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Built 2026-10-15 (15 October 2026)

Glenlyon Dam Weather Records (ASN00041430)

Record envelope, standing records and threshold days for Glenlyon Dam (ASN00041430), Australia, with 53 years of record.

Key Facts for Glenlyon Dam

  • Glenlyon Dam (ASN00041430) is a weather station in Australia at -28.97 latitude and 151.47 longitude, 438 m (1,437 ft) above sea level.
  • The station reports from 1974 to 2026, 53 years of record.
  • 0 records set at Glenlyon Dam still stand.
  • Records are tracked for prcp: an element needs 30 years of data to be eligible.
  • Glenlyon Dam set a daily record precipitation of 25.5 mm (1.0 in) on 20 May 2026.

About the Station

  • Location: Australia, -28.97 latitude, 151.47 longitude.
  • Elevation: 438 m (1,437 ft).
  • Period of record: 1974 to 2026, 53 years.
  • Eligible elements: prcp.

Daily Record Envelope and 2026

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

Wettest Day of Each Month

Feb: 166.4 mm (6.6 in)
Record daily precipitation for each month at Glenlyon Dam The wettest day on record for each calendar month at Glenlyon Dam. The most was 166.4 mm (6.6 in) on 11 February 1976. 050100150200 Jan: 152.2 mm (6.0 in), 3 January 1996 Jan Feb: 166.4 mm (6.6 in), 11 February 1976 Feb Mar: 118.0 mm (4.6 in), 2 March 2013 Mar Apr: 90.9 mm (3.6 in), 1 April 1988 Apr May: 58.0 mm (2.3 in), 22 May 2009 May Jun: 50.0 mm (2.0 in), 1 June 1981 Jun Jul: 43.0 mm (1.7 in), 28 July 1998 Jul Aug: 42.6 mm (1.7 in), 16 August 1998 Aug Sep: 56.0 mm (2.2 in), 9 September 2004 Sep Oct: 72.0 mm (2.8 in), 2 October 2003 Oct Nov: 86.0 mm (3.4 in), 4 November 2006 Nov Dec: 90.8 mm (3.6 in), 11 December 1984 Dec
The wettest day on record for each calendar month at Glenlyon Dam. The most was 166.4 mm (6.6 in) on 11 February 1976.
Record daily precipitation for each month at Glenlyon Dam
MonthRecord daily precipitation (mm)Date
Jan152.2 mm (6.0 in)3 January 1996
Feb166.4 mm (6.6 in)11 February 1976
Mar118.0 mm (4.6 in)2 March 2013
Apr90.9 mm (3.6 in)1 April 1988
May58.0 mm (2.3 in)22 May 2009
Jun50.0 mm (2.0 in)1 June 1981
Jul43.0 mm (1.7 in)28 July 1998
Aug42.6 mm (1.7 in)16 August 1998
Sep56.0 mm (2.2 in)9 September 2004
Oct72.0 mm (2.8 in)2 October 2003
Nov86.0 mm (3.4 in)4 November 2006
Dec90.8 mm (3.6 in)11 December 1984

Latest Records

20
Latest records at Glenlyon Dam
DateStationRecordValueBeat old record byOld record stoodSignificance
20 May 2026Glenlyon Dam, AUdaily rain25.5 mm (1.0 in)12.1 mm (0.5 in)24 years22 of 100 (Routine)
16 November 2025Glenlyon Dam, AUdaily rain25.5 mm (1.0 in)6.9 mm (0.27 in)42 years22 of 100 (Routine)
15 November 2025Glenlyon Dam, AUdaily rain20.5 mm (0.8 in)5.5 mm (0.22 in)24 years16 of 100 (Routine)
20 September 2025Glenlyon Dam, AUdaily rain25.0 mm (1.0 in)4.6 mm (0.18 in)15 years14 of 100 (Routine)
11 September 2025Glenlyon Dam, AUdaily rain18.8 mm (0.7 in)8.8 mm (0.35 in)27 years20 of 100 (Routine)
22 August 2025Glenlyon Dam, AUdaily rain21.0 mm (0.8 in)8.6 mm (0.34 in)23 years20 of 100 (Routine)
2 August 2025Glenlyon Dam, AUdaily rain12.2 mm (0.5 in)0.9 mm (0.04 in)32 years15 of 100 (Routine)
27 July 2025Glenlyon Dam, AUdaily rain37.0 mm (1.5 in)2.8 mm (0.11 in)24 years15 of 100 (Routine)
18 July 2025Glenlyon Dam, AUdaily rain26.4 mm (1.0 in)0.2 mm (0.01 in)39 years16 of 100 (Routine)
25 June 2025Glenlyon Dam, AUdaily rain13.6 mm (0.5 in)3.2 mm (0.13 in)35 years19 of 100 (Routine)
3 June 2025Glenlyon Dam, AUdaily rain33.6 mm (1.3 in)3.6 mm (0.14 in)15 years13 of 100 (Routine)
31 May 2025Glenlyon Dam, AUdaily rain8.5 mm (0.33 in)3.5 mm (0.14 in)28 years16 of 100 (Routine)
22 April 2025Glenlyon Dam, AUdaily rain23.6 mm (0.9 in)0.9 mm (0.04 in)32 years14 of 100 (Routine)
11 March 2025Glenlyon Dam, AUdaily rain38.0 mm (1.5 in)10.4 mm (0.4 in)43 years24 of 100 (Routine)
1 January 2025Glenlyon Dam, AUdaily rain26.2 mm (1.0 in)11.2 mm (0.4 in)3 years11 of 100 (Routine)
12 November 2024Glenlyon Dam, AUdaily rain65.8 mm (2.6 in)40.0 mm (1.6 in)35 years49 of 100 (Notable)
26 May 2024Glenlyon Dam, AUdaily rain19.8 mm (0.8 in)1.8 mm (0.07 in)20 years12 of 100 (Routine)
17 May 2024Glenlyon Dam, AUdaily rain19.8 mm (0.8 in)1.4 mm (0.06 in)27 years14 of 100 (Routine)
7 April 2024Glenlyon Dam, AUdaily rain44.0 mm (1.7 in)31.5 mm (1.2 in)36 years44 of 100 (Notable)
19 January 2024Glenlyon Dam, AUdaily rain63.0 mm (2.5 in)28.8 mm (1.1 in)34 years31 of 100 (Routine)

Extremes by Year

1974 to 2026
Yearly extremes at Glenlyon Dam: the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Wettest day (Rx1day)166.4 mm (6.6 in)197659.0 mm (2.3 in)53
Wettest five days (Rx5day)191.8 mm (7.6 in)197689.0 mm (3.5 in)53
Longest dry spell (CDD)77 days198929 days53

Wettest day (Rx1day)

Wettest day (Rx1day) at Glenlyon Dam by year The wettest day of the year at Glenlyon Dam, 1974 to 2026. The record is 166.4 mm (6.6 in) in 1976, marked on the chart; the median year is 59.0 mm (2.3 in). 05010015020019801990200020102020Record: 166.4 mm (6.6 in) in 1976
The wettest day of the year at Glenlyon Dam, 1974 to 2026. The record is 166.4 mm (6.6 in) in 1976, marked on the chart; the median year is 59.0 mm (2.3 in).
Wettest day (Rx1day) at Glenlyon Dam by year
YearWettest day (Rx1day)
197445.6 mm (1.8 in)
197582.0 mm (3.2 in)
1976166.4 mm (6.6 in)
197790.8 mm (3.6 in)
197851.2 mm (2.0 in)
197960.5 mm (2.4 in)
198074.4 mm (2.9 in)
198172.0 mm (2.8 in)
198255.2 mm (2.2 in)
198356.0 mm (2.2 in)
198490.8 mm (3.6 in)
198530.6 mm (1.2 in)
198645.6 mm (1.8 in)
198779.4 mm (3.1 in)
198890.9 mm (3.6 in)
198942.8 mm (1.7 in)
199032.6 mm (1.3 in)
199163.2 mm (2.5 in)
199253.4 mm (2.1 in)
199339.6 mm (1.6 in)
199457.2 mm (2.3 in)
199533.0 mm (1.3 in)
1996152.2 mm (6.0 in)
199760.6 mm (2.4 in)
199859.7 mm (2.4 in)
199963.8 mm (2.5 in)
200054.8 mm (2.2 in)
200167.2 mm (2.6 in)
200263.0 mm (2.5 in)
200372.0 mm (2.8 in)
200456.0 mm (2.2 in)
200576.0 mm (3.0 in)
200686.0 mm (3.4 in)
200756.6 mm (2.2 in)
200843.2 mm (1.7 in)
200976.0 mm (3.0 in)
201035.6 mm (1.4 in)
201149.0 mm (1.9 in)
201239.0 mm (1.5 in)
2013118.0 mm (4.6 in)
201461.0 mm (2.4 in)
201598.0 mm (3.9 in)
201669.8 mm (2.7 in)
201740.6 mm (1.6 in)
201844.0 mm (1.7 in)
201926.9 mm (1.1 in)
202073.5 mm (2.9 in)
202158.0 mm (2.3 in)
202259.0 mm (2.3 in)
202342.0 mm (1.7 in)
202465.8 mm (2.6 in)
202538.0 mm (1.5 in)
202625.5 mm (1.0 in)

Wettest five days (Rx5day)

Wettest five days (Rx5day) at Glenlyon Dam by year The wettest five days of the year at Glenlyon Dam, 1974 to 2026. The record is 191.8 mm (7.6 in) in 1976, marked on the chart; the median year is 89.0 mm (3.5 in). 05010015020019801990200020102020Record: 191.8 mm (7.6 in) in 1976
The wettest five days of the year at Glenlyon Dam, 1974 to 2026. The record is 191.8 mm (7.6 in) in 1976, marked on the chart; the median year is 89.0 mm (3.5 in).
Wettest five days (Rx5day) at Glenlyon Dam by year
YearWettest five days (Rx5day)
197489.0 mm (3.5 in)
1975145.4 mm (5.7 in)
1976191.8 mm (7.6 in)
1977113.8 mm (4.5 in)
197867.4 mm (2.7 in)
197975.1 mm (3.0 in)
198086.0 mm (3.4 in)
1981104.2 mm (4.1 in)
198291.2 mm (3.6 in)
1983110.3 mm (4.3 in)
1984142.0 mm (5.6 in)
198554.4 mm (2.1 in)
198651.8 mm (2.0 in)
1987104.6 mm (4.1 in)
1988132.5 mm (5.2 in)
1989100.2 mm (3.9 in)
199065.1 mm (2.6 in)
199182.9 mm (3.3 in)
199282.0 mm (3.2 in)
199357.0 mm (2.2 in)
199472.4 mm (2.9 in)
199580.4 mm (3.2 in)
1996184.4 mm (7.3 in)
199781.8 mm (3.2 in)
1998137.6 mm (5.4 in)
1999110.8 mm (4.4 in)
200071.6 mm (2.8 in)
2001170.2 mm (6.7 in)
200298.0 mm (3.9 in)
200388.4 mm (3.5 in)
2004116.5 mm (4.6 in)
200584.3 mm (3.3 in)
2006148.5 mm (5.8 in)
200775.2 mm (3.0 in)
200892.8 mm (3.7 in)
2009147.4 mm (5.8 in)
2010133.4 mm (5.3 in)
201172.0 mm (2.8 in)
201253.6 mm (2.1 in)
201389.8 mm (3.5 in)
201432.6 mm (1.3 in)
2015141.6 mm (5.6 in)
201689.0 mm (3.5 in)
201762.6 mm (2.5 in)
201859.0 mm (2.3 in)
201929.0 mm (1.1 in)
202091.5 mm (3.6 in)
202196.5 mm (3.8 in)
202267.2 mm (2.6 in)
202360.0 mm (2.4 in)
202491.0 mm (3.6 in)
202560.0 mm (2.4 in)
202629.2 mm (1.1 in)

Longest dry spell (CDD)

Longest dry spell (CDD) at Glenlyon Dam by year The longest dry spell of the year at Glenlyon Dam, 1974 to 2026. The record is 77 days in 1989, marked on the chart; the median year is 29 days. 02040608019801990200020102020Record: 77 days in 1989
The longest dry spell of the year at Glenlyon Dam, 1974 to 2026. The record is 77 days in 1989, marked on the chart; the median year is 29 days.
Longest dry spell (CDD) at Glenlyon Dam by year
YearLongest dry spell (CDD)
197421 days
197555 days
197624 days
197729 days
197828 days
197930 days
198052 days
198145 days
198229 days
198326 days
198434 days
198526 days
198644 days
198738 days
198821 days
198977 days
199023 days
199149 days
199242 days
199346 days
199428 days
199546 days
199645 days
199728 days
199856 days
199924 days
200037 days
200129 days
200226 days
200338 days
200440 days
200540 days
200640 days
200737 days
200824 days
200934 days
201013 days
201120 days
201227 days
201329 days
201426 days
201528 days
201638 days
201722 days
201838 days
201940 days
202026 days
202126 days
202225 days
202325 days
202469 days
202521 days
202660 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, 1975 to 2025

A day with at least 59.0 mm (2.3 in) of rain is expected about once in 2 years. A day with at least 154.5 mm (6.1 in) of rain is expected about once in 100 years.

Rainfall return levels at Glenlyon Dam: the daily rain expected about once in a given number of years
Expected about once inA day with at leastNote
2 years59.0 mm (2.3 in)
5 years81.1 mm (3.2 in)
10 years97.1 mm (3.8 in)
25 years118.8 mm (4.7 in)
50 years136.2 mm (5.4 in)Longer than the 46 years of record
100 years154.5 mm (6.1 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 1975 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: 166.4 mm (6.6 in) in 1976; 152.2 mm (6.0 in) in 1996; 98.0 mm (3.9 in) in 2015.

Download the Data

  • Data for Glenlyon Dam standing records by year: CSV or JSON. Field meanings are on the data page.
  • Data for Glenlyon Dam 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 (2026-10-12).