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Built 2026-10-15 (15 October 2026)

Derrinallum (Post Office) Weather Records (ASN00089074)

Record envelope, standing records and threshold days for Derrinallum (Post Office) (ASN00089074), Australia, with 71 years of record.

Key Facts for Derrinallum (Post Office)

  • Derrinallum (Post Office) (ASN00089074) is a weather station in Australia at -37.95 latitude and 143.22 longitude, 177 m (581 ft) above sea level.
  • The station reports from 1956 to 2026, 71 years of record.
  • 0 records set at Derrinallum (Post Office) still stand.
  • Records are tracked for prcp: an element needs 30 years of data to be eligible.
  • Derrinallum (Post Office) set a daily record precipitation of 9.8 mm (0.39 in) on 6 September 2026 (provisional).

Provisional Records

Records set in the last 60 days are provisional until they clear the revision window.

About the Station

  • Location: Australia, -37.95 latitude, 143.22 longitude.
  • Elevation: 177 m (581 ft).
  • Period of record: 1956 to 2026, 71 years.
  • Eligible elements: prcp.

Daily Record Envelope and 2026

0 days at or beyond a record
Daily record high and record low at Derrinallum (Post Office), with 2026 drawn through them The band shows the record high and record low for each calendar day at Derrinallum (Post Office). 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 Derrinallum (Post Office). 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 Derrinallum (Post Office), with 2026 drawn through them
MonthHighest record highLowest record low2026 highest maximum2026 lowest minimum
Jann/an/an/an/a
Febn/an/an/an/a
Marn/an/an/an/a
Aprn/an/an/an/a
Mayn/an/an/an/a
Junn/an/an/an/a
Juln/an/an/an/a
Augn/an/an/an/a
Sepn/an/an/an/a
Octn/an/an/an/a
Novn/an/an/an/a
Decn/an/an/an/a

Which Years Hold Standing Records

0 standing records
Standing records at Derrinallum (Post Office) by the year they were set 0 records at Derrinallum (Post Office) still stand. 00000000000
0 records at Derrinallum (Post Office) still stand.
Standing records at Derrinallum (Post Office) by the year they were set
Year setStanding records

Wettest Day of Each Month

Apr: 97.2 mm (3.8 in)
Record daily precipitation for each month at Derrinallum (Post Office) The wettest day on record for each calendar month at Derrinallum (Post Office). The most was 97.2 mm (3.8 in) on 23 April 1980. 0255075100 Jan: 83.2 mm (3.3 in), 14 January 1974 Jan Feb: 90.7 mm (3.6 in), 6 February 1973 Feb Mar: 54.1 mm (2.1 in), 31 March 1959 Mar Apr: 97.2 mm (3.8 in), 23 April 1980 Apr May: 40.4 mm (1.6 in), 6 May 2000 May Jun: 34.2 mm (1.3 in), 10 June 2004 Jun Jul: 41.0 mm (1.6 in), 4 July 1986 Jul Aug: 41.9 mm (1.6 in), 28 August 1969 Aug Sep: 46.6 mm (1.8 in), 1 September 1993 Sep Oct: 48.4 mm (1.9 in), 11 October 1990 Oct Nov: 85.4 mm (3.4 in), 4 November 2007 Nov Dec: 77.5 mm (3.1 in), 13 December 1966 Dec
The wettest day on record for each calendar month at Derrinallum (Post Office). The most was 97.2 mm (3.8 in) on 23 April 1980.
Record daily precipitation for each month at Derrinallum (Post Office)
MonthRecord daily precipitation (mm)Date
Jan83.2 mm (3.3 in)14 January 1974
Feb90.7 mm (3.6 in)6 February 1973
Mar54.1 mm (2.1 in)31 March 1959
Apr97.2 mm (3.8 in)23 April 1980
May40.4 mm (1.6 in)6 May 2000
Jun34.2 mm (1.3 in)10 June 2004
Jul41.0 mm (1.6 in)4 July 1986
Aug41.9 mm (1.6 in)28 August 1969
Sep46.6 mm (1.8 in)1 September 1993
Oct48.4 mm (1.9 in)11 October 1990
Nov85.4 mm (3.4 in)4 November 2007
Dec77.5 mm (3.1 in)13 December 1966

Latest Records

20
Latest records at Derrinallum (Post Office)
DateStationRecordValueBeat old record byOld record stoodSignificance
6 September 2026Derrinallum (Post Office), AUdaily rain (Provisional)9.8 mm (0.39 in)2.6 mm (0.10 in)27 years20 of 100 (Routine)
5 June 2026Derrinallum (Post Office), AUdaily rain23.8 mm (0.9 in)5.0 mm (0.20 in)40 years20 of 100 (Routine)
2 June 2026Derrinallum (Post Office), AUdaily rain (Tie)11.2 mm (0.4 in)tie49 years5 of 100 (Routine)
3 November 2025Derrinallum (Post Office), AUdaily rain13.2 mm (0.5 in)0.2 mm (0.01 in)48 years20 of 100 (Routine)
25 June 2025Derrinallum (Post Office), AUdaily rain13.6 mm (0.5 in)0.4 mm (0.02 in)31 years16 of 100 (Routine)
8 June 2025Derrinallum (Post Office), AUdaily rain26.4 mm (1.0 in)8.2 mm (0.32 in)42 years38 of 100 (Notable)
26 April 2025Derrinallum (Post Office), AUdaily rain14.6 mm (0.6 in)3.9 mm (0.15 in)54 years20 of 100 (Routine)
19 October 2024Derrinallum (Post Office), AUdaily rain36.6 mm (1.4 in)24.6 mm (1.0 in)7 years48 of 100 (Notable)
16 October 2024Derrinallum (Post Office), AUdaily rain29.2 mm (1.1 in)5.2 mm (0.20 in)37 years25 of 100 (Routine)
21 July 2024Derrinallum (Post Office), AUdaily rain11.0 mm (0.4 in)0.8 mm (0.03 in)60 years20 of 100 (Routine)
17 January 2024Derrinallum (Post Office), AUdaily rain18.0 mm (0.7 in)13.6 mm (0.5 in)44 years20 of 100 (Routine)
8 January 2024Derrinallum (Post Office), AUdaily rain16.0 mm (0.6 in)7.0 mm (0.28 in)20 years18 of 100 (Routine)
25 December 2023Derrinallum (Post Office), AUdaily rain34.0 mm (1.3 in)28.6 mm (1.1 in)16 years45 of 100 (Notable)
19 June 2023Derrinallum (Post Office), AUdaily rain11.0 mm (0.4 in)0.3 mm (0.01 in)61 years20 of 100 (Routine)
20 November 2022Derrinallum (Post Office), AUdaily rain27.8 mm (1.1 in)10.8 mm (0.4 in)29 years28 of 100 (Routine)
25 October 2022Derrinallum (Post Office), AUdaily rain10.8 mm (0.4 in)0.4 mm (0.02 in)21 years12 of 100 (Routine)
22 October 2022Derrinallum (Post Office), AUdaily rain33.6 mm (1.3 in)5.0 mm (0.20 in)36 years24 of 100 (Routine)
14 October 2022Derrinallum (Post Office), AUdaily rain31.8 mm (1.3 in)10.4 mm (0.4 in)0 years24 of 100 (Routine)
13 October 2022Derrinallum (Post Office), AUdaily rain37.8 mm (1.5 in)23.4 mm (0.9 in)12 years49 of 100 (Notable)
27 September 2022Derrinallum (Post Office), AUdaily rain18.4 mm (0.7 in)3.8 mm (0.15 in)44 years20 of 100 (Routine)

Extremes by Year

1956 to 2026
Yearly extremes at Derrinallum (Post Office): the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Wettest day (Rx1day)97.2 mm (3.8 in)198038.8 mm (1.5 in)71
Wettest five days (Rx5day)140.4 mm (5.5 in)201154.4 mm (2.1 in)71
Longest dry spell (CDD)55 days202421 days71

Wettest day (Rx1day)

Wettest day (Rx1day) at Derrinallum (Post Office) by year The wettest day of the year at Derrinallum (Post Office), 1956 to 2026. The record is 97.2 mm (3.8 in) in 1980, marked on the chart; the median year is 38.8 mm (1.5 in). 02550751001960198020002020Record: 97.2 mm (3.8 in) in 1980
The wettest day of the year at Derrinallum (Post Office), 1956 to 2026. The record is 97.2 mm (3.8 in) in 1980, marked on the chart; the median year is 38.8 mm (1.5 in).
Wettest day (Rx1day) at Derrinallum (Post Office) by year
YearWettest day (Rx1day)
195614.0 mm (0.6 in)
195767.3 mm (2.6 in)
195822.9 mm (0.9 in)
195958.4 mm (2.3 in)
196047.5 mm (1.9 in)
196139.1 mm (1.5 in)
196224.9 mm (1.0 in)
196350.5 mm (2.0 in)
196441.9 mm (1.6 in)
196524.1 mm (0.9 in)
196677.5 mm (3.1 in)
196714.2 mm (0.6 in)
196831.8 mm (1.3 in)
196941.9 mm (1.6 in)
197022.1 mm (0.9 in)
197121.8 mm (0.9 in)
197238.1 mm (1.5 in)
197390.7 mm (3.6 in)
197483.2 mm (3.3 in)
197530.4 mm (1.2 in)
197625.2 mm (1.0 in)
197738.8 mm (1.5 in)
197832.4 mm (1.3 in)
197922.8 mm (0.9 in)
198097.2 mm (3.8 in)
198134.4 mm (1.4 in)
198218.0 mm (0.7 in)
198342.2 mm (1.7 in)
198424.4 mm (1.0 in)
198538.2 mm (1.5 in)
198641.0 mm (1.6 in)
198750.0 mm (2.0 in)
198824.4 mm (1.0 in)
198928.6 mm (1.1 in)
199048.4 mm (1.9 in)
199156.0 mm (2.2 in)
199287.4 mm (3.4 in)
199346.6 mm (1.8 in)
199427.0 mm (1.1 in)
199557.4 mm (2.3 in)
199623.8 mm (0.9 in)
199747.0 mm (1.9 in)
199839.2 mm (1.5 in)
199926.2 mm (1.0 in)
200040.4 mm (1.6 in)
200142.0 mm (1.7 in)
200277.0 mm (3.0 in)
200331.0 mm (1.2 in)
200439.6 mm (1.6 in)
200571.4 mm (2.8 in)
200628.6 mm (1.1 in)
200785.4 mm (3.4 in)
200852.6 mm (2.1 in)
200927.4 mm (1.1 in)
201058.0 mm (2.3 in)
201156.6 mm (2.2 in)
201225.6 mm (1.0 in)
201323.2 mm (0.9 in)
201418.8 mm (0.7 in)
201554.0 mm (2.1 in)
201655.0 mm (2.2 in)
201750.8 mm (2.0 in)
201824.0 mm (0.9 in)
201935.4 mm (1.4 in)
202035.0 mm (1.4 in)
202133.6 mm (1.3 in)
202240.0 mm (1.6 in)
202342.6 mm (1.7 in)
202436.6 mm (1.4 in)
202528.6 mm (1.1 in)
202623.8 mm (0.9 in)

Wettest five days (Rx5day)

Wettest five days (Rx5day) at Derrinallum (Post Office) by year The wettest five days of the year at Derrinallum (Post Office), 1956 to 2026. The record is 140.4 mm (5.5 in) in 2011, marked on the chart; the median year is 54.4 mm (2.1 in). 0501001501960198020002020Record: 140.4 mm (5.5 in) in 2011
The wettest five days of the year at Derrinallum (Post Office), 1956 to 2026. The record is 140.4 mm (5.5 in) in 2011, marked on the chart; the median year is 54.4 mm (2.1 in).
Wettest five days (Rx5day) at Derrinallum (Post Office) by year
YearWettest five days (Rx5day)
195635.0 mm (1.4 in)
195774.7 mm (2.9 in)
195846.6 mm (1.8 in)
195989.4 mm (3.5 in)
196068.1 mm (2.7 in)
196163.2 mm (2.5 in)
196236.5 mm (1.4 in)
196379.7 mm (3.1 in)
196467.8 mm (2.7 in)
196548.5 mm (1.9 in)
196690.5 mm (3.6 in)
196725.1 mm (1.0 in)
196845.3 mm (1.8 in)
196958.9 mm (2.3 in)
197037.7 mm (1.5 in)
197140.9 mm (1.6 in)
197265.1 mm (2.6 in)
197397.1 mm (3.8 in)
197488.8 mm (3.5 in)
197550.8 mm (2.0 in)
197641.8 mm (1.6 in)
197752.2 mm (2.1 in)
197854.0 mm (2.1 in)
197924.8 mm (1.0 in)
198027.4 mm (1.1 in)
198125.0 mm (1.0 in)
198221.0 mm (0.8 in)
198377.8 mm (3.1 in)
198426.2 mm (1.0 in)
198554.4 mm (2.1 in)
198633.2 mm (1.3 in)
198764.2 mm (2.5 in)
198845.0 mm (1.8 in)
198941.8 mm (1.6 in)
199074.2 mm (2.9 in)
199188.6 mm (3.5 in)
199289.8 mm (3.5 in)
199375.6 mm (3.0 in)
199443.4 mm (1.7 in)
199585.2 mm (3.4 in)
199644.6 mm (1.8 in)
199769.2 mm (2.7 in)
199847.8 mm (1.9 in)
199951.4 mm (2.0 in)
200054.4 mm (2.1 in)
200180.0 mm (3.1 in)
200279.8 mm (3.1 in)
200346.6 mm (1.8 in)
200468.2 mm (2.7 in)
2005105.8 mm (4.2 in)
200648.8 mm (1.9 in)
2007114.0 mm (4.5 in)
200866.6 mm (2.6 in)
200950.0 mm (2.0 in)
201078.4 mm (3.1 in)
2011140.4 mm (5.5 in)
201242.2 mm (1.7 in)
201345.6 mm (1.8 in)
201440.0 mm (1.6 in)
201554.0 mm (2.1 in)
201680.0 mm (3.1 in)
201768.4 mm (2.7 in)
201843.8 mm (1.7 in)
201948.4 mm (1.9 in)
202059.4 mm (2.3 in)
202149.4 mm (1.9 in)
202286.8 mm (3.4 in)
202380.0 mm (3.1 in)
202478.0 mm (3.1 in)
202563.8 mm (2.5 in)
202645.8 mm (1.8 in)

Longest dry spell (CDD)

Longest dry spell (CDD) at Derrinallum (Post Office) by year The longest dry spell of the year at Derrinallum (Post Office), 1956 to 2026. The record is 55 days in 2024, marked on the chart; the median year is 21 days. 02040601960198020002020Record: 55 days in 2024
The longest dry spell of the year at Derrinallum (Post Office), 1956 to 2026. The record is 55 days in 2024, marked on the chart; the median year is 21 days.
Longest dry spell (CDD) at Derrinallum (Post Office) by year
YearLongest dry spell (CDD)
19568 days
195723 days
195830 days
195925 days
196018 days
196134 days
196230 days
196328 days
196422 days
196525 days
196616 days
196731 days
196820 days
196930 days
197029 days
197122 days
197231 days
197315 days
197415 days
197522 days
197615 days
197725 days
197829 days
197916 days
198016 days
198125 days
198220 days
198325 days
198432 days
198519 days
198633 days
198729 days
198818 days
198921 days
199016 days
199120 days
199213 days
199319 days
199424 days
199518 days
199616 days
199716 days
199817 days
199920 days
200020 days
200131 days
200217 days
200324 days
200418 days
200525 days
200616 days
200716 days
200822 days
200938 days
201017 days
201115 days
201220 days
201322 days
201422 days
201519 days
201617 days
201721 days
201821 days
201920 days
202014 days
202113 days
202231 days
202324 days
202455 days
202524 days
202623 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

52 years, 1957 to 2025

A day with at least 39.4 mm (1.6 in) of rain is expected about once in 2 years. A day with at least 107.2 mm (4.2 in) of rain is expected about once in 100 years.

Rainfall return levels at Derrinallum (Post Office): the daily rain expected about once in a given number of years
Expected about once inA day with at leastNote
2 years39.4 mm (1.6 in)
5 years56.3 mm (2.2 in)
10 years67.9 mm (2.7 in)
25 years83.3 mm (3.3 in)
50 years95.1 mm (3.7 in)
100 years107.2 mm (4.2 in)Longer than the 52 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, 52 years of values from 1957 to 2025.

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: 90.7 mm (3.6 in) in 1973; 87.4 mm (3.4 in) in 1992; 85.4 mm (3.4 in) in 2007.

Download the Data

  • Data for Derrinallum (Post Office) standing records by year: CSV or JSON. Field meanings are on the data page.
  • Data for Derrinallum (Post Office) 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 . Last revised (2026-10-13).