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Data as of 2025-12-31
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Built 2026-10-16 (16 October 2026)

Altona Weather Records (ASN00012112)

Record envelope, standing records and threshold days for Altona (ASN00012112), Australia, with 47 years of record.

Key Facts for Altona

  • Altona (ASN00012112) is a weather station in Australia at -27.54 latitude and 119.99 longitude, 500 m (1,640 ft) above sea level.
  • The station reports from 1956 to 2002, 47 years of record.
  • 0 records set at Altona still stand.
  • Records are tracked for prcp: an element needs 30 years of data to be eligible.
  • Altona set a daily record precipitation of 22.4 mm (0.9 in) on 30 January 2002.

About the Station

  • Location: Australia, -27.54 latitude, 119.99 longitude.
  • Elevation: 500 m (1,640 ft).
  • Period of record: 1956 to 2002, 47 years.
  • Eligible elements: prcp.

Daily Record Envelope and 2026

0 days at or beyond a record
Daily record high and record low at Altona, with 2026 drawn through them The band shows the record high and record low for each calendar day at Altona. 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 Altona. 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 Altona, with 2026 drawn through them
MonthHighest record highLowest record low2026 highest maximum2026 lowest minimum
Jann/an/an/an/a
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Which Years Hold Standing Records

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

All-Time Record Progression

1 new records
When Altona set new all-time records 1 all-time records were set at Altona between 23 February 2001 and 23 February 2001. Each dot is a new record. Record daily precipitation23 February 2001: Record daily precipitation 88.6 mm (3.5 in)
1 all-time records were set at Altona between 23 February 2001 and 23 February 2001. Each dot is a new record.
When Altona set new all-time records
DateKindDetail
2001-02-23Record daily precipitationRecord daily precipitation 88.6 mm (3.5 in)

Wettest Day of Each Month

Feb: 88.6 mm (3.5 in)
Record daily precipitation for each month at Altona The wettest day on record for each calendar month at Altona. The most was 88.6 mm (3.5 in) on 23 February 2001. 0255075100 Jan: 84.8 mm (3.3 in), 31 January 1960 Jan Feb: 88.6 mm (3.5 in), 23 February 2001 Feb Mar: 78.8 mm (3.1 in), 10 March 1974 Mar Apr: 43.0 mm (1.7 in), 17 April 1975 Apr May: 34.4 mm (1.4 in), 30 May 1975 May Jun: 64.0 mm (2.5 in), 13 June 1989 Jun Jul: 20.7 mm (0.8 in), 13 July 1974 Jul Aug: 33.0 mm (1.3 in), 9 August 1965 Aug Sep: 15.0 mm (0.6 in), 15 September 1982 Sep Oct: 38.0 mm (1.5 in), 7 October 2001 Oct Nov: 25.4 mm (1.0 in), 27 November 1965 Nov Dec: 52.0 mm (2.0 in), 7 December 1998 Dec
The wettest day on record for each calendar month at Altona. The most was 88.6 mm (3.5 in) on 23 February 2001.
Record daily precipitation for each month at Altona
MonthRecord daily precipitation (mm)Date
Jan84.8 mm (3.3 in)31 January 1960
Feb88.6 mm (3.5 in)23 February 2001
Mar78.8 mm (3.1 in)10 March 1974
Apr43.0 mm (1.7 in)17 April 1975
May34.4 mm (1.4 in)30 May 1975
Jun64.0 mm (2.5 in)13 June 1989
Jul20.7 mm (0.8 in)13 July 1974
Aug33.0 mm (1.3 in)9 August 1965
Sep15.0 mm (0.6 in)15 September 1982
Oct38.0 mm (1.5 in)7 October 2001
Nov25.4 mm (1.0 in)27 November 1965
Dec52.0 mm (2.0 in)7 December 1998

Latest Records

20
Latest records at Altona
DateStationRecordValueBeat old record byOld record stoodSignificance
30 January 2002Altona, AUdaily rain22.4 mm (0.9 in)7.4 mm (0.29 in)2 years9 of 100 (Routine)
19 January 2002Altona, AUdaily rain3.2 mm (0.13 in)2.9 mm (0.11 in)44 years19 of 100 (Routine)
3 January 2002Altona, AUdaily rain14.6 mm (0.6 in)7.2 mm (0.28 in)16 years13 of 100 (Routine)
2 January 2002Altona, AUdaily rain26.2 mm (1.0 in)20.6 mm (0.8 in)36 years28 of 100 (Routine)
15 November 2001Altona, AUdaily rain9.4 mm (0.37 in)5.3 mm (0.21 in)28 years20 of 100 (Routine)
31 October 2001Altona, AUdaily rain17.0 mm (0.7 in)17.0 mm (0.7 in)44 years20 of 100 (Routine)
30 October 2001Altona, AUdaily rain5.0 mm (0.20 in)0.4 mm (0.02 in)24 years11 of 100 (Routine)
7 October 2001Altona, AUmonthly rain38.0 mm (1.5 in)10.6 mm (0.4 in)37 years44 of 100 (Notable)
6 October 2001Altona, AUdaily rain14.2 mm (0.6 in)11.0 mm (0.4 in)0 years20 of 100 (Routine)
1 August 2001Altona, AUdaily rain1.4 mm (0.06 in)1.4 mm (0.06 in)44 years19 of 100 (Routine)
12 May 2001Altona, AUdaily rain10.0 mm (0.4 in)1.6 mm (0.06 in)16 years10 of 100 (Routine)
11 May 2001Altona, AUdaily rain6.2 mm (0.24 in)5.4 mm (0.21 in)22 years17 of 100 (Routine)
10 May 2001Altona, AUdaily rain5.4 mm (0.21 in)1.4 mm (0.06 in)24 years12 of 100 (Routine)
9 May 2001Altona, AUdaily rain7.6 mm (0.30 in)2.0 mm (0.08 in)30 years15 of 100 (Routine)
25 April 2001Altona, AUdaily rain8.4 mm (0.33 in)7.4 mm (0.29 in)16 years16 of 100 (Routine)
24 April 2001Altona, AUdaily rain20.2 mm (0.8 in)14.9 mm (0.6 in)28 years20 of 100 (Routine)
23 February 2001Altona, AUall-time rain88.6 mm (3.5 in)3.8 mm (0.15 in)41 years39 of 100 (Notable)
14 January 2001Altona, AUdaily rain7.6 mm (0.30 in)4.6 mm (0.18 in)1 year7 of 100 (Routine)
17 December 2000Altona, AUdaily rain3.0 mm (0.12 in)3.0 mm (0.12 in)44 years20 of 100 (Routine)
14 December 2000Altona, AUdaily rain10.4 mm (0.4 in)3.4 mm (0.13 in)1 year7 of 100 (Routine)

Extremes by Year

1956 to 2002
Yearly extremes at Altona: the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Wettest day (Rx1day)88.6 mm (3.5 in)200126.6 mm (1.0 in)44
Wettest five days (Rx5day)151.7 mm (6.0 in)199732.7 mm (1.3 in)44
Longest dry spell (CDD)128 days196960 days44

Wettest day (Rx1day)

Wettest day (Rx1day) at Altona by year The wettest day of the year at Altona, 1956 to 2002. The record is 88.6 mm (3.5 in) in 2001, marked on the chart; the median year is 26.6 mm (1.0 in). 025507510019601970198019902000Record: 88.6 mm (3.5 in) in 2001
The wettest day of the year at Altona, 1956 to 2002. The record is 88.6 mm (3.5 in) in 2001, marked on the chart; the median year is 26.6 mm (1.0 in).
Wettest day (Rx1day) at Altona by year
YearWettest day (Rx1day)
19569.1 mm (0.36 in)
195726.2 mm (1.0 in)
195846.0 mm (1.8 in)
195931.8 mm (1.3 in)
196084.8 mm (3.3 in)
196129.2 mm (1.1 in)
196222.1 mm (0.9 in)
196327.4 mm (1.1 in)
196412.7 mm (0.5 in)
196533.0 mm (1.3 in)
196616.5 mm (0.6 in)
196837.3 mm (1.5 in)
196932.8 mm (1.3 in)
197023.1 mm (0.9 in)
197117.8 mm (0.7 in)
197212.7 mm (0.5 in)
197324.9 mm (1.0 in)
197478.8 mm (3.1 in)
197543.0 mm (1.7 in)
19767.0 mm (0.28 in)
197720.0 mm (0.8 in)
197830.0 mm (1.2 in)
197923.0 mm (0.9 in)
198020.4 mm (0.8 in)
198147.4 mm (1.9 in)
198227.0 mm (1.1 in)
198355.0 mm (2.2 in)
198437.0 mm (1.5 in)
198538.4 mm (1.5 in)
198617.6 mm (0.7 in)
198716.0 mm (0.6 in)
198818.4 mm (0.7 in)
198964.0 mm (2.5 in)
199059.0 mm (2.3 in)
199114.6 mm (0.6 in)
199217.6 mm (0.7 in)
19949.0 mm (0.35 in)
199517.5 mm (0.7 in)
199784.0 mm (3.3 in)
199852.0 mm (2.0 in)
199918.0 mm (0.7 in)
200045.0 mm (1.8 in)
200188.6 mm (3.5 in)
200226.2 mm (1.0 in)

Wettest five days (Rx5day)

Wettest five days (Rx5day) at Altona by year The wettest five days of the year at Altona, 1956 to 2002. The record is 151.7 mm (6.0 in) in 1997, marked on the chart; the median year is 32.7 mm (1.3 in). 05010015020019601970198019902000Record: 151.7 mm (6.0 in) in 1997
The wettest five days of the year at Altona, 1956 to 2002. The record is 151.7 mm (6.0 in) in 1997, marked on the chart; the median year is 32.7 mm (1.3 in).
Wettest five days (Rx5day) at Altona by year
YearWettest five days (Rx5day)
195610.9 mm (0.4 in)
195726.6 mm (1.0 in)
195849.6 mm (2.0 in)
195931.8 mm (1.3 in)
196089.6 mm (3.5 in)
196145.4 mm (1.8 in)
196222.1 mm (0.9 in)
196329.9 mm (1.2 in)
196412.7 mm (0.5 in)
196551.2 mm (2.0 in)
196633.0 mm (1.3 in)
196873.4 mm (2.9 in)
196934.0 mm (1.3 in)
197041.4 mm (1.6 in)
197132.3 mm (1.3 in)
197217.3 mm (0.7 in)
197349.8 mm (2.0 in)
197478.8 mm (3.1 in)
197543.0 mm (1.7 in)
19767.6 mm (0.30 in)
197724.6 mm (1.0 in)
197830.0 mm (1.2 in)
197923.0 mm (0.9 in)
198020.4 mm (0.8 in)
198149.4 mm (1.9 in)
198227.0 mm (1.1 in)
198355.0 mm (2.2 in)
198443.0 mm (1.7 in)
198561.8 mm (2.4 in)
198618.2 mm (0.7 in)
198716.4 mm (0.6 in)
198823.4 mm (0.9 in)
198983.0 mm (3.3 in)
1990101.0 mm (4.0 in)
199114.6 mm (0.6 in)
199221.0 mm (0.8 in)
19949.2 mm (0.36 in)
199519.5 mm (0.8 in)
1997151.7 mm (6.0 in)
199873.0 mm (2.9 in)
199922.0 mm (0.9 in)
200049.0 mm (1.9 in)
200196.8 mm (3.8 in)
200240.8 mm (1.6 in)

Longest dry spell (CDD)

Longest dry spell (CDD) at Altona by year The longest dry spell of the year at Altona, 1956 to 2002. The record is 128 days in 1969, marked on the chart; the median year is 60 days. 05010015019601970198019902000Record: 128 days in 1969
The longest dry spell of the year at Altona, 1956 to 2002. The record is 128 days in 1969, marked on the chart; the median year is 60 days.
Longest dry spell (CDD) at Altona by year
YearLongest dry spell (CDD)
195624 days
195799 days
195855 days
195962 days
196057 days
196175 days
196268 days
196341 days
1964112 days
196552 days
196637 days
196842 days
1969128 days
197081 days
197199 days
197290 days
197339 days
197458 days
197534 days
197680 days
197794 days
197876 days
197944 days
198046 days
198171 days
198250 days
198372 days
198492 days
1985103 days
198670 days
198777 days
198897 days
1989106 days
199015 days
1991114 days
199238 days
1994109 days
199514 days
199726 days
199831 days
199932 days
200052 days
200134 days
200210 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, 1957 to 2000

A day with at least 27.1 mm (1.1 in) of rain is expected about once in 2 years. A day with at least 98.9 mm (3.9 in) of rain is expected about once in 100 years.

Rainfall return levels at Altona: the daily rain expected about once in a given number of years
Expected about once inA day with at leastNote
2 years27.1 mm (1.1 in)
5 years42.6 mm (1.7 in)
10 years54.2 mm (2.1 in)
25 years70.7 mm (2.8 in)
50 years84.2 mm (3.3 in)Longer than the 30 years of record
100 years98.9 mm (3.9 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 1957 to 2000.

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: 84.8 mm (3.3 in) in 1960; 78.8 mm (3.1 in) in 1974; 55.0 mm (2.2 in) in 1983.

Download the Data

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