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Built 2026-10-19 (19 October 2026)

Borinquen AP Threshold Days by Year (RQW00011603)

9 fixed thresholds counted per year at Borinquen AP (RQW00011603): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Borinquen AP Thresholds

  • Borinquen AP: days with a maximum temperature at or above 30 C (86 F) in 49 years, most in 1980 with 294.
  • Borinquen AP: days with 10 mm (0.39 in) or more of precipitation in 49 years, most in 1952 with 55.
  • Borinquen AP: days with 25 mm (0.98 in) or more of precipitation in 49 years, most in 2003 with 27.
  • Borinquen AP: nights with a minimum temperature at or above 20 C (68 F) in 48 years, most in 1960 with 363.
  • 9 fixed thresholds have at least one qualifying day at Borinquen AP.
49 years with a qualifying day
Days at or above 30 C (86 F) per year at Borinquen AP Days per year at Borinquen AP with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 294 in 1980. 01002003001942: 471945: 371947: 521948: 291949: 281950: 1081951: 1941952: 1851953: 1591954: 211955: 501956: 1031957: 1151958: 1641959: 1461960: 1801961: 621962: 561963: 861964: 651965: 281966: 641967: 481968: 1601969: 2001970: 1181971: 1261972: 401974: 1301975: 1461976: 1151979: 2111980: 2941982: 2761983: 2721984: 2281987: 2711988: 2621989: 2081990: 1921993: 2301999: 1812002: 1922003: 1942004: 1622005: 1762012: 2822025: 1802026: 1731942195019551960196519701976198419932005
Days per year at Borinquen AP with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 294 in 1980.
Days at or above 30 C (86 F) per year at Borinquen AP
YearDaysDecade average
19424738.6
19453738.6
19475238.6
19482938.6
19492838.6
1950108124.5
1951194124.5
1952185124.5
1953159124.5
195421124.5
195550124.5
1956103124.5
1957115124.5
1958164124.5
1959146124.5
196018094.9
19616294.9
19625694.9
19638694.9
19646594.9
19652894.9
19666494.9
19674894.9
196816094.9
196920094.9
1970118126.6
1971126126.6
197240126.6
1974130126.6
1975146126.6
1976115126.6
1979211126.6
1980294258.7
1982276258.7
1983272258.7
1984228258.7
1987271258.7
1988262258.7
1989208258.7
1990192201
1993230201
1999181201
2002192181
2003194181
2004162181
2005176181
2012282282
2025180176.5
2026173176.5
First to last qualifying date each year at Borinquen AP For each year, a bar from the first to the last day at Borinquen AP meeting 30 C (86 F). 1942: 24 February 1942 to 15 December 19421945: 3 June 1945 to 14 November 19451947: 3 March 1947 to 7 November 19471948: 30 March 1948 to 2 November 19481949: 9 May 1949 to 25 November 19491950: 28 May 1950 to 21 November 19501951: 6 April 1951 to 29 November 19511952: 27 February 1952 to 16 November 19521953: 28 March 1953 to 12 November 19531954: 8 May 1954 to 25 October 19541955: 27 April 1955 to 10 November 19551956: 25 March 1956 to 1 November 19561957: 21 March 1957 to 26 November 19571958: 3 January 1958 to 11 December 19581959: 12 March 1959 to 2 December 19591960: 19 March 1960 to 12 December 19601961: 5 April 1961 to 8 November 19611962: 6 March 1962 to 9 December 19621963: 8 January 1963 to 22 December 19631964: 14 January 1964 to 10 November 19641965: 7 March 1965 to 26 October 19651966: 10 April 1966 to 2 November 19661967: 29 May 1967 to 15 November 19671968: 20 February 1968 to 22 November 19681969: 12 January 1969 to 21 December 19691970: 12 February 1970 to 26 December 19701971: 1 January 1971 to 9 October 19711972: 8 April 1972 to 15 November 19721974: 31 March 1974 to 17 November 19741975: 11 March 1975 to 14 November 19751976: 8 April 1976 to 15 December 19761979: 26 January 1979 to 31 December 19791980: 3 January 1980 to 28 December 19801982: 2 January 1982 to 14 December 19821983: 19 January 1983 to 26 December 19831984: 9 January 1984 to 14 December 19841987: 1 January 1987 to 31 December 19871988: 1 January 1988 to 25 December 19881989: 1 January 1989 to 31 December 19891990: 15 January 1990 to 23 December 19901993: 27 January 1993 to 31 December 19931999: 21 March 1999 to 3 December 19992002: 24 February 2002 to 7 December 20022003: 5 January 2003 to 29 December 20032004: 6 January 2004 to 8 November 20042005: 28 February 2005 to 12 December 20052012: 1 January 2012 to 31 December 20122025: 27 February 2025 to 22 December 20252026: 19 January 2026 to 12 October 20261942195219591966197419842002JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Borinquen AP meeting 30 C (86 F).
First to last qualifying date each year at Borinquen AP
YearFirst dateLast date
19421942-02-241942-12-15
19451945-06-031945-11-14
19471947-03-031947-11-07
19481948-03-301948-11-02
19491949-05-091949-11-25
19501950-05-281950-11-21
19511951-04-061951-11-29
19521952-02-271952-11-16
19531953-03-281953-11-12
19541954-05-081954-10-25
19551955-04-271955-11-10
19561956-03-251956-11-01
19571957-03-211957-11-26
19581958-01-031958-12-11
19591959-03-121959-12-02
19601960-03-191960-12-12
19611961-04-051961-11-08
19621962-03-061962-12-09
19631963-01-081963-12-22
19641964-01-141964-11-10
19651965-03-071965-10-26
19661966-04-101966-11-02
19671967-05-291967-11-15
19681968-02-201968-11-22
19691969-01-121969-12-21
19701970-02-121970-12-26
19711971-01-011971-10-09
19721972-04-081972-11-15
19741974-03-311974-11-17
19751975-03-111975-11-14
19761976-04-081976-12-15
19791979-01-261979-12-31
19801980-01-031980-12-28
19821982-01-021982-12-14
19831983-01-191983-12-26
19841984-01-091984-12-14
19871987-01-011987-12-31
19881988-01-011988-12-25
19891989-01-011989-12-31
19901990-01-151990-12-23
19931993-01-271993-12-31
19991999-03-211999-12-03
20022002-02-242002-12-07
20032003-01-052003-12-29
20042004-01-062004-11-08
20052005-02-282005-12-12
20122012-01-012012-12-31
20252025-02-272025-12-22
20262026-01-192026-10-12

Every Fixed Threshold

Fixed thresholds at Borinquen AP
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days492941980173
35 C (95 F): Days121320121
90 F (32.2 C): Days4317919874
20 C (68 F): Tropical nights (min483631960273
25 C (77 F): Days with min461212025126
10 mm (0.39 in): Days with 10 mm or more rain4955195244
25 mm (0.98 in): Days with 25 mm or more rain4927200314
50 mm (1.97 in): Days with 50 mm or more rain45919705
100 mm (3.94 in): Days with 100 mm or more rain12319611

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1942.

Download the Data

  • Data for Borinquen AP 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 (2026-10-17).