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Data as of 2025-12-31
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Built 2026-10-15 (15 October 2026)

Rosny Weather Records (ASN00094059)

Record envelope, standing records and threshold days for Rosny (ASN00094059), Australia, with 33 years of record.

Key Facts for Rosny

  • Rosny (ASN00094059) is a weather station in Australia at -42.87 latitude and 147.37 longitude, 12 m (40 ft) above sea level.
  • The station reports from 1938 to 1970, 33 years of record.
  • 0 records set at Rosny still stand.
  • Records are tracked for prcp: an element needs 30 years of data to be eligible.
  • Rosny set a daily record precipitation of 41.9 mm (1.6 in) on 22 October 1970.

About the Station

  • Location: Australia, -42.87 latitude, 147.37 longitude.
  • Elevation: 12 m (40 ft).
  • Period of record: 1938 to 1970, 33 years.
  • Eligible elements: prcp.

Daily Record Envelope and 2026

0 days at or beyond a record
Daily record high and record low at Rosny, with 2026 drawn through them The band shows the record high and record low for each calendar day at Rosny. The lines show the 2026 daily maximum and minimum. 0 days in 2026 matched or passed a record. Temperatures are in degrees Celsius. 000111 JanFebMarAprMayJunJulAugSepOctNovDec
The band shows the record high and record low for each calendar day at Rosny. 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 Rosny, with 2026 drawn through them
MonthHighest record highLowest record low2026 highest maximum2026 lowest minimum
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Which Years Hold Standing Records

0 standing records
Standing records at Rosny by the year they were set 0 records at Rosny still stand. 00000000000
0 records at Rosny still stand.
Standing records at Rosny by the year they were set
Year setStanding records

Wettest Day of Each Month

Jun: 138.7 mm (5.5 in)
Record daily precipitation for each month at Rosny The wettest day on record for each calendar month at Rosny. The most was 138.7 mm (5.5 in) on 7 June 1954. 050100150 Jan: 66.5 mm (2.6 in), 3 January 1970 Jan Feb: 55.6 mm (2.2 in), 19 February 1946 Feb Mar: 82.0 mm (3.2 in), 17 March 1946 Mar Apr: 127.0 mm (5.0 in), 23 April 1960 Apr May: 42.7 mm (1.7 in), 2 May 1960 May Jun: 138.7 mm (5.5 in), 7 June 1954 Jun Jul: 68.3 mm (2.7 in), 11 July 1967 Jul Aug: 35.6 mm (1.4 in), 19 August 1950 Aug Sep: 50.8 mm (2.0 in), 21 September 1953 Sep Oct: 50.0 mm (2.0 in), 20 October 1966 Oct Nov: 61.0 mm (2.4 in), 21 November 1954 Nov Dec: 71.9 mm (2.8 in), 5 December 1941 Dec
The wettest day on record for each calendar month at Rosny. The most was 138.7 mm (5.5 in) on 7 June 1954.
Record daily precipitation for each month at Rosny
MonthRecord daily precipitation (mm)Date
Jan66.5 mm (2.6 in)3 January 1970
Feb55.6 mm (2.2 in)19 February 1946
Mar82.0 mm (3.2 in)17 March 1946
Apr127.0 mm (5.0 in)23 April 1960
May42.7 mm (1.7 in)2 May 1960
Jun138.7 mm (5.5 in)7 June 1954
Jul68.3 mm (2.7 in)11 July 1967
Aug35.6 mm (1.4 in)19 August 1950
Sep50.8 mm (2.0 in)21 September 1953
Oct50.0 mm (2.0 in)20 October 1966
Nov61.0 mm (2.4 in)21 November 1954
Dec71.9 mm (2.8 in)5 December 1941

Latest Records

18
Latest records at Rosny
DateStationRecordValueBeat old record byOld record stoodSignificance
22 October 1970Rosny, AUdaily rain41.9 mm (1.6 in)27.7 mm (1.1 in)21 years49 of 100 (Notable)
31 August 1970Rosny, AUdaily rain11.9 mm (0.5 in)5.3 mm (0.21 in)8 years15 of 100 (Routine)
10 June 1970Rosny, AUdaily rain8.4 mm (0.33 in)6.1 mm (0.24 in)21 years14 of 100 (Routine)
21 March 1970Rosny, AUdaily rain34.3 mm (1.4 in)19.1 mm (0.8 in)12 years24 of 100 (Routine)
16 February 1970Rosny, AUdaily rain27.7 mm (1.1 in)21.3 mm (0.8 in)24 years31 of 100 (Routine)
3 January 1970Rosny, AUmonthly rain66.5 mm (2.6 in)14.7 mm (0.6 in)20 years35 of 100 (Notable)
14 December 1969Rosny, AUdaily rain20.3 mm (0.8 in)1.2 mm (0.05 in)18 years9 of 100 (Routine)
13 December 1969Rosny, AUdaily rain43.2 mm (1.7 in)34.6 mm (1.4 in)14 years47 of 100 (Notable)
28 November 1969Rosny, AUdaily rain18.3 mm (0.7 in)6.6 mm (0.26 in)11 years15 of 100 (Routine)
19 November 1969Rosny, AUdaily rain7.9 mm (0.31 in)4.1 mm (0.16 in)24 years15 of 100 (Routine)
18 November 1969Rosny, AUdaily rain18.8 mm (0.7 in)4.1 mm (0.16 in)26 years15 of 100 (Routine)
29 June 1969Rosny, AUdaily rain19.3 mm (0.8 in)11.7 mm (0.5 in)19 years17 of 100 (Routine)
26 June 1969Rosny, AUdaily rain8.9 mm (0.35 in)0.5 mm (0.02 in)12 years6 of 100 (Routine)
31 May 1969Rosny, AUdaily rain6.6 mm (0.26 in)0.2 mm (0.01 in)19 years8 of 100 (Routine)
30 May 1969Rosny, AUdaily rain31.2 mm (1.2 in)22.3 mm (0.9 in)16 years39 of 100 (Notable)
17 May 1969Rosny, AUdaily rain22.6 mm (0.9 in)7.4 mm (0.29 in)31 years20 of 100 (Routine)
9 April 1969Rosny, AUdaily rain22.9 mm (0.9 in)19.9 mm (0.8 in)30 years20 of 100 (Routine)
22 February 1969Rosny, AUdaily rain43.7 mm (1.7 in)36.8 mm (1.4 in)26 years47 of 100 (Notable)

Extremes by Year

1938 to 1970
Yearly extremes at Rosny: the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Wettest day (Rx1day)138.7 mm (5.5 in)195443.7 mm (1.7 in)33
Wettest five days (Rx5day)200.0 mm (7.9 in)196070.4 mm (2.8 in)33
Longest dry spell (CDD)36 days195921 days33

Wettest day (Rx1day)

Wettest day (Rx1day) at Rosny by year The wettest day of the year at Rosny, 1938 to 1970. The record is 138.7 mm (5.5 in) in 1954, marked on the chart; the median year is 43.7 mm (1.7 in). 0501001501940195019601970Record: 138.7 mm (5.5 in) in 1954
The wettest day of the year at Rosny, 1938 to 1970. The record is 138.7 mm (5.5 in) in 1954, marked on the chart; the median year is 43.7 mm (1.7 in).
Wettest day (Rx1day) at Rosny by year
YearWettest day (Rx1day)
193865.5 mm (2.6 in)
193939.4 mm (1.6 in)
194023.4 mm (0.9 in)
194171.9 mm (2.8 in)
194228.4 mm (1.1 in)
194348.8 mm (1.9 in)
194438.6 mm (1.5 in)
194541.9 mm (1.6 in)
194682.0 mm (3.2 in)
194749.0 mm (1.9 in)
194825.4 mm (1.0 in)
194951.8 mm (2.0 in)
195036.8 mm (1.4 in)
195168.6 mm (2.7 in)
195233.0 mm (1.3 in)
195350.8 mm (2.0 in)
1954138.7 mm (5.5 in)
195534.3 mm (1.4 in)
195640.6 mm (1.6 in)
195738.6 mm (1.5 in)
195853.1 mm (2.1 in)
195926.2 mm (1.0 in)
1960127.0 mm (5.0 in)
196162.7 mm (2.5 in)
196247.0 mm (1.9 in)
196321.6 mm (0.9 in)
196443.2 mm (1.7 in)
196523.9 mm (0.9 in)
196650.0 mm (2.0 in)
196768.3 mm (2.7 in)
196829.2 mm (1.1 in)
196943.7 mm (1.7 in)
197066.5 mm (2.6 in)

Wettest five days (Rx5day)

Wettest five days (Rx5day) at Rosny by year The wettest five days of the year at Rosny, 1938 to 1970. The record is 200.0 mm (7.9 in) in 1960, marked on the chart; the median year is 70.4 mm (2.8 in). 0501001502001940195019601970Record: 200.0 mm (7.9 in) in 1960
The wettest five days of the year at Rosny, 1938 to 1970. The record is 200.0 mm (7.9 in) in 1960, marked on the chart; the median year is 70.4 mm (2.8 in).
Wettest five days (Rx5day) at Rosny by year
YearWettest five days (Rx5day)
193893.0 mm (3.7 in)
193976.5 mm (3.0 in)
194038.3 mm (1.5 in)
1941113.8 mm (4.5 in)
194245.7 mm (1.8 in)
194366.1 mm (2.6 in)
194486.2 mm (3.4 in)
194546.0 mm (1.8 in)
1946104.1 mm (4.1 in)
194783.1 mm (3.3 in)
194833.7 mm (1.3 in)
194983.6 mm (3.3 in)
195052.3 mm (2.1 in)
195184.6 mm (3.3 in)
195267.4 mm (2.7 in)
1953100.6 mm (4.0 in)
1954196.8 mm (7.7 in)
195557.8 mm (2.3 in)
195670.4 mm (2.8 in)
195766.3 mm (2.6 in)
195872.4 mm (2.9 in)
195948.3 mm (1.9 in)
1960200.0 mm (7.9 in)
196170.6 mm (2.8 in)
196250.8 mm (2.0 in)
196328.9 mm (1.1 in)
196460.4 mm (2.4 in)
196555.2 mm (2.2 in)
196667.0 mm (2.6 in)
196793.5 mm (3.7 in)
196835.8 mm (1.4 in)
196979.7 mm (3.1 in)
197073.6 mm (2.9 in)

Longest dry spell (CDD)

Longest dry spell (CDD) at Rosny by year The longest dry spell of the year at Rosny, 1938 to 1970. The record is 36 days in 1959, marked on the chart; the median year is 21 days. 102030401940195019601970Record: 36 days in 1959
The longest dry spell of the year at Rosny, 1938 to 1970. The record is 36 days in 1959, marked on the chart; the median year is 21 days.
Longest dry spell (CDD) at Rosny by year
YearLongest dry spell (CDD)
193821 days
193919 days
194016 days
194127 days
194218 days
194319 days
194421 days
194525 days
194613 days
194725 days
194818 days
194923 days
195027 days
195126 days
195217 days
195323 days
195420 days
195518 days
195614 days
195723 days
195818 days
195936 days
196026 days
196131 days
196226 days
196319 days
196415 days
196525 days
196634 days
196724 days
196819 days
196921 days
197032 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

30 years, 1938 to 1969

A day with at least 43.5 mm (1.7 in) of rain is expected about once in 2 years. A day with at least 164.4 mm (6.5 in) of rain is expected about once in 100 years.

Rainfall return levels at Rosny: the daily rain expected about once in a given number of years
Expected about once inA day with at leastNote
2 years43.5 mm (1.7 in)
5 years64.3 mm (2.5 in)
10 years81.8 mm (3.2 in)
25 years109.4 mm (4.3 in)
50 years134.5 mm (5.3 in)Longer than the 30 years of record
100 years164.4 mm (6.5 in)Longer than the 30 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, 30 years of values from 1938 to 1969.

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: 138.7 mm (5.5 in) in 1954; 127.0 mm (5.0 in) in 1960; 82.0 mm (3.2 in) in 1946.

Download the Data

  • Data for Rosny standing records by year: CSV or JSON. Field meanings are on the data page.
  • Data for Rosny 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 . Last revised (2025-12-31).