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Built 2026-10-19 (19 October 2026)

Arivaca Threshold Days by Year (USC00020380)

4 fixed thresholds counted per year at Arivaca (USC00020380): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Arivaca Thresholds

  • Arivaca: days with 10 mm (0.39 in) or more of precipitation in 61 years, most in 1993 with 28.
  • Arivaca: days with 25 mm (0.98 in) or more of precipitation in 61 years, most in 1984 with 8.
  • Arivaca: days with 50 mm (1.97 in) or more of precipitation in 25 years, most in 1983 with 2.
  • Arivaca: days with 10 cm (3.9 in) or more of snowfall in 4 years, most in 1971 with 2.
  • 4 fixed thresholds have at least one qualifying day at Arivaca.
61 years with a qualifying day
Days with 10 mm (0.39 in) or more of precipitation per year at Arivaca Days per year at Arivaca with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 28 in 1993. 01020301956: 71957: 121958: 141959: 151960: 181961: 151962: 141963: 151964: 171965: 171966: 181967: 161968: 91969: 111970: 101971: 191972: 151973: 91974: 121975: 101976: 171977: 131978: 221979: 101980: 101981: 111982: 161983: 221984: 221985: 161986: 121987: 161988: 191989: 91990: 171991: 111992: 151993: 281994: 171995: 201996: 191997: 141998: 251999: 102000: 172001: 162002: 92003: 202004: 122010: 162011: 122015: 132018: 152019: 192020: 82021: 172022: 152023: 72024: 182025: 92026: 13195619631970197719841991199820102022
Days per year at Arivaca with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 28 in 1993.
Days with 10 mm (0.39 in) or more of precipitation per year at Arivaca
YearDaysDecade average
1956712
19571212
19581412
19591512
19601815
19611515
19621415
19631515
19641715
19651715
19661815
19671615
1968915
19691115
19701013.7
19711913.7
19721513.7
1973913.7
19741213.7
19751013.7
19761713.7
19771313.7
19782213.7
19791013.7
19801015.3
19811115.3
19821615.3
19832215.3
19842215.3
19851615.3
19861215.3
19871615.3
19881915.3
1989915.3
19901717.6
19911117.6
19921517.6
19932817.6
19941717.6
19952017.6
19961917.6
19971417.6
19982517.6
19991017.6
20001714.8
20011614.8
2002914.8
20032014.8
20041214.8
20101615
20111215
20151315
20181515
20191915
2020812.4
20211712.4
20221512.4
2023712.4
20241812.4
2025912.4
20261312.4
First to last qualifying date each year at Arivaca For each year, a bar from the first to the last day at Arivaca meeting 10 mm (0.39 in). 1956: 29 January 1956 to 30 July 19561957: 8 January 1957 to 31 October 19571958: 4 February 1958 to 16 November 19581959: 9 February 1959 to 25 December 19591960: 11 January 1960 to 30 December 19601961: 3 July 1961 to 15 December 19611962: 13 January 1962 to 18 December 19621963: 11 February 1963 to 21 November 19631964: 3 March 1964 to 15 November 19641965: 6 February 1965 to 23 December 19651966: 18 January 1966 to 29 September 19661967: 25 June 1967 to 20 December 19671968: 10 March 1968 to 6 August 19681969: 15 July 1969 to 16 November 19691970: 2 March 1970 to 4 September 19701971: 17 February 1971 to 4 December 19711972: 7 June 1972 to 28 December 19721973: 21 February 1973 to 27 July 19731974: 9 January 1974 to 8 November 19741975: 11 March 1975 to 29 November 19751976: 5 February 1976 to 31 December 19761977: 26 March 1977 to 28 December 19771978: 11 January 1978 to 31 December 19781979: 17 January 1979 to 8 November 19791980: 13 February 1980 to 24 August 19801981: 12 January 1981 to 29 November 19811982: 13 January 1982 to 23 December 19821983: 20 January 1983 to 2 December 19831984: 5 January 1984 to 27 December 19841985: 24 January 1985 to 30 November 19851986: 1 February 1986 to 17 December 19861987: 25 February 1987 to 25 December 19871988: 18 January 1988 to 22 October 19881989: 4 January 1989 to 29 December 19891990: 2 February 1990 to 28 December 19901991: 17 January 1991 to 18 December 19911992: 13 February 1992 to 28 December 19921993: 6 January 1993 to 15 November 19931994: 8 February 1994 to 26 December 19941995: 5 January 1995 to 6 November 19951996: 2 February 1996 to 29 November 19961997: 6 January 1997 to 22 December 19971998: 4 February 1998 to 17 December 19981999: 1 April 1999 to 13 September 19992000: 6 March 2000 to 11 November 20002001: 12 January 2001 to 11 December 20012002: 13 July 2002 to 22 December 20022003: 12 February 2003 to 13 November 20032004: 24 January 2004 to 6 December 20042010: 21 January 2010 to 30 December 20102011: 6 July 2011 to 14 December 20112015: 13 April 2015 to 21 October 20152018: 15 February 2018 to 26 December 20182019: 1 January 2019 to 25 December 20192020: 21 January 2020 to 1 September 20202021: 25 January 2021 to 31 December 20212022: 30 March 2022 to 13 December 20222023: 2 January 2023 to 23 December 20232024: 22 January 2024 to 17 September 20242025: 2 June 2025 to 23 November 20252026: 8 January 2026 to 16 September 202619561964197219801988199620042022JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Arivaca meeting 10 mm (0.39 in).
First to last qualifying date each year at Arivaca
YearFirst dateLast date
19561956-01-291956-07-30
19571957-01-081957-10-31
19581958-02-041958-11-16
19591959-02-091959-12-25
19601960-01-111960-12-30
19611961-07-031961-12-15
19621962-01-131962-12-18
19631963-02-111963-11-21
19641964-03-031964-11-15
19651965-02-061965-12-23
19661966-01-181966-09-29
19671967-06-251967-12-20
19681968-03-101968-08-06
19691969-07-151969-11-16
19701970-03-021970-09-04
19711971-02-171971-12-04
19721972-06-071972-12-28
19731973-02-211973-07-27
19741974-01-091974-11-08
19751975-03-111975-11-29
19761976-02-051976-12-31
19771977-03-261977-12-28
19781978-01-111978-12-31
19791979-01-171979-11-08
19801980-02-131980-08-24
19811981-01-121981-11-29
19821982-01-131982-12-23
19831983-01-201983-12-02
19841984-01-051984-12-27
19851985-01-241985-11-30
19861986-02-011986-12-17
19871987-02-251987-12-25
19881988-01-181988-10-22
19891989-01-041989-12-29
19901990-02-021990-12-28
19911991-01-171991-12-18
19921992-02-131992-12-28
19931993-01-061993-11-15
19941994-02-081994-12-26
19951995-01-051995-11-06
19961996-02-021996-11-29
19971997-01-061997-12-22
19981998-02-041998-12-17
19991999-04-011999-09-13
20002000-03-062000-11-11
20012001-01-122001-12-11
20022002-07-132002-12-22
20032003-02-122003-11-13
20042004-01-242004-12-06
20102010-01-212010-12-30
20112011-07-062011-12-14
20152015-04-132015-10-21
20182018-02-152018-12-26
20192019-01-012019-12-25
20202020-01-212020-09-01
20212021-01-252021-12-31
20222022-03-302022-12-13
20232023-01-022023-12-23
20242024-01-222024-09-17
20252025-06-022025-11-23
20262026-01-082026-09-16

Every Fixed Threshold

Fixed thresholds at Arivaca
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
10 mm (0.39 in): Days with 10 mm or more rain6128199313
25 mm (0.98 in): Days with 25 mm or more rain61819842
50 mm (1.97 in): Days with 50 mm or more rain25219831
10 cm (3.9 in): Days with 10 cm or more snowfall4219711

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1956.

Download the Data

  • Data for Arivaca 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).