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Built 2026-10-19 (19 October 2026)

Zachary Threshold Days by Year (USC00169930)

4 fixed thresholds counted per year at Zachary (USC00169930): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Zachary Thresholds

  • Zachary: days with 10 mm (0.39 in) or more of precipitation in 29 years, most in 1989 with 57.
  • Zachary: days with 25 mm (0.98 in) or more of precipitation in 29 years, most in 1983 with 29.
  • Zachary: days with 50 mm (1.97 in) or more of precipitation in 29 years, most in 1989 with 14.
  • Zachary: days with 100 mm (3.94 in) or more of precipitation in 19 years, most in 1983 with 3.
  • 4 fixed thresholds have at least one qualifying day at Zachary.
29 years with a qualifying day
Days with 10 mm (0.39 in) or more of precipitation per year at Zachary Days per year at Zachary with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 57 in 1989. 02040601975: 531976: 371977: 551978: 431979: 451980: 471981: 401982: 411983: 491984: 461985: 481986: 441987: 501988: 551989: 571991: 561992: 541993: 441994: 491999: 292000: 392001: 472002: 522003: 342004: 512005: 312006: 362007: 412008: 471975197819811984198719911994200120042007
Days per year at Zachary with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 57 in 1989.
Days with 10 mm (0.39 in) or more of precipitation per year at Zachary
YearDaysDecade average
19755346.6
19763746.6
19775546.6
19784346.6
19794546.6
19804747.7
19814047.7
19824147.7
19834947.7
19844647.7
19854847.7
19864447.7
19875047.7
19885547.7
19895747.7
19915646.4
19925446.4
19934446.4
19944946.4
19992946.4
20003942
20014742
20025242
20033442
20045142
20053142
20063642
20074142
20084742
First to last qualifying date each year at Zachary For each year, a bar from the first to the last day at Zachary meeting 10 mm (0.39 in). 1975: 16 February 1975 to 30 December 19751976: 3 January 1976 to 26 December 19761977: 3 January 1977 to 30 December 19771978: 8 January 1978 to 9 December 19781979: 7 January 1979 to 24 December 19791980: 16 January 1980 to 10 December 19801981: 7 January 1981 to 31 December 19811982: 13 January 1982 to 28 December 19821983: 1 January 1983 to 28 December 19831984: 10 January 1984 to 6 December 19841985: 1 January 1985 to 28 December 19851986: 7 January 1986 to 24 December 19861987: 4 January 1987 to 22 December 19871988: 2 January 1988 to 24 December 19881989: 1 January 1989 to 31 December 19891991: 3 January 1991 to 14 December 19911992: 9 January 1992 to 16 December 19921993: 8 January 1993 to 29 December 19931994: 18 January 1994 to 29 December 19941999: 2 January 1999 to 21 December 19992000: 4 January 2000 to 28 December 20002001: 7 January 2001 to 28 December 20012002: 6 January 2002 to 31 December 20022003: 7 February 2003 to 30 December 20032004: 9 January 2004 to 23 December 20042005: 8 January 2005 to 25 December 20052006: 13 January 2006 to 31 December 20062007: 5 January 2007 to 26 November 20072008: 11 January 2008 to 29 December 200819751979198319871992200020042008JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Zachary meeting 10 mm (0.39 in).
First to last qualifying date each year at Zachary
YearFirst dateLast date
19751975-02-161975-12-30
19761976-01-031976-12-26
19771977-01-031977-12-30
19781978-01-081978-12-09
19791979-01-071979-12-24
19801980-01-161980-12-10
19811981-01-071981-12-31
19821982-01-131982-12-28
19831983-01-011983-12-28
19841984-01-101984-12-06
19851985-01-011985-12-28
19861986-01-071986-12-24
19871987-01-041987-12-22
19881988-01-021988-12-24
19891989-01-011989-12-31
19911991-01-031991-12-14
19921992-01-091992-12-16
19931993-01-081993-12-29
19941994-01-181994-12-29
19991999-01-021999-12-21
20002000-01-042000-12-28
20012001-01-072001-12-28
20022002-01-062002-12-31
20032003-02-072003-12-30
20042004-01-092004-12-23
20052005-01-082005-12-25
20062006-01-132006-12-31
20072007-01-052007-11-26
20082008-01-112008-12-29

Every Fixed Threshold

Fixed thresholds at Zachary
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
10 mm (0.39 in): Days with 10 mm or more rain2957198947
25 mm (0.98 in): Days with 25 mm or more rain2929198318
50 mm (1.97 in): Days with 50 mm or more rain291419895
100 mm (3.94 in): Days with 100 mm or more rain19319831

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1975.

Download the Data

  • Data for Zachary 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).