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Built 2026-10-19 (19 October 2026)

Heron Island Res STN Threshold Days by Year (ASN00039122)

9 fixed thresholds counted per year at Heron Island Res STN (ASN00039122): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Heron Island Res STN Thresholds

  • Heron Island Res STN: days with 10 mm (0.39 in) or more of precipitation in 44 years, most in 1975 with 38.
  • Heron Island Res STN: days with 25 mm (0.98 in) or more of precipitation in 44 years, most in 1989 with 17.
  • Heron Island Res STN: days with 50 mm (1.97 in) or more of precipitation in 43 years, most in 1990 with 8.
  • Heron Island Res STN: days with a maximum temperature at or above 30 C (86 F) in 21 years, most in 2005 with 82.
  • 9 fixed thresholds have at least one qualifying day at Heron Island Res STN.
21 years with a qualifying day
Days at or above 30 C (86 F) per year at Heron Island Res STN Days per year at Heron Island Res STN with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 82 in 2005. 02550751001962: 541963: 271964: 711966: 331967: 321968: 411969: 651974: 171975: 371976: 401977: 291978: 471979: 461999: 502000: 442001: 592002: 662003: 132004: 472005: 822006: 761962196619691976197920012004
Days per year at Heron Island Res STN with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 82 in 2005.
Days at or above 30 C (86 F) per year at Heron Island Res STN
YearDaysDecade average
19625446.1
19632746.1
19647146.1
19663346.1
19673246.1
19684146.1
19696546.1
19741736
19753736
19764036
19772936
19784736
19794636
19995050
20004455.3
20015955.3
20026655.3
20031355.3
20044755.3
20058255.3
20067655.3
First to last qualifying date each year at Heron Island Res STN For each year, a bar from the first to the last day at Heron Island Res STN meeting 30 C (86 F). 1962: 1 January 1962 to 15 December 19621963: 2 January 1963 to 31 December 19631964: 3 January 1964 to 29 December 19641966: 1 January 1966 to 31 December 19661967: 1 January 1967 to 31 December 19671968: 1 January 1968 to 31 December 19681969: 1 January 1969 to 30 December 19691974: 5 January 1974 to 20 December 19741975: 3 January 1975 to 24 December 19751976: 10 January 1976 to 31 December 19761977: 1 January 1977 to 29 December 19771978: 6 January 1978 to 29 December 19781979: 15 January 1979 to 26 December 19791999: 1 January 1999 to 31 December 19992000: 1 January 2000 to 27 December 20002001: 8 January 2001 to 31 December 20012002: 1 January 2002 to 6 December 20022003: 2 January 2003 to 27 December 20032004: 7 January 2004 to 28 December 20042005: 3 January 2005 to 31 December 20052006: 1 January 2006 to 26 December 20061962196619691976197920012004JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Heron Island Res STN meeting 30 C (86 F).
First to last qualifying date each year at Heron Island Res STN
YearFirst dateLast date
19621962-01-011962-12-15
19631963-01-021963-12-31
19641964-01-031964-12-29
19661966-01-011966-12-31
19671967-01-011967-12-31
19681968-01-011968-12-31
19691969-01-011969-12-30
19741974-01-051974-12-20
19751975-01-031975-12-24
19761976-01-101976-12-31
19771977-01-011977-12-29
19781978-01-061978-12-29
19791979-01-151979-12-26
19991999-01-011999-12-31
20002000-01-012000-12-27
20012001-01-082001-12-31
20022002-01-012002-12-06
20032003-01-022003-12-27
20042004-01-072004-12-28
20052005-01-032005-12-31
20062006-01-012006-12-26

Every Fixed Threshold

Fixed thresholds at Heron Island Res STN
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days2182200576
90 F (32.2 C): Days121720027
20 C (68 F): Tropical nights (min212602003218
25 C (77 F): Days with min2160200553
10 mm (0.39 in): Days with 10 mm or more rain4438197527
25 mm (0.98 in): Days with 25 mm or more rain441719899
50 mm (1.97 in): Days with 50 mm or more rain43819904
100 mm (3.94 in): Days with 100 mm or more rain17419671
200 mm (7.87 in): Days with 200 mm or more rain3119671

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1962.

Download the Data

  • 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 2026-10-17 (17 October 2026). Threshold counts are computed by this site.

Data as of . Last revised (2026-10-17).