Merbein Csiro Research Station Weather Records (ASN00076026)

Record envelope, standing records and threshold days for Merbein Csiro Research Station (ASN00076026), Australia, with 72 years of record.

Key Facts for Merbein Csiro Research Station

Merbein Csiro Research Station (ASN00076026) is a weather station in Australia at -34.21 latitude and 142.04 longitude, 56 m (185 ft) above sea level.
The station reports from 1920 to 1991, 72 years of record.
1,464 records set at Merbein Csiro Research Station still stand.
Records are tracked for prcp: an element needs 30 years of data to be eligible.
Merbein Csiro Research Station set a daily record precipitation of 24.0 mm (0.9 in) on 24 January 1991.

About the Station

Location: Australia, -34.21 latitude, 142.04 longitude.
Elevation: 56 m (185 ft).
Period of record: 1920 to 1991, 72 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 Merbein Csiro Research Station. 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 Merbein Csiro Research Station, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	45.2 C (113.4 F)	7.4 C (45.3 F)	n/a	n/a
Feb	43.4 C (110.1 F)	8.3 C (46.9 F)	n/a	n/a
Mar	40.4 C (104.7 F)	4.6 C (40.3 F)	n/a	n/a
Apr	36.1 C (97.0 F)	1.3 C (34.3 F)	n/a	n/a
May	29.9 C (85.8 F)	-0.8 C (30.6 F)	n/a	n/a
Jun	23.3 C (73.9 F)	-1.1 C (30.0 F)	n/a	n/a
Jul	26.7 C (80.1 F)	-2.1 C (28.2 F)	n/a	n/a
Aug	28.3 C (82.9 F)	-1.6 C (29.1 F)	n/a	n/a
Sep	35.6 C (96.1 F)	0.7 C (33.3 F)	n/a	n/a
Oct	39.0 C (102.2 F)	1.6 C (34.9 F)	n/a	n/a
Nov	40.4 C (104.7 F)	3.3 C (37.9 F)	n/a	n/a
Dec	42.8 C (109.0 F)	6.6 C (43.9 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Merbein Csiro Research Station still stand. 1965 holds the most, with 161.

All-Time Record Progression

1 new records

1 all-time records were set at Merbein Csiro Research Station between 24 March 1969 and 24 March 1969. Each dot is a new record.

Wettest Day of Each Month

Mar: 99.1 mm (3.9 in)

The wettest day on record for each calendar month at Merbein Csiro Research Station. The most was 99.1 mm (3.9 in) on 24 March 1969.

Record daily precipitation for each month at Merbein Csiro Research Station
Month	Record daily precipitation (mm)	Date
Jan	43.4 mm (1.7 in)	19 January 1937
Feb	64.8 mm (2.6 in)	5 February 1976
Mar	99.1 mm (3.9 in)	24 March 1969
Apr	53.3 mm (2.1 in)	17 April 1971
May	36.4 mm (1.4 in)	10 May 1989
Jun	37.3 mm (1.5 in)	13 June 1932
Jul	31.8 mm (1.3 in)	30 July 1923
Aug	47.0 mm (1.9 in)	27 August 1973
Sep	41.9 mm (1.6 in)	10 September 1964
Oct	37.2 mm (1.5 in)	3 October 1976
Nov	54.6 mm (2.1 in)	17 November 1961
Dec	46.0 mm (1.8 in)	27 December 1929

Period of Record Coverage

1965 to 1975

11 years of record at Merbein Csiro Research Station, 1965 to 1975. 1 years have data for under 90 percent of days and are left out of rankings: 1975.

Days with data per year at Merbein Csiro Research Station
Year	Days with data	Share of year	Complete
1965	365	100%	Yes
1966	365	100%	Yes
1967	365	100%	Yes
1968	366	100%	Yes
1969	365	100%	Yes
1970	365	100%	Yes
1971	365	100%	Yes
1972	366	100%	Yes
1973	365	100%	Yes
1974	365	100%	Yes
1975	301	82%	No

Latest Records

Latest records at Merbein Csiro Research Station
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
24 January 1991	Merbein Csiro Research Station, AU	daily rain	24.0 mm (0.9 in)	1.1 mm (0.04 in)	49 years	20 of 100 (Routine)
23 January 1991	Merbein Csiro Research Station, AU	daily rain	8.7 mm (0.34 in)	2.3 mm (0.09 in)	49 years	20 of 100 (Routine)
5 January 1991	Merbein Csiro Research Station, AU	daily rain	26.7 mm (1.1 in)	18.5 mm (0.7 in)	15 years	33 of 100 (Routine)
18 July 1990	Merbein Csiro Research Station, AU	daily rain	22.9 mm (0.9 in)	19.7 mm (0.8 in)	16 years	20 of 100 (Routine)
17 June 1990	Merbein Csiro Research Station, AU	daily rain	19.8 mm (0.8 in)	3.6 mm (0.14 in)	0 years	14 of 100 (Routine)
17 May 1990	Merbein Csiro Research Station, AU	daily rain	24.4 mm (1.0 in)	15.3 mm (0.6 in)	64 years	20 of 100 (Routine)
21 April 1990	Merbein Csiro Research Station, AU	daily rain	22.4 mm (0.9 in)	14.5 mm (0.6 in)	32 years	20 of 100 (Routine)
28 March 1990	Merbein Csiro Research Station, AU	daily rain	8.2 mm (0.32 in)	3.9 mm (0.15 in)	28 years	19 of 100 (Routine)
17 June 1989	Merbein Csiro Research Station, AU	daily rain	16.2 mm (0.6 in)	10.1 mm (0.4 in)	34 years	20 of 100 (Routine)
10 May 1989	Merbein Csiro Research Station, AU	monthly rain	36.4 mm (1.4 in)	1.6 mm (0.06 in)	62 years	38 of 100 (Notable)
6 April 1989	Merbein Csiro Research Station, AU	daily rain	38.0 mm (1.5 in)	33.0 mm (1.3 in)	15 years	51 of 100 (Notable)
14 March 1989	Merbein Csiro Research Station, AU	daily rain	38.8 mm (1.5 in)	35.2 mm (1.4 in)	60 years	62 of 100 (Major)
14 November 1988	Merbein Csiro Research Station, AU	daily rain	6.8 mm (0.27 in)	1.7 mm (0.07 in)	45 years	20 of 100 (Routine)
2 September 1988	Merbein Csiro Research Station, AU	daily rain	19.9 mm (0.8 in)	0.8 mm (0.03 in)	27 years	15 of 100 (Routine)
27 April 1988	Merbein Csiro Research Station, AU	daily rain	14.0 mm (0.6 in)	6.6 mm (0.26 in)	15 years	20 of 100 (Routine)
1 December 1987	Merbein Csiro Research Station, AU	daily rain	26.0 mm (1.0 in)	13.0 mm (0.5 in)	66 years	44 of 100 (Notable)
28 August 1987	Merbein Csiro Research Station, AU	daily rain	27.3 mm (1.1 in)	19.4 mm (0.8 in)	44 years	58 of 100 (Notable)
19 June 1987	Merbein Csiro Research Station, AU	daily rain	6.0 mm (0.24 in)	2.2 mm (0.09 in)	33 years	20 of 100 (Routine)
13 May 1987	Merbein Csiro Research Station, AU	daily rain	13.0 mm (0.5 in)	2.8 mm (0.11 in)	61 years	20 of 100 (Routine)
28 April 1987	Merbein Csiro Research Station, AU	daily rain	15.0 mm (0.6 in)	11.7 mm (0.5 in)	40 years	20 of 100 (Routine)

Climate Trend

10 complete years, 1965 to 1974

One stripe for each of 10 complete years at Merbein Csiro Research Station, 1965 to 1974. Blue stripes are years cooler than the station's own mean of 16.9 C (62.4 F); red stripes are warmer. The coolest year was 1966, at 16.4 C (61.4 F), and the warmest was 1973, at 17.2 C (63.0 F). The strongest colour marks a difference of 0.6 C (1.1 F).

Annual mean temperature at Merbein Csiro Research Station as warming stripes, 1965 to 1974
Year	Annual mean temperature	Difference from the station mean
1965	16.9 C	+0.06 C
1966	16.4 C	-0.51 C
1967	17.1 C	+0.23 C
1968	17.1 C	+0.26 C
1969	16.8 C	-0.12 C
1970	16.5 C	-0.38 C
1971	16.9 C	+0.01 C
1972	17.1 C	+0.24 C
1973	17.2 C	+0.33 C
1974	16.7 C	-0.15 C

This station does not have enough complete years (30 are needed) to fit a temperature trend.

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

1920 to 1991

Yearly extremes at Merbein Csiro Research Station: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	45.2 C (113.4 F)	1968	41.7 C (107.1 F)	11
Coldest night (TNn)	-2.1 C (28.2 F)	1968	-1.1 C (30.0 F)	11
Wettest day (Rx1day)	99.1 mm (3.9 in)	1969	29.9 mm (1.2 in)	72
Wettest five days (Rx5day)	101.4 mm (4.0 in)	1969	41.5 mm (1.6 in)	72
Longest dry spell (CDD)	83 days	1923	45 days	72

Hottest day (TXx)

The hottest day of the year at Merbein Csiro Research Station, 1920 to 1991. The record is 45.2 C (113.4 F) in 1968, marked on the chart; the median year is 41.7 C (107.1 F).

Hottest day (TXx) at Merbein Csiro Research Station by year
Year	Hottest day (TXx)
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	n/a
1961	n/a
1962	n/a
1963	n/a
1964	n/a
1965	43.0 C (109.4 F)
1966	41.1 C (106.0 F)
1967	41.2 C (106.2 F)
1968	45.2 C (113.4 F)
1969	41.7 C (107.1 F)
1970	41.5 C (106.7 F)
1971	41.7 C (107.1 F)
1972	42.5 C (108.5 F)
1973	42.3 C (108.1 F)
1974	37.3 C (99.1 F)
1975	40.0 C (104.0 F)
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

Coldest night (TNn)

The coldest night of the year at Merbein Csiro Research Station, 1920 to 1991. The record is -2.1 C (28.2 F) in 1968, marked on the chart; the median year is -1.1 C (30.0 F).

Coldest night (TNn) at Merbein Csiro Research Station by year
Year	Coldest night (TNn)
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	n/a
1961	n/a
1962	n/a
1963	n/a
1964	n/a
1965	-1.4 C (29.5 F)
1966	-2.0 C (28.4 F)
1967	-0.9 C (30.4 F)
1968	-2.1 C (28.2 F)
1969	-1.4 C (29.5 F)
1970	-0.2 C (31.6 F)
1971	-0.5 C (31.1 F)
1972	-1.1 C (30.0 F)
1973	-0.3 C (31.5 F)
1974	-1.3 C (29.7 F)
1975	-0.6 C (30.9 F)
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

Wettest day (Rx1day)

The wettest day of the year at Merbein Csiro Research Station, 1920 to 1991. The record is 99.1 mm (3.9 in) in 1969, marked on the chart; the median year is 29.9 mm (1.2 in).

Wettest day (Rx1day) at Merbein Csiro Research Station by year
Year	Wettest day (Rx1day)
1920	28.4 mm (1.1 in)
1921	50.3 mm (2.0 in)
1922	28.7 mm (1.1 in)
1923	32.5 mm (1.3 in)
1924	29.7 mm (1.2 in)
1925	13.2 mm (0.5 in)
1926	34.8 mm (1.4 in)
1927	16.5 mm (0.6 in)
1928	21.1 mm (0.8 in)
1929	46.0 mm (1.8 in)
1930	26.7 mm (1.1 in)
1931	40.6 mm (1.6 in)
1932	49.0 mm (1.9 in)
1933	40.9 mm (1.6 in)
1934	15.2 mm (0.6 in)
1935	11.9 mm (0.5 in)
1936	30.5 mm (1.2 in)
1937	43.4 mm (1.7 in)
1938	12.2 mm (0.5 in)
1939	61.5 mm (2.4 in)
1940	21.6 mm (0.9 in)
1941	34.5 mm (1.4 in)
1942	33.5 mm (1.3 in)
1943	19.1 mm (0.8 in)
1944	12.4 mm (0.5 in)
1945	18.0 mm (0.7 in)
1946	20.1 mm (0.8 in)
1947	28.7 mm (1.1 in)
1948	31.5 mm (1.2 in)
1949	33.8 mm (1.3 in)
1950	56.1 mm (2.2 in)
1951	16.3 mm (0.6 in)
1952	21.6 mm (0.9 in)
1953	30.0 mm (1.2 in)
1954	33.5 mm (1.3 in)
1955	27.4 mm (1.1 in)
1956	28.4 mm (1.1 in)
1957	38.1 mm (1.5 in)
1958	47.2 mm (1.9 in)
1959	38.1 mm (1.5 in)
1960	25.1 mm (1.0 in)
1961	54.6 mm (2.1 in)
1962	37.3 mm (1.5 in)
1963	27.4 mm (1.1 in)
1964	41.9 mm (1.6 in)
1965	26.9 mm (1.1 in)
1966	25.9 mm (1.0 in)
1967	20.3 mm (0.8 in)
1968	17.0 mm (0.7 in)
1969	99.1 mm (3.9 in)
1970	26.9 mm (1.1 in)
1971	53.3 mm (2.1 in)
1972	19.1 mm (0.8 in)
1973	47.0 mm (1.9 in)
1974	37.0 mm (1.5 in)
1975	32.4 mm (1.3 in)
1976	64.8 mm (2.6 in)
1977	64.4 mm (2.5 in)
1978	21.0 mm (0.8 in)
1979	39.0 mm (1.5 in)
1980	34.2 mm (1.3 in)
1981	21.5 mm (0.8 in)
1982	26.0 mm (1.0 in)
1983	42.9 mm (1.7 in)
1984	35.9 mm (1.4 in)
1985	26.2 mm (1.0 in)
1986	21.2 mm (0.8 in)
1987	27.3 mm (1.1 in)
1988	31.2 mm (1.2 in)
1989	38.8 mm (1.5 in)
1990	24.4 mm (1.0 in)
1991	26.7 mm (1.1 in)

Wettest five days (Rx5day)

The wettest five days of the year at Merbein Csiro Research Station, 1920 to 1991. The record is 101.4 mm (4.0 in) in 1969, marked on the chart; the median year is 41.5 mm (1.6 in).

Wettest five days (Rx5day) at Merbein Csiro Research Station by year
Year	Wettest five days (Rx5day)
1920	37.3 mm (1.5 in)
1921	92.2 mm (3.6 in)
1922	35.3 mm (1.4 in)
1923	56.2 mm (2.2 in)
1924	39.9 mm (1.6 in)
1925	21.4 mm (0.8 in)
1926	43.5 mm (1.7 in)
1927	16.5 mm (0.6 in)
1928	38.3 mm (1.5 in)
1929	47.5 mm (1.9 in)
1930	46.2 mm (1.8 in)
1931	40.6 mm (1.6 in)
1932	68.4 mm (2.7 in)
1933	44.2 mm (1.7 in)
1934	28.9 mm (1.1 in)
1935	14.0 mm (0.6 in)
1936	78.2 mm (3.1 in)
1937	50.5 mm (2.0 in)
1938	24.8 mm (1.0 in)
1939	80.3 mm (3.2 in)
1940	23.1 mm (0.9 in)
1941	70.5 mm (2.8 in)
1942	40.1 mm (1.6 in)
1943	20.4 mm (0.8 in)
1944	20.4 mm (0.8 in)
1945	40.6 mm (1.6 in)
1946	30.5 mm (1.2 in)
1947	45.5 mm (1.8 in)
1948	36.1 mm (1.4 in)
1949	57.7 mm (2.3 in)
1950	64.8 mm (2.6 in)
1951	33.3 mm (1.3 in)
1952	28.8 mm (1.1 in)
1953	61.0 mm (2.4 in)
1954	38.9 mm (1.5 in)
1955	38.7 mm (1.5 in)
1956	31.5 mm (1.2 in)
1957	55.8 mm (2.2 in)
1958	95.1 mm (3.7 in)
1959	38.9 mm (1.5 in)
1960	31.1 mm (1.2 in)
1961	85.1 mm (3.4 in)
1962	71.5 mm (2.8 in)
1963	43.6 mm (1.7 in)
1964	57.9 mm (2.3 in)
1965	34.3 mm (1.4 in)
1966	37.3 mm (1.5 in)
1967	23.7 mm (0.9 in)
1968	27.9 mm (1.1 in)
1969	101.4 mm (4.0 in)
1970	39.9 mm (1.6 in)
1971	77.3 mm (3.0 in)
1972	35.5 mm (1.4 in)
1973	66.8 mm (2.6 in)
1974	52.2 mm (2.1 in)
1975	57.6 mm (2.3 in)
1976	72.8 mm (2.9 in)
1977	100.4 mm (4.0 in)
1978	34.8 mm (1.4 in)
1979	65.8 mm (2.6 in)
1980	92.5 mm (3.6 in)
1981	30.5 mm (1.2 in)
1982	29.2 mm (1.1 in)
1983	54.2 mm (2.1 in)
1984	71.5 mm (2.8 in)
1985	43.6 mm (1.7 in)
1986	36.1 mm (1.4 in)
1987	56.9 mm (2.2 in)
1988	42.4 mm (1.7 in)
1989	54.6 mm (2.1 in)
1990	27.2 mm (1.1 in)
1991	36.8 mm (1.4 in)

Longest dry spell (CDD)

The longest dry spell of the year at Merbein Csiro Research Station, 1920 to 1991. The record is 83 days in 1923, marked on the chart; the median year is 45 days.

Longest dry spell (CDD) at Merbein Csiro Research Station by year
Year	Longest dry spell (CDD)
1920	16 days
1921	48 days
1922	44 days
1923	83 days
1924	47 days
1925	54 days
1926	72 days
1927	46 days
1928	49 days
1929	35 days
1930	49 days
1931	64 days
1932	37 days
1933	39 days
1934	50 days
1935	34 days
1936	52 days
1937	49 days
1938	59 days
1939	55 days
1940	66 days
1941	34 days
1942	49 days
1943	48 days
1944	56 days
1945	56 days
1946	32 days
1947	62 days
1948	73 days
1949	30 days
1950	32 days
1951	42 days
1952	30 days
1953	56 days
1954	39 days
1955	28 days
1956	40 days
1957	39 days
1958	51 days
1959	48 days
1960	27 days
1961	25 days
1962	61 days
1963	36 days
1964	31 days
1965	70 days
1966	36 days
1967	66 days
1968	29 days
1969	27 days
1970	45 days
1971	39 days
1972	53 days
1973	25 days
1974	34 days
1975	39 days
1976	40 days
1977	47 days
1978	41 days
1979	41 days
1980	66 days
1981	38 days
1982	46 days
1983	33 days
1984	62 days
1985	44 days
1986	56 days
1987	57 days
1988	33 days
1989	33 days
1990	35 days
1991	66 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

70 years, 1921 to 1990

A day with at least 30.1 mm (1.2 in) of rain is expected about once in 2 years. A day with at least 82.4 mm (3.2 in) of rain is expected about once in 100 years.

Rainfall return levels at Merbein Csiro Research Station: the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	30.1 mm (1.2 in)
5 years	43.0 mm (1.7 in)
10 years	52.0 mm (2.0 in)
25 years	63.8 mm (2.5 in)
50 years	73.0 mm (2.9 in)
100 years	82.4 mm (3.2 in)	Longer than the 70 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, 70 years of values from 1921 to 1990.

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: 99.1 mm (3.9 in) in 1969; 64.8 mm (2.6 in) in 1976; 64.4 mm (2.5 in) in 1977.

Download the Data

Data for Merbein Csiro Research Station standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Merbein Csiro Research Station 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).