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Built 2026-10-18 (18 October 2026)

Toa Baja 1 SSW Threshold Days by Year

5 fixed thresholds counted per year at Toa Baja 1 SSW (RQC00669421): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Toa Baja 1 SSW Thresholds

  • Toa Baja 1 SSW: days with 10 mm (0.39 in) or more of precipitation in 35 years, most in 1979 with 74.
  • Toa Baja 1 SSW: days with 25 mm (0.98 in) or more of precipitation in 35 years, most in 1970 with 28.
  • Toa Baja 1 SSW: days with 50 mm (1.97 in) or more of precipitation in 35 years, most in 1987 with 14.
  • Toa Baja 1 SSW: days with 100 mm (3.94 in) or more of precipitation in 20 years, most in 1970 with 4.
  • 5 fixed thresholds have at least one qualifying day at Toa Baja 1 SSW.
35 years with a qualifying day
Days with 10 mm (0.39 in) or more of precipitation per year at Toa Baja 1 SSW Days per year at Toa Baja 1 SSW with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 74 in 1979. 0204060801955: 541956: 631957: 371958: 641959: 441960: 541961: 501962: 531963: 591965: 651966: 551967: 371969: 401970: 631972: 401973: 351974: 571975: 601976: 441977: 431978: 451979: 741980: 491981: 681982: 591983: 431984: 461985: 511986: 511987: 541988: 561989: 551990: 591991: 421993: 44195519591963196919741978198219861990
Days per year at Toa Baja 1 SSW with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 74 in 1979.
Days with 10 mm (0.39 in) or more of precipitation per year at Toa Baja 1 SSW
YearDaysDecade average
19555452.4
19566352.4
19573752.4
19586452.4
19594452.4
19605451.6
19615051.6
19625351.6
19635951.6
19656551.6
19665551.6
19673751.6
19694051.6
19706351.2
19724051.2
19733551.2
19745751.2
19756051.2
19764451.2
19774351.2
19784551.2
19797451.2
19804953.2
19816853.2
19825953.2
19834353.2
19844653.2
19855153.2
19865153.2
19875453.2
19885653.2
19895553.2
19905948.3
19914248.3
19934448.3
First to last qualifying date each year at Toa Baja 1 SSW For each year, a bar from the first to the last day at Toa Baja 1 SSW meeting 10 mm (0.39 in). 1955: 1 January 1955 to 30 December 19551956: 29 January 1956 to 24 December 19561957: 6 January 1957 to 30 December 19571958: 11 January 1958 to 30 December 19581959: 13 January 1959 to 27 December 19591960: 16 January 1960 to 23 December 19601961: 4 January 1961 to 9 December 19611962: 6 January 1962 to 22 December 19621963: 3 January 1963 to 17 December 19631965: 27 March 1965 to 30 December 19651966: 3 January 1966 to 31 December 19661967: 8 January 1967 to 13 November 19671969: 17 January 1969 to 19 December 19691970: 11 January 1970 to 28 December 19701972: 6 February 1972 to 29 December 19721973: 1 January 1973 to 8 December 19731974: 7 January 1974 to 31 December 19741975: 26 January 1975 to 25 December 19751976: 6 January 1976 to 28 December 19761977: 15 January 1977 to 13 December 19771978: 30 January 1978 to 7 December 19781979: 7 January 1979 to 21 December 19791980: 10 January 1980 to 25 December 19801981: 19 January 1981 to 28 December 19811982: 2 January 1982 to 29 December 19821983: 12 March 1983 to 31 December 19831984: 25 January 1984 to 31 December 19841985: 2 January 1985 to 16 November 19851986: 4 January 1986 to 25 December 19861987: 31 January 1987 to 26 December 19871988: 1 January 1988 to 29 December 19881989: 9 January 1989 to 29 December 19891990: 19 January 1990 to 28 December 19901991: 1 January 1991 to 8 December 19911993: 20 February 1993 to 20 December 19931955196019661973197819831988JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Toa Baja 1 SSW meeting 10 mm (0.39 in).
First to last qualifying date each year at Toa Baja 1 SSW
YearFirst dateLast date
19551955-01-011955-12-30
19561956-01-291956-12-24
19571957-01-061957-12-30
19581958-01-111958-12-30
19591959-01-131959-12-27
19601960-01-161960-12-23
19611961-01-041961-12-09
19621962-01-061962-12-22
19631963-01-031963-12-17
19651965-03-271965-12-30
19661966-01-031966-12-31
19671967-01-081967-11-13
19691969-01-171969-12-19
19701970-01-111970-12-28
19721972-02-061972-12-29
19731973-01-011973-12-08
19741974-01-071974-12-31
19751975-01-261975-12-25
19761976-01-061976-12-28
19771977-01-151977-12-13
19781978-01-301978-12-07
19791979-01-071979-12-21
19801980-01-101980-12-25
19811981-01-191981-12-28
19821982-01-021982-12-29
19831983-03-121983-12-31
19841984-01-251984-12-31
19851985-01-021985-11-16
19861986-01-041986-12-25
19871987-01-311987-12-26
19881988-01-011988-12-29
19891989-01-091989-12-29
19901990-01-191990-12-28
19911991-01-011991-12-08
19931993-02-201993-12-20

Every Fixed Threshold

Fixed thresholds at Toa Baja 1 SSW
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
10 mm (0.39 in): Days with 10 mm or more rain3574197944
25 mm (0.98 in): Days with 25 mm or more rain3528197015
50 mm (1.97 in): Days with 50 mm or more rain351419873
100 mm (3.94 in): Days with 100 mm or more rain20419701
200 mm (7.87 in): Days with 200 mm or more rain2219731

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1955.

Download the Data

  • Data for Toa Baja 1 SSW 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 2026-10-16 (16 October 2026). Threshold counts are computed by this site.

Data as of . Last revised (2025-12-31).