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Built 2026-10-19 (19 October 2026)

Churchill A Threshold Days by Year (CA005060600)

13 fixed thresholds counted per year at Churchill A (CA005060600): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Churchill A Thresholds

  • Churchill A: days with a maximum temperature at or below 0 C (32 F) in 40 years, most in 1959 with 227.
  • Churchill A: nights with a minimum temperature at or below 0 C (32 F) in 40 years, most in 1972 with 280.
  • Churchill A: nights with a minimum temperature at or below -10 C (14 F) in 40 years, most in 1972 with 198.
  • Churchill A: nights with a minimum temperature at or below -20 C (-4 F) in 40 years, most in 1964 with 141.
  • 13 fixed thresholds have at least one qualifying day at Churchill A.
23 years with a qualifying day
Days at or above 30 C (86 F) per year at Churchill A Days per year at Churchill A with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 7 in 1976. 024681943: 21944: 11946: 21948: 11953: 41954: 21955: 41956: 11957: 11961: 21962: 11964: 11967: 31970: 31971: 11972: 11973: 41974: 11975: 21976: 71979: 31981: 21983: 119431948195519611967197219751981
Days per year at Churchill A with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 7 in 1976.
Days at or above 30 C (86 F) per year at Churchill A
YearDaysDecade average
194321.5
194411.5
194621.5
194811.5
195342.4
195422.4
195542.4
195612.4
195712.4
196121.8
196211.8
196411.8
196731.8
197032.8
197112.8
197212.8
197342.8
197412.8
197522.8
197672.8
197932.8
198121.5
198311.5
First to last qualifying date each year at Churchill A For each year, a bar from the first to the last day at Churchill A meeting 30 C (86 F). 1943: 2 July 1943 to 24 July 19431944: 1 July 1944 to 1 July 19441946: 31 July 1946 to 24 August 19461948: 7 July 1948 to 7 July 19481953: 9 July 1953 to 21 August 19531954: 21 July 1954 to 22 July 19541955: 13 June 1955 to 8 August 19551956: 22 July 1956 to 22 July 19561957: 23 July 1957 to 23 July 19571961: 7 July 1961 to 9 July 19611962: 2 July 1962 to 2 July 19621964: 11 July 1964 to 11 July 19641967: 26 June 1967 to 12 August 19671970: 20 July 1970 to 9 August 19701971: 4 August 1971 to 4 August 19711972: 25 August 1972 to 25 August 19721973: 21 July 1973 to 18 August 19731974: 24 June 1974 to 24 June 19741975: 3 July 1975 to 4 July 19751976: 19 June 1976 to 17 August 19761979: 6 July 1979 to 8 July 19791981: 3 July 1981 to 28 August 19811983: 11 August 1983 to 11 August 198319431948195519611967197219751981JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Churchill A meeting 30 C (86 F).
First to last qualifying date each year at Churchill A
YearFirst dateLast date
19431943-07-021943-07-24
19441944-07-011944-07-01
19461946-07-311946-08-24
19481948-07-071948-07-07
19531953-07-091953-08-21
19541954-07-211954-07-22
19551955-06-131955-08-08
19561956-07-221956-07-22
19571957-07-231957-07-23
19611961-07-071961-07-09
19621962-07-021962-07-02
19641964-07-111964-07-11
19671967-06-261967-08-12
19701970-07-201970-08-09
19711971-08-041971-08-04
19721972-08-251972-08-25
19731973-07-211973-08-18
19741974-06-241974-06-24
19751975-07-031975-07-04
19761976-06-191976-08-17
19791979-07-061979-07-08
19811981-07-031981-08-28
19831983-08-111983-08-11

Every Fixed Threshold

Fixed thresholds at Churchill A
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days23719761
90 F (32.2 C): Days8219751
0 C (32 F): Ice days (max402271959195
0 C (32 F): Frost days (min402801972250
-10 C (14 F): Days with min401981972173
-20 C (-4 F): Days with min401411964127
-30 C (-22 F): Days with min4092197258
-40 C (-40 F): Days with min301819501
10 mm (0.39 in): Days with 10 mm or more rain4017198216
25 mm (0.98 in): Days with 25 mm or more rain25319602
50 mm (1.97 in): Days with 50 mm or more rain4119471
10 cm (3.9 in): Days with 10 cm or more snowfall36919826
25 cm (9.8 in): Days with 25 cm or more snowfall4219611

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1943.

Download the Data

  • Data for Churchill A 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).