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

Boronia 1 Weather Records (ASN00086010)

Record envelope, standing records and threshold days for Boronia 1 (ASN00086010), Australia, with 43 years of record.

Key Facts for Boronia 1

  • Boronia 1 (ASN00086010) is a weather station in Australia at -37.85 latitude and 145.30 longitude, n/a above sea level.
  • The station reports from 1934 to 1976, 43 years of record.
  • 0 records set at Boronia 1 still stand.
  • Records are tracked for prcp: an element needs 30 years of data to be eligible.
  • Boronia 1 set a daily record precipitation of 12.0 mm (0.5 in) on 28 June 1976.

About the Station

  • Location: Australia, -37.85 latitude, 145.30 longitude.
  • Elevation: n/a.
  • Period of record: 1934 to 1976, 43 years.
  • Eligible elements: prcp.

Daily Record Envelope and 2026

0 days at or beyond a record
Daily record high and record low at Boronia 1, with 2026 drawn through them The band shows the record high and record low for each calendar day at Boronia 1. 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 Boronia 1. 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 Boronia 1, with 2026 drawn through them
MonthHighest record highLowest record low2026 highest maximum2026 lowest minimum
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Novn/an/an/an/a
Decn/an/an/an/a

Which Years Hold Standing Records

0 standing records
Standing records at Boronia 1 by the year they were set 0 records at Boronia 1 still stand. 00000000000
0 records at Boronia 1 still stand.
Standing records at Boronia 1 by the year they were set
Year setStanding records

Wettest Day of Each Month

Dec: 129.5 mm (5.1 in)
Record daily precipitation for each month at Boronia 1 The wettest day on record for each calendar month at Boronia 1. The most was 129.5 mm (5.1 in) on 1 December 1934. 050100150 Jan: 81.0 mm (3.2 in), 6 January 1935 Jan Feb: 109.5 mm (4.3 in), 26 February 1946 Feb Mar: 79.2 mm (3.1 in), 22 March 1970 Mar Apr: 70.4 mm (2.8 in), 23 April 1960 Apr May: 73.4 mm (2.9 in), 4 May 1944 May Jun: 71.4 mm (2.8 in), 5 June 1939 Jun Jul: 59.7 mm (2.4 in), 14 July 1952 Jul Aug: 46.4 mm (1.8 in), 12 August 1975 Aug Sep: 76.2 mm (3.0 in), 20 September 1959 Sep Oct: 77.7 mm (3.1 in), 19 October 1937 Oct Nov: 83.8 mm (3.3 in), 30 November 1934 Nov Dec: 129.5 mm (5.1 in), 1 December 1934 Dec
The wettest day on record for each calendar month at Boronia 1. The most was 129.5 mm (5.1 in) on 1 December 1934.
Record daily precipitation for each month at Boronia 1
MonthRecord daily precipitation (mm)Date
Jan81.0 mm (3.2 in)6 January 1935
Feb109.5 mm (4.3 in)26 February 1946
Mar79.2 mm (3.1 in)22 March 1970
Apr70.4 mm (2.8 in)23 April 1960
May73.4 mm (2.9 in)4 May 1944
Jun71.4 mm (2.8 in)5 June 1939
Jul59.7 mm (2.4 in)14 July 1952
Aug46.4 mm (1.8 in)12 August 1975
Sep76.2 mm (3.0 in)20 September 1959
Oct77.7 mm (3.1 in)19 October 1937
Nov83.8 mm (3.3 in)30 November 1934
Dec129.5 mm (5.1 in)1 December 1934

Latest Records

20
Latest records at Boronia 1
DateStationRecordValueBeat old record byOld record stoodSignificance
28 June 1976Boronia 1, AUdaily rain12.0 mm (0.5 in)2.6 mm (0.10 in)38 years19 of 100 (Routine)
1 March 1976Boronia 1, AUdaily rain23.4 mm (0.9 in)1.3 mm (0.05 in)29 years13 of 100 (Routine)
18 December 1975Boronia 1, AUdaily rain12.2 mm (0.5 in)2.8 mm (0.11 in)8 years8 of 100 (Routine)
4 December 1975Boronia 1, AUdaily rain22.6 mm (0.9 in)2.8 mm (0.11 in)33 years16 of 100 (Routine)
6 November 1975Boronia 1, AUdaily rain24.8 mm (1.0 in)4.5 mm (0.18 in)21 years14 of 100 (Routine)
26 October 1975Boronia 1, AUdaily rain30.0 mm (1.2 in)6.4 mm (0.25 in)33 years21 of 100 (Routine)
8 October 1975Boronia 1, AUdaily rain22.8 mm (0.9 in)1.2 mm (0.05 in)20 years11 of 100 (Routine)
28 September 1975Boronia 1, AUdaily rain9.8 mm (0.39 in)0.1 mm (0.00 in)10 years7 of 100 (Routine)
18 September 1975Boronia 1, AUdaily rain36.4 mm (1.4 in)27.0 mm (1.1 in)32 years51 of 100 (Notable)
4 September 1975Boronia 1, AUdaily rain10.8 mm (0.4 in)0.4 mm (0.02 in)40 years16 of 100 (Routine)
12 August 1975Boronia 1, AUmonthly rain46.4 mm (1.8 in)16.4 mm (0.6 in)13 years50 of 100 (Notable)
11 August 1975Boronia 1, AUdaily rain25.2 mm (1.0 in)7.4 mm (0.29 in)18 years23 of 100 (Routine)
3 August 1975Boronia 1, AUdaily rain19.6 mm (0.8 in)4.9 mm (0.19 in)37 years20 of 100 (Routine)
20 December 1974Boronia 1, AUdaily rain33.4 mm (1.3 in)3.9 mm (0.15 in)24 years14 of 100 (Routine)
17 October 1974Boronia 1, AUdaily rain18.2 mm (0.7 in)1.7 mm (0.07 in)36 years17 of 100 (Routine)
5 September 1974Boronia 1, AUdaily rain14.6 mm (0.6 in)0.6 mm (0.02 in)28 years12 of 100 (Routine)
27 August 1974Boronia 1, AUdaily rain13.4 mm (0.5 in)0.2 mm (0.01 in)35 years14 of 100 (Routine)
10 August 1974Boronia 1, AUdaily rain11.4 mm (0.4 in)0.5 mm (0.02 in)16 years10 of 100 (Routine)
7 August 1974Boronia 1, AUdaily rain8.4 mm (0.33 in)0.5 mm (0.02 in)35 years15 of 100 (Routine)
9 July 1974Boronia 1, AUdaily rain12.2 mm (0.5 in)4.1 mm (0.16 in)11 years13 of 100 (Routine)

Extremes by Year

1934 to 1976
Yearly extremes at Boronia 1: the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Wettest day (Rx1day)129.5 mm (5.1 in)193454.9 mm (2.2 in)43
Wettest five days (Rx5day)218.9 mm (8.6 in)193486.3 mm (3.4 in)43
Longest dry spell (CDD)39 days195618 days43

Wettest day (Rx1day)

Wettest day (Rx1day) at Boronia 1 by year The wettest day of the year at Boronia 1, 1934 to 1976. The record is 129.5 mm (5.1 in) in 1934, marked on the chart; the median year is 54.9 mm (2.2 in). 0501001501940195019601970Record: 129.5 mm (5.1 in) in 1934
The wettest day of the year at Boronia 1, 1934 to 1976. The record is 129.5 mm (5.1 in) in 1934, marked on the chart; the median year is 54.9 mm (2.2 in).
Wettest day (Rx1day) at Boronia 1 by year
YearWettest day (Rx1day)
1934129.5 mm (5.1 in)
193581.0 mm (3.2 in)
193632.0 mm (1.3 in)
193777.7 mm (3.1 in)
193847.0 mm (1.9 in)
193975.2 mm (3.0 in)
194029.2 mm (1.1 in)
194161.0 mm (2.4 in)
194266.5 mm (2.6 in)
194342.4 mm (1.7 in)
194473.4 mm (2.9 in)
194555.9 mm (2.2 in)
1946109.5 mm (4.3 in)
194746.0 mm (1.8 in)
194838.4 mm (1.5 in)
194974.7 mm (2.9 in)
195054.9 mm (2.2 in)
195182.6 mm (3.3 in)
195259.7 mm (2.4 in)
195364.8 mm (2.6 in)
195450.8 mm (2.0 in)
195557.2 mm (2.3 in)
195652.6 mm (2.1 in)
195749.5 mm (1.9 in)
195846.7 mm (1.8 in)
195976.2 mm (3.0 in)
196070.4 mm (2.8 in)
196138.9 mm (1.5 in)
196233.0 mm (1.3 in)
196373.2 mm (2.9 in)
196431.2 mm (1.2 in)
196546.0 mm (1.8 in)
196633.8 mm (1.3 in)
196730.5 mm (1.2 in)
196830.5 mm (1.2 in)
196938.6 mm (1.5 in)
197079.2 mm (3.1 in)
197161.0 mm (2.4 in)
197235.3 mm (1.4 in)
197378.2 mm (3.1 in)
197460.2 mm (2.4 in)
197546.4 mm (1.8 in)
197623.4 mm (0.9 in)

Wettest five days (Rx5day)

Wettest five days (Rx5day) at Boronia 1 by year The wettest five days of the year at Boronia 1, 1934 to 1976. The record is 218.9 mm (8.6 in) in 1934, marked on the chart; the median year is 86.3 mm (3.4 in). 0501001502002501940195019601970Record: 218.9 mm (8.6 in) in 1934
The wettest five days of the year at Boronia 1, 1934 to 1976. The record is 218.9 mm (8.6 in) in 1934, marked on the chart; the median year is 86.3 mm (3.4 in).
Wettest five days (Rx5day) at Boronia 1 by year
YearWettest five days (Rx5day)
1934218.9 mm (8.6 in)
1935103.4 mm (4.1 in)
193673.5 mm (2.9 in)
1937171.9 mm (6.8 in)
193849.3 mm (1.9 in)
1939150.2 mm (5.9 in)
194061.8 mm (2.4 in)
194175.9 mm (3.0 in)
194286.3 mm (3.4 in)
194348.6 mm (1.9 in)
1944132.3 mm (5.2 in)
194566.4 mm (2.6 in)
1946150.7 mm (5.9 in)
194774.2 mm (2.9 in)
194885.2 mm (3.4 in)
1949109.5 mm (4.3 in)
195067.6 mm (2.7 in)
1951146.9 mm (5.8 in)
1952118.7 mm (4.7 in)
195397.7 mm (3.8 in)
195492.5 mm (3.6 in)
195582.0 mm (3.2 in)
1956100.0 mm (3.9 in)
195794.9 mm (3.7 in)
195871.2 mm (2.8 in)
1959105.4 mm (4.1 in)
1960146.4 mm (5.8 in)
196153.7 mm (2.1 in)
196271.5 mm (2.8 in)
1963107.0 mm (4.2 in)
196457.3 mm (2.3 in)
196598.1 mm (3.9 in)
196684.0 mm (3.3 in)
196747.1 mm (1.9 in)
196862.8 mm (2.5 in)
196967.0 mm (2.6 in)
1970186.9 mm (7.4 in)
1971143.0 mm (5.6 in)
197268.9 mm (2.7 in)
1973115.6 mm (4.6 in)
1974105.0 mm (4.1 in)
197575.0 mm (3.0 in)
197634.0 mm (1.3 in)

Longest dry spell (CDD)

Longest dry spell (CDD) at Boronia 1 by year The longest dry spell of the year at Boronia 1, 1934 to 1976. The record is 39 days in 1956, marked on the chart; the median year is 18 days. 0102030401940195019601970Record: 39 days in 1956
The longest dry spell of the year at Boronia 1, 1934 to 1976. The record is 39 days in 1956, marked on the chart; the median year is 18 days.
Longest dry spell (CDD) at Boronia 1 by year
YearLongest dry spell (CDD)
19347 days
193518 days
193624 days
193724 days
193820 days
193930 days
194020 days
194116 days
194216 days
194316 days
194415 days
194512 days
194610 days
194713 days
194819 days
194914 days
195024 days
195119 days
195222 days
195317 days
195418 days
195518 days
195639 days
195714 days
195817 days
195925 days
196015 days
196122 days
196216 days
196327 days
196415 days
196524 days
196616 days
196717 days
196826 days
196913 days
197022 days
197118 days
197220 days
197311 days
197431 days
197516 days
197615 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

41 years, 1935 to 1975

A day with at least 54.2 mm (2.1 in) of rain is expected about once in 2 years. A day with at least 106.9 mm (4.2 in) of rain is expected about once in 100 years.

Rainfall return levels at Boronia 1: the daily rain expected about once in a given number of years
Expected about once inA day with at leastNote
2 years54.2 mm (2.1 in)
5 years71.5 mm (2.8 in)
10 years81.5 mm (3.2 in)
25 years92.8 mm (3.7 in)
50 years100.2 mm (3.9 in)Longer than the 41 years of record
100 years106.9 mm (4.2 in)Longer than the 41 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, 41 years of values from 1935 to 1975.

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: 109.5 mm (4.3 in) in 1946; 82.6 mm (3.3 in) in 1951; 81.0 mm (3.2 in) in 1935.

Download the Data

  • Data for Boronia 1 standing records by year: CSV or JSON. Field meanings are on the data page.
  • Data for Boronia 1 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).