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

Watson Threshold Days by Year (USC00419504)

5 fixed thresholds counted per year at Watson (USC00419504): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Watson Thresholds

  • Watson: days with 10 mm (0.39 in) or more of precipitation in 51 years, most in 2004 with 39.
  • Watson: days with 25 mm (0.98 in) or more of precipitation in 51 years, most in 2004 with 15.
  • Watson: days with 50 mm (1.97 in) or more of precipitation in 46 years, most in 2007 with 6.
  • Watson: days with 100 mm (3.94 in) or more of precipitation in 13 years, most in 1974 with 2.
  • 5 fixed thresholds have at least one qualifying day at Watson.
51 years with a qualifying day
Days with 10 mm (0.39 in) or more of precipitation per year at Watson Days per year at Watson with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 39 in 2004. 0102030401968: 241969: 241970: 201971: 261972: 221973: 301974: 251975: 251977: 191978: 231979: 291980: 191981: 251982: 211983: 181984: 221985: 211986: 291987: 251988: 151989: 241990: 261991: 291992: 341993: 311994: 251995: 191996: 301997: 361998: 281999: 182000: 302001: 232002: 252003: 212004: 392005: 232006: 232007: 382008: 122009: 312010: 212011: 122012: 182013: 252014: 222015: 282016: 302017: 272018: 272019: 23196819741981198719931999200520112017
Days per year at Watson with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 39 in 2004.
Days with 10 mm (0.39 in) or more of precipitation per year at Watson
YearDaysDecade average
19682424
19692424
19702024.3
19712624.3
19722224.3
19733024.3
19742524.3
19752524.3
19771924.3
19782324.3
19792924.3
19801921.9
19812521.9
19822121.9
19831821.9
19842221.9
19852121.9
19862921.9
19872521.9
19881521.9
19892421.9
19902627.6
19912927.6
19923427.6
19933127.6
19942527.6
19951927.6
19963027.6
19973627.6
19982827.6
19991827.6
20003026.5
20012326.5
20022526.5
20032126.5
20043926.5
20052326.5
20062326.5
20073826.5
20081226.5
20093126.5
20102123.3
20111223.3
20121823.3
20132523.3
20142223.3
20152823.3
20163023.3
20172723.3
20182723.3
20192323.3
First to last qualifying date each year at Watson For each year, a bar from the first to the last day at Watson meeting 10 mm (0.39 in). 1968: 19 February 1968 to 1 December 19681969: 31 January 1969 to 6 December 19691970: 5 January 1970 to 19 October 19701971: 26 February 1971 to 10 December 19711972: 2 January 1972 to 15 December 19721973: 11 January 1973 to 19 December 19731974: 24 January 1974 to 26 December 19741975: 12 January 1975 to 25 December 19751977: 13 January 1977 to 30 November 19771978: 13 January 1978 to 31 December 19781979: 6 January 1979 to 29 December 19791980: 22 January 1980 to 9 December 19801981: 19 January 1981 to 23 October 19811982: 20 February 1982 to 27 December 19821983: 21 January 1983 to 27 November 19831984: 9 January 1984 to 31 December 19841985: 17 January 1985 to 11 December 19851986: 4 February 1986 to 23 December 19861987: 18 January 1987 to 26 December 19871988: 3 March 1988 to 10 December 19881989: 13 January 1989 to 31 October 19891990: 1 February 1990 to 23 November 19901991: 10 January 1991 to 22 December 19911992: 18 January 1992 to 15 December 19921993: 29 January 1993 to 22 December 19931994: 21 January 1994 to 29 December 19941995: 26 February 1995 to 18 December 19951996: 5 April 1996 to 16 December 19961997: 7 January 1997 to 21 December 19971998: 7 January 1998 to 11 December 19981999: 13 March 1999 to 12 December 19992000: 8 January 2000 to 26 December 20002001: 11 January 2001 to 16 December 20012002: 6 February 2002 to 31 December 20022003: 12 January 2003 to 18 November 20032004: 15 January 2004 to 24 November 20042005: 28 January 2005 to 25 November 20052006: 29 January 2006 to 30 December 20062007: 4 January 2007 to 15 December 20072008: 7 March 2008 to 12 November 20082009: 9 February 2009 to 2 December 20092010: 16 January 2010 to 25 December 20102011: 9 January 2011 to 5 December 20112012: 10 January 2012 to 14 October 20122013: 10 January 2013 to 22 December 20132014: 7 April 2014 to 23 November 20142015: 3 January 2015 to 13 December 20152016: 23 February 2016 to 3 December 20162017: 14 January 2017 to 17 December 20172018: 21 February 2018 to 27 December 20182019: 2 January 2019 to 7 November 201919681975198319901997200420112018JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Watson meeting 10 mm (0.39 in).
First to last qualifying date each year at Watson
YearFirst dateLast date
19681968-02-191968-12-01
19691969-01-311969-12-06
19701970-01-051970-10-19
19711971-02-261971-12-10
19721972-01-021972-12-15
19731973-01-111973-12-19
19741974-01-241974-12-26
19751975-01-121975-12-25
19771977-01-131977-11-30
19781978-01-131978-12-31
19791979-01-061979-12-29
19801980-01-221980-12-09
19811981-01-191981-10-23
19821982-02-201982-12-27
19831983-01-211983-11-27
19841984-01-091984-12-31
19851985-01-171985-12-11
19861986-02-041986-12-23
19871987-01-181987-12-26
19881988-03-031988-12-10
19891989-01-131989-10-31
19901990-02-011990-11-23
19911991-01-101991-12-22
19921992-01-181992-12-15
19931993-01-291993-12-22
19941994-01-211994-12-29
19951995-02-261995-12-18
19961996-04-051996-12-16
19971997-01-071997-12-21
19981998-01-071998-12-11
19991999-03-131999-12-12
20002000-01-082000-12-26
20012001-01-112001-12-16
20022002-02-062002-12-31
20032003-01-122003-11-18
20042004-01-152004-11-24
20052005-01-282005-11-25
20062006-01-292006-12-30
20072007-01-042007-12-15
20082008-03-072008-11-12
20092009-02-092009-12-02
20102010-01-162010-12-25
20112011-01-092011-12-05
20122012-01-102012-10-14
20132013-01-102013-12-22
20142014-04-072014-11-23
20152015-01-032015-12-13
20162016-02-232016-12-03
20172017-01-142017-12-17
20182018-02-212018-12-27
20192019-01-022019-11-07

Every Fixed Threshold

Fixed thresholds at Watson
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
10 mm (0.39 in): Days with 10 mm or more rain5139200423
25 mm (0.98 in): Days with 25 mm or more rain511520048
50 mm (1.97 in): Days with 50 mm or more rain46620071
100 mm (3.94 in): Days with 100 mm or more rain13219741
10 cm (3.9 in): Days with 10 cm or more snowfall2119731

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1968.

Download the Data

  • Data for Watson 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).