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

Helmans Tank Threshold Days by Year (ASN00048187)

4 fixed thresholds counted per year at Helmans Tank (ASN00048187): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Helmans Tank Thresholds

  • Helmans Tank: days with 10 mm (0.39 in) or more of precipitation in 17 years, most in 1889 with 21.
  • Helmans Tank: days with 25 mm (0.98 in) or more of precipitation in 16 years, most in 1890 with 7.
  • Helmans Tank: days with 50 mm (1.97 in) or more of precipitation in 4 years, most in 1890 with 2.
  • Helmans Tank: days with 100 mm (3.94 in) or more of precipitation in 1 years, most in 1891 with 1.
  • 4 fixed thresholds have at least one qualifying day at Helmans Tank.
17 years with a qualifying day
Days with 10 mm (0.39 in) or more of precipitation per year at Helmans Tank Days per year at Helmans Tank with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 21 in 1889. 01020301888: 41889: 211890: 211891: 141892: 71893: 161895: 91897: 141898: 91899: 91909: 101910: 111911: 171912: 61914: 41915: 81916: 11188818901892189518981909191119141916
Days per year at Helmans Tank with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 21 in 1889.
Days with 10 mm (0.39 in) or more of precipitation per year at Helmans Tank
YearDaysDecade average
1888412.5
18892112.5
18902112.4
18911412.4
1892712.4
18931612.4
1895912.4
18971412.4
1898912.4
1899912.4
19091010
1910119.5
1911179.5
191269.5
191449.5
191589.5
1916119.5
First to last qualifying date each year at Helmans Tank For each year, a bar from the first to the last day at Helmans Tank meeting 10 mm (0.39 in). 1888: 12 February 1888 to 23 September 18881889: 4 January 1889 to 12 December 18891890: 11 January 1890 to 13 November 18901891: 5 January 1891 to 1 December 18911892: 26 May 1892 to 25 October 18921893: 18 January 1893 to 21 November 18931895: 29 January 1895 to 30 November 18951897: 7 January 1897 to 28 December 18971898: 13 January 1898 to 21 October 18981899: 18 January 1899 to 22 November 18991909: 19 January 1909 to 23 December 19091910: 10 January 1910 to 11 December 19101911: 1 February 1911 to 4 December 19111912: 9 March 1912 to 13 July 19121914: 30 June 1914 to 1 December 19141915: 4 April 1915 to 14 October 19151916: 2 April 1916 to 11 December 1916188818911895189919111915JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Helmans Tank meeting 10 mm (0.39 in).
First to last qualifying date each year at Helmans Tank
YearFirst dateLast date
18881888-02-121888-09-23
18891889-01-041889-12-12
18901890-01-111890-11-13
18911891-01-051891-12-01
18921892-05-261892-10-25
18931893-01-181893-11-21
18951895-01-291895-11-30
18971897-01-071897-12-28
18981898-01-131898-10-21
18991899-01-181899-11-22
19091909-01-191909-12-23
19101910-01-101910-12-11
19111911-02-011911-12-04
19121912-03-091912-07-13
19141914-06-301914-12-01
19151915-04-041915-10-14
19161916-04-021916-12-11

Every Fixed Threshold

Fixed thresholds at Helmans Tank
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
10 mm (0.39 in): Days with 10 mm or more rain1721188911
25 mm (0.98 in): Days with 25 mm or more rain16718904
50 mm (1.97 in): Days with 50 mm or more rain4218901
100 mm (3.94 in): Days with 100 mm or more rain1118911

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1888.

Download the Data

  • Data for Helmans Tank 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).