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Built 2026-10-19 (19 October 2026)

Iroquois Threshold Days by Year (USC00394254)

6 fixed thresholds counted per year at Iroquois (USC00394254): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Iroquois Thresholds

  • Iroquois: days with 10 mm (0.39 in) or more of precipitation in 63 years, most in 2019 with 31.
  • Iroquois: days with 25 mm (0.98 in) or more of precipitation in 62 years, most in 2019 with 13.
  • Iroquois: days with 10 cm (3.9 in) or more of snowfall in 51 years, most in 2019 with 7.
  • Iroquois: days with 50 mm (1.97 in) or more of precipitation in 29 years, most in 1972 with 4.
  • 6 fixed thresholds have at least one qualifying day at Iroquois.
63 years with a qualifying day
Days with 10 mm (0.39 in) or more of precipitation per year at Iroquois Days per year at Iroquois with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 31 in 2019. 0102030401952: 111953: 221954: 141955: 131956: 181957: 181958: 141959: 151960: 151961: 151962: 221963: 191964: 151965: 201966: 181967: 61968: 211969: 131970: 151971: 181972: 211973: 121974: 121976: 51980: 131982: 231983: 141984: 221986: 221987: 181988: 201989: 141990: 161991: 251992: 141993: 211994: 151995: 251996: 161997: 182000: 172001: 212002: 152003: 152004: 212005: 202006: 152007: 222008: 172009: 232010: 272011: 182012: 152013: 222014: 92015: 192016: 192017: 192018: 182019: 312020: 152021: 192022: 12195219591966197319861993200220092016
Days per year at Iroquois with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 31 in 2019.
Days with 10 mm (0.39 in) or more of precipitation per year at Iroquois
YearDaysDecade average
19521115.6
19532215.6
19541415.6
19551315.6
19561815.6
19571815.6
19581415.6
19591515.6
19601516.4
19611516.4
19622216.4
19631916.4
19641516.4
19652016.4
19661816.4
1967616.4
19682116.4
19691316.4
19701513.8
19711813.8
19722113.8
19731213.8
19741213.8
1976513.8
19801318.3
19822318.3
19831418.3
19842218.3
19862218.3
19871818.3
19882018.3
19891418.3
19901618.8
19912518.8
19921418.8
19932118.8
19941518.8
19952518.8
19961618.8
19971818.8
20001718.6
20012118.6
20021518.6
20031518.6
20042118.6
20052018.6
20061518.6
20072218.6
20081718.6
20092318.6
20102719.7
20111819.7
20121519.7
20132219.7
2014919.7
20151919.7
20161919.7
20171919.7
20181819.7
20193119.7
20201515.3
20211915.3
20221215.3
First to last qualifying date each year at Iroquois For each year, a bar from the first to the last day at Iroquois meeting 10 mm (0.39 in). 1952: 14 January 1952 to 17 November 19521953: 15 January 1953 to 3 December 19531954: 24 March 1954 to 26 November 19541955: 23 April 1955 to 20 September 19551956: 26 January 1956 to 5 November 19561957: 21 February 1957 to 1 November 19571958: 27 February 1958 to 5 September 19581959: 9 May 1959 to 21 October 19591960: 3 February 1960 to 4 December 19601961: 5 May 1961 to 29 October 19611962: 27 April 1962 to 30 September 19621963: 19 March 1963 to 8 December 19631964: 19 March 1964 to 19 September 19641965: 28 March 1965 to 11 December 19651966: 4 March 1966 to 14 October 19661967: 15 February 1967 to 18 September 19671968: 3 April 1968 to 22 December 19681969: 3 May 1969 to 31 October 19691970: 3 March 1970 to 10 December 19701971: 19 February 1971 to 17 November 19711972: 17 March 1972 to 30 December 19721973: 13 February 1973 to 11 October 19731974: 31 March 1974 to 17 August 19741976: 24 June 1976 to 26 September 19761980: 8 April 1980 to 16 October 19801982: 19 March 1982 to 19 October 19821983: 6 March 1983 to 19 October 19831984: 13 February 1984 to 19 October 19841986: 18 March 1986 to 19 September 19861987: 17 March 1987 to 28 December 19871988: 8 March 1988 to 13 November 19881989: 18 March 1989 to 5 November 19891990: 7 March 1990 to 3 October 19901991: 18 February 1991 to 18 November 19911992: 5 March 1992 to 1 November 19921993: 22 March 1993 to 25 November 19931994: 15 April 1994 to 3 October 19941995: 25 March 1995 to 24 October 19951996: 8 May 1996 to 27 October 19961997: 3 January 1997 to 3 December 19972000: 23 February 2000 to 12 November 20002001: 29 January 2001 to 26 November 20012002: 13 January 2002 to 18 September 20022003: 2 February 2003 to 23 November 20032004: 27 March 2004 to 23 October 20042005: 13 February 2005 to 30 November 20052006: 31 March 2006 to 30 December 20062007: 28 February 2007 to 1 December 20072008: 25 April 2008 to 24 October 20082009: 31 March 2009 to 25 December 20092010: 9 March 2010 to 30 December 20102011: 20 February 2011 to 30 August 20112012: 23 February 2012 to 15 December 20122013: 10 February 2013 to 4 December 20132014: 29 April 2014 to 15 December 20142015: 7 May 2015 to 26 December 20152016: 18 April 2016 to 28 November 20162017: 12 March 2017 to 14 October 20172018: 5 March 2018 to 27 December 20182019: 13 March 2019 to 29 December 20192020: 9 February 2020 to 9 November 20202021: 10 March 2021 to 27 October 20212022: 30 April 2022 to 15 December 202219521960196819801990200020082016JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Iroquois meeting 10 mm (0.39 in).
First to last qualifying date each year at Iroquois
YearFirst dateLast date
19521952-01-141952-11-17
19531953-01-151953-12-03
19541954-03-241954-11-26
19551955-04-231955-09-20
19561956-01-261956-11-05
19571957-02-211957-11-01
19581958-02-271958-09-05
19591959-05-091959-10-21
19601960-02-031960-12-04
19611961-05-051961-10-29
19621962-04-271962-09-30
19631963-03-191963-12-08
19641964-03-191964-09-19
19651965-03-281965-12-11
19661966-03-041966-10-14
19671967-02-151967-09-18
19681968-04-031968-12-22
19691969-05-031969-10-31
19701970-03-031970-12-10
19711971-02-191971-11-17
19721972-03-171972-12-30
19731973-02-131973-10-11
19741974-03-311974-08-17
19761976-06-241976-09-26
19801980-04-081980-10-16
19821982-03-191982-10-19
19831983-03-061983-10-19
19841984-02-131984-10-19
19861986-03-181986-09-19
19871987-03-171987-12-28
19881988-03-081988-11-13
19891989-03-181989-11-05
19901990-03-071990-10-03
19911991-02-181991-11-18
19921992-03-051992-11-01
19931993-03-221993-11-25
19941994-04-151994-10-03
19951995-03-251995-10-24
19961996-05-081996-10-27
19971997-01-031997-12-03
20002000-02-232000-11-12
20012001-01-292001-11-26
20022002-01-132002-09-18
20032003-02-022003-11-23
20042004-03-272004-10-23
20052005-02-132005-11-30
20062006-03-312006-12-30
20072007-02-282007-12-01
20082008-04-252008-10-24
20092009-03-312009-12-25
20102010-03-092010-12-30
20112011-02-202011-08-30
20122012-02-232012-12-15
20132013-02-102013-12-04
20142014-04-292014-12-15
20152015-05-072015-12-26
20162016-04-182016-11-28
20172017-03-122017-10-14
20182018-03-052018-12-27
20192019-03-132019-12-29
20202020-02-092020-11-09
20212021-03-102021-10-27
20222022-04-302022-12-15

Every Fixed Threshold

Fixed thresholds at Iroquois
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
10 mm (0.39 in): Days with 10 mm or more rain6331201912
25 mm (0.98 in): Days with 25 mm or more rain621320192
50 mm (1.97 in): Days with 50 mm or more rain29419721
100 mm (3.94 in): Days with 100 mm or more rain1119861
10 cm (3.9 in): Days with 10 cm or more snowfall51720191
25 cm (9.8 in): Days with 25 cm or more snowfall9219941

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1952.

Download the Data

  • Data for Iroquois 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).