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Data as of 2026-10-17
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Built 2026-10-19 (19 October 2026)

Thompson A Threshold Days by Year (CA005062922)

13 fixed thresholds counted per year at Thompson A (CA005062922): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Thompson A Thresholds

  • Thompson A: days with a maximum temperature at or below 0 C (32 F) in 16 years, most in 1978 with 163.
  • Thompson A: nights with a minimum temperature at or below 0 C (32 F) in 16 years, most in 1974 with 264.
  • Thompson A: nights with a minimum temperature at or below -10 C (14 F) in 16 years, most in 1972 with 168.
  • Thompson A: nights with a minimum temperature at or below -20 C (-4 F) in 16 years, most in 1972 with 128.
  • 13 fixed thresholds have at least one qualifying day at Thompson A.
12 years with a qualifying day
Days at or above 30 C (86 F) per year at Thompson A Days per year at Thompson A with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 8 in 1972. 024681969: 21970: 31971: 11972: 81973: 61974: 61975: 51976: 41977: 21979: 51981: 51983: 6196919711973197519771981
Days per year at Thompson A with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 8 in 1972.
Days at or above 30 C (86 F) per year at Thompson A
YearDaysDecade average
196922
197034.4
197114.4
197284.4
197364.4
197464.4
197554.4
197644.4
197724.4
197954.4
198155.5
198365.5
First to last qualifying date each year at Thompson A For each year, a bar from the first to the last day at Thompson A meeting 30 C (86 F). 1969: 9 August 1969 to 10 August 19691970: 5 June 1970 to 8 August 19701971: 6 August 1971 to 6 August 19711972: 22 May 1972 to 26 August 19721973: 23 June 1973 to 18 August 19731974: 24 June 1974 to 8 August 19741975: 25 June 1975 to 29 July 19751976: 19 June 1976 to 17 August 19761977: 13 May 1977 to 26 May 19771979: 28 June 1979 to 8 July 19791981: 1 July 1981 to 18 July 19811983: 11 June 1983 to 12 August 1983196919711973197519771981JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Thompson A meeting 30 C (86 F).
First to last qualifying date each year at Thompson A
YearFirst dateLast date
19691969-08-091969-08-10
19701970-06-051970-08-08
19711971-08-061971-08-06
19721972-05-221972-08-26
19731973-06-231973-08-18
19741974-06-241974-08-08
19751975-06-251975-07-29
19761976-06-191976-08-17
19771977-05-131977-05-26
19791979-06-281979-07-08
19811981-07-011981-07-18
19831983-06-111983-08-12

Every Fixed Threshold

Fixed thresholds at Thompson A
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days12819726
90 F (32.2 C): Days8219701
0 C (32 F): Ice days (max161631978154
0 C (32 F): Frost days (min162641974239
-10 C (14 F): Days with min161681972149
-20 C (-4 F): Days with min161281972102
-30 C (-22 F): Days with min1673197250
-40 C (-40 F): Days with min161819749
10 mm (0.39 in): Days with 10 mm or more rain1618197116
25 mm (0.98 in): Days with 25 mm or more rain16519804
50 mm (1.97 in): Days with 50 mm or more rain4119681
10 cm (3.9 in): Days with 10 cm or more snowfall141219825
25 cm (9.8 in): Days with 25 cm or more snowfall3119701

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1969.

Download the Data

  • Data for Thompson 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).