.3 mm (1.3 in)
1963	80.3 mm (3.2 in)
1964	56.1 mm (2.2 in)
1965	110.0 mm (4.3 in)
1966	79.0 mm (3.1 in)
1967	38.6 mm (1.5 in)
1968	68.6 mm (2.7 in)
1969	54.1 mm (2.1 in)
1970	18.8 mm (0.7 in)
1971	122.2 mm (4.8 in)
1972	24.6 mm (1.0 in)
1973	61.0 mm (2.4 in)
1974	94.0 mm (3.7 in)

Wettest five days (Rx5day)

The wettest five days of the year at Portland Downs, 1887 to 1974. The record is 248.5 mm (9.8 in) in 1963, marked on the chart; the median year is 78.0 mm (3.1 in).

Wettest five days (Rx5day) at Portland Downs by year
Year	Wettest five days (Rx5day)
1887	0.0 mm (0.00 in)
1888	69.9 mm (2.8 in)
1889	0.0 mm (0.00 in)
1892	0.0 mm (0.00 in)
1893	0.0 mm (0.00 in)
1894	0.0 mm (0.00 in)
1895	0.0 mm (0.00 in)
1896	0.0 mm (0.00 in)
1897	0.0 mm (0.00 in)
1898	0.0 mm (0.00 in)
1899	0.0 mm (0.00 in)
1900	0.0 mm (0.00 in)
1901	0.0 mm (0.00 in)
1902	0.0 mm (0.00 in)
1903	0.0 mm (0.00 in)
1904	0.0 mm (0.00 in)
1905	0.0 mm (0.00 in)
1906	0.0 mm (0.00 in)
1907	0.0 mm (0.00 in)
1908	0.0 mm (0.00 in)
1909	0.0 mm (0.00 in)
1910	0.0 mm (0.00 in)
1911	0.0 mm (0.00 in)
1912	0.0 mm (0.00 in)
1913	92.9 mm (3.7 in)
1914	79.7 mm (3.1 in)
1915	63.8 mm (2.5 in)
1916	108.7 mm (4.3 in)
1917	113.8 mm (4.5 in)
1918	138.2 mm (5.4 in)
1919	86.2 mm (3.4 in)
1920	161.5 mm (6.4 in)
1921	77.9 mm (3.1 in)
1922	167.4 mm (6.6 in)
1923	98.6 mm (3.9 in)
1924	130.2 mm (5.1 in)
1925	104.3 mm (4.1 in)
1926	79.3 mm (3.1 in)
1927	62.8 mm (2.5 in)
1928	87.9 mm (3.5 in)
1929	78.0 mm (3.1 in)
1930	199.4 mm (7.9 in)
1931	116.8 mm (4.6 in)
1932	65.8 mm (2.6 in)
1933	103.6 mm (4.1 in)
1934	85.1 mm (3.4 in)
1935	48.8 mm (1.9 in)
1936	143.3 mm (5.6 in)
1937	142.4 mm (5.6 in)
1938	75.7 mm (3.0 in)
1939	86.1 mm (3.4 in)
1940	121.8 mm (4.8 in)
1941	146.8 mm (5.8 in)
1942	107.4 mm (4.2 in)
1943	62.7 mm (2.5 in)
1944	128.9 mm (5.1 in)
1945	76.4 mm (3.0 in)
1946	63.2 mm (2.5 in)
1947	109.7 mm (4.3 in)
1948	45.2 mm (1.8 in)
1949	112.5 mm (4.4 in)
1950	168.9 mm (6.6 in)
1951	77.0 mm (3.0 in)
1952	63.5 mm (2.5 in)
1953	134.8 mm (5.3 in)
1954	102.6 mm (4.0 in)
1955	181.7 mm (7.2 in)
1956	110.0 mm (4.3 in)
1957	45.1 mm (1.8 in)
1958	47.7 mm (1.9 in)
1959	149.1 mm (5.9 in)
1960	118.2 mm (4.7 in)
1961	197.1 mm (7.8 in)
1962	64.5 mm (2.5 in)
1963	248.5 mm (9.8 in)
1964	80.0 mm (3.1 in)
1965	148.1 mm (5.8 in)
1966	135.4 mm (5.3 in)
1967	49.5 mm (1.9 in)
1968	108.0 mm (4.3 in)
1969	56.9 mm (2.2 in)
1970	18.8 mm (0.7 in)
1971	154.5 mm (6.1 in)
1972	39.4 mm (1.6 in)
1973	92.5 mm (3.6 in)
1974	98.0 mm (3.9 in)

Longest dry spell (CDD)

The longest dry spell of the year at Portland Downs, 1887 to 1974. The record is 218 days in 1965, marked on the chart; the median year is 62 days.

Longest dry spell (CDD) at Portland Downs by year
Year	Longest dry spell (CDD)
1887	30 days
1888	86 days
1889	31 days
1892	31 days
1893	61 days
1894	31 days
1895	31 days
1896	31 days
1897	62 days
1898	30 days
1899	30 days
1900	31 days
1901	31 days
1902	61 days
1903	30 days
1904	31 days
1905	30 days
1906	31 days
1907	30 days
1908	30 days
1909	31 days
1910	30 days
1911	30 days
1912	92 days
1913	76 days
1914	73 days
1915	89 days
1916	75 days
1917	61 days
1918	80 days
1919	101 days
1920	72 days
1921	43 days
1922	108 days
1923	54 days
1924	72 days
1925	52 days
1926	62 days
1927	130 days
1928	108 days
1929	126 days
1930	47 days
1931	60 days
1932	140 days
1933	47 days
1934	73 days
1935	54 days
1936	36 days
1937	87 days
1938	92 days
1939	76 days
1940	102 days
1941	117 days
1942	55 days
1943	82 days
1944	64 days
1945	80 days
1946	160 days
1947	63 days
1948	95 days
1949	99 days
1950	43 days
1951	102 days
1952	129 days
1953	94 days
1954	48 days
1955	47 days
1956	61 days
1957	70 days
1958	58 days
1959	75 days
1960	52 days
1961	78 days
1962	53 days
1963	74 days
1964	42 days
1965	218 days
1966	98 days
1967	89 days
1968	76 days
1969	91 days
1970	129 days
1971	34 days
1972	160 days
1973	33 days
1974	24 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

59 years, 1888 to 1972

A day with at least 60.7 mm (2.4 in) of rain is expected about once in 2 years. A day with at least 167.1 mm (6.6 in) of rain is expected about once in 100 years.

Rainfall return levels at Portland Downs: the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	60.7 mm (2.4 in)
5 years	87.0 mm (3.4 in)
10 years	105.3 mm (4.1 in)
25 years	129.3 mm (5.1 in)
50 years	147.9 mm (5.8 in)
100 years	167.1 mm (6.6 in)	Longer than the 59 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, 59 years of values from 1888 to 1972.

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: 142.2 mm (5.6 in) in 1961; 134.4 mm (5.3 in) in 1959; 130.3 mm (5.1 in) in 1922.

Download the Data

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