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Heron Island Res STN Weather Records (ASN00039122)

Record envelope, standing records and threshold days for Heron Island Res STN (ASN00039122), Australia, with 52 years of record.

Key Facts for Heron Island Res STN

  • Heron Island Res STN (ASN00039122) is a weather station in Australia at -23.44 latitude and 151.91 longitude, 3 m (11 ft) above sea level.
  • The station reports from 1956 to 2007, 52 years of record.
  • 1,464 records set at Heron Island Res STN still stand.
  • Records are tracked for prcp: an element needs 30 years of data to be eligible.
  • Heron Island Res STN set a daily record precipitation of 52.8 mm (2.1 in) on 17 February 2007.

About the Station

  • Location: Australia, -23.44 latitude, 151.91 longitude.
  • Elevation: 3 m (11 ft).
  • Period of record: 1956 to 2007, 52 years.
  • Eligible elements: prcp.

Daily Record Envelope and 2026

0 days at or beyond a record
Daily record high and record low at Heron Island Res STN, with 2026 drawn through them The band shows the record high and record low for each calendar day at Heron Island Res STN. The lines show the 2026 daily maximum and minimum. 0 days in 2026 matched or passed a record. Temperatures are in degrees Celsius. 010203040 JanFebMarAprMayJunJulAugSepOctNovDec
The band shows the record high and record low for each calendar day at Heron Island Res STN. 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 Heron Island Res STN, with 2026 drawn through them
MonthHighest record highLowest record low2026 highest maximum2026 lowest minimum
Jan33.9 C (93.0 F)17.8 C (64.0 F)n/an/a
Feb34.0 C (93.2 F)17.2 C (63.0 F)n/an/a
Mar32.9 C (91.2 F)15.6 C (60.1 F)n/an/a
Apr31.8 C (89.2 F)15.0 C (59.0 F)n/an/a
May29.3 C (84.7 F)12.3 C (54.1 F)n/an/a
Jun27.0 C (80.6 F)7.2 C (45.0 F)n/an/a
Jul25.6 C (78.1 F)5.0 C (41.0 F)n/an/a
Aug27.8 C (82.0 F)5.6 C (42.1 F)n/an/a
Sep31.1 C (88.0 F)12.8 C (55.0 F)n/an/a
Oct30.6 C (87.1 F)14.4 C (57.9 F)n/an/a
Nov32.2 C (90.0 F)17.0 C (62.6 F)n/an/a
Dec34.7 C (94.5 F)16.7 C (62.1 F)n/an/a

Which Years Hold Standing Records

1,464 standing records
Standing records at Heron Island Res STN by the year they were set 1,464 records at Heron Island Res STN still stand. 2003 holds the most, with 79. 0204060801962: 671963: 781964: 601965: 591966: 681967: 511968: 591969: 471970: 561971: 501972: 411973: 571974: 621975: 491976: 501977: 381978: 661979: 311980: 451998: 61999: 242000: 292001: 442002: 542003: 792004: 612005: 692006: 502007: 141962196519681971197419771980200020032006
1,464 records at Heron Island Res STN still stand. 2003 holds the most, with 79.
Standing records at Heron Island Res STN by the year they were set
Year setStanding records
196267
196378
196460
196559
196668
196751
196859
196947
197056
197150
197241
197357
197462
197549
197650
197738
197866
197931
198045
19986
199924
200029
200144
200254
200379
200461
200569
200650
200714

All-Time Record Progression

1 new records
When Heron Island Res STN set new all-time records 1 all-time records were set at Heron Island Res STN between 21 February 1992 and 21 February 1992. Each dot is a new record. Record daily precipitation21 February 1992: Record daily precipitation 282.4 mm (11.1 in)
1 all-time records were set at Heron Island Res STN between 21 February 1992 and 21 February 1992. Each dot is a new record.
When Heron Island Res STN set new all-time records
DateKindDetail
1992-02-21Record daily precipitationRecord daily precipitation 282.4 mm (11.1 in)

Wettest Day of Each Month

Feb: 282.4 mm (11.1 in)
Record daily precipitation for each month at Heron Island Res STN The wettest day on record for each calendar month at Heron Island Res STN. The most was 282.4 mm (11.1 in) on 21 February 1992. 0100200300 Jan: 191.2 mm (7.5 in), 11 January 1993 Jan Feb: 282.4 mm (11.1 in), 21 February 1992 Feb Mar: 159.8 mm (6.3 in), 4 March 1983 Mar Apr: 167.4 mm (6.6 in), 3 April 1990 Apr May: 87.1 mm (3.4 in), 20 May 1971 May Jun: 250.2 mm (9.9 in), 21 June 1967 Jun Jul: 165.1 mm (6.5 in), 26 July 1973 Jul Aug: 55.7 mm (2.2 in), 29 August 1978 Aug Sep: 91.8 mm (3.6 in), 1 September 2006 Sep Oct: 81.2 mm (3.2 in), 23 October 1976 Oct Nov: 130.6 mm (5.1 in), 18 November 1961 Nov Dec: 158.0 mm (6.2 in), 17 December 1958 Dec
The wettest day on record for each calendar month at Heron Island Res STN. The most was 282.4 mm (11.1 in) on 21 February 1992.
Record daily precipitation for each month at Heron Island Res STN
MonthRecord daily precipitation (mm)Date
Jan191.2 mm (7.5 in)11 January 1993
Feb282.4 mm (11.1 in)21 February 1992
Mar159.8 mm (6.3 in)4 March 1983
Apr167.4 mm (6.6 in)3 April 1990
May87.1 mm (3.4 in)20 May 1971
Jun250.2 mm (9.9 in)21 June 1967
Jul165.1 mm (6.5 in)26 July 1973
Aug55.7 mm (2.2 in)29 August 1978
Sep91.8 mm (3.6 in)1 September 2006
Oct81.2 mm (3.2 in)23 October 1976
Nov130.6 mm (5.1 in)18 November 1961
Dec158.0 mm (6.2 in)17 December 1958

Period of Record Coverage

1962 to 2007
Days with data per year at Heron Island Res STN 29 years of record at Heron Island Res STN, 1962 to 2007. 8 years have data for under 90 percent of days and are left out of rankings: 1965, 1970, 1971, 1972, 1973, 1980, 1998, 2007. 1962: 365 of 365 days1963: 365 of 365 days1964: 342 of 366 days1965: 277 of 365 days1966: 365 of 365 days1967: 364 of 365 days1968: 351 of 366 days1969: 355 of 365 days1970: 303 of 365 days1971: 306 of 365 days1972: 267 of 366 days1973: 315 of 365 days1974: 334 of 365 days1975: 362 of 365 days1976: 341 of 366 days1977: 345 of 365 days1978: 349 of 365 days1979: 364 of 365 days1980: 227 of 366 days1998: 41 of 365 days1999: 335 of 365 days2000: 363 of 366 days2001: 359 of 365 days2002: 363 of 365 days2003: 359 of 365 days2004: 362 of 366 days2005: 362 of 365 days2006: 357 of 365 days2007: 88 of 365 days196519701975198020002005
29 years of record at Heron Island Res STN, 1962 to 2007. 8 years have data for under 90 percent of days and are left out of rankings: 1965, 1970, 1971, 1972, 1973, 1980, 1998, 2007.
Days with data per year at Heron Island Res STN
YearDays with dataShare of yearComplete
1962365100%Yes
1963365100%Yes
196434293%Yes
196527776%No
1966365100%Yes
1967364100%Yes
196835196%Yes
196935597%Yes
197030383%No
197130684%No
197226773%No
197331586%No
197433492%Yes
197536299%Yes
197634193%Yes
197734595%Yes
197834996%Yes
1979364100%Yes
198022762%No
19984111%No
199933592%Yes
200036399%Yes
200135998%Yes
200236399%Yes
200335998%Yes
200436299%Yes
200536299%Yes
200635798%Yes
20078824%No

Latest Records

20
Latest records at Heron Island Res STN
DateStationRecordValueBeat old record byOld record stoodSignificance
17 February 2007Heron Island Res STN, AUdaily rain52.8 mm (2.1 in)19.0 mm (0.7 in)39 years24 of 100 (Routine)
10 November 2006Heron Island Res STN, AUdaily rain6.6 mm (0.26 in)4.1 mm (0.16 in)39 years19 of 100 (Routine)
17 September 2006Heron Island Res STN, AUdaily rain9.0 mm (0.35 in)4.7 mm (0.19 in)35 years20 of 100 (Routine)
1 September 2006Heron Island Res STN, AUmonthly rain91.8 mm (3.6 in)14.8 mm (0.6 in)7 years35 of 100 (Notable)
28 July 2006Heron Island Res STN, AUdaily rain20.0 mm (0.8 in)7.2 mm (0.28 in)27 years17 of 100 (Routine)
13 June 2006Heron Island Res STN, AUdaily rain13.6 mm (0.5 in)5.2 mm (0.20 in)24 years14 of 100 (Routine)
7 April 2006Heron Island Res STN, AUdaily rain67.4 mm (2.7 in)11.6 mm (0.5 in)21 years18 of 100 (Routine)
8 March 2006Heron Island Res STN, AUdaily rain8.6 mm (0.34 in)0.2 mm (0.01 in)17 years10 of 100 (Routine)
9 January 2006Heron Island Res STN, AUdaily rain65.6 mm (2.6 in)31.1 mm (1.2 in)44 years35 of 100 (Notable)
28 November 2005Heron Island Res STN, AUdaily rain17.0 mm (0.7 in)9.0 mm (0.35 in)4 years12 of 100 (Routine)
6 September 2005Heron Island Res STN, AUdaily rain39.8 mm (1.6 in)27.4 mm (1.1 in)46 years52 of 100 (Notable)
13 August 2005Heron Island Res STN, AUdaily rain31.8 mm (1.3 in)15.2 mm (0.6 in)10 years24 of 100 (Routine)
9 April 2005Heron Island Res STN, AUdaily rain11.4 mm (0.4 in)3.6 mm (0.14 in)30 years16 of 100 (Routine)
14 March 2005Heron Island Res STN, AUdaily rain7.4 mm (0.29 in)0.4 mm (0.02 in)26 years12 of 100 (Routine)
27 January 2005Heron Island Res STN, AUdaily rain54.2 mm (2.1 in)3.1 mm (0.12 in)42 years18 of 100 (Routine)
21 October 2004Heron Island Res STN, AUdaily rain22.6 mm (0.9 in)12.4 mm (0.5 in)7 years17 of 100 (Routine)
1 September 2004Heron Island Res STN, AUdaily rain16.0 mm (0.6 in)11.0 mm (0.4 in)11 years20 of 100 (Routine)
10 May 2004Heron Island Res STN, AUdaily rain24.6 mm (1.0 in)3.6 mm (0.14 in)5 years7 of 100 (Routine)
9 May 2004Heron Island Res STN, AUdaily rain24.0 mm (0.9 in)10.6 mm (0.4 in)29 years20 of 100 (Routine)
8 May 2004Heron Island Res STN, AUdaily rain80.2 mm (3.2 in)14.7 mm (0.6 in)15 years19 of 100 (Routine)

Climate Trend

17 complete years, 1962 to 2006
Annual mean temperature at Heron Island Res STN as warming stripes, 1962 to 2006 One stripe for each of 17 complete years at Heron Island Res STN, 1962 to 2006. Blue stripes are years cooler than the station's own mean of 23.6 C (74.4 F); red stripes are warmer. The coolest year was 1963, at 23.0 C (73.4 F), and the warmest was 2005, at 24.3 C (75.8 F). The strongest colour marks a difference of 0.8 C (1.4 F). 1962: 23.3 C, -0.2 C from the station mean1963: 23.0 C, -0.6 C from the station mean1966: 23.0 C, -0.6 C from the station mean1967: 23.0 C, -0.5 C from the station mean1968: 23.3 C, -0.3 C from the station mean1969: 23.5 C, -0.1 C from the station mean1975: 23.6 C, 0.0 C from the station mean1978: 23.2 C, -0.4 C from the station mean1979: 23.5 C, 0.0 C from the station mean1999: 23.8 C, +0.2 C from the station mean2000: 23.4 C, -0.2 C from the station mean2001: 24.0 C, +0.4 C from the station mean2002: 24.0 C, +0.4 C from the station mean2003: 23.8 C, +0.2 C from the station mean2004: 24.0 C, +0.4 C from the station mean2005: 24.3 C, +0.8 C from the station mean2006: 24.0 C, +0.4 C from the station mean1962196519701975198019851990199520002005
One stripe for each of 17 complete years at Heron Island Res STN, 1962 to 2006. Blue stripes are years cooler than the station's own mean of 23.6 C (74.4 F); red stripes are warmer. The coolest year was 1963, at 23.0 C (73.4 F), and the warmest was 2005, at 24.3 C (75.8 F). The strongest colour marks a difference of 0.8 C (1.4 F).
Annual mean temperature at Heron Island Res STN as warming stripes, 1962 to 2006
YearAnnual mean temperatureDifference from the station mean
196223.3 C-0.24 C
196323.0 C-0.57 C
196623.0 C-0.56 C
196723.0 C-0.53 C
196823.3 C-0.29 C
196923.5 C-0.08 C
197523.6 C+0.00 C
197823.2 C-0.40 C
197923.5 C-0.05 C
199923.8 C+0.19 C
200023.4 C-0.17 C
200124.0 C+0.42 C
200224.0 C+0.44 C
200323.8 C+0.22 C
200424.0 C+0.40 C
200524.3 C+0.77 C
200624.0 C+0.42 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

1956 to 2007
Yearly extremes at Heron Island Res STN: the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Hottest day (TXx)34.7 C (94.5 F)200532.2 C (90.0 F)29
Coldest night (TNn)5.0 C (41.0 F)196512.0 C (53.6 F)29
Wettest day (Rx1day)282.4 mm (11.1 in)199285.2 mm (3.4 in)52
Wettest five days (Rx5day)436.4 mm (17.2 in)1967150.6 mm (5.9 in)52
Longest dry spell (CDD)73 days196527 days52

Hottest day (TXx)

Hottest day (TXx) at Heron Island Res STN by year The hottest day of the year at Heron Island Res STN, 1956 to 2007. The record is 34.7 C (94.5 F) in 2005, marked on the chart; the median year is 32.2 C (90.0 F). 313233343519601970198019902000Record: 34.7 C (94.5 F) in 2005
The hottest day of the year at Heron Island Res STN, 1956 to 2007. The record is 34.7 C (94.5 F) in 2005, marked on the chart; the median year is 32.2 C (90.0 F).
Hottest day (TXx) at Heron Island Res STN by year
YearHottest day (TXx)
1956n/a
1957n/a
1958n/a
1959n/a
1960n/a
1961n/a
196232.2 C (90.0 F)
196332.8 C (91.0 F)
196432.8 C (91.0 F)
196532.2 C (90.0 F)
196631.1 C (88.0 F)
196731.1 C (88.0 F)
196831.7 C (89.1 F)
196933.3 C (91.9 F)
197031.7 C (89.1 F)
197132.2 C (90.0 F)
197232.0 C (89.6 F)
197332.3 C (90.1 F)
197431.7 C (89.1 F)
197532.0 C (89.6 F)
197632.5 C (90.5 F)
197732.0 C (89.6 F)
197831.7 C (89.1 F)
197932.5 C (90.5 F)
198032.9 C (91.2 F)
1981n/a
1982n/a
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
199832.2 C (90.0 F)
199933.0 C (91.4 F)
200032.1 C (89.8 F)
200133.1 C (91.6 F)
200234.0 C (93.2 F)
200331.5 C (88.7 F)
200433.3 C (91.9 F)
200534.7 C (94.5 F)
200633.1 C (91.6 F)
200732.7 C (90.9 F)

Coldest night (TNn)

Coldest night (TNn) at Heron Island Res STN by year The coldest night of the year at Heron Island Res STN, 1956 to 2007. The record is 5.0 C (41.0 F) in 1965, marked on the chart; the median year is 12.0 C (53.6 F). 51015202519601970198019902000Record: 5.0 C (41.0 F) in 1965
The coldest night of the year at Heron Island Res STN, 1956 to 2007. The record is 5.0 C (41.0 F) in 1965, marked on the chart; the median year is 12.0 C (53.6 F).
Coldest night (TNn) at Heron Island Res STN by year
YearColdest night (TNn)
1956n/a
1957n/a
1958n/a
1959n/a
1960n/a
1961n/a
196211.7 C (53.1 F)
19636.7 C (44.1 F)
196410.6 C (51.1 F)
19655.0 C (41.0 F)
19667.2 C (45.0 F)
19679.4 C (48.9 F)
19685.6 C (42.1 F)
196911.1 C (52.0 F)
197010.6 C (51.1 F)
19718.3 C (46.9 F)
197213.2 C (55.8 F)
197312.3 C (54.1 F)
197411.7 C (53.1 F)
197512.7 C (54.9 F)
197612.0 C (53.6 F)
197712.0 C (53.6 F)
197812.0 C (53.6 F)
197912.0 C (53.6 F)
198012.5 C (54.5 F)
1981n/a
1982n/a
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
199818.9 C (66.0 F)
199911.8 C (53.2 F)
200012.3 C (54.1 F)
200111.9 C (53.4 F)
200212.9 C (55.2 F)
200313.3 C (55.9 F)
200413.1 C (55.6 F)
200511.6 C (52.9 F)
200613.4 C (56.1 F)
200721.1 C (70.0 F)

Wettest day (Rx1day)

Wettest day (Rx1day) at Heron Island Res STN by year The wettest day of the year at Heron Island Res STN, 1956 to 2007. The record is 282.4 mm (11.1 in) in 1992, marked on the chart; the median year is 85.2 mm (3.4 in). 010020030019601970198019902000Record: 282.4 mm (11.1 in) in 1992
The wettest day of the year at Heron Island Res STN, 1956 to 2007. The record is 282.4 mm (11.1 in) in 1992, marked on the chart; the median year is 85.2 mm (3.4 in).
Wettest day (Rx1day) at Heron Island Res STN by year
YearWettest day (Rx1day)
1956115.8 mm (4.6 in)
195737.3 mm (1.5 in)
1958158.0 mm (6.2 in)
195968.6 mm (2.7 in)
1960103.4 mm (4.1 in)
1961130.6 mm (5.1 in)
196281.0 mm (3.2 in)
196379.0 mm (3.1 in)
196471.4 mm (2.8 in)
196566.8 mm (2.6 in)
1966143.3 mm (5.6 in)
1967250.2 mm (9.9 in)
1968119.9 mm (4.7 in)
196984.1 mm (3.3 in)
197046.7 mm (1.8 in)
197187.1 mm (3.4 in)
197268.1 mm (2.7 in)
1973165.1 mm (6.5 in)
197475.0 mm (3.0 in)
197586.2 mm (3.4 in)
197681.4 mm (3.2 in)
1977112.0 mm (4.4 in)
197884.2 mm (3.3 in)
197980.8 mm (3.2 in)
1980198.0 mm (7.8 in)
198181.3 mm (3.2 in)
198240.4 mm (1.6 in)
1983159.8 mm (6.3 in)
198455.8 mm (2.2 in)
198588.8 mm (3.5 in)
198683.2 mm (3.3 in)
198764.6 mm (2.5 in)
1988176.6 mm (7.0 in)
1989231.4 mm (9.1 in)
1990167.4 mm (6.6 in)
1991132.0 mm (5.2 in)
1992282.4 mm (11.1 in)
1993191.2 mm (7.5 in)
199476.6 mm (3.0 in)
1995152.4 mm (6.0 in)
1996100.8 mm (4.0 in)
199757.8 mm (2.3 in)
199877.0 mm (3.0 in)
199990.0 mm (3.5 in)
200081.8 mm (3.2 in)
2001110.4 mm (4.3 in)
200293.4 mm (3.7 in)
200373.6 mm (2.9 in)
200480.2 mm (3.2 in)
200554.2 mm (2.1 in)
200691.8 mm (3.6 in)
200752.8 mm (2.1 in)

Wettest five days (Rx5day)

Wettest five days (Rx5day) at Heron Island Res STN by year The wettest five days of the year at Heron Island Res STN, 1956 to 2007. The record is 436.4 mm (17.2 in) in 1967, marked on the chart; the median year is 150.6 mm (5.9 in). 010020030040050019601970198019902000Record: 436.4 mm (17.2 in) in 1967
The wettest five days of the year at Heron Island Res STN, 1956 to 2007. The record is 436.4 mm (17.2 in) in 1967, marked on the chart; the median year is 150.6 mm (5.9 in).
Wettest five days (Rx5day) at Heron Island Res STN by year
YearWettest five days (Rx5day)
1956206.7 mm (8.1 in)
195744.2 mm (1.7 in)
1958252.7 mm (9.9 in)
195999.5 mm (3.9 in)
1960159.3 mm (6.3 in)
1961170.5 mm (6.7 in)
1962149.1 mm (5.9 in)
1963112.3 mm (4.4 in)
196479.8 mm (3.1 in)
1965137.9 mm (5.4 in)
1966245.4 mm (9.7 in)
1967436.4 mm (17.2 in)
1968193.5 mm (7.6 in)
1969148.7 mm (5.9 in)
197082.3 mm (3.2 in)
1971242.9 mm (9.6 in)
1972121.7 mm (4.8 in)
1973305.3 mm (12.0 in)
1974176.2 mm (6.9 in)
1975165.1 mm (6.5 in)
1976110.0 mm (4.3 in)
1977152.2 mm (6.0 in)
1978154.0 mm (6.1 in)
1979194.0 mm (7.6 in)
1980201.6 mm (7.9 in)
1981134.3 mm (5.3 in)
198263.6 mm (2.5 in)
1983212.7 mm (8.4 in)
198467.6 mm (2.7 in)
1985119.2 mm (4.7 in)
1986144.4 mm (5.7 in)
1987119.1 mm (4.7 in)
1988177.0 mm (7.0 in)
1989254.0 mm (10.0 in)
1990423.4 mm (16.7 in)
1991191.6 mm (7.5 in)
1992314.3 mm (12.4 in)
1993248.6 mm (9.8 in)
1994113.9 mm (4.5 in)
1995323.9 mm (12.8 in)
1996230.4 mm (9.1 in)
199778.6 mm (3.1 in)
1998100.8 mm (4.0 in)
1999247.2 mm (9.7 in)
2000161.6 mm (6.4 in)
2001112.2 mm (4.4 in)
2002147.0 mm (5.8 in)
2003141.4 mm (5.6 in)
2004139.6 mm (5.5 in)
2005107.0 mm (4.2 in)
2006117.0 mm (4.6 in)
200788.2 mm (3.5 in)

Longest dry spell (CDD)

Longest dry spell (CDD) at Heron Island Res STN by year The longest dry spell of the year at Heron Island Res STN, 1956 to 2007. The record is 73 days in 1965, marked on the chart; the median year is 27 days. 02040608019601970198019902000Record: 73 days in 1965
The longest dry spell of the year at Heron Island Res STN, 1956 to 2007. The record is 73 days in 1965, marked on the chart; the median year is 27 days.
Longest dry spell (CDD) at Heron Island Res STN by year
YearLongest dry spell (CDD)
195664 days
195711 days
19587 days
195925 days
196030 days
196124 days
196224 days
196340 days
196425 days
196573 days
196620 days
196750 days
196828 days
196921 days
197024 days
197130 days
197241 days
197321 days
197453 days
197521 days
197638 days
197749 days
197824 days
197929 days
198019 days
198126 days
198229 days
198331 days
198428 days
198535 days
198641 days
198723 days
198825 days
198968 days
199027 days
199147 days
199215 days
199324 days
199435 days
199526 days
199618 days
199725 days
199826 days
199917 days
200048 days
200130 days
200225 days
200333 days
200430 days
200528 days
200627 days
200711 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

44 years, 1959 to 2006

A day with at least 94.5 mm (3.7 in) of rain is expected about once in 2 years. A day with at least 356.6 mm (14.0 in) of rain is expected about once in 100 years.

Rainfall return levels at Heron Island Res STN: the daily rain expected about once in a given number of years
Expected about once inA day with at leastNote
2 years94.5 mm (3.7 in)
5 years138.1 mm (5.4 in)
10 years175.4 mm (6.9 in)
25 years234.9 mm (9.2 in)
50 years290.2 mm (11.4 in)Longer than the 44 years of record
100 years356.6 mm (14.0 in)Longer than the 44 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, 44 years of values from 1959 to 2006.

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: 282.4 mm (11.1 in) in 1992; 250.2 mm (9.9 in) in 1967; 231.4 mm (9.1 in) in 1989.

Download the Data

  • Data for Heron Island Res STN standing records by year: CSV or JSON. Field meanings are on the data page.
  • Data for Heron Island Res STN 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).