Built 2026-10-18 (18 October 2026)

Onoto Threshold Days by Year

4 fixed thresholds counted per year at Onoto (ASN00037089): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Onoto Thresholds

  • Onoto: days with 10 mm (0.39 in) or more of precipitation in 32 years, most in 1917 with 20.
  • Onoto: days with 25 mm (0.98 in) or more of precipitation in 30 years, most in 1917 with 10.
  • Onoto: days with 50 mm (1.97 in) or more of precipitation in 22 years, most in 1977 with 5.
  • Onoto: days with 100 mm (3.94 in) or more of precipitation in 9 years, most in 1916 with 1.
  • 4 fixed thresholds have at least one qualifying day at Onoto.
32 years with a qualifying day
Days with 10 mm (0.39 in) or more of precipitation per year at Onoto Days per year at Onoto with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 20 in 1917. 051015201915: 71916: 131917: 201918: 71919: 61920: 191921: 101922: 71923: 51924: 91925: 31926: 41963: 121964: 51965: 61966: 81967: 61968: 91969: 61970: 81971: 141972: 31973: 141974: 81975: 61976: 131977: 121978: 111979: 61980: 81981: 81982: 419151919192319631967197119751979
Days per year at Onoto with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 20 in 1917.
Days with 10 mm (0.39 in) or more of precipitation per year at Onoto
YearDaysDecade average
1915710.6
19161310.6
19172010.6
1918710.6
1919610.6
1920198.1
1921108.1
192278.1
192358.1
192498.1
192538.1
192648.1
1963127.4
196457.4
196567.4
196687.4
196767.4
196897.4
196967.4
197089.5
1971149.5
197239.5
1973149.5
197489.5
197569.5
1976139.5
1977129.5
1978119.5
197969.5
198086.7
198186.7
198246.7
First to last qualifying date each year at Onoto For each year, a bar from the first to the last day at Onoto meeting 10 mm (0.39 in). 1915: 14 May 1915 to 29 December 19151916: 27 January 1916 to 30 December 19161917: 3 January 1917 to 24 December 19171918: 7 January 1918 to 12 March 19181919: 20 January 1919 to 5 December 19191920: 1 February 1920 to 5 December 19201921: 14 January 1921 to 24 June 19211922: 24 February 1922 to 20 December 19221923: 25 April 1923 to 27 December 19231924: 6 January 1924 to 12 December 19241925: 19 March 1925 to 18 November 19251926: 24 March 1926 to 25 September 19261963: 11 January 1963 to 29 October 19631964: 13 January 1964 to 8 October 19641965: 25 January 1965 to 21 December 19651966: 6 January 1966 to 7 November 19661967: 25 February 1967 to 29 December 19671968: 14 January 1968 to 9 July 19681969: 24 February 1969 to 22 December 19691970: 1 February 1970 to 7 December 19701971: 8 February 1971 to 20 November 19711972: 12 January 1972 to 4 March 19721973: 12 January 1973 to 16 December 19731974: 18 February 1974 to 11 November 19741975: 2 January 1975 to 25 December 19751976: 14 January 1976 to 21 December 19761977: 15 January 1977 to 16 December 19771978: 5 January 1978 to 19 November 19781979: 20 January 1979 to 26 December 19791980: 2 January 1980 to 13 October 19801981: 14 January 1981 to 22 July 19811982: 1 March 1982 to 7 December 198219151919192319631967197119751979JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Onoto meeting 10 mm (0.39 in).
First to last qualifying date each year at Onoto
YearFirst dateLast date
19151915-05-141915-12-29
19161916-01-271916-12-30
19171917-01-031917-12-24
19181918-01-071918-03-12
19191919-01-201919-12-05
19201920-02-011920-12-05
19211921-01-141921-06-24
19221922-02-241922-12-20
19231923-04-251923-12-27
19241924-01-061924-12-12
19251925-03-191925-11-18
19261926-03-241926-09-25
19631963-01-111963-10-29
19641964-01-131964-10-08
19651965-01-251965-12-21
19661966-01-061966-11-07
19671967-02-251967-12-29
19681968-01-141968-07-09
19691969-02-241969-12-22
19701970-02-011970-12-07
19711971-02-081971-11-20
19721972-01-121972-03-04
19731973-01-121973-12-16
19741974-02-181974-11-11
19751975-01-021975-12-25
19761976-01-141976-12-21
19771977-01-151977-12-16
19781978-01-051978-11-19
19791979-01-201979-12-26
19801980-01-021980-10-13
19811981-01-141981-07-22
19821982-03-011982-12-07

Every Fixed Threshold

Fixed thresholds at Onoto
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
10 mm (0.39 in): Days with 10 mm or more rain322019174
25 mm (0.98 in): Days with 25 mm or more rain301019171
50 mm (1.97 in): Days with 50 mm or more rain22519772
100 mm (3.94 in): Days with 100 mm or more rain9119161

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1915.

Download the Data

  • Data for Onoto 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).