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Built 2026-10-15 (15 October 2026)

Koomooloo Weather Records (ASN00020008)

Record envelope, standing records and threshold days for Koomooloo (ASN00020008), Australia, with 87 years of record.

Key Facts for Koomooloo

  • Koomooloo (ASN00020008) is a weather station in Australia at -33.57 latitude and 139.70 longitude, 90 m (295 ft) above sea level.
  • The station reports from 1885 to 1971, 87 years of record.
  • 0 records set at Koomooloo still stand.
  • Records are tracked for prcp: an element needs 30 years of data to be eligible.
  • Koomooloo set a daily record precipitation of 1.5 mm (0.06 in) on 23 July 1971.

About the Station

  • Location: Australia, -33.57 latitude, 139.70 longitude.
  • Elevation: 90 m (295 ft).
  • Period of record: 1885 to 1971, 87 years.
  • Eligible elements: prcp.

Daily Record Envelope and 2026

0 days at or beyond a record
Daily record high and record low at Koomooloo, with 2026 drawn through them The band shows the record high and record low for each calendar day at Koomooloo. 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 Koomooloo. 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 Koomooloo, 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 Koomooloo by the year they were set 0 records at Koomooloo still stand. 00000000000
0 records at Koomooloo still stand.
Standing records at Koomooloo by the year they were set
Year setStanding records

All-Time Record Progression

1 new records
When Koomooloo set new all-time records 1 all-time records were set at Koomooloo between 16 February 1919 and 16 February 1919. Each dot is a new record. Record daily precipitation16 February 1919: Record daily precipitation 72.6 mm (2.9 in)1920
1 all-time records were set at Koomooloo between 16 February 1919 and 16 February 1919. Each dot is a new record.
When Koomooloo set new all-time records
DateKindDetail
1919-02-16Record daily precipitationRecord daily precipitation 72.6 mm (2.9 in)

Wettest Day of Each Month

Feb: 72.6 mm (2.9 in)
Record daily precipitation for each month at Koomooloo The wettest day on record for each calendar month at Koomooloo. The most was 72.6 mm (2.9 in) on 16 February 1919. 020406080 Jan: 70.9 mm (2.8 in), 1 January 1889 Jan Feb: 72.6 mm (2.9 in), 16 February 1919 Feb Mar: 46.2 mm (1.8 in), 6 March 1910 Mar Apr: 36.8 mm (1.4 in), 28 April 1963 Apr May: 38.6 mm (1.5 in), 29 May 1893 May Jun: 28.4 mm (1.1 in), 17 June 1906 Jun Jul: 36.6 mm (1.4 in), 18 July 1916 Jul Aug: 59.7 mm (2.4 in), 26 August 1903 Aug Sep: 40.6 mm (1.6 in), 1 September 1908 Sep Oct: 41.1 mm (1.6 in), 16 October 1908 Oct Nov: 54.1 mm (2.1 in), 17 November 1961 Nov Dec: 66.3 mm (2.6 in), 25 December 1919 Dec
The wettest day on record for each calendar month at Koomooloo. The most was 72.6 mm (2.9 in) on 16 February 1919.
Record daily precipitation for each month at Koomooloo
MonthRecord daily precipitation (mm)Date
Jan70.9 mm (2.8 in)1 January 1889
Feb72.6 mm (2.9 in)16 February 1919
Mar46.2 mm (1.8 in)6 March 1910
Apr36.8 mm (1.4 in)28 April 1963
May38.6 mm (1.5 in)29 May 1893
Jun28.4 mm (1.1 in)17 June 1906
Jul36.6 mm (1.4 in)18 July 1916
Aug59.7 mm (2.4 in)26 August 1903
Sep40.6 mm (1.6 in)1 September 1908
Oct41.1 mm (1.6 in)16 October 1908
Nov54.1 mm (2.1 in)17 November 1961
Dec66.3 mm (2.6 in)25 December 1919

Latest Records

20
Latest records at Koomooloo
DateStationRecordValueBeat old record byOld record stoodSignificance
23 July 1971Koomooloo, AUdaily rain1.5 mm (0.06 in)1.0 mm (0.04 in)8 years12 of 100 (Routine)
8 June 1971Koomooloo, AUdaily rain19.6 mm (0.8 in)16.8 mm (0.7 in)8 years20 of 100 (Routine)
2 June 1971Koomooloo, AUdaily rain7.6 mm (0.30 in)2.5 mm (0.10 in)21 years18 of 100 (Routine)
18 April 1971Koomooloo, AUdaily rain14.0 mm (0.6 in)6.9 mm (0.27 in)2 years20 of 100 (Routine)
10 March 1971Koomooloo, AUdaily rain3.0 mm (0.12 in)3.0 mm (0.12 in)84 years20 of 100 (Routine)
26 February 1971Koomooloo, AUdaily rain29.5 mm (1.2 in)8.7 mm (0.34 in)71 years36 of 100 (Notable)
5 December 1970Koomooloo, AUdaily rain5.1 mm (0.20 in)2.1 mm (0.08 in)59 years20 of 100 (Routine)
11 November 1970Koomooloo, AUdaily rain52.1 mm (2.1 in)33.0 mm (1.3 in)76 years65 of 100 (Major)
15 September 1970Koomooloo, AUdaily rain6.4 mm (0.25 in)4.4 mm (0.17 in)60 years20 of 100 (Routine)
5 November 1969Koomooloo, AUdaily rain10.7 mm (0.4 in)4.1 mm (0.16 in)69 years20 of 100 (Routine)
13 September 1969Koomooloo, AUdaily rain13.0 mm (0.5 in)5.9 mm (0.23 in)8 years18 of 100 (Routine)
12 July 1969Koomooloo, AUdaily rain16.8 mm (0.7 in)7.9 mm (0.31 in)78 years20 of 100 (Routine)
24 March 1969Koomooloo, AUdaily rain7.9 mm (0.31 in)2.8 mm (0.11 in)40 years20 of 100 (Routine)
23 March 1969Koomooloo, AUdaily rain7.4 mm (0.29 in)3.6 mm (0.14 in)74 years20 of 100 (Routine)
22 February 1969Koomooloo, AUdaily rain13.5 mm (0.5 in)7.7 mm (0.30 in)61 years20 of 100 (Routine)
10 February 1969Koomooloo, AUdaily rain3.0 mm (0.12 in)0.5 mm (0.02 in)27 years16 of 100 (Routine)
23 November 1968Koomooloo, AUdaily rain2.3 mm (0.09 in)0.8 mm (0.03 in)6 years9 of 100 (Routine)
2 November 1968Koomooloo, AUdaily rain7.4 mm (0.29 in)4.6 mm (0.18 in)48 years20 of 100 (Routine)
2 July 1968Koomooloo, AUdaily rain21.1 mm (0.8 in)7.4 mm (0.29 in)3 years20 of 100 (Routine)
28 June 1968Koomooloo, AUdaily rain13.5 mm (0.5 in)0.8 mm (0.03 in)71 years20 of 100 (Routine)

Extremes by Year

1885 to 1971
Yearly extremes at Koomooloo: the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Wettest day (Rx1day)72.6 mm (2.9 in)191928.2 mm (1.1 in)61
Wettest five days (Rx5day)107.2 mm (4.2 in)188937.6 mm (1.5 in)61
Longest dry spell (CDD)121 days191656 days61

Wettest day (Rx1day)

Wettest day (Rx1day) at Koomooloo by year The wettest day of the year at Koomooloo, 1885 to 1971. The record is 72.6 mm (2.9 in) in 1919, marked on the chart; the median year is 28.2 mm (1.1 in). 0204060801900192019401960Record: 72.6 mm (2.9 in) in 1919
The wettest day of the year at Koomooloo, 1885 to 1971. The record is 72.6 mm (2.9 in) in 1919, marked on the chart; the median year is 28.2 mm (1.1 in).
Wettest day (Rx1day) at Koomooloo by year
YearWettest day (Rx1day)
188560.2 mm (2.4 in)
188629.0 mm (1.1 in)
188726.2 mm (1.0 in)
188811.7 mm (0.5 in)
188970.9 mm (2.8 in)
189021.6 mm (0.9 in)
189121.1 mm (0.8 in)
189223.1 mm (0.9 in)
189338.6 mm (1.5 in)
189438.1 mm (1.5 in)
189520.3 mm (0.8 in)
189617.8 mm (0.7 in)
189722.9 mm (0.9 in)
189827.9 mm (1.1 in)
189928.2 mm (1.1 in)
190013.2 mm (0.5 in)
190116.0 mm (0.6 in)
190220.3 mm (0.8 in)
190359.7 mm (2.4 in)
190439.9 mm (1.6 in)
190522.9 mm (0.9 in)
190628.4 mm (1.1 in)
190724.6 mm (1.0 in)
190841.1 mm (1.6 in)
190920.6 mm (0.8 in)
191046.2 mm (1.8 in)
191133.5 mm (1.3 in)
191227.9 mm (1.1 in)
191335.6 mm (1.4 in)
191416.5 mm (0.6 in)
191516.0 mm (0.6 in)
191636.6 mm (1.4 in)
191740.9 mm (1.6 in)
191832.0 mm (1.3 in)
191972.6 mm (2.9 in)
192030.5 mm (1.2 in)
192146.2 mm (1.8 in)
192221.8 mm (0.9 in)
192310.2 mm (0.4 in)
192427.4 mm (1.1 in)
192544.5 mm (1.8 in)
192720.3 mm (0.8 in)
192832.5 mm (1.3 in)
194216.0 mm (0.6 in)
194317.5 mm (0.7 in)
194423.1 mm (0.9 in)
194533.3 mm (1.3 in)
194645.0 mm (1.8 in)
194919.1 mm (0.8 in)
196022.9 mm (0.9 in)
196154.1 mm (2.1 in)
196238.6 mm (1.5 in)
196336.8 mm (1.4 in)
196431.2 mm (1.2 in)
196537.1 mm (1.5 in)
196634.3 mm (1.4 in)
19678.9 mm (0.35 in)
196821.1 mm (0.8 in)
196916.8 mm (0.7 in)
197052.1 mm (2.1 in)
197129.5 mm (1.2 in)

Wettest five days (Rx5day)

Wettest five days (Rx5day) at Koomooloo by year The wettest five days of the year at Koomooloo, 1885 to 1971. The record is 107.2 mm (4.2 in) in 1889, marked on the chart; the median year is 37.6 mm (1.5 in). 02550751001251900192019401960Record: 107.2 mm (4.2 in) in 1889
The wettest five days of the year at Koomooloo, 1885 to 1971. The record is 107.2 mm (4.2 in) in 1889, marked on the chart; the median year is 37.6 mm (1.5 in).
Wettest five days (Rx5day) at Koomooloo by year
YearWettest five days (Rx5day)
188582.8 mm (3.3 in)
188629.0 mm (1.1 in)
188744.5 mm (1.8 in)
188811.7 mm (0.5 in)
1889107.2 mm (4.2 in)
189030.2 mm (1.2 in)
189149.6 mm (2.0 in)
189250.0 mm (2.0 in)
189367.1 mm (2.6 in)
189448.3 mm (1.9 in)
189520.3 mm (0.8 in)
189617.8 mm (0.7 in)
189732.8 mm (1.3 in)
189838.3 mm (1.5 in)
189948.8 mm (1.9 in)
190013.2 mm (0.5 in)
190116.0 mm (0.6 in)
190220.3 mm (0.8 in)
190372.5 mm (2.9 in)
190447.3 mm (1.9 in)
190525.9 mm (1.0 in)
190630.4 mm (1.2 in)
190735.8 mm (1.4 in)
190862.2 mm (2.4 in)
190931.5 mm (1.2 in)
191063.5 mm (2.5 in)
191136.5 mm (1.4 in)
191237.0 mm (1.5 in)
191338.6 mm (1.5 in)
191416.5 mm (0.6 in)
191516.0 mm (0.6 in)
191648.3 mm (1.9 in)
191740.9 mm (1.6 in)
191842.9 mm (1.7 in)
191986.6 mm (3.4 in)
192030.5 mm (1.2 in)
192186.3 mm (3.4 in)
192243.9 mm (1.7 in)
192311.4 mm (0.4 in)
192430.5 mm (1.2 in)
192546.3 mm (1.8 in)
192720.3 mm (0.8 in)
192848.2 mm (1.9 in)
194227.2 mm (1.1 in)
194324.7 mm (1.0 in)
194425.6 mm (1.0 in)
194540.4 mm (1.6 in)
194662.3 mm (2.5 in)
194924.2 mm (1.0 in)
196026.4 mm (1.0 in)
196166.6 mm (2.6 in)
196288.9 mm (3.5 in)
196361.4 mm (2.4 in)
196454.1 mm (2.1 in)
196537.6 mm (1.5 in)
196683.6 mm (3.3 in)
196715.2 mm (0.6 in)
196834.6 mm (1.4 in)
196919.3 mm (0.8 in)
197056.4 mm (2.2 in)
197133.6 mm (1.3 in)

Longest dry spell (CDD)

Longest dry spell (CDD) at Koomooloo by year The longest dry spell of the year at Koomooloo, 1885 to 1971. The record is 121 days in 1916, marked on the chart; the median year is 56 days. 0501001501900192019401960Record: 121 days in 1916
The longest dry spell of the year at Koomooloo, 1885 to 1971. The record is 121 days in 1916, marked on the chart; the median year is 56 days.
Longest dry spell (CDD) at Koomooloo by year
YearLongest dry spell (CDD)
188539 days
1886114 days
188727 days
188869 days
188930 days
189033 days
189170 days
189252 days
189389 days
189464 days
189560 days
189661 days
189796 days
189852 days
189956 days
190053 days
190156 days
190258 days
190325 days
190451 days
190563 days
190648 days
190794 days
190864 days
190953 days
191062 days
191148 days
191276 days
191365 days
191481 days
191565 days
1916121 days
191740 days
191888 days
191944 days
192051 days
192148 days
1922108 days
1923106 days
192468 days
192558 days
192755 days
192830 days
194262 days
194357 days
194454 days
194547 days
194616 days
194962 days
196045 days
196139 days
196255 days
196397 days
196461 days
196568 days
196636 days
196776 days
196851 days
196944 days
197040 days
197156 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

53 years, 1886 to 1970

A day with at least 26.4 mm (1.0 in) of rain is expected about once in 2 years. A day with at least 74.1 mm (2.9 in) of rain is expected about once in 100 years.

Rainfall return levels at Koomooloo: the daily rain expected about once in a given number of years
Expected about once inA day with at leastNote
2 years26.4 mm (1.0 in)
5 years38.0 mm (1.5 in)
10 years46.1 mm (1.8 in)
25 years56.9 mm (2.2 in)
50 years65.4 mm (2.6 in)
100 years74.1 mm (2.9 in)Longer than the 53 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, 53 years of values from 1886 to 1970.

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: 72.6 mm (2.9 in) in 1919; 70.9 mm (2.8 in) in 1889; 54.1 mm (2.1 in) in 1961.

Download the Data

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