Merrigum Weather Records (ASN00081031)

Record envelope, standing records and threshold days for Merrigum (ASN00081031), Australia, with 90 years of record.

Key Facts for Merrigum

Merrigum (ASN00081031) is a weather station in Australia at -36.37 latitude and 145.13 longitude, n/a above sea level.
The station reports from 1887 to 1976, 90 years of record.
0 records set at Merrigum still stand.
Records are tracked for prcp: an element needs 30 years of data to be eligible.
Merrigum set a daily record precipitation of 13.0 mm (0.5 in) on 24 December 1976.

About the Station

Location: Australia, -36.37 latitude, 145.13 longitude.
Elevation: n/a.
Period of record: 1887 to 1976, 90 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 Merrigum. 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 Merrigum, 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 Merrigum still stand.

All-Time Record Progression

1 new records

1 all-time records were set at Merrigum between 19 March 1950 and 19 March 1950. Each dot is a new record.

Wettest Day of Each Month

Mar: 87.4 mm (3.4 in)

The wettest day on record for each calendar month at Merrigum. The most was 87.4 mm (3.4 in) on 19 March 1950.

Record daily precipitation for each month at Merrigum
Month	Record daily precipitation (mm)	Date
Jan	85.1 mm (3.4 in)	4 January 1941
Feb	59.9 mm (2.4 in)	11 February 1955
Mar	87.4 mm (3.4 in)	19 March 1950
Apr	83.3 mm (3.3 in)	8 April 1939
May	59.4 mm (2.3 in)	15 May 1974
Jun	35.8 mm (1.4 in)	1 June 1889
Jul	59.9 mm (2.4 in)	12 July 1933
Aug	42.2 mm (1.7 in)	15 August 1958
Sep	37.1 mm (1.5 in)	4 September 1947
Oct	57.0 mm (2.2 in)	24 October 1975
Nov	67.6 mm (2.7 in)	8 November 1971
Dec	66.0 mm (2.6 in)	4 December 1954

Latest Records

Latest records at Merrigum
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
24 December 1976	Merrigum, AU	daily rain	13.0 mm (0.5 in)	0.3 mm (0.01 in)	88 years	20 of 100 (Routine)
3 November 1976	Merrigum, AU	daily rain	16.4 mm (0.6 in)	1.4 mm (0.06 in)	4 years	11 of 100 (Routine)
21 September 1976	Merrigum, AU	daily rain	28.0 mm (1.1 in)	5.6 mm (0.22 in)	36 years	28 of 100 (Routine)
13 August 1976	Merrigum, AU	daily rain	7.4 mm (0.29 in)	1.0 mm (0.04 in)	34 years	20 of 100 (Routine)
13 December 1975	Merrigum, AU	daily rain	22.0 mm (0.9 in)	2.7 mm (0.11 in)	8 years	12 of 100 (Routine)
24 October 1975	Merrigum, AU	monthly rain	57.0 mm (2.2 in)	11.0 mm (0.4 in)	73 years	54 of 100 (Notable)
8 October 1975	Merrigum, AU	daily rain	32.0 mm (1.3 in)	20.3 mm (0.8 in)	10 years	39 of 100 (Notable)
11 August 1975	Merrigum, AU	daily rain	19.2 mm (0.8 in)	9.0 mm (0.35 in)	83 years	20 of 100 (Routine)
3 August 1975	Merrigum, AU	daily rain	29.0 mm (1.1 in)	15.3 mm (0.6 in)	38 years	49 of 100 (Notable)
5 October 1974	Merrigum, AU	daily rain	26.0 mm (1.0 in)	3.1 mm (0.12 in)	17 years	17 of 100 (Routine)
20 September 1974	Merrigum, AU	daily rain	13.6 mm (0.5 in)	6.0 mm (0.24 in)	82 years	20 of 100 (Routine)
16 May 1974	Merrigum, AU	daily rain	39.4 mm (1.6 in)	16.5 mm (0.6 in)	35 years	45 of 100 (Notable)
15 May 1974	Merrigum, AU	monthly rain	59.4 mm (2.3 in)	23.6 mm (0.9 in)	6 years	59 of 100 (Notable)
14 May 1974	Merrigum, AU	daily rain	26.4 mm (1.0 in)	5.3 mm (0.21 in)	43 years	28 of 100 (Routine)
30 April 1974	Merrigum, AU	daily rain	14.2 mm (0.6 in)	0.5 mm (0.02 in)	11 years	11 of 100 (Routine)
28 April 1974	Merrigum, AU	daily rain	27.6 mm (1.1 in)	17.4 mm (0.7 in)	4 years	27 of 100 (Routine)
7 April 1974	Merrigum, AU	daily rain	23.0 mm (0.9 in)	7.8 mm (0.31 in)	84 years	20 of 100 (Routine)
10 March 1974	Merrigum, AU	daily rain	32.6 mm (1.3 in)	9.2 mm (0.36 in)	3 years	15 of 100 (Routine)
2 February 1974	Merrigum, AU	daily rain	31.0 mm (1.2 in)	25.4 mm (1.0 in)	24 years	35 of 100 (Notable)
17 January 1974	Merrigum, AU	daily rain	45.0 mm (1.8 in)	14.3 mm (0.6 in)	12 years	22 of 100 (Routine)

Extremes by Year

1887 to 1976

Yearly extremes at Merrigum: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Wettest day (Rx1day)	87.4 mm (3.4 in)	1950	36.5 mm (1.4 in)	66
Wettest five days (Rx5day)	198.8 mm (7.8 in)	1955	59.8 mm (2.4 in)	66
Longest dry spell (CDD)	73 days	1952	38 days	66

Wettest day (Rx1day)

The wettest day of the year at Merrigum, 1887 to 1976. The record is 87.4 mm (3.4 in) in 1950, marked on the chart; the median year is 36.5 mm (1.4 in).

Wettest day (Rx1day) at Merrigum by year
Year	Wettest day (Rx1day)
1887	62.2 mm (2.4 in)
1888	19.1 mm (0.8 in)
1889	45.7 mm (1.8 in)
1890	31.2 mm (1.2 in)
1891	38.9 mm (1.5 in)
1892	30.2 mm (1.2 in)
1893	34.0 mm (1.3 in)
1894	17.0 mm (0.7 in)
1902	46.0 mm (1.8 in)
1903	57.7 mm (2.3 in)
1904	33.5 mm (1.3 in)
1905	39.9 mm (1.6 in)
1906	23.9 mm (0.9 in)
1924	30.5 mm (1.2 in)
1925	21.6 mm (0.9 in)
1926	40.9 mm (1.6 in)
1927	16.0 mm (0.6 in)
1928	53.8 mm (2.1 in)
1929	45.2 mm (1.8 in)
1930	53.8 mm (2.1 in)
1931	31.2 mm (1.2 in)
1932	31.2 mm (1.2 in)
1933	59.9 mm (2.4 in)
1934	46.5 mm (1.8 in)
1935	33.3 mm (1.3 in)
1936	41.1 mm (1.6 in)
1937	24.6 mm (1.0 in)
1938	25.9 mm (1.0 in)
1939	83.3 mm (3.3 in)
1940	22.6 mm (0.9 in)
1941	85.1 mm (3.4 in)
1942	23.1 mm (0.9 in)
1943	50.3 mm (2.0 in)
1944	21.6 mm (0.9 in)
1945	25.4 mm (1.0 in)
1946	48.0 mm (1.9 in)
1947	37.1 mm (1.5 in)
1948	39.4 mm (1.6 in)
1949	39.1 mm (1.5 in)
1950	87.4 mm (3.4 in)
1951	48.3 mm (1.9 in)
1952	34.3 mm (1.4 in)
1953	45.7 mm (1.8 in)
1954	78.2 mm (3.1 in)
1955	59.9 mm (2.4 in)
1956	52.6 mm (2.1 in)
1957	27.4 mm (1.1 in)
1958	42.2 mm (1.7 in)
1959	23.4 mm (0.9 in)
1960	33.8 mm (1.3 in)
1961	29.5 mm (1.2 in)
1962	33.0 mm (1.3 in)
1963	31.0 mm (1.2 in)
1964	28.7 mm (1.1 in)
1965	25.4 mm (1.0 in)
1966	25.4 mm (1.0 in)
1967	35.8 mm (1.4 in)
1968	46.2 mm (1.8 in)
1969	33.5 mm (1.3 in)
1970	30.5 mm (1.2 in)
1971	67.6 mm (2.7 in)
1972	41.1 mm (1.6 in)
1973	41.9 mm (1.6 in)
1974	59.4 mm (2.3 in)
1975	57.0 mm (2.2 in)
1976	31.4 mm (1.2 in)

Wettest five days (Rx5day)

The wettest five days of the year at Merrigum, 1887 to 1976. The record is 198.8 mm (7.8 in) in 1955, marked on the chart; the median year is 59.8 mm (2.4 in).

Wettest five days (Rx5day) at Merrigum by year
Year	Wettest five days (Rx5day)
1887	106.2 mm (4.2 in)
1888	30.8 mm (1.2 in)
1889	54.1 mm (2.1 in)
1890	43.4 mm (1.7 in)
1891	59.9 mm (2.4 in)
1892	42.1 mm (1.7 in)
1893	69.1 mm (2.7 in)
1894	27.7 mm (1.1 in)
1902	71.1 mm (2.8 in)
1903	96.8 mm (3.8 in)
1904	96.8 mm (3.8 in)
1905	61.2 mm (2.4 in)
1906	55.7 mm (2.2 in)
1924	78.0 mm (3.1 in)
1925	33.0 mm (1.3 in)
1926	68.1 mm (2.7 in)
1927	27.0 mm (1.1 in)
1928	95.5 mm (3.8 in)
1929	84.6 mm (3.3 in)
1930	63.8 mm (2.5 in)
1931	39.9 mm (1.6 in)
1932	37.9 mm (1.5 in)
1933	68.8 mm (2.7 in)
1934	71.9 mm (2.8 in)
1935	49.4 mm (1.9 in)
1936	59.6 mm (2.3 in)
1937	33.0 mm (1.3 in)
1938	36.6 mm (1.4 in)
1939	113.5 mm (4.5 in)
1940	29.0 mm (1.1 in)
1941	85.1 mm (3.4 in)
1942	34.0 mm (1.3 in)
1943	53.1 mm (2.1 in)
1944	27.2 mm (1.1 in)
1945	58.4 mm (2.3 in)
1946	82.3 mm (3.2 in)
1947	46.6 mm (1.8 in)
1948	72.0 mm (2.8 in)
1949	77.7 mm (3.1 in)
1950	177.9 mm (7.0 in)
1951	63.8 mm (2.5 in)
1952	51.3 mm (2.0 in)
1953	47.8 mm (1.9 in)
1954	150.8 mm (5.9 in)
1955	198.8 mm (7.8 in)
1956	95.1 mm (3.7 in)
1957	51.1 mm (2.0 in)
1958	73.1 mm (2.9 in)
1959	38.3 mm (1.5 in)
1960	65.3 mm (2.6 in)
1961	34.5 mm (1.4 in)
1962	47.3 mm (1.9 in)
1963	75.7 mm (3.0 in)
1964	49.0 mm (1.9 in)
1965	51.3 mm (2.0 in)
1966	35.6 mm (1.4 in)
1967	56.7 mm (2.2 in)
1968	66.5 mm (2.6 in)
1969	50.8 mm (2.0 in)
1970	52.6 mm (2.1 in)
1971	86.4 mm (3.4 in)
1972	90.4 mm (3.6 in)
1973	88.1 mm (3.5 in)
1974	125.2 mm (4.9 in)
1975	77.4 mm (3.0 in)
1976	44.6 mm (1.8 in)

Longest dry spell (CDD)

The longest dry spell of the year at Merrigum, 1887 to 1976. The record is 73 days in 1952, marked on the chart; the median year is 38 days.

Longest dry spell (CDD) at Merrigum by year
Year	Longest dry spell (CDD)
1887	16 days
1888	41 days
1889	53 days
1890	44 days
1891	51 days
1892	45 days
1893	55 days
1894	28 days
1902	24 days
1903	25 days
1904	40 days
1905	60 days
1906	58 days
1924	12 days
1925	32 days
1926	71 days
1927	35 days
1928	40 days
1929	42 days
1930	51 days
1931	39 days
1932	34 days
1933	39 days
1934	45 days
1935	33 days
1936	45 days
1937	52 days
1938	70 days
1939	25 days
1940	61 days
1941	27 days
1942	24 days
1943	47 days
1944	47 days
1945	36 days
1946	25 days
1947	23 days
1948	54 days
1949	40 days
1950	38 days
1951	40 days
1952	73 days
1953	31 days
1954	34 days
1955	28 days
1956	23 days
1957	41 days
1958	27 days
1959	25 days
1960	28 days
1961	38 days
1962	35 days
1963	33 days
1964	37 days
1965	70 days
1966	26 days
1967	59 days
1968	59 days
1969	20 days
1970	34 days
1971	28 days
1972	31 days
1973	17 days
1974	22 days
1975	34 days
1976	40 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

61 years, 1887 to 1976

A day with at least 37.7 mm (1.5 in) of rain is expected about once in 2 years. A day with at least 99.3 mm (3.9 in) of rain is expected about once in 100 years.

Rainfall return levels at Merrigum: the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	37.7 mm (1.5 in)
5 years	52.5 mm (2.1 in)
10 years	62.9 mm (2.5 in)
25 years	76.9 mm (3.0 in)
50 years	87.8 mm (3.5 in)
100 years	99.3 mm (3.9 in)	Longer than the 61 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, 61 years of values from 1887 to 1976.

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: 87.4 mm (3.4 in) in 1950; 85.1 mm (3.4 in) in 1941; 83.3 mm (3.3 in) in 1939.

Download the Data

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