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Built 2026-10-19 (19 October 2026)

Mackenzie Threshold Days by Year (USC00245303)

4 fixed thresholds counted per year at Mackenzie (USC00245303): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Mackenzie Thresholds

  • Mackenzie: days with 10 mm (0.39 in) or more of precipitation in 74 years, most in 2013 with 19.
  • Mackenzie: days with 25 mm (0.98 in) or more of precipitation in 63 years, most in 1973 with 6.
  • Mackenzie: days with 50 mm (1.97 in) or more of precipitation in 12 years, most in 1971 with 2.
  • Mackenzie: days with 10 cm (3.9 in) or more of snowfall in 4 years, most in 1953 with 2.
  • 4 fixed thresholds have at least one qualifying day at Mackenzie.
74 years with a qualifying day
Days with 10 mm (0.39 in) or more of precipitation per year at Mackenzie Days per year at Mackenzie with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 19 in 2013. 051015201951: 91952: 31953: 121954: 71955: 51956: 81957: 101958: 81959: 71960: 41961: 81962: 131963: 121964: 81965: 101966: 81967: 121968: 101969: 111970: 91971: 111972: 151973: 131974: 111975: 141976: 81977: 131978: 141979: 81980: 81981: 71982: 161983: 101984: 71985: 121986: 131987: 81988: 11989: 111990: 51991: 111992: 51993: 141994: 131995: 81996: 71997: 141998: 101999: 122000: 82001: 112002: 102003: 92004: 82005: 182006: 82007: 92008: 82009: 132010: 162012: 52013: 192014: 122015: 102016: 142017: 42018: 122019: 142020: 92021: 42022: 192023: 192024: 92025: 101951195919671975198319911999200720162024
Days per year at Mackenzie with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 19 in 2013.
Days with 10 mm (0.39 in) or more of precipitation per year at Mackenzie
YearDaysDecade average
195197.7
195237.7
1953127.7
195477.7
195557.7
195687.7
1957107.7
195887.7
195977.7
196049.6
196189.6
1962139.6
1963129.6
196489.6
1965109.6
196689.6
1967129.6
1968109.6
1969119.6
1970911.6
19711111.6
19721511.6
19731311.6
19741111.6
19751411.6
1976811.6
19771311.6
19781411.6
1979811.6
198089.3
198179.3
1982169.3
1983109.3
198479.3
1985129.3
1986139.3
198789.3
198819.3
1989119.3
199059.9
1991119.9
199259.9
1993149.9
1994139.9
199589.9
199679.9
1997149.9
1998109.9
1999129.9
2000810.2
20011110.2
20021010.2
2003910.2
2004810.2
20051810.2
2006810.2
2007910.2
2008810.2
20091310.2
20101611.8
2012511.8
20131911.8
20141211.8
20151011.8
20161411.8
2017411.8
20181211.8
20191411.8
2020911.7
2021411.7
20221911.7
20231911.7
2024911.7
20251011.7
First to last qualifying date each year at Mackenzie For each year, a bar from the first to the last day at Mackenzie meeting 10 mm (0.39 in). 1951: 31 May 1951 to 13 October 19511952: 8 May 1952 to 19 July 19521953: 29 April 1953 to 22 October 19531954: 2 June 1954 to 8 September 19541955: 4 April 1955 to 26 July 19551956: 10 May 1956 to 30 August 19561957: 20 May 1957 to 31 October 19571958: 4 June 1958 to 21 October 19581959: 13 February 1959 to 23 November 19591960: 29 March 1960 to 12 July 19601961: 23 April 1961 to 21 September 19611962: 26 April 1962 to 6 October 19621963: 2 April 1963 to 3 September 19631964: 12 April 1964 to 14 November 19641965: 10 April 1965 to 11 November 19651966: 3 March 1966 to 2 September 19661967: 2 March 1967 to 15 September 19671968: 30 May 1968 to 12 December 19681969: 25 April 1969 to 23 July 19691970: 28 April 1970 to 10 November 19701971: 20 April 1971 to 7 December 19711972: 1 May 1972 to 5 October 19721973: 23 March 1973 to 10 October 19731974: 20 April 1974 to 31 October 19741975: 23 March 1975 to 31 December 19751976: 1 January 1976 to 4 August 19761977: 4 January 1977 to 20 November 19771978: 7 May 1978 to 9 November 19781979: 22 January 1979 to 10 September 19791980: 5 June 1980 to 16 October 19801981: 12 May 1981 to 5 August 19811982: 17 March 1982 to 24 December 19821983: 9 January 1983 to 2 October 19831984: 27 April 1984 to 1 December 19841985: 28 March 1985 to 19 September 19851986: 20 January 1986 to 25 September 19861987: 21 March 1987 to 5 September 19871988: 18 September 1988 to 18 September 19881989: 3 April 1989 to 28 October 19891990: 11 June 1990 to 17 October 19901991: 26 April 1991 to 15 September 19911992: 18 April 1992 to 23 August 19921993: 19 April 1993 to 22 August 19931994: 25 April 1994 to 18 October 19941995: 16 January 1995 to 5 October 19951996: 3 January 1996 to 19 October 19961997: 3 January 1997 to 8 November 19971998: 8 June 1998 to 29 October 19981999: 10 April 1999 to 27 September 19992000: 25 February 2000 to 2 November 20002001: 14 March 2001 to 6 September 20012002: 13 January 2002 to 18 September 20022003: 17 March 2003 to 29 October 20032004: 29 February 2004 to 29 October 20042005: 19 April 2005 to 27 November 20052006: 2 April 2006 to 3 October 20062007: 28 March 2007 to 8 September 20072008: 1 May 2008 to 12 October 20082009: 16 April 2009 to 26 December 20092010: 1 April 2010 to 23 September 20102012: 27 April 2012 to 13 August 20122013: 18 May 2013 to 24 December 20132014: 28 April 2014 to 9 November 20142015: 8 April 2015 to 3 October 20152016: 18 April 2016 to 25 December 20162017: 19 April 2017 to 15 September 20172018: 24 April 2018 to 1 December 20182019: 21 April 2019 to 12 September 20192020: 7 May 2020 to 15 October 20202021: 26 June 2021 to 11 October 20212022: 3 April 2022 to 10 November 20222023: 11 May 2023 to 10 October 20232024: 24 March 2024 to 12 September 20242025: 19 May 2025 to 10 November 202519511961197119811991200120122022JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Mackenzie meeting 10 mm (0.39 in).
First to last qualifying date each year at Mackenzie
YearFirst dateLast date
19511951-05-311951-10-13
19521952-05-081952-07-19
19531953-04-291953-10-22
19541954-06-021954-09-08
19551955-04-041955-07-26
19561956-05-101956-08-30
19571957-05-201957-10-31
19581958-06-041958-10-21
19591959-02-131959-11-23
19601960-03-291960-07-12
19611961-04-231961-09-21
19621962-04-261962-10-06
19631963-04-021963-09-03
19641964-04-121964-11-14
19651965-04-101965-11-11
19661966-03-031966-09-02
19671967-03-021967-09-15
19681968-05-301968-12-12
19691969-04-251969-07-23
19701970-04-281970-11-10
19711971-04-201971-12-07
19721972-05-011972-10-05
19731973-03-231973-10-10
19741974-04-201974-10-31
19751975-03-231975-12-31
19761976-01-011976-08-04
19771977-01-041977-11-20
19781978-05-071978-11-09
19791979-01-221979-09-10
19801980-06-051980-10-16
19811981-05-121981-08-05
19821982-03-171982-12-24
19831983-01-091983-10-02
19841984-04-271984-12-01
19851985-03-281985-09-19
19861986-01-201986-09-25
19871987-03-211987-09-05
19881988-09-181988-09-18
19891989-04-031989-10-28
19901990-06-111990-10-17
19911991-04-261991-09-15
19921992-04-181992-08-23
19931993-04-191993-08-22
19941994-04-251994-10-18
19951995-01-161995-10-05
19961996-01-031996-10-19
19971997-01-031997-11-08
19981998-06-081998-10-29
19991999-04-101999-09-27
20002000-02-252000-11-02
20012001-03-142001-09-06
20022002-01-132002-09-18
20032003-03-172003-10-29
20042004-02-292004-10-29
20052005-04-192005-11-27
20062006-04-022006-10-03
20072007-03-282007-09-08
20082008-05-012008-10-12
20092009-04-162009-12-26
20102010-04-012010-09-23
20122012-04-272012-08-13
20132013-05-182013-12-24
20142014-04-282014-11-09
20152015-04-082015-10-03
20162016-04-182016-12-25
20172017-04-192017-09-15
20182018-04-242018-12-01
20192019-04-212019-09-12
20202020-05-072020-10-15
20212021-06-262021-10-11
20222022-04-032022-11-10
20232023-05-112023-10-10
20242024-03-242024-09-12
20252025-05-192025-11-10

Every Fixed Threshold

Fixed thresholds at Mackenzie
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
10 mm (0.39 in): Days with 10 mm or more rain7419201310
25 mm (0.98 in): Days with 25 mm or more rain63619733
50 mm (1.97 in): Days with 50 mm or more rain12219712
10 cm (3.9 in): Days with 10 cm or more snowfall4219532

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1951.

Download the Data

  • Data for Mackenzie 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).