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Built 2026-10-19 (19 October 2026)

Blackmans Bay Treatment Plant Threshold Days by Year (ASN00094163)

4 fixed thresholds counted per year at Blackmans Bay Treatment Plant (ASN00094163): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Blackmans Bay Treatment Plant Thresholds

  • Blackmans Bay Treatment Plant: days with 10 mm (0.39 in) or more of precipitation in 26 years, most in 1996 with 21.
  • Blackmans Bay Treatment Plant: days with 25 mm (0.98 in) or more of precipitation in 21 years, most in 1986 with 6.
  • Blackmans Bay Treatment Plant: days with 50 mm (1.97 in) or more of precipitation in 9 years, most in 1996 with 2.
  • Blackmans Bay Treatment Plant: days with 100 mm (3.94 in) or more of precipitation in 1 years, most in 1999 with 1.
  • 4 fixed thresholds have at least one qualifying day at Blackmans Bay Treatment Plant.
26 years with a qualifying day
Days with 10 mm (0.39 in) or more of precipitation per year at Blackmans Bay Treatment Plant Days per year at Blackmans Bay Treatment Plant with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 21 in 1996. 01020301983: 161984: 141985: 191986: 191987: 141988: 171989: 141990: 151991: 121992: 131994: 51995: 121996: 211997: 131998: 121999: 72000: 122001: 162002: 112003: 142004: 132005: 172006: 42007: 92008: 102009: 18198319861989199219961999200220052008
Days per year at Blackmans Bay Treatment Plant with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 21 in 1996.
Days with 10 mm (0.39 in) or more of precipitation per year at Blackmans Bay Treatment Plant
YearDaysDecade average
19831616.1
19841416.1
19851916.1
19861916.1
19871416.1
19881716.1
19891416.1
19901512.2
19911212.2
19921312.2
1994512.2
19951212.2
19962112.2
19971312.2
19981212.2
1999712.2
20001212.4
20011612.4
20021112.4
20031412.4
20041312.4
20051712.4
2006412.4
2007912.4
20081012.4
20091812.4
First to last qualifying date each year at Blackmans Bay Treatment Plant For each year, a bar from the first to the last day at Blackmans Bay Treatment Plant meeting 10 mm (0.39 in). 1983: 27 January 1983 to 17 November 19831984: 6 July 1984 to 26 December 19841985: 17 February 1985 to 22 December 19851986: 9 January 1986 to 17 December 19861987: 7 January 1987 to 7 December 19871988: 31 January 1988 to 18 December 19881989: 5 January 1989 to 26 December 19891990: 4 January 1990 to 20 October 19901991: 25 January 1991 to 5 November 19911992: 3 January 1992 to 22 November 19921994: 7 April 1994 to 7 October 19941995: 21 January 1995 to 20 December 19951996: 2 January 1996 to 12 December 19961997: 22 January 1997 to 2 December 19971998: 8 February 1998 to 27 December 19981999: 7 February 1999 to 7 November 19992000: 4 January 2000 to 24 December 20002001: 9 April 2001 to 26 November 20012002: 7 January 2002 to 15 October 20022003: 1 March 2003 to 22 December 20032004: 30 January 2004 to 6 November 20042005: 7 January 2005 to 18 December 20052006: 1 January 2006 to 6 October 20062007: 6 January 2007 to 30 September 20072008: 23 February 2008 to 14 December 20082009: 24 February 2009 to 15 October 20091983198719911996200020042008JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Blackmans Bay Treatment Plant meeting 10 mm (0.39 in).
First to last qualifying date each year at Blackmans Bay Treatment Plant
YearFirst dateLast date
19831983-01-271983-11-17
19841984-07-061984-12-26
19851985-02-171985-12-22
19861986-01-091986-12-17
19871987-01-071987-12-07
19881988-01-311988-12-18
19891989-01-051989-12-26
19901990-01-041990-10-20
19911991-01-251991-11-05
19921992-01-031992-11-22
19941994-04-071994-10-07
19951995-01-211995-12-20
19961996-01-021996-12-12
19971997-01-221997-12-02
19981998-02-081998-12-27
19991999-02-071999-11-07
20002000-01-042000-12-24
20012001-04-092001-11-26
20022002-01-072002-10-15
20032003-03-012003-12-22
20042004-01-302004-11-06
20052005-01-072005-12-18
20062006-01-012006-10-06
20072007-01-062007-09-30
20082008-02-232008-12-14
20092009-02-242009-10-15

Every Fixed Threshold

Fixed thresholds at Blackmans Bay Treatment Plant
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
10 mm (0.39 in): Days with 10 mm or more rain2621199618
25 mm (0.98 in): Days with 25 mm or more rain21619866
50 mm (1.97 in): Days with 50 mm or more rain9219962
100 mm (3.94 in): Days with 100 mm or more rain1119991

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1983.

Download the Data

  • Data for Blackmans Bay Treatment Plant 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 (2025-12-31).