Risdon Weather Records (ASN00094056)

Record envelope, standing records and threshold days for Risdon (ASN00094056), Australia, with 56 years of record.

Key Facts for Risdon

Risdon (ASN00094056) is a weather station in Australia at -42.83 latitude and 147.32 longitude, 32 m (104 ft) above sea level.
The station reports from 1923 to 1978, 56 years of record.
1,464 records set at Risdon still stand.
Records are tracked for prcp: an element needs 30 years of data to be eligible.
Risdon set a daily record precipitation of 29.0 mm (1.1 in) on 8 August 1978.

About the Station

Location: Australia, -42.83 latitude, 147.32 longitude.
Elevation: 32 m (104 ft).
Period of record: 1923 to 1978, 56 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 Risdon. 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 Risdon, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	40.2 C (104.4 F)	-1.1 C (30.0 F)	n/a	n/a
Feb	37.5 C (99.5 F)	5.6 C (42.1 F)	n/a	n/a
Mar	35.3 C (95.5 F)	2.8 C (37.0 F)	n/a	n/a
Apr	30.6 C (87.1 F)	-1.1 C (30.0 F)	n/a	n/a
May	24.7 C (76.5 F)	-0.6 C (30.9 F)	n/a	n/a
Jun	20.3 C (68.5 F)	-1.1 C (30.0 F)	n/a	n/a
Jul	20.0 C (68.0 F)	-2.0 C (28.4 F)	n/a	n/a
Aug	24.0 C (75.2 F)	-0.8 C (30.6 F)	n/a	n/a
Sep	28.0 C (82.4 F)	-0.6 C (30.9 F)	n/a	n/a
Oct	30.6 C (87.1 F)	-1.7 C (28.9 F)	n/a	n/a
Nov	35.3 C (95.5 F)	1.7 C (35.1 F)	n/a	n/a
Dec	36.7 C (98.1 F)	0.0 C (32.0 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Risdon still stand. 1958 holds the most, with 92.

Standing records at Risdon by the year they were set
Year set	Standing records
1957	87
1958	92
1959	84
1960	79
1961	77
1962	69
1963	91
1964	68
1965	77
1966	75
1967	70
1968	53
1969	74
1970	28
1971	35
1972	65
1973	69
1974	43
1975	78
1976	60
1977	47
1978	43

All-Time Record Progression

1 new records

1 all-time records were set at Risdon between 7 June 1954 and 7 June 1954. Each dot is a new record.

Wettest Day of Each Month

Jun: 119.4 mm (4.7 in)

The wettest day on record for each calendar month at Risdon. The most was 119.4 mm (4.7 in) on 7 June 1954.

Record daily precipitation for each month at Risdon
Month	Record daily precipitation (mm)	Date
Jan	54.9 mm (2.2 in)	25 January 1928
Feb	58.4 mm (2.3 in)	1 February 1954
Mar	68.6 mm (2.7 in)	16 March 1938
Apr	118.6 mm (4.7 in)	23 April 1960
May	52.3 mm (2.1 in)	3 May 1973
Jun	119.4 mm (4.7 in)	7 June 1954
Jul	69.9 mm (2.8 in)	11 July 1967
Aug	63.0 mm (2.5 in)	17 August 1958
Sep	75.7 mm (3.0 in)	15 September 1957
Oct	55.9 mm (2.2 in)	20 October 1966
Nov	69.1 mm (2.7 in)	21 November 1954
Dec	65.0 mm (2.6 in)	5 December 1941

Period of Record Coverage

1957 to 1978

22 years of record at Risdon, 1957 to 1978. 5 years have data for under 90 percent of days and are left out of rankings: 1970, 1971, 1972, 1973, 1978.

Days with data per year at Risdon
Year	Days with data	Share of year	Complete
1957	362	99%	Yes
1958	364	100%	Yes
1959	362	99%	Yes
1960	366	100%	Yes
1961	364	100%	Yes
1962	360	99%	Yes
1963	365	100%	Yes
1964	364	99%	Yes
1965	364	100%	Yes
1966	362	99%	Yes
1967	365	100%	Yes
1968	361	99%	Yes
1969	363	99%	Yes
1970	208	57%	No
1971	325	89%	No
1972	273	75%	No
1973	317	87%	No
1974	361	99%	Yes
1975	365	100%	Yes
1976	364	99%	Yes
1977	365	100%	Yes
1978	273	75%	No

Latest Records

Latest records at Risdon
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
8 August 1978	Risdon, AU	daily rain	29.0 mm (1.1 in)	5.9 mm (0.23 in)	45 years	28 of 100 (Routine)
8 February 1978	Risdon, AU	daily rain	26.0 mm (1.0 in)	6.9 mm (0.27 in)	43 years	25 of 100 (Routine)
26 December 1977	Risdon, AU	daily rain	22.0 mm (0.9 in)	0.9 mm (0.04 in)	3 years	6 of 100 (Routine)
30 November 1977	Risdon, AU	daily rain	32.6 mm (1.3 in)	5.9 mm (0.23 in)	43 years	26 of 100 (Routine)
29 November 1977	Risdon, AU	daily rain	9.0 mm (0.35 in)	2.4 mm (0.09 in)	8 years	10 of 100 (Routine)
29 July 1977	Risdon, AU	daily rain	7.6 mm (0.30 in)	0.2 mm (0.01 in)	30 years	14 of 100 (Routine)
27 March 1977	Risdon, AU	daily rain	52.0 mm (2.0 in)	34.0 mm (1.3 in)	35 years	55 of 100 (Notable)
6 October 1976	Risdon, AU	daily rain	19.4 mm (0.8 in)	7.7 mm (0.30 in)	28 years	20 of 100 (Routine)
7 August 1976	Risdon, AU	daily rain	21.4 mm (0.8 in)	6.2 mm (0.24 in)	44 years	20 of 100 (Routine)
6 August 1976	Risdon, AU	daily rain	25.4 mm (1.0 in)	13.2 mm (0.5 in)	6 years	32 of 100 (Routine)
4 August 1976	Risdon, AU	daily rain	12.4 mm (0.5 in)	2.2 mm (0.09 in)	2 years	9 of 100 (Routine)
3 August 1976	Risdon, AU	daily rain	47.0 mm (1.9 in)	26.9 mm (1.1 in)	8 years	47 of 100 (Notable)
2 August 1976	Risdon, AU	daily rain	51.2 mm (2.0 in)	38.8 mm (1.5 in)	26 years	52 of 100 (Notable)
28 June 1976	Risdon, AU	daily rain	16.0 mm (0.6 in)	10.4 mm (0.4 in)	38 years	20 of 100 (Routine)
18 May 1976	Risdon, AU	daily rain	17.0 mm (0.7 in)	1.5 mm (0.06 in)	36 years	17 of 100 (Routine)
29 March 1976	Risdon, AU	daily rain	12.8 mm (0.5 in)	0.6 mm (0.02 in)	52 years	20 of 100 (Routine)
26 January 1976	Risdon, AU	daily rain	33.4 mm (1.3 in)	19.4 mm (0.8 in)	38 years	43 of 100 (Notable)
24 November 1975	Risdon, AU	daily rain	26.2 mm (1.0 in)	18.6 mm (0.7 in)	9 years	37 of 100 (Notable)
26 October 1975	Risdon, AU	daily rain	12.6 mm (0.5 in)	0.2 mm (0.01 in)	30 years	14 of 100 (Routine)
25 October 1975	Risdon, AU	daily rain	37.4 mm (1.5 in)	23.9 mm (0.9 in)	25 years	49 of 100 (Notable)

Climate Trend

15 complete years, 1957 to 1977

One stripe for each of 15 complete years at Risdon, 1957 to 1977. Blue stripes are years cooler than the station's own mean of 12.6 C (54.7 F); red stripes are warmer. The coolest year was 1964, at 12.1 C (53.7 F), and the warmest was 1961, at 13.3 C (55.9 F). The strongest colour marks a difference of 0.7 C (1.3 F).

Annual mean temperature at Risdon as warming stripes, 1957 to 1977
Year	Annual mean temperature	Difference from the station mean
1957	12.3 C	-0.34 C
1958	12.3 C	-0.38 C
1959	12.9 C	+0.28 C
1960	12.6 C	+0.00 C
1961	13.3 C	+0.63 C
1962	12.9 C	+0.30 C
1963	12.6 C	-0.07 C
1964	12.1 C	-0.57 C
1965	12.4 C	-0.27 C
1966	12.4 C	-0.26 C
1967	12.5 C	-0.12 C
1968	12.4 C	-0.24 C
1969	12.5 C	-0.12 C
1975	13.1 C	+0.50 C
1977	13.3 C	+0.61 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

1923 to 1978

Yearly extremes at Risdon: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	40.2 C (104.4 F)	1973	35.5 C (95.9 F)	22
Coldest night (TNn)	-2.0 C (28.4 F)	1975	-0.6 C (30.9 F)	22
Wettest day (Rx1day)	119.4 mm (4.7 in)	1954	42.8 mm (1.7 in)	56
Wettest five days (Rx5day)	192.0 mm (7.6 in)	1960	69.3 mm (2.7 in)	56
Longest dry spell (CDD)	35 days	1923	19 days	56

Hottest day (TXx)

The hottest day of the year at Risdon, 1923 to 1978. The record is 40.2 C (104.4 F) in 1973, marked on the chart; the median year is 35.5 C (95.9 F).

Hottest day (TXx) at Risdon by year
Year	Hottest day (TXx)
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	36.9 C (98.4 F)
1958	32.5 C (90.5 F)
1959	39.7 C (103.5 F)
1960	38.6 C (101.5 F)
1961	35.0 C (95.0 F)
1962	36.7 C (98.1 F)
1963	34.4 C (93.9 F)
1964	32.2 C (90.0 F)
1965	36.1 C (97.0 F)
1966	35.3 C (95.5 F)
1967	37.5 C (99.5 F)
1968	35.3 C (95.5 F)
1969	35.3 C (95.5 F)
1970	30.6 C (87.1 F)
1971	35.0 C (95.0 F)
1972	35.5 C (95.9 F)
1973	40.2 C (104.4 F)
1974	35.5 C (95.9 F)
1975	36.5 C (97.7 F)
1976	38.0 C (100.4 F)
1977	37.5 C (99.5 F)
1978	32.5 C (90.5 F)

Coldest night (TNn)

The coldest night of the year at Risdon, 1923 to 1978. The record is -2.0 C (28.4 F) in 1975, marked on the chart; the median year is -0.6 C (30.9 F).

Coldest night (TNn) at Risdon by year
Year	Coldest night (TNn)
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	-1.1 C (30.0 F)
1958	-1.1 C (30.0 F)
1959	-1.1 C (30.0 F)
1960	-0.8 C (30.6 F)
1961	-1.1 C (30.0 F)
1962	-1.7 C (28.9 F)
1963	-0.6 C (30.9 F)
1964	-0.6 C (30.9 F)
1965	-0.6 C (30.9 F)
1966	-0.8 C (30.6 F)
1967	-0.3 C (31.5 F)
1968	-1.1 C (30.0 F)
1969	0.0 C (32.0 F)
1970	0.0 C (32.0 F)
1971	8.9 C (48.0 F)
1972	4.5 C (40.1 F)
1973	-1.0 C (30.2 F)
1974	-0.5 C (31.1 F)
1975	-2.0 C (28.4 F)
1976	0.5 C (32.9 F)
1977	1.0 C (33.8 F)
1978	0.0 C (32.0 F)

Wettest day (Rx1day)

The wettest day of the year at Risdon, 1923 to 1978. The record is 119.4 mm (4.7 in) in 1954, marked on the chart; the median year is 42.8 mm (1.7 in).

Wettest day (Rx1day) at Risdon by year
Year	Wettest day (Rx1day)
1923	52.1 mm (2.1 in)
1924	33.5 mm (1.3 in)
1925	22.1 mm (0.9 in)
1926	53.8 mm (2.1 in)
1927	24.9 mm (1.0 in)
1928	54.9 mm (2.2 in)
1929	52.6 mm (2.1 in)
1930	27.9 mm (1.1 in)
1931	31.0 mm (1.2 in)
1932	68.1 mm (2.7 in)
1933	51.3 mm (2.0 in)
1934	33.8 mm (1.3 in)
1935	37.6 mm (1.5 in)
1936	41.1 mm (1.6 in)
1937	18.3 mm (0.7 in)
1938	68.6 mm (2.7 in)
1939	44.5 mm (1.8 in)
1940	17.8 mm (0.7 in)
1941	65.0 mm (2.6 in)
1942	30.0 mm (1.2 in)
1943	42.4 mm (1.7 in)
1944	43.2 mm (1.7 in)
1945	35.3 mm (1.4 in)
1946	67.3 mm (2.6 in)
1947	49.5 mm (1.9 in)
1948	21.8 mm (0.9 in)
1949	35.1 mm (1.4 in)
1950	31.0 mm (1.2 in)
1951	66.8 mm (2.6 in)
1952	30.5 mm (1.2 in)
1953	54.6 mm (2.1 in)
1954	119.4 mm (4.7 in)
1955	24.9 mm (1.0 in)
1956	54.4 mm (2.1 in)
1957	75.7 mm (3.0 in)
1958	63.0 mm (2.5 in)
1959	28.4 mm (1.1 in)
1960	118.6 mm (4.7 in)
1961	25.1 mm (1.0 in)
1962	26.2 mm (1.0 in)
1963	19.8 mm (0.8 in)
1964	37.6 mm (1.5 in)
1965	29.2 mm (1.1 in)
1966	55.9 mm (2.2 in)
1967	69.9 mm (2.8 in)
1968	30.5 mm (1.2 in)
1969	53.6 mm (2.1 in)
1970	58.4 mm (2.3 in)
1971	48.3 mm (1.9 in)
1972	29.2 mm (1.1 in)
1973	52.3 mm (2.1 in)
1974	36.2 mm (1.4 in)
1975	54.6 mm (2.1 in)
1976	51.2 mm (2.0 in)
1977	52.0 mm (2.0 in)
1978	29.0 mm (1.1 in)

Wettest five days (Rx5day)

The wettest five days of the year at Risdon, 1923 to 1978. The record is 192.0 mm (7.6 in) in 1960, marked on the chart; the median year is 69.3 mm (2.7 in).

Wettest five days (Rx5day) at Risdon by year
Year	Wettest five days (Rx5day)
1923	64.8 mm (2.6 in)
1924	53.2 mm (2.1 in)
1925	43.3 mm (1.7 in)
1926	92.2 mm (3.6 in)
1927	31.8 mm (1.3 in)
1928	69.2 mm (2.7 in)
1929	73.2 mm (2.9 in)
1930	35.4 mm (1.4 in)
1931	51.4 mm (2.0 in)
1932	94.3 mm (3.7 in)
1933	64.5 mm (2.5 in)
1934	56.8 mm (2.2 in)
1935	98.2 mm (3.9 in)
1936	53.3 mm (2.1 in)
1937	45.7 mm (1.8 in)
1938	104.7 mm (4.1 in)
1939	85.6 mm (3.4 in)
1940	33.5 mm (1.3 in)
1941	109.0 mm (4.3 in)
1942	42.2 mm (1.7 in)
1943	56.4 mm (2.2 in)
1944	93.5 mm (3.7 in)
1945	42.9 mm (1.7 in)
1946	80.5 mm (3.2 in)
1947	72.4 mm (2.9 in)
1948	37.6 mm (1.5 in)
1949	65.1 mm (2.6 in)
1950	44.6 mm (1.8 in)
1951	83.3 mm (3.3 in)
1952	70.9 mm (2.8 in)
1953	100.1 mm (3.9 in)
1954	175.8 mm (6.9 in)
1955	41.9 mm (1.6 in)
1956	127.8 mm (5.0 in)
1957	101.6 mm (4.0 in)
1958	125.3 mm (4.9 in)
1959	50.0 mm (2.0 in)
1960	192.0 mm (7.6 in)
1961	35.2 mm (1.4 in)
1962	40.2 mm (1.6 in)
1963	36.8 mm (1.4 in)
1964	69.4 mm (2.7 in)
1965	64.0 mm (2.5 in)
1966	100.1 mm (3.9 in)
1967	99.8 mm (3.9 in)
1968	42.5 mm (1.7 in)
1969	81.1 mm (3.2 in)
1970	85.6 mm (3.4 in)
1971	102.4 mm (4.0 in)
1972	43.7 mm (1.7 in)
1973	86.9 mm (3.4 in)
1974	63.6 mm (2.5 in)
1975	81.6 mm (3.2 in)
1976	147.4 mm (5.8 in)
1977	73.6 mm (2.9 in)
1978	49.6 mm (2.0 in)

Longest dry spell (CDD)

The longest dry spell of the year at Risdon, 1923 to 1978. The record is 35 days in 1923, marked on the chart; the median year is 19 days.

Longest dry spell (CDD) at Risdon by year
Year	Longest dry spell (CDD)
1923	35 days
1924	13 days
1925	16 days
1926	19 days
1927	18 days
1928	16 days
1929	16 days
1930	18 days
1931	31 days
1932	28 days
1933	19 days
1934	25 days
1935	18 days
1936	12 days
1937	23 days
1938	13 days
1939	19 days
1940	20 days
1941	27 days
1942	18 days
1943	18 days
1944	20 days
1945	26 days
1946	13 days
1947	15 days
1948	18 days
1949	30 days
1950	18 days
1951	26 days
1952	17 days
1953	22 days
1954	18 days
1955	17 days
1956	10 days
1957	24 days
1958	18 days
1959	31 days
1960	25 days
1961	20 days
1962	24 days
1963	19 days
1964	13 days
1965	23 days
1966	14 days
1967	24 days
1968	19 days
1969	21 days
1970	33 days
1971	24 days
1972	25 days
1973	16 days
1974	25 days
1975	20 days
1976	23 days
1977	22 days
1978	19 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

54 years, 1924 to 1977

A day with at least 41.8 mm (1.6 in) of rain is expected about once in 2 years. A day with at least 114.9 mm (4.5 in) of rain is expected about once in 100 years.

Rainfall return levels at Risdon: the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	41.8 mm (1.6 in)
5 years	60.1 mm (2.4 in)
10 years	72.7 mm (2.9 in)
25 years	89.2 mm (3.5 in)
50 years	101.9 mm (4.0 in)
100 years	114.9 mm (4.5 in)	Longer than the 54 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, 54 years of values from 1924 to 1977.

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: 119.4 mm (4.7 in) in 1954; 118.6 mm (4.7 in) in 1960; 75.7 mm (3.0 in) in 1957.

Download the Data

Data for Risdon standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Risdon 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 2026-10-14. Last revised 14 October 2026 (2026-10-14).