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

Mount Cotton Farm Weather Records (ASN00040460)

Record envelope, standing records and threshold days for Mount Cotton Farm (ASN00040460), Australia, with 54 years of record.

Key Facts for Mount Cotton Farm

  • Mount Cotton Farm (ASN00040460) is a weather station in Australia at -27.61 latitude and 153.24 longitude, 56 m (184 ft) above sea level.
  • The station reports from 1966 to 2019, 54 years of record.
  • 0 records set at Mount Cotton Farm still stand.
  • Records are tracked for prcp: an element needs 30 years of data to be eligible.
  • Mount Cotton Farm set a daily record precipitation of 8.0 mm (0.31 in) on 20 September 2019.

About the Station

  • Location: Australia, -27.61 latitude, 153.24 longitude.
  • Elevation: 56 m (184 ft).
  • Period of record: 1966 to 2019, 54 years.
  • Eligible elements: prcp.

Daily Record Envelope and 2026

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

Wettest Day of Each Month

Jan: 417.0 mm (16.4 in)
Record daily precipitation for each month at Mount Cotton Farm The wettest day on record for each calendar month at Mount Cotton Farm. The most was 417.0 mm (16.4 in) on 26 January 1974. 0200400600 Jan: 417.0 mm (16.4 in), 26 January 1974 Jan Feb: 184.9 mm (7.3 in), 12 February 1972 Feb Mar: 140.0 mm (5.5 in), 31 March 2017 Mar Apr: 180.0 mm (7.1 in), 3 April 2009 Apr May: 163.0 mm (6.4 in), 1 May 2015 May Jun: 176.4 mm (6.9 in), 3 June 1974 Jun Jul: 189.0 mm (7.4 in), 9 July 1985 Jul Aug: 75.0 mm (3.0 in), 17 August 2014 Aug Sep: 68.5 mm (2.7 in), 5 September 2008 Sep Oct: 153.7 mm (6.1 in), 28 October 1972 Oct Nov: 213.1 mm (8.4 in), 8 November 1966 Nov Dec: 139.0 mm (5.5 in), 18 December 1999 Dec
The wettest day on record for each calendar month at Mount Cotton Farm. The most was 417.0 mm (16.4 in) on 26 January 1974.
Record daily precipitation for each month at Mount Cotton Farm
MonthRecord daily precipitation (mm)Date
Jan417.0 mm (16.4 in)26 January 1974
Feb184.9 mm (7.3 in)12 February 1972
Mar140.0 mm (5.5 in)31 March 2017
Apr180.0 mm (7.1 in)3 April 2009
May163.0 mm (6.4 in)1 May 2015
Jun176.4 mm (6.9 in)3 June 1974
Jul189.0 mm (7.4 in)9 July 1985
Aug75.0 mm (3.0 in)17 August 2014
Sep68.5 mm (2.7 in)5 September 2008
Oct153.7 mm (6.1 in)28 October 1972
Nov213.1 mm (8.4 in)8 November 1966
Dec139.0 mm (5.5 in)18 December 1999

Latest Records

20
Latest records at Mount Cotton Farm
DateStationRecordValueBeat old record byOld record stoodSignificance
20 September 2019Mount Cotton Farm, AUdaily rain8.0 mm (0.31 in)5.0 mm (0.20 in)33 years20 of 100 (Routine)
25 June 2019Mount Cotton Farm, AUdaily rain15.0 mm (0.6 in)8.8 mm (0.35 in)4 years9 of 100 (Routine)
17 November 2018Mount Cotton Farm, AUdaily rain20.0 mm (0.8 in)6.4 mm (0.25 in)39 years19 of 100 (Routine)
21 October 2018Mount Cotton Farm, AUdaily rain28.0 mm (1.1 in)0.8 mm (0.03 in)51 years20 of 100 (Routine)
16 October 2018Mount Cotton Farm, AUdaily rain30.0 mm (1.2 in)15.4 mm (0.6 in)32 years21 of 100 (Routine)
12 October 2018Mount Cotton Farm, AUdaily rain10.0 mm (0.4 in)2.5 mm (0.10 in)8 years8 of 100 (Routine)
4 September 2018Mount Cotton Farm, AUdaily rain20.0 mm (0.8 in)10.5 mm (0.4 in)9 years18 of 100 (Routine)
26 August 2018Mount Cotton Farm, AUdaily rain35.0 mm (1.4 in)17.0 mm (0.7 in)48 years33 of 100 (Routine)
20 April 2018Mount Cotton Farm, AUdaily rain35.0 mm (1.4 in)4.5 mm (0.18 in)48 years21 of 100 (Routine)
18 April 2018Mount Cotton Farm, AUdaily rain15.0 mm (0.6 in)5.5 mm (0.22 in)9 years9 of 100 (Routine)
6 March 2018Mount Cotton Farm, AUdaily rain35.0 mm (1.4 in)6.0 mm (0.24 in)8 years10 of 100 (Routine)
24 February 2018Mount Cotton Farm, AUdaily rain90.0 mm (3.5 in)27.6 mm (1.1 in)4 years18 of 100 (Routine)
15 October 2017Mount Cotton Farm, AUdaily rain80.0 mm (3.1 in)36.5 mm (1.4 in)18 years28 of 100 (Routine)
16 July 2017Mount Cotton Farm, AUdaily rain20.0 mm (0.8 in)4.0 mm (0.16 in)8 years8 of 100 (Routine)
16 June 2017Mount Cotton Farm, AUdaily rain32.0 mm (1.3 in)9.2 mm (0.36 in)22 years14 of 100 (Routine)
14 June 2017Mount Cotton Farm, AUdaily rain43.6 mm (1.7 in)34.7 mm (1.4 in)50 years34 of 100 (Routine)
13 May 2017Mount Cotton Farm, AUdaily rain32.0 mm (1.3 in)7.2 mm (0.28 in)24 years15 of 100 (Routine)
31 March 2017Mount Cotton Farm, AUmonthly rain140.0 mm (5.5 in)18.0 mm (0.7 in)43 years36 of 100 (Notable)
30 March 2017Mount Cotton Farm, AUdaily rain46.0 mm (1.8 in)34.6 mm (1.4 in)47 years37 of 100 (Notable)
26 November 2016Mount Cotton Farm, AUdaily rain64.7 mm (2.5 in)13.9 mm (0.5 in)36 years22 of 100 (Routine)

Extremes by Year

1966 to 2019
Yearly extremes at Mount Cotton Farm: the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Wettest day (Rx1day)417.0 mm (16.4 in)1974111.8 mm (4.4 in)54
Wettest five days (Rx5day)813.0 mm (32.0 in)1974186.8 mm (7.4 in)54
Longest dry spell (CDD)66 days201730 days54

Wettest day (Rx1day)

Wettest day (Rx1day) at Mount Cotton Farm by year The wettest day of the year at Mount Cotton Farm, 1966 to 2019. The record is 417.0 mm (16.4 in) in 1974, marked on the chart; the median year is 111.8 mm (4.4 in). 010020030040050019701980199020002010Record: 417.0 mm (16.4 in) in 1974
The wettest day of the year at Mount Cotton Farm, 1966 to 2019. The record is 417.0 mm (16.4 in) in 1974, marked on the chart; the median year is 111.8 mm (4.4 in).
Wettest day (Rx1day) at Mount Cotton Farm by year
YearWettest day (Rx1day)
1966213.1 mm (8.4 in)
1967175.3 mm (6.9 in)
196896.5 mm (3.8 in)
196967.8 mm (2.7 in)
1970111.3 mm (4.4 in)
197174.7 mm (2.9 in)
1972184.9 mm (7.3 in)
1973187.2 mm (7.4 in)
1974417.0 mm (16.4 in)
1975101.8 mm (4.0 in)
1976112.0 mm (4.4 in)
197751.4 mm (2.0 in)
1978106.0 mm (4.2 in)
197977.4 mm (3.0 in)
1980156.0 mm (6.1 in)
1981126.0 mm (5.0 in)
1982155.0 mm (6.1 in)
1983111.6 mm (4.4 in)
1984152.0 mm (6.0 in)
1985189.0 mm (7.4 in)
198667.0 mm (2.6 in)
1987106.0 mm (4.2 in)
1988131.6 mm (5.2 in)
1989129.0 mm (5.1 in)
1990148.0 mm (5.8 in)
1991133.0 mm (5.2 in)
199298.0 mm (3.9 in)
199358.5 mm (2.3 in)
1994108.0 mm (4.3 in)
199589.0 mm (3.5 in)
1996155.0 mm (6.1 in)
199758.0 mm (2.3 in)
1998113.0 mm (4.4 in)
1999139.0 mm (5.5 in)
200060.0 mm (2.4 in)
2001118.0 mm (4.6 in)
200247.8 mm (1.9 in)
200385.6 mm (3.4 in)
200497.1 mm (3.8 in)
2005167.6 mm (6.6 in)
200676.0 mm (3.0 in)
200750.5 mm (2.0 in)
200868.5 mm (2.7 in)
2009180.0 mm (7.1 in)
2010126.5 mm (5.0 in)
2011118.2 mm (4.7 in)
2012227.8 mm (9.0 in)
2013124.5 mm (4.9 in)
201490.0 mm (3.5 in)
2015163.0 mm (6.4 in)
201685.0 mm (3.3 in)
2017140.0 mm (5.5 in)
201890.0 mm (3.5 in)
201935.0 mm (1.4 in)

Wettest five days (Rx5day)

Wettest five days (Rx5day) at Mount Cotton Farm by year The wettest five days of the year at Mount Cotton Farm, 1966 to 2019. The record is 813.0 mm (32.0 in) in 1974, marked on the chart; the median year is 186.8 mm (7.4 in). 02004006008001,00019701980199020002010Record: 813.0 mm (32.0 in) in 1974
The wettest five days of the year at Mount Cotton Farm, 1966 to 2019. The record is 813.0 mm (32.0 in) in 1974, marked on the chart; the median year is 186.8 mm (7.4 in).
Wettest five days (Rx5day) at Mount Cotton Farm by year
YearWettest five days (Rx5day)
1966241.0 mm (9.5 in)
1967316.8 mm (12.5 in)
1968219.7 mm (8.6 in)
1969140.7 mm (5.5 in)
1970260.1 mm (10.2 in)
1971184.7 mm (7.3 in)
1972336.7 mm (13.3 in)
1973338.0 mm (13.3 in)
1974813.0 mm (32.0 in)
1975153.8 mm (6.1 in)
1976165.0 mm (6.5 in)
1977107.6 mm (4.2 in)
1978223.6 mm (8.8 in)
1979129.0 mm (5.1 in)
1980397.0 mm (15.6 in)
1981180.0 mm (7.1 in)
1982237.8 mm (9.4 in)
1983258.9 mm (10.2 in)
1984239.2 mm (9.4 in)
1985222.4 mm (8.8 in)
198682.0 mm (3.2 in)
1987128.5 mm (5.1 in)
1988244.3 mm (9.6 in)
1989191.8 mm (7.6 in)
1990191.4 mm (7.5 in)
1991222.0 mm (8.7 in)
1992174.0 mm (6.9 in)
199396.5 mm (3.8 in)
1994141.4 mm (5.6 in)
1995178.0 mm (7.0 in)
1996465.0 mm (18.3 in)
1997107.6 mm (4.2 in)
1998138.6 mm (5.5 in)
1999158.5 mm (6.2 in)
200069.0 mm (2.7 in)
2001188.8 mm (7.4 in)
200279.8 mm (3.1 in)
2003169.2 mm (6.7 in)
2004192.3 mm (7.6 in)
2005330.8 mm (13.0 in)
2006107.8 mm (4.2 in)
2007115.2 mm (4.5 in)
2008173.0 mm (6.8 in)
2009284.0 mm (11.2 in)
2010159.9 mm (6.3 in)
2011150.5 mm (5.9 in)
2012338.5 mm (13.3 in)
2013191.0 mm (7.5 in)
2014121.2 mm (4.8 in)
2015195.5 mm (7.7 in)
201693.6 mm (3.7 in)
2017189.0 mm (7.4 in)
2018199.0 mm (7.8 in)
201993.0 mm (3.7 in)

Longest dry spell (CDD)

Longest dry spell (CDD) at Mount Cotton Farm by year The longest dry spell of the year at Mount Cotton Farm, 1966 to 2019. The record is 66 days in 2017, marked on the chart; the median year is 30 days. 02040608019701980199020002010Record: 66 days in 2017
The longest dry spell of the year at Mount Cotton Farm, 1966 to 2019. The record is 66 days in 2017, marked on the chart; the median year is 30 days.
Longest dry spell (CDD) at Mount Cotton Farm by year
YearLongest dry spell (CDD)
196631 days
196736 days
196826 days
196937 days
197022 days
197136 days
197230 days
197320 days
197431 days
197532 days
197633 days
197733 days
197822 days
197927 days
198040 days
198130 days
198231 days
198321 days
198423 days
198527 days
198629 days
198743 days
198825 days
198928 days
199021 days
199151 days
199223 days
199327 days
199423 days
199536 days
199640 days
199716 days
199821 days
199924 days
200038 days
200139 days
200244 days
200332 days
200439 days
200522 days
200629 days
200726 days
200825 days
200946 days
20108 days
201123 days
201222 days
201340 days
201437 days
201521 days
201632 days
201766 days
201844 days
201966 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

46 years, 1966 to 2018

A day with at least 110.1 mm (4.3 in) of rain is expected about once in 2 years. A day with at least 320.4 mm (12.6 in) of rain is expected about once in 100 years.

Rainfall return levels at Mount Cotton Farm: the daily rain expected about once in a given number of years
Expected about once inA day with at leastNote
2 years110.1 mm (4.3 in)
5 years157.7 mm (6.2 in)
10 years192.5 mm (7.6 in)
25 years240.4 mm (9.5 in)
50 years279.1 mm (11.0 in)Longer than the 46 years of record
100 years320.4 mm (12.6 in)Longer than the 46 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, 46 years of values from 1966 to 2018.

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: 417.0 mm (16.4 in) in 1974; 213.1 mm (8.4 in) in 1966; 189.0 mm (7.4 in) in 1985.

Download the Data

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