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Lucas Heights (Ansto) Weather Records (ASN00066078)

Record envelope, standing records and threshold days for Lucas Heights (Ansto) (ASN00066078), Australia, with 69 years of record.

Key Facts for Lucas Heights (Ansto)

  • Lucas Heights (Ansto) (ASN00066078) is a weather station in Australia at -34.05 latitude and 150.98 longitude, 140 m (459 ft) above sea level.
  • The station reports from 1958 to 2026, 69 years of record.
  • 1,464 records set at Lucas Heights (Ansto) still stand.
  • Records are tracked for prcp: an element needs 30 years of data to be eligible.
  • Lucas Heights (Ansto) set a daily record precipitation of 38.4 mm (1.5 in) on 29 May 2026.

About the Station

  • Location: Australia, -34.05 latitude, 150.98 longitude.
  • Elevation: 140 m (459 ft).
  • Period of record: 1958 to 2026, 69 years.
  • Eligible elements: prcp.

Daily Record Envelope and 2026

0 days at or beyond a record
Daily record high and record low at Lucas Heights (Ansto), with 2026 drawn through them The band shows the record high and record low for each calendar day at Lucas Heights (Ansto). The lines show the 2026 daily maximum and minimum. 0 days in 2026 matched or passed a record. Temperatures are in degrees Celsius. -1001020304050 JanFebMarAprMayJunJulAugSepOctNovDec
The band shows the record high and record low for each calendar day at Lucas Heights (Ansto). 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 Lucas Heights (Ansto), with 2026 drawn through them
MonthHighest record highLowest record low2026 highest maximum2026 lowest minimum
Jan41.2 C (106.2 F)10.9 C (51.6 F)n/an/a
Feb42.0 C (107.6 F)11.1 C (52.0 F)n/an/a
Mar39.8 C (103.6 F)8.4 C (47.1 F)n/an/a
Apr32.4 C (90.3 F)5.6 C (42.1 F)n/an/a
May26.9 C (80.4 F)4.3 C (39.7 F)n/an/a
Jun23.5 C (74.3 F)-0.5 C (31.1 F)n/an/a
Jul24.0 C (75.2 F)-0.6 C (30.9 F)n/an/a
Aug28.0 C (82.4 F)1.6 C (34.9 F)n/an/a
Sep34.4 C (93.9 F)3.1 C (37.6 F)n/an/a
Oct34.0 C (93.2 F)3.5 C (38.3 F)n/an/a
Nov41.5 C (106.7 F)6.8 C (44.2 F)n/an/a
Dec40.0 C (104.0 F)8.8 C (47.8 F)n/an/a

Which Years Hold Standing Records

1,464 standing records
Standing records at Lucas Heights (Ansto) by the year they were set 1,464 records at Lucas Heights (Ansto) still stand. 1965 holds the most, with 104. 0501001501962: 581963: 731964: 711965: 1041966: 821967: 881968: 701969: 611970: 761971: 471972: 601973: 671974: 541975: 761976: 511977: 781978: 811979: 651980: 691981: 631982: 701962196519681971197419771980
1,464 records at Lucas Heights (Ansto) still stand. 1965 holds the most, with 104.
Standing records at Lucas Heights (Ansto) by the year they were set
Year setStanding records
196258
196373
196471
1965104
196682
196788
196870
196961
197076
197147
197260
197367
197454
197576
197651
197778
197881
197965
198069
198163
198270

All-Time Record Progression

3 new records
When Lucas Heights (Ansto) set new all-time records 3 all-time records were set at Lucas Heights (Ansto) between 3 February 1990 and 3 July 2022. Each dot is a new record. Record daily precipitation3 February 1990: Record daily precipitation 170.0 mm (6.7 in)11 June 1991: Record daily precipitation 232.6 mm (9.2 in)3 July 2022: Record daily precipitation 247.2 mm (9.7 in)1990199520002005201020152020
3 all-time records were set at Lucas Heights (Ansto) between 3 February 1990 and 3 July 2022. Each dot is a new record.
When Lucas Heights (Ansto) set new all-time records
DateKindDetail
1990-02-03Record daily precipitationRecord daily precipitation 170.0 mm (6.7 in)
1991-06-11Record daily precipitationRecord daily precipitation 232.6 mm (9.2 in)
2022-07-03Record daily precipitationRecord daily precipitation 247.2 mm (9.7 in)

Wettest Day of Each Month

Jul: 247.2 mm (9.7 in)
Record daily precipitation for each month at Lucas Heights (Ansto) The wettest day on record for each calendar month at Lucas Heights (Ansto). The most was 247.2 mm (9.7 in) on 3 July 2022. 0100200300 Jan: 147.0 mm (5.8 in), 31 January 2001 Jan Feb: 170.0 mm (6.7 in), 3 February 1990 Feb Mar: 140.6 mm (5.5 in), 10 March 1975 Mar Apr: 160.0 mm (6.3 in), 16 April 1969 Apr May: 137.2 mm (5.4 in), 14 May 1962 May Jun: 232.6 mm (9.2 in), 11 June 1991 Jun Jul: 247.2 mm (9.7 in), 3 July 2022 Jul Aug: 169.9 mm (6.7 in), 30 August 1963 Aug Sep: 148.4 mm (5.8 in), 25 September 1995 Sep Oct: 103.2 mm (4.1 in), 24 October 1999 Oct Nov: 156.0 mm (6.1 in), 9 November 1984 Nov Dec: 111.3 mm (4.4 in), 9 December 1970 Dec
The wettest day on record for each calendar month at Lucas Heights (Ansto). The most was 247.2 mm (9.7 in) on 3 July 2022.
Record daily precipitation for each month at Lucas Heights (Ansto)
MonthRecord daily precipitation (mm)Date
Jan147.0 mm (5.8 in)31 January 2001
Feb170.0 mm (6.7 in)3 February 1990
Mar140.6 mm (5.5 in)10 March 1975
Apr160.0 mm (6.3 in)16 April 1969
May137.2 mm (5.4 in)14 May 1962
Jun232.6 mm (9.2 in)11 June 1991
Jul247.2 mm (9.7 in)3 July 2022
Aug169.9 mm (6.7 in)30 August 1963
Sep148.4 mm (5.8 in)25 September 1995
Oct103.2 mm (4.1 in)24 October 1999
Nov156.0 mm (6.1 in)9 November 1984
Dec111.3 mm (4.4 in)9 December 1970

Period of Record Coverage

1962 to 1982
Days with data per year at Lucas Heights (Ansto) 21 years of record at Lucas Heights (Ansto), 1962 to 1982. 2 years have data for under 90 percent of days and are left out of rankings: 1968, 1969. 1962: 360 of 365 days1963: 363 of 365 days1964: 366 of 366 days1965: 364 of 365 days1966: 365 of 365 days1967: 365 of 365 days1968: 274 of 366 days1969: 328 of 365 days1970: 356 of 365 days1971: 364 of 365 days1972: 363 of 366 days1973: 364 of 365 days1974: 362 of 365 days1975: 365 of 365 days1976: 362 of 366 days1977: 364 of 365 days1978: 364 of 365 days1979: 365 of 365 days1980: 366 of 366 days1981: 365 of 365 days1982: 364 of 365 days1965197019751980
21 years of record at Lucas Heights (Ansto), 1962 to 1982. 2 years have data for under 90 percent of days and are left out of rankings: 1968, 1969.
Days with data per year at Lucas Heights (Ansto)
YearDays with dataShare of yearComplete
196236099%Yes
196336399%Yes
1964366100%Yes
1965364100%Yes
1966365100%Yes
1967365100%Yes
196827475%No
196932890%No
197035698%Yes
1971364100%Yes
197236399%Yes
1973364100%Yes
197436299%Yes
1975365100%Yes
197636299%Yes
1977364100%Yes
1978364100%Yes
1979365100%Yes
1980366100%Yes
1981365100%Yes
1982364100%Yes

Latest Records

20
Latest records at Lucas Heights (Ansto)
DateStationRecordValueBeat old record byOld record stoodSignificance
29 May 2026Lucas Heights (Ansto), AUdaily rain38.4 mm (1.5 in)9.2 mm (0.36 in)45 years25 of 100 (Routine)
27 February 2026Lucas Heights (Ansto), AUdaily rain93.4 mm (3.7 in)5.4 mm (0.21 in)20 years14 of 100 (Routine)
18 January 2026Lucas Heights (Ansto), AUdaily rain70.0 mm (2.8 in)38.2 mm (1.5 in)24 years39 of 100 (Notable)
11 September 2025Lucas Heights (Ansto), AUdaily rain94.8 mm (3.7 in)67.2 mm (2.6 in)19 years51 of 100 (Notable)
21 August 2025Lucas Heights (Ansto), AUdaily rain38.0 mm (1.5 in)25.3 mm (1.0 in)64 years37 of 100 (Notable)
31 July 2025Lucas Heights (Ansto), AUdaily rain26.0 mm (1.0 in)18.0 mm (0.7 in)35 years25 of 100 (Routine)
2 July 2025Lucas Heights (Ansto), AUdaily rain65.6 mm (2.6 in)40.0 mm (1.6 in)0 years26 of 100 (Routine)
23 May 2025Lucas Heights (Ansto), AUdaily rain94.2 mm (3.7 in)50.8 mm (2.0 in)44 years55 of 100 (Notable)
30 November 2024Lucas Heights (Ansto), AUdaily rain54.0 mm (2.1 in)28.0 mm (1.1 in)19 years29 of 100 (Routine)
2 July 2024Lucas Heights (Ansto), AUdaily rain25.6 mm (1.0 in)3.8 mm (0.15 in)25 years14 of 100 (Routine)
7 June 2024Lucas Heights (Ansto), AUdaily rain43.4 mm (1.7 in)21.0 mm (0.8 in)33 years25 of 100 (Routine)
11 May 2024Lucas Heights (Ansto), AUdaily rain21.3 mm (0.8 in)5.3 mm (0.21 in)62 years20 of 100 (Routine)
6 April 2024Lucas Heights (Ansto), AUdaily rain157.2 mm (6.2 in)123.8 mm (4.9 in)34 years56 of 100 (Notable)
6 February 2024Lucas Heights (Ansto), AUdaily rain50.4 mm (2.0 in)22.6 mm (0.9 in)21 years24 of 100 (Routine)
25 December 2023Lucas Heights (Ansto), AUdaily rain53.0 mm (2.1 in)19.0 mm (0.7 in)60 years39 of 100 (Notable)
17 November 2023Lucas Heights (Ansto), AUdaily rain27.2 mm (1.1 in)0.6 mm (0.02 in)34 years16 of 100 (Routine)
5 November 2023Lucas Heights (Ansto), AUdaily rain48.6 mm (1.9 in)20.0 mm (0.8 in)8 years21 of 100 (Routine)
28 September 2023Lucas Heights (Ansto), AUdaily rain27.2 mm (1.1 in)1.6 mm (0.06 in)40 years19 of 100 (Routine)
22 February 2023Lucas Heights (Ansto), AUdaily rain43.2 mm (1.7 in)14.8 mm (0.6 in)39 years24 of 100 (Routine)
7 January 2023Lucas Heights (Ansto), AUdaily rain44.2 mm (1.7 in)16.2 mm (0.6 in)0 years16 of 100 (Routine)

Climate Trend

18 complete years, 1962 to 1982
Annual mean temperature at Lucas Heights (Ansto) as warming stripes, 1962 to 1982 One stripe for each of 18 complete years at Lucas Heights (Ansto), 1962 to 1982. Blue stripes are years cooler than the station's own mean of 16.9 C (62.4 F); red stripes are warmer. The coolest year was 1966, at 16.4 C (61.5 F), and the warmest was 1980, at 17.6 C (63.7 F). The strongest colour marks a difference of 0.8 C (1.4 F). 1962: 16.5 C, -0.3 C from the station mean1963: 16.8 C, -0.1 C from the station mean1964: 16.9 C, 0.0 C from the station mean1965: 17.0 C, +0.1 C from the station mean1966: 16.4 C, -0.5 C from the station mean1967: 16.8 C, -0.1 C from the station mean1970: 16.5 C, -0.4 C from the station mean1971: 16.6 C, -0.2 C from the station mean1973: 17.4 C, +0.5 C from the station mean1974: 16.5 C, -0.3 C from the station mean1975: 17.0 C, +0.1 C from the station mean1976: 16.5 C, -0.3 C from the station mean1977: 17.1 C, +0.2 C from the station mean1978: 16.7 C, -0.2 C from the station mean1979: 17.4 C, +0.5 C from the station mean1980: 17.6 C, +0.8 C from the station mean1981: 17.0 C, +0.1 C from the station mean1982: 16.9 C, +0.1 C from the station mean19621964196619681970197219741976197819801982
One stripe for each of 18 complete years at Lucas Heights (Ansto), 1962 to 1982. Blue stripes are years cooler than the station's own mean of 16.9 C (62.4 F); red stripes are warmer. The coolest year was 1966, at 16.4 C (61.5 F), and the warmest was 1980, at 17.6 C (63.7 F). The strongest colour marks a difference of 0.8 C (1.4 F).
Annual mean temperature at Lucas Heights (Ansto) as warming stripes, 1962 to 1982
YearAnnual mean temperatureDifference from the station mean
196216.5 C-0.34 C
196316.8 C-0.05 C
196416.9 C0.00 C
196517.0 C+0.15 C
196616.4 C-0.47 C
196716.8 C-0.11 C
197016.5 C-0.40 C
197116.6 C-0.23 C
197317.4 C+0.54 C
197416.5 C-0.34 C
197517.0 C+0.14 C
197616.5 C-0.34 C
197717.1 C+0.23 C
197816.7 C-0.21 C
197917.4 C+0.52 C
198017.6 C+0.77 C
198117.0 C+0.10 C
198216.9 C+0.06 C

This station does not have enough complete years (30 are needed) to fit a temperature trend.

A year is complete when all 12 months have at least 20 days of both daily maximum and daily minimum readings. The annual mean is the mean of the monthly means. The trend describes this one station over this period; it does not say what caused the change.

Extremes by Year

1958 to 2026
Yearly extremes at Lucas Heights (Ansto): the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Hottest day (TXx)42.0 C (107.6 F)197739.0 C (102.2 F)21
Coldest night (TNn)-0.6 C (30.9 F)19681.9 C (35.4 F)21
Wettest day (Rx1day)247.2 mm (9.7 in)2022107.0 mm (4.2 in)69
Wettest five days (Rx5day)543.3 mm (21.4 in)2022163.3 mm (6.4 in)69
Longest dry spell (CDD)59 days198925 days69

Hottest day (TXx)

Hottest day (TXx) at Lucas Heights (Ansto) by year The hottest day of the year at Lucas Heights (Ansto), 1958 to 2026. The record is 42.0 C (107.6 F) in 1977, marked on the chart; the median year is 39.0 C (102.2 F). 34363840421960198020002020Record: 42.0 C (107.6 F) in 1977
The hottest day of the year at Lucas Heights (Ansto), 1958 to 2026. The record is 42.0 C (107.6 F) in 1977, marked on the chart; the median year is 39.0 C (102.2 F).
Hottest day (TXx) at Lucas Heights (Ansto) by year
YearHottest day (TXx)
1958n/a
1959n/a
1960n/a
1961n/a
196236.7 C (98.1 F)
196336.4 C (97.5 F)
196441.2 C (106.2 F)
196539.8 C (103.6 F)
196637.7 C (99.9 F)
196739.0 C (102.2 F)
196840.1 C (104.2 F)
196937.3 C (99.1 F)
197034.9 C (94.8 F)
197137.8 C (100.0 F)
197239.5 C (103.1 F)
197339.7 C (103.5 F)
197437.6 C (99.7 F)
197539.0 C (102.2 F)
197636.6 C (97.9 F)
197742.0 C (107.6 F)
197837.6 C (99.7 F)
197941.2 C (106.2 F)
198041.5 C (106.7 F)
198139.7 C (103.5 F)
198241.5 C (106.7 F)
1983n/a
1984n/a
1985n/a
1986n/a
1987n/a
1988n/a
1989n/a
1990n/a
1991n/a
1992n/a
1993n/a
1994n/a
1995n/a
1996n/a
1997n/a
1998n/a
1999n/a
2000n/a
2001n/a
2002n/a
2003n/a
2004n/a
2005n/a
2006n/a
2007n/a
2008n/a
2009n/a
2010n/a
2011n/a
2012n/a
2013n/a
2014n/a
2015n/a
2016n/a
2017n/a
2018n/a
2019n/a
2020n/a
2021n/a
2022n/a
2023n/a
2024n/a
2025n/a
2026n/a

Coldest night (TNn)

Coldest night (TNn) at Lucas Heights (Ansto) by year The coldest night of the year at Lucas Heights (Ansto), 1958 to 2026. The record is -0.6 C (30.9 F) in 1968, marked on the chart; the median year is 1.9 C (35.4 F). -1012341960198020002020Record: -0.6 C (30.9 F) in 1968
The coldest night of the year at Lucas Heights (Ansto), 1958 to 2026. The record is -0.6 C (30.9 F) in 1968, marked on the chart; the median year is 1.9 C (35.4 F).
Coldest night (TNn) at Lucas Heights (Ansto) by year
YearColdest night (TNn)
1958n/a
1959n/a
1960n/a
1961n/a
19622.2 C (36.0 F)
19632.4 C (36.3 F)
19641.6 C (34.9 F)
19651.7 C (35.1 F)
19661.7 C (35.1 F)
19673.1 C (37.6 F)
1968-0.6 C (30.9 F)
19693.3 C (37.9 F)
19701.4 C (34.5 F)
19711.9 C (35.4 F)
19723.1 C (37.6 F)
19731.6 C (34.9 F)
19741.7 C (35.1 F)
19752.8 C (37.0 F)
19763.4 C (38.1 F)
19772.5 C (36.5 F)
1978-0.5 C (31.1 F)
19793.3 C (37.9 F)
19802.7 C (36.9 F)
19811.5 C (34.7 F)
19821.3 C (34.3 F)
1983n/a
1984n/a
1985n/a
1986n/a
1987n/a
1988n/a
1989n/a
1990n/a
1991n/a
1992n/a
1993n/a
1994n/a
1995n/a
1996n/a
1997n/a
1998n/a
1999n/a
2000n/a
2001n/a
2002n/a
2003n/a
2004n/a
2005n/a
2006n/a
2007n/a
2008n/a
2009n/a
2010n/a
2011n/a
2012n/a
2013n/a
2014n/a
2015n/a
2016n/a
2017n/a
2018n/a
2019n/a
2020n/a
2021n/a
2022n/a
2023n/a
2024n/a
2025n/a
2026n/a

Wettest day (Rx1day)

Wettest day (Rx1day) at Lucas Heights (Ansto) by year The wettest day of the year at Lucas Heights (Ansto), 1958 to 2026. The record is 247.2 mm (9.7 in) in 2022, marked on the chart; the median year is 107.0 mm (4.2 in). 01002003001960198020002020Record: 247.2 mm (9.7 in) in 2022
The wettest day of the year at Lucas Heights (Ansto), 1958 to 2026. The record is 247.2 mm (9.7 in) in 2022, marked on the chart; the median year is 107.0 mm (4.2 in).
Wettest day (Rx1day) at Lucas Heights (Ansto) by year
YearWettest day (Rx1day)
1958132.1 mm (5.2 in)
1959121.4 mm (4.8 in)
196073.9 mm (2.9 in)
1961131.1 mm (5.2 in)
1962137.2 mm (5.4 in)
1963169.9 mm (6.7 in)
1964121.4 mm (4.8 in)
196571.6 mm (2.8 in)
1966122.7 mm (4.8 in)
1967115.3 mm (4.5 in)
196854.6 mm (2.1 in)
1969160.0 mm (6.3 in)
1970111.3 mm (4.4 in)
197152.1 mm (2.1 in)
197264.8 mm (2.6 in)
1973100.6 mm (4.0 in)
1974107.0 mm (4.2 in)
1975166.4 mm (6.6 in)
197667.2 mm (2.6 in)
1977128.4 mm (5.1 in)
1978133.7 mm (5.3 in)
197947.5 mm (1.9 in)
198055.6 mm (2.2 in)
198184.6 mm (3.3 in)
198257.8 mm (2.3 in)
198384.3 mm (3.3 in)
1984156.0 mm (6.1 in)
1985112.8 mm (4.4 in)
1986160.2 mm (6.3 in)
1987151.4 mm (6.0 in)
198898.6 mm (3.9 in)
198965.4 mm (2.6 in)
1990170.0 mm (6.7 in)
1991232.6 mm (9.2 in)
1992121.0 mm (4.8 in)
199357.8 mm (2.3 in)
199478.4 mm (3.1 in)
1995148.4 mm (5.8 in)
1996115.0 mm (4.5 in)
199775.0 mm (3.0 in)
1998109.8 mm (4.3 in)
1999103.2 mm (4.1 in)
200047.2 mm (1.9 in)
2001147.0 mm (5.8 in)
2002107.8 mm (4.2 in)
200374.6 mm (2.9 in)
200469.0 mm (2.7 in)
200547.0 mm (1.9 in)
200688.0 mm (3.5 in)
2007107.0 mm (4.2 in)
2008144.2 mm (5.7 in)
200947.3 mm (1.9 in)
201058.2 mm (2.3 in)
2011118.0 mm (4.6 in)
2012134.4 mm (5.3 in)
2013130.0 mm (5.1 in)
201474.0 mm (2.9 in)
2015102.6 mm (4.0 in)
2016122.5 mm (4.8 in)
201741.0 mm (1.6 in)
201846.0 mm (1.8 in)
201955.2 mm (2.2 in)
2020169.8 mm (6.7 in)
202173.0 mm (2.9 in)
2022247.2 mm (9.7 in)
202353.0 mm (2.1 in)
2024157.2 mm (6.2 in)
202594.8 mm (3.7 in)
202693.4 mm (3.7 in)

Wettest five days (Rx5day)

Wettest five days (Rx5day) at Lucas Heights (Ansto) by year The wettest five days of the year at Lucas Heights (Ansto), 1958 to 2026. The record is 543.3 mm (21.4 in) in 2022, marked on the chart; the median year is 163.3 mm (6.4 in). 02004006001960198020002020Record: 543.3 mm (21.4 in) in 2022
The wettest five days of the year at Lucas Heights (Ansto), 1958 to 2026. The record is 543.3 mm (21.4 in) in 2022, marked on the chart; the median year is 163.3 mm (6.4 in).
Wettest five days (Rx5day) at Lucas Heights (Ansto) by year
YearWettest five days (Rx5day)
1958227.9 mm (9.0 in)
1959138.1 mm (5.4 in)
1960152.1 mm (6.0 in)
1961336.8 mm (13.3 in)
1962250.7 mm (9.9 in)
1963208.3 mm (8.2 in)
1964350.8 mm (13.8 in)
1965117.4 mm (4.6 in)
1966168.2 mm (6.6 in)
1967172.4 mm (6.8 in)
1968107.5 mm (4.2 in)
1969208.1 mm (8.2 in)
1970168.7 mm (6.6 in)
1971109.3 mm (4.3 in)
1972162.6 mm (6.4 in)
1973118.9 mm (4.7 in)
1974187.8 mm (7.4 in)
1975221.2 mm (8.7 in)
1976201.8 mm (7.9 in)
1977179.8 mm (7.1 in)
1978271.9 mm (10.7 in)
197997.5 mm (3.8 in)
198070.2 mm (2.8 in)
1981178.0 mm (7.0 in)
1982132.9 mm (5.2 in)
1983176.6 mm (7.0 in)
1984263.3 mm (10.4 in)
1985134.0 mm (5.3 in)
1986384.0 mm (15.1 in)
1987163.3 mm (6.4 in)
1988194.4 mm (7.7 in)
1989161.1 mm (6.3 in)
1990349.1 mm (13.7 in)
1991383.5 mm (15.1 in)
1992252.2 mm (9.9 in)
199377.8 mm (3.1 in)
199487.7 mm (3.5 in)
1995194.2 mm (7.6 in)
1996145.8 mm (5.7 in)
1997121.8 mm (4.8 in)
1998174.3 mm (6.9 in)
1999127.4 mm (5.0 in)
2000113.0 mm (4.4 in)
2001202.6 mm (8.0 in)
2002189.8 mm (7.5 in)
2003224.4 mm (8.8 in)
2004138.6 mm (5.5 in)
200584.8 mm (3.3 in)
200645.0 mm (1.8 in)
200783.6 mm (3.3 in)
2008260.2 mm (10.2 in)
200994.4 mm (3.7 in)
201088.0 mm (3.5 in)
2011154.7 mm (6.1 in)
201272.4 mm (2.9 in)
2013127.4 mm (5.0 in)
2014129.3 mm (5.1 in)
2015233.8 mm (9.2 in)
2016261.1 mm (10.3 in)
2017112.0 mm (4.4 in)
201870.8 mm (2.8 in)
2019101.0 mm (4.0 in)
2020332.6 mm (13.1 in)
2021236.6 mm (9.3 in)
2022543.3 mm (21.4 in)
202368.4 mm (2.7 in)
2024182.8 mm (7.2 in)
2025140.8 mm (5.5 in)
2026121.8 mm (4.8 in)

Longest dry spell (CDD)

Longest dry spell (CDD) at Lucas Heights (Ansto) by year The longest dry spell of the year at Lucas Heights (Ansto), 1958 to 2026. The record is 59 days in 1989, marked on the chart; the median year is 25 days. 02040601960198020002020Record: 59 days in 1989
The longest dry spell of the year at Lucas Heights (Ansto), 1958 to 2026. The record is 59 days in 1989, marked on the chart; the median year is 25 days.
Longest dry spell (CDD) at Lucas Heights (Ansto) by year
YearLongest dry spell (CDD)
195820 days
195920 days
196028 days
196120 days
196234 days
196322 days
196428 days
196525 days
196626 days
196725 days
196824 days
196922 days
197040 days
197129 days
197237 days
197331 days
197434 days
197534 days
197627 days
197742 days
197826 days
197931 days
198036 days
198127 days
198241 days
198322 days
198429 days
198520 days
198628 days
198722 days
198838 days
198959 days
199022 days
199119 days
199222 days
199322 days
199426 days
199533 days
199621 days
199734 days
199814 days
199918 days
200019 days
200124 days
200246 days
200321 days
200427 days
20052 days
20063 days
20073 days
20082 days
20092 days
20102 days
20112 days
20122 days
20131 day
201431 days
201523 days
201623 days
201731 days
201851 days
201933 days
202019 days
202126 days
202215 days
202322 days
202424 days
202527 days
202627 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, 1959 to 2025

A day with at least 99.0 mm (3.9 in) of rain is expected about once in 2 years. A day with at least 245.9 mm (9.7 in) of rain is expected about once in 100 years.

Rainfall return levels at Lucas Heights (Ansto): the daily rain expected about once in a given number of years
Expected about once inA day with at leastNote
2 years99.0 mm (3.9 in)
5 years140.7 mm (5.5 in)
10 years167.3 mm (6.6 in)
25 years199.8 mm (7.9 in)
50 years223.2 mm (8.8 in)
100 years245.9 mm (9.7 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 1959 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: 247.2 mm (9.7 in) in 2022; 232.6 mm (9.2 in) in 1991; 170.0 mm (6.7 in) in 1990.

Download the Data

  • Data for Lucas Heights (Ansto) standing records by year: CSV or JSON. Field meanings are on the data page.
  • Data for Lucas Heights (Ansto) 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 (2026-10-14).