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Data as of 2025-12-31
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Built 2026-10-19 (19 October 2026)

Tiros Threshold Days by Year (BR001845014)

4 fixed thresholds counted per year at Tiros (BR001845014): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Tiros Thresholds

  • Tiros: days with 10 mm (0.39 in) or more of precipitation in 31 years, most in 1983 with 80.
  • Tiros: days with 25 mm (0.98 in) or more of precipitation in 31 years, most in 1983 with 29.
  • Tiros: days with 50 mm (1.97 in) or more of precipitation in 31 years, most in 1983 with 9.
  • Tiros: days with 100 mm (3.94 in) or more of precipitation in 11 years, most in 1983 with 2.
  • 4 fixed thresholds have at least one qualifying day at Tiros.
31 years with a qualifying day
Days with 10 mm (0.39 in) or more of precipitation per year at Tiros Days per year at Tiros with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 80 in 1983. 0204060801960: 551961: 441962: 711965: 531967: 511968: 321969: 431971: 481975: 471979: 531980: 561981: 491982: 601983: 801984: 291985: 441986: 421987: 411988: 511989: 571990: 361991: 561992: 571993: 291994: 541995: 511996: 531997: 571998: 481999: 432000: 5819601967197519821986199019941998
Days per year at Tiros with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 80 in 1983.
Days with 10 mm (0.39 in) or more of precipitation per year at Tiros
YearDaysDecade average
19605549.9
19614449.9
19627149.9
19655349.9
19675149.9
19683249.9
19694349.9
19714849.3
19754749.3
19795349.3
19805650.9
19814950.9
19826050.9
19838050.9
19842950.9
19854450.9
19864250.9
19874150.9
19885150.9
19895750.9
19903648.4
19915648.4
19925748.4
19932948.4
19945448.4
19955148.4
19965348.4
19975748.4
19984848.4
19994348.4
20005858
First to last qualifying date each year at Tiros For each year, a bar from the first to the last day at Tiros meeting 10 mm (0.39 in). 1960: 1 January 1960 to 31 December 19601961: 1 January 1961 to 30 December 19611962: 2 January 1962 to 30 December 19621965: 4 January 1965 to 25 December 19651967: 5 January 1967 to 28 December 19671968: 3 January 1968 to 9 December 19681969: 18 January 1969 to 31 December 19691971: 13 January 1971 to 31 December 19711975: 1 January 1975 to 27 December 19751979: 5 January 1979 to 31 December 19791980: 1 January 1980 to 30 December 19801981: 10 January 1981 to 29 December 19811982: 1 January 1982 to 31 December 19821983: 1 January 1983 to 31 December 19831984: 7 January 1984 to 27 November 19841985: 9 January 1985 to 31 December 19851986: 3 February 1986 to 31 December 19861987: 14 January 1987 to 27 November 19871988: 2 January 1988 to 25 December 19881989: 3 January 1989 to 31 December 19891990: 3 January 1990 to 30 December 19901991: 5 January 1991 to 31 December 19911992: 1 January 1992 to 28 December 19921993: 4 January 1993 to 27 November 19931994: 1 January 1994 to 25 December 19941995: 4 January 1995 to 31 December 19951996: 1 January 1996 to 26 December 19961997: 2 January 1997 to 18 December 19971998: 1 January 1998 to 25 December 19981999: 1 January 1999 to 27 December 19992000: 1 January 2000 to 25 December 200019601967197519821986199019941998JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Tiros meeting 10 mm (0.39 in).
First to last qualifying date each year at Tiros
YearFirst dateLast date
19601960-01-011960-12-31
19611961-01-011961-12-30
19621962-01-021962-12-30
19651965-01-041965-12-25
19671967-01-051967-12-28
19681968-01-031968-12-09
19691969-01-181969-12-31
19711971-01-131971-12-31
19751975-01-011975-12-27
19791979-01-051979-12-31
19801980-01-011980-12-30
19811981-01-101981-12-29
19821982-01-011982-12-31
19831983-01-011983-12-31
19841984-01-071984-11-27
19851985-01-091985-12-31
19861986-02-031986-12-31
19871987-01-141987-11-27
19881988-01-021988-12-25
19891989-01-031989-12-31
19901990-01-031990-12-30
19911991-01-051991-12-31
19921992-01-011992-12-28
19931993-01-041993-11-27
19941994-01-011994-12-25
19951995-01-041995-12-31
19961996-01-011996-12-26
19971997-01-021997-12-18
19981998-01-011998-12-25
19991999-01-011999-12-27
20002000-01-012000-12-25

Every Fixed Threshold

Fixed thresholds at Tiros
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
10 mm (0.39 in): Days with 10 mm or more rain3180198358
25 mm (0.98 in): Days with 25 mm or more rain3129198322
50 mm (1.97 in): Days with 50 mm or more rain31919836
100 mm (3.94 in): Days with 100 mm or more rain11219832

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1960.

Download the Data

  • Data for Tiros 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).