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Built 2026-10-19 (19 October 2026)

Roto Station Threshold Days by Year (ASN00049041)

3 fixed thresholds counted per year at Roto Station (ASN00049041): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Roto Station Thresholds

  • Roto Station: days with 10 mm (0.39 in) or more of precipitation in 57 years, most in 1894 with 22.
  • Roto Station: days with 25 mm (0.98 in) or more of precipitation in 50 years, most in 1889 with 8.
  • Roto Station: days with 50 mm (1.97 in) or more of precipitation in 17 years, most in 1887 with 3.
  • 3 fixed thresholds have at least one qualifying day at Roto Station.
57 years with a qualifying day
Days with 10 mm (0.39 in) or more of precipitation per year at Roto Station Days per year at Roto Station with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 22 in 1894. 01020301880: 141881: 141882: 141883: 101884: 61885: 121886: 101887: 181888: 71889: 191890: 131891: 191892: 111893: 81894: 221895: 71896: 121897: 51898: 101900: 101901: 61902: 51903: 71904: 101905: 111906: 171907: 61908: 71909: 91910: 211911: 151912: 131913: 121914: 71915: 81916: 121917: 171918: 81928: 71929: 101930: 121931: 181932: 121933: 131934: 161935: 91936: 181937: 41938: 61939: 191940: 41941: 81942: 81943: 81944: 51945: 101946: 111880188618921898190519111917193219381944
Days per year at Roto Station with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 22 in 1894.
Days with 10 mm (0.39 in) or more of precipitation per year at Roto Station
YearDaysDecade average
18801412.4
18811412.4
18821412.4
18831012.4
1884612.4
18851212.4
18861012.4
18871812.4
1888712.4
18891912.4
18901311.9
18911911.9
18921111.9
1893811.9
18942211.9
1895711.9
18961211.9
1897511.9
18981011.9
1900108.8
190168.8
190258.8
190378.8
1904108.8
1905118.8
1906178.8
190768.8
190878.8
190998.8
19102112.6
19111512.6
19121312.6
19131212.6
1914712.6
1915812.6
19161212.6
19171712.6
1918812.6
192878.5
1929108.5
19301212.7
19311812.7
19321212.7
19331312.7
19341612.7
1935912.7
19361812.7
1937412.7
1938612.7
19391912.7
194047.7
194187.7
194287.7
194387.7
194457.7
1945107.7
1946117.7
First to last qualifying date each year at Roto Station For each year, a bar from the first to the last day at Roto Station meeting 10 mm (0.39 in). 1880: 8 January 1880 to 3 December 18801881: 10 January 1881 to 15 November 18811882: 5 April 1882 to 6 December 18821883: 27 February 1883 to 10 November 18831884: 7 February 1884 to 15 November 18841885: 24 January 1885 to 23 December 18851886: 16 January 1886 to 4 December 18861887: 24 January 1887 to 26 December 18871888: 3 January 1888 to 28 December 18881889: 3 January 1889 to 19 December 18891890: 27 February 1890 to 13 November 18901891: 5 January 1891 to 1 December 18911892: 28 May 1892 to 20 November 18921893: 25 April 1893 to 28 December 18931894: 4 January 1894 to 28 December 18941895: 4 January 1895 to 11 December 18951896: 25 January 1896 to 26 November 18961897: 8 January 1897 to 20 September 18971898: 13 February 1898 to 3 November 18981900: 20 January 1900 to 30 August 19001901: 27 January 1901 to 19 August 19011902: 26 January 1902 to 18 December 19021903: 31 March 1903 to 25 December 19031904: 1 January 1904 to 2 November 19041905: 10 April 1905 to 31 December 19051906: 20 February 1906 to 19 November 19061907: 28 July 1907 to 28 December 19071908: 1 February 1908 to 16 October 19081909: 31 January 1909 to 31 October 19091910: 7 January 1910 to 12 December 19101911: 12 January 1911 to 26 December 19111912: 9 March 1912 to 24 December 19121913: 1 January 1913 to 27 October 19131914: 25 February 1914 to 23 November 19141915: 1 January 1915 to 23 October 19151916: 8 January 1916 to 11 December 19161917: 23 January 1917 to 12 December 19171918: 12 January 1918 to 8 October 19181928: 18 January 1928 to 25 July 19281929: 23 March 1929 to 28 December 19291930: 24 April 1930 to 24 December 19301931: 1 January 1931 to 3 December 19311932: 13 February 1932 to 1 October 19321933: 5 March 1933 to 25 December 19331934: 18 February 1934 to 30 November 19341935: 5 January 1935 to 22 October 19351936: 5 January 1936 to 23 December 19361937: 9 January 1937 to 21 August 19371938: 27 January 1938 to 8 August 19381939: 27 February 1939 to 4 November 19391940: 4 April 1940 to 28 December 19401941: 3 January 1941 to 1 October 19411942: 13 February 1942 to 9 December 19421943: 3 January 1943 to 19 November 19431944: 7 February 1944 to 12 December 19441945: 13 January 1945 to 27 December 19451946: 18 January 1946 to 29 December 194618801888189619051913193019381946JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Roto Station meeting 10 mm (0.39 in).
First to last qualifying date each year at Roto Station
YearFirst dateLast date
18801880-01-081880-12-03
18811881-01-101881-11-15
18821882-04-051882-12-06
18831883-02-271883-11-10
18841884-02-071884-11-15
18851885-01-241885-12-23
18861886-01-161886-12-04
18871887-01-241887-12-26
18881888-01-031888-12-28
18891889-01-031889-12-19
18901890-02-271890-11-13
18911891-01-051891-12-01
18921892-05-281892-11-20
18931893-04-251893-12-28
18941894-01-041894-12-28
18951895-01-041895-12-11
18961896-01-251896-11-26
18971897-01-081897-09-20
18981898-02-131898-11-03
19001900-01-201900-08-30
19011901-01-271901-08-19
19021902-01-261902-12-18
19031903-03-311903-12-25
19041904-01-011904-11-02
19051905-04-101905-12-31
19061906-02-201906-11-19
19071907-07-281907-12-28
19081908-02-011908-10-16
19091909-01-311909-10-31
19101910-01-071910-12-12
19111911-01-121911-12-26
19121912-03-091912-12-24
19131913-01-011913-10-27
19141914-02-251914-11-23
19151915-01-011915-10-23
19161916-01-081916-12-11
19171917-01-231917-12-12
19181918-01-121918-10-08
19281928-01-181928-07-25
19291929-03-231929-12-28
19301930-04-241930-12-24
19311931-01-011931-12-03
19321932-02-131932-10-01
19331933-03-051933-12-25
19341934-02-181934-11-30
19351935-01-051935-10-22
19361936-01-051936-12-23
19371937-01-091937-08-21
19381938-01-271938-08-08
19391939-02-271939-11-04
19401940-04-041940-12-28
19411941-01-031941-10-01
19421942-02-131942-12-09
19431943-01-031943-11-19
19441944-02-071944-12-12
19451945-01-131945-12-27
19461946-01-181946-12-29

Every Fixed Threshold

Fixed thresholds at Roto Station
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
10 mm (0.39 in): Days with 10 mm or more rain5722189411
25 mm (0.98 in): Days with 25 mm or more rain50818894
50 mm (1.97 in): Days with 50 mm or more rain17318871

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1880.

Download the Data

  • Data for Roto Station 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).