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Data as of 2025-12-31
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Built 2026-10-19 (19 October 2026)

Wanneroo Calm Threshold Days by Year (ASN00009120)

3 fixed thresholds counted per year at Wanneroo Calm (ASN00009120): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Wanneroo Calm Thresholds

  • Wanneroo Calm: days with 10 mm (0.39 in) or more of precipitation in 14 years, most in 1991 with 32.
  • Wanneroo Calm: days with 25 mm (0.98 in) or more of precipitation in 14 years, most in 1983 with 11.
  • Wanneroo Calm: days with 50 mm (1.97 in) or more of precipitation in 8 years, most in 1986 with 3.
  • 3 fixed thresholds have at least one qualifying day at Wanneroo Calm.
14 years with a qualifying day
Days with 10 mm (0.39 in) or more of precipitation per year at Wanneroo Calm Days per year at Wanneroo Calm with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 32 in 1991. 0102030401975: 191978: 251983: 281985: 181986: 281987: 181988: 191989: 191990: 221991: 321992: 281993: 221997: 232000: 271975198319861988199019921997
Days per year at Wanneroo Calm with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 32 in 1991.
Days with 10 mm (0.39 in) or more of precipitation per year at Wanneroo Calm
YearDaysDecade average
19751922
19782522
19832821.7
19851821.7
19862821.7
19871821.7
19881921.7
19891921.7
19902225.4
19913225.4
19922825.4
19932225.4
19972325.4
20002727
First to last qualifying date each year at Wanneroo Calm For each year, a bar from the first to the last day at Wanneroo Calm meeting 10 mm (0.39 in). 1975: 4 May 1975 to 10 December 19751978: 24 February 1978 to 19 December 19781983: 17 March 1983 to 16 November 19831985: 10 April 1985 to 8 November 19851986: 21 February 1986 to 16 October 19861987: 16 March 1987 to 26 September 19871988: 24 March 1988 to 12 November 19881989: 26 January 1989 to 30 October 19891990: 12 March 1990 to 13 October 19901991: 26 February 1991 to 25 December 19911992: 9 February 1992 to 20 November 19921993: 6 February 1993 to 5 October 19931997: 23 February 1997 to 26 November 19972000: 22 January 2000 to 10 November 20001975198319861988199019921997JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Wanneroo Calm meeting 10 mm (0.39 in).
First to last qualifying date each year at Wanneroo Calm
YearFirst dateLast date
19751975-05-041975-12-10
19781978-02-241978-12-19
19831983-03-171983-11-16
19851985-04-101985-11-08
19861986-02-211986-10-16
19871987-03-161987-09-26
19881988-03-241988-11-12
19891989-01-261989-10-30
19901990-03-121990-10-13
19911991-02-261991-12-25
19921992-02-091992-11-20
19931993-02-061993-10-05
19971997-02-231997-11-26
20002000-01-222000-11-10

Every Fixed Threshold

Fixed thresholds at Wanneroo Calm
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
10 mm (0.39 in): Days with 10 mm or more rain1432199127
25 mm (0.98 in): Days with 25 mm or more rain141119833
50 mm (1.97 in): Days with 50 mm or more rain8319861

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1975.

Download the Data

  • Data for Wanneroo Calm 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).