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

Mount Helena Weather Records (ASN00009202)

Record envelope, standing records and threshold days for Mount Helena (ASN00009202), Australia, with 35 years of record.

Key Facts for Mount Helena

  • Mount Helena (ASN00009202) is a weather station in Australia at -31.83 latitude and 116.22 longitude, 300 m (984 ft) above sea level.
  • The station reports from 1986 to 2020, 35 years of record.
  • 0 records set at Mount Helena still stand.
  • Records are tracked for prcp: an element needs 30 years of data to be eligible.
  • Mount Helena set a daily record precipitation of 15.8 mm (0.6 in) on 2 November 2019.

About the Station

  • Location: Australia, -31.83 latitude, 116.22 longitude.
  • Elevation: 300 m (984 ft).
  • Period of record: 1986 to 2020, 35 years.
  • Eligible elements: prcp.

Daily Record Envelope and 2026

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

Wettest Day of Each Month

Jan: 132.4 mm (5.2 in)
Record daily precipitation for each month at Mount Helena The wettest day on record for each calendar month at Mount Helena. The most was 132.4 mm (5.2 in) on 29 January 1990. 050100150 Jan: 132.4 mm (5.2 in), 29 January 1990 Jan Feb: 64.2 mm (2.5 in), 10 February 2017 Feb Mar: 73.0 mm (2.9 in), 12 March 1990 Mar Apr: 47.0 mm (1.9 in), 12 April 2003 Apr May: 60.0 mm (2.4 in), 19 May 2005 May Jun: 50.0 mm (2.0 in), 1 June 1988 Jun Jul: 86.0 mm (3.4 in), 30 July 2001 Jul Aug: 64.0 mm (2.5 in), 11 August 1999 Aug Sep: 50.6 mm (2.0 in), 30 September 1991 Sep Oct: 67.4 mm (2.7 in), 18 October 1995 Oct Nov: 43.0 mm (1.7 in), 16 November 1996 Nov Dec: 41.0 mm (1.6 in), 25 December 1991 Dec
The wettest day on record for each calendar month at Mount Helena. The most was 132.4 mm (5.2 in) on 29 January 1990.
Record daily precipitation for each month at Mount Helena
MonthRecord daily precipitation (mm)Date
Jan132.4 mm (5.2 in)29 January 1990
Feb64.2 mm (2.5 in)10 February 2017
Mar73.0 mm (2.9 in)12 March 1990
Apr47.0 mm (1.9 in)12 April 2003
May60.0 mm (2.4 in)19 May 2005
Jun50.0 mm (2.0 in)1 June 1988
Jul86.0 mm (3.4 in)30 July 2001
Aug64.0 mm (2.5 in)11 August 1999
Sep50.6 mm (2.0 in)30 September 1991
Oct67.4 mm (2.7 in)18 October 1995
Nov43.0 mm (1.7 in)16 November 1996
Dec41.0 mm (1.6 in)25 December 1991

Latest Records

20
Latest records at Mount Helena
DateStationRecordValueBeat old record byOld record stoodSignificance
2 November 2019Mount Helena, AUdaily rain15.8 mm (0.6 in)4.6 mm (0.18 in)4 years10 of 100 (Routine)
31 October 2019Mount Helena, AUdaily rain25.2 mm (1.0 in)20.8 mm (0.8 in)32 years38 of 100 (Notable)
5 October 2019Mount Helena, AUdaily rain19.2 mm (0.8 in)10.6 mm (0.4 in)28 years20 of 100 (Routine)
19 September 2019Mount Helena, AUdaily rain20.6 mm (0.8 in)6.6 mm (0.26 in)2 years10 of 100 (Routine)
23 June 2019Mount Helena, AUdaily rain42.4 mm (1.7 in)17.4 mm (0.7 in)20 years24 of 100 (Routine)
11 June 2019Mount Helena, AUdaily rain40.6 mm (1.6 in)11.0 mm (0.4 in)14 years17 of 100 (Routine)
9 June 2019Mount Helena, AUdaily rain28.2 mm (1.1 in)3.2 mm (0.13 in)24 years12 of 100 (Routine)
19 April 2019Mount Helena, AUdaily rain16.0 mm (0.6 in)2.6 mm (0.10 in)9 years8 of 100 (Routine)
9 March 2019Mount Helena, AUdaily rain1.6 mm (0.06 in)1.0 mm (0.04 in)30 years12 of 100 (Routine)
24 January 2019Mount Helena, AUdaily rain8.6 mm (0.34 in)7.2 mm (0.28 in)16 years10 of 100 (Routine)
9 January 2019Mount Helena, AUdaily rain1.2 mm (0.05 in)1.2 mm (0.05 in)32 years12 of 100 (Routine)
4 August 2018Mount Helena, AUdaily rain56.0 mm (2.2 in)18.8 mm (0.7 in)24 years28 of 100 (Routine)
26 July 2018Mount Helena, AUdaily rain34.0 mm (1.3 in)8.0 mm (0.31 in)19 years15 of 100 (Routine)
26 May 2018Mount Helena, AUdaily rain39.4 mm (1.6 in)6.0 mm (0.24 in)20 years14 of 100 (Routine)
23 April 2018Mount Helena, AUdaily rain10.8 mm (0.4 in)1.8 mm (0.07 in)28 years13 of 100 (Routine)
26 February 2018Mount Helena, AUdaily rain13.0 mm (0.5 in)5.0 mm (0.20 in)27 years15 of 100 (Routine)
18 January 2018Mount Helena, AUdaily rain2.2 mm (0.09 in)2.2 mm (0.09 in)31 years13 of 100 (Routine)
16 January 2018Mount Helena, AUdaily rain89.2 mm (3.5 in)81.6 mm (3.2 in)18 years48 of 100 (Notable)
19 December 2017Mount Helena, AUdaily rain13.2 mm (0.5 in)11.4 mm (0.4 in)30 years20 of 100 (Routine)
18 December 2017Mount Helena, AUdaily rain29.0 mm (1.1 in)23.8 mm (0.9 in)10 years46 of 100 (Notable)

Extremes by Year

1986 to 2020
Yearly extremes at Mount Helena: the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Wettest day (Rx1day)132.4 mm (5.2 in)199048.0 mm (1.9 in)35
Wettest five days (Rx5day)187.0 mm (7.4 in)1996100.0 mm (3.9 in)35
Longest dry spell (CDD)86 days199440 days35

Wettest day (Rx1day)

Wettest day (Rx1day) at Mount Helena by year The wettest day of the year at Mount Helena, 1986 to 2020. The record is 132.4 mm (5.2 in) in 1990, marked on the chart; the median year is 48.0 mm (1.9 in). 0501001501990200020102020Record: 132.4 mm (5.2 in) in 1990
The wettest day of the year at Mount Helena, 1986 to 2020. The record is 132.4 mm (5.2 in) in 1990, marked on the chart; the median year is 48.0 mm (1.9 in).
Wettest day (Rx1day) at Mount Helena by year
YearWettest day (Rx1day)
198610.6 mm (0.4 in)
198775.0 mm (3.0 in)
198858.0 mm (2.3 in)
198947.2 mm (1.9 in)
1990132.4 mm (5.2 in)
199150.6 mm (2.0 in)
199238.0 mm (1.5 in)
199338.4 mm (1.5 in)
199442.0 mm (1.7 in)
199567.4 mm (2.7 in)
199650.0 mm (2.0 in)
199745.0 mm (1.8 in)
199846.0 mm (1.8 in)
199964.0 mm (2.5 in)
200048.0 mm (1.9 in)
200186.0 mm (3.4 in)
200234.6 mm (1.4 in)
200347.0 mm (1.9 in)
200450.0 mm (2.0 in)
200560.0 mm (2.4 in)
200635.6 mm (1.4 in)
200750.0 mm (2.0 in)
200842.0 mm (1.7 in)
200946.4 mm (1.8 in)
201037.0 mm (1.5 in)
201151.6 mm (2.0 in)
201262.4 mm (2.5 in)
201351.4 mm (2.0 in)
201449.4 mm (1.9 in)
201535.4 mm (1.4 in)
201638.8 mm (1.5 in)
201764.2 mm (2.5 in)
201889.2 mm (3.5 in)
201942.4 mm (1.7 in)
20201.6 mm (0.06 in)

Wettest five days (Rx5day)

Wettest five days (Rx5day) at Mount Helena by year The wettest five days of the year at Mount Helena, 1986 to 2020. The record is 187.0 mm (7.4 in) in 1996, marked on the chart; the median year is 100.0 mm (3.9 in). 0501001502001990200020102020Record: 187.0 mm (7.4 in) in 1996
The wettest five days of the year at Mount Helena, 1986 to 2020. The record is 187.0 mm (7.4 in) in 1996, marked on the chart; the median year is 100.0 mm (3.9 in).
Wettest five days (Rx5day) at Mount Helena by year
YearWettest five days (Rx5day)
198611.6 mm (0.5 in)
1987120.6 mm (4.7 in)
1988126.4 mm (5.0 in)
198961.4 mm (2.4 in)
1990138.4 mm (5.4 in)
199190.4 mm (3.6 in)
1992100.0 mm (3.9 in)
199375.0 mm (3.0 in)
1994103.2 mm (4.1 in)
1995124.0 mm (4.9 in)
1996187.0 mm (7.4 in)
199778.8 mm (3.1 in)
199893.4 mm (3.7 in)
199984.8 mm (3.3 in)
2000121.8 mm (4.8 in)
2001112.8 mm (4.4 in)
200279.2 mm (3.1 in)
2003122.8 mm (4.8 in)
200484.6 mm (3.3 in)
2005112.4 mm (4.4 in)
2006101.8 mm (4.0 in)
200796.2 mm (3.8 in)
200898.6 mm (3.9 in)
2009121.4 mm (4.8 in)
2010110.0 mm (4.3 in)
2011119.6 mm (4.7 in)
201284.0 mm (3.3 in)
201388.0 mm (3.5 in)
201484.4 mm (3.3 in)
201562.6 mm (2.5 in)
201684.7 mm (3.3 in)
2017107.2 mm (4.2 in)
2018116.0 mm (4.6 in)
2019136.0 mm (5.4 in)
20203.8 mm (0.15 in)

Longest dry spell (CDD)

Longest dry spell (CDD) at Mount Helena by year The longest dry spell of the year at Mount Helena, 1986 to 2020. The record is 86 days in 1994, marked on the chart; the median year is 40 days. 0204060801001990200020102020Record: 86 days in 1994
The longest dry spell of the year at Mount Helena, 1986 to 2020. The record is 86 days in 1994, marked on the chart; the median year is 40 days.
Longest dry spell (CDD) at Mount Helena by year
YearLongest dry spell (CDD)
198631 days
198773 days
198882 days
198938 days
199041 days
199155 days
199230 days
199339 days
199486 days
199553 days
199644 days
199739 days
199852 days
199956 days
200038 days
200138 days
200261 days
200326 days
200456 days
200544 days
200628 days
200719 days
200837 days
200942 days
201081 days
201140 days
201259 days
201335 days
201463 days
201537 days
201626 days
201739 days
201838 days
201943 days
202029 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

33 years, 1987 to 2019

A day with at least 48.1 mm (1.9 in) of rain is expected about once in 2 years. A day with at least 137.4 mm (5.4 in) of rain is expected about once in 100 years.

Rainfall return levels at Mount Helena: the daily rain expected about once in a given number of years
Expected about once inA day with at leastNote
2 years48.1 mm (1.9 in)
5 years62.5 mm (2.5 in)
10 years74.9 mm (2.9 in)
25 years95.1 mm (3.7 in)
50 years114.2 mm (4.5 in)Longer than the 33 years of record
100 years137.4 mm (5.4 in)Longer than the 33 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, 33 years of values from 1987 to 2019.

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: 132.4 mm (5.2 in) in 1990; 89.2 mm (3.5 in) in 2018; 86.0 mm (3.4 in) in 2001.

Download the Data

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