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Built 2026-10-19 (19 October 2026)

Castanhao Threshold Days by Year (BR000538008)

4 fixed thresholds counted per year at Castanhao (BR000538008): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Castanhao Thresholds

  • Castanhao: days with 10 mm (0.39 in) or more of precipitation in 37 years, most in 1973 with 41.
  • Castanhao: days with 25 mm (0.98 in) or more of precipitation in 37 years, most in 1974 with 20.
  • Castanhao: days with 50 mm (1.97 in) or more of precipitation in 30 years, most in 1977 with 7.
  • Castanhao: days with 100 mm (3.94 in) or more of precipitation in 4 years, most in 1972 with 1.
  • 4 fixed thresholds have at least one qualifying day at Castanhao.
37 years with a qualifying day
Days with 10 mm (0.39 in) or more of precipitation per year at Castanhao Days per year at Castanhao with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 41 in 1973. 02040601962: 201963: 341964: 371965: 271966: 111967: 331968: 171969: 241970: 171971: 301972: 241973: 411974: 391975: 411976: 131977: 351979: 131980: 241981: 211982: 191983: 131984: 351986: 351987: 191988: 301989: 381990: 121991: 201992: 181993: 51994: 371995: 301996: 351997: 201998: 81999: 202000: 271962196619701974197919831988199219962000
Days per year at Castanhao with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 41 in 1973.
Days with 10 mm (0.39 in) or more of precipitation per year at Castanhao
YearDaysDecade average
19622025.4
19633425.4
19643725.4
19652725.4
19661125.4
19673325.4
19681725.4
19692425.4
19701728.1
19713028.1
19722428.1
19734128.1
19743928.1
19754128.1
19761328.1
19773528.1
19791328.1
19802426
19812126
19821926
19831326
19843526
19863526
19871926
19883026
19893826
19901220.5
19912020.5
19921820.5
1993520.5
19943720.5
19953020.5
19963520.5
19972020.5
1998820.5
19992020.5
20002727
First to last qualifying date each year at Castanhao For each year, a bar from the first to the last day at Castanhao meeting 10 mm (0.39 in). 1962: 29 January 1962 to 17 December 19621963: 13 January 1963 to 29 December 19631964: 1 January 1964 to 15 September 19641965: 25 January 1965 to 4 October 19651966: 12 February 1966 to 12 August 19661967: 2 February 1967 to 13 June 19671968: 24 January 1968 to 27 December 19681969: 25 January 1969 to 23 July 19691970: 19 January 1970 to 31 May 19701971: 12 January 1971 to 25 July 19711972: 8 January 1972 to 23 December 19721973: 4 January 1973 to 13 December 19731974: 11 January 1974 to 17 July 19741975: 21 January 1975 to 6 December 19751976: 4 February 1976 to 6 October 19761977: 14 January 1977 to 30 December 19771979: 16 January 1979 to 19 November 19791980: 16 January 1980 to 18 June 19801981: 19 January 1981 to 23 December 19811982: 27 January 1982 to 27 November 19821983: 22 January 1983 to 19 April 19831984: 9 January 1984 to 18 July 19841986: 6 January 1986 to 13 June 19861987: 9 February 1987 to 7 July 19871988: 18 February 1988 to 19 December 19881989: 15 February 1989 to 25 December 19891990: 8 February 1990 to 11 May 19901991: 18 January 1991 to 2 June 19911992: 25 January 1992 to 6 April 19921993: 29 March 1993 to 23 May 19931994: 5 January 1994 to 29 December 19941995: 8 January 1995 to 24 July 19951996: 14 January 1996 to 18 July 19961997: 9 February 1997 to 23 December 19971998: 20 January 1998 to 25 August 19981999: 8 January 1999 to 31 December 19992000: 7 January 2000 to 15 December 200019621967197219771983198919941999JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Castanhao meeting 10 mm (0.39 in).
First to last qualifying date each year at Castanhao
YearFirst dateLast date
19621962-01-291962-12-17
19631963-01-131963-12-29
19641964-01-011964-09-15
19651965-01-251965-10-04
19661966-02-121966-08-12
19671967-02-021967-06-13
19681968-01-241968-12-27
19691969-01-251969-07-23
19701970-01-191970-05-31
19711971-01-121971-07-25
19721972-01-081972-12-23
19731973-01-041973-12-13
19741974-01-111974-07-17
19751975-01-211975-12-06
19761976-02-041976-10-06
19771977-01-141977-12-30
19791979-01-161979-11-19
19801980-01-161980-06-18
19811981-01-191981-12-23
19821982-01-271982-11-27
19831983-01-221983-04-19
19841984-01-091984-07-18
19861986-01-061986-06-13
19871987-02-091987-07-07
19881988-02-181988-12-19
19891989-02-151989-12-25
19901990-02-081990-05-11
19911991-01-181991-06-02
19921992-01-251992-04-06
19931993-03-291993-05-23
19941994-01-051994-12-29
19951995-01-081995-07-24
19961996-01-141996-07-18
19971997-02-091997-12-23
19981998-01-201998-08-25
19991999-01-081999-12-31
20002000-01-072000-12-15

Every Fixed Threshold

Fixed thresholds at Castanhao
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
10 mm (0.39 in): Days with 10 mm or more rain3741197327
25 mm (0.98 in): Days with 25 mm or more rain3720197410
50 mm (1.97 in): Days with 50 mm or more rain30719772
100 mm (3.94 in): Days with 100 mm or more rain4119721

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1962.

Download the Data

  • Data for Castanhao 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).