Daily records
Page built 2026-10-18
Data as of 2025-12-31
Search
Built 2026-10-18 (18 October 2026)

Altona (City Offices) Threshold Days by Year

3 fixed thresholds counted per year at Altona (City Offices) (ASN00087131): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Altona (City Offices) Thresholds

  • Altona (City Offices): days with 10 mm (0.39 in) or more of precipitation in 9 years, most in 1973 with 23.
  • Altona (City Offices): days with 25 mm (0.98 in) or more of precipitation in 9 years, most in 1973 with 8.
  • Altona (City Offices): days with 50 mm (1.97 in) or more of precipitation in 3 years, most in 1970 with 1.
  • 3 fixed thresholds have at least one qualifying day at Altona (City Offices).
9 years with a qualifying day
Days with 10 mm (0.39 in) or more of precipitation per year at Altona (City Offices) Days per year at Altona (City Offices) with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 23 in 1973. 01020301969: 81970: 181972: 81973: 231976: 101979: 121980: 112011: 172012: 12196919701972197319761979198020112012
Days per year at Altona (City Offices) with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 23 in 1973.
Days with 10 mm (0.39 in) or more of precipitation per year at Altona (City Offices)
YearDaysDecade average
196988
19701814.2
1972814.2
19732314.2
19761014.2
19791214.2
19801111
20111714.5
20121214.5
First to last qualifying date each year at Altona (City Offices) For each year, a bar from the first to the last day at Altona (City Offices) meeting 10 mm (0.39 in). 1969: 11 February 1969 to 28 August 19691970: 1 January 1970 to 28 December 19701972: 7 January 1972 to 4 October 19721973: 15 January 1973 to 17 December 19731976: 1 March 1976 to 16 December 19761979: 17 January 1979 to 21 November 19791980: 23 April 1980 to 17 December 19802011: 11 January 2011 to 12 December 20112012: 28 February 2012 to 28 November 201219691972197619802012JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Altona (City Offices) meeting 10 mm (0.39 in).
First to last qualifying date each year at Altona (City Offices)
YearFirst dateLast date
19691969-02-111969-08-28
19701970-01-011970-12-28
19721972-01-071972-10-04
19731973-01-151973-12-17
19761976-03-011976-12-16
19791979-01-171979-11-21
19801980-04-231980-12-17
20112011-01-112011-12-12
20122012-02-282012-11-28

Every Fixed Threshold

Fixed thresholds at Altona (City Offices)
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
10 mm (0.39 in): Days with 10 mm or more rain923197312
25 mm (0.98 in): Days with 25 mm or more rain9819731
50 mm (1.97 in): Days with 50 mm or more rain3119701

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1969.

Download the Data

  • Data for Altona (City Offices) 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).