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Data as of 2025-12-31
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Built 2026-10-19 (19 October 2026)

Heart Lake Threshold Days by Year (CA006153410)

5 fixed thresholds counted per year at Heart Lake (CA006153410): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Heart Lake Thresholds

  • Heart Lake: days with 10 cm (3.9 in) or more of snowfall in 25 years, most in 1972 with 8.
  • Heart Lake: days with 10 mm (0.39 in) or more of precipitation in 23 years, most in 1977 with 39.
  • Heart Lake: days with 25 mm (0.98 in) or more of precipitation in 22 years, most in 1967 with 10.
  • Heart Lake: days with 50 mm (1.97 in) or more of precipitation in 5 years, most in 1968 with 2.
  • 5 fixed thresholds have at least one qualifying day at Heart Lake.
23 years with a qualifying day
Days with 10 mm (0.39 in) or more of precipitation per year at Heart Lake Days per year at Heart Lake with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 39 in 1977. 0102030401958: 81959: 221960: 251961: 271962: 201963: 211964: 291965: 321966: 241967: 321968: 281969: 281970: 281971: 231972: 291973: 331974: 291975: 271976: 301977: 391978: 291979: 221981: 1819581961196419671970197319761979
Days per year at Heart Lake with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 39 in 1977.
Days with 10 mm (0.39 in) or more of precipitation per year at Heart Lake
YearDaysDecade average
1958815
19592215
19602526.6
19612726.6
19622026.6
19632126.6
19642926.6
19653226.6
19662426.6
19673226.6
19682826.6
19692826.6
19702828.9
19712328.9
19722928.9
19733328.9
19742928.9
19752728.9
19763028.9
19773928.9
19782928.9
19792228.9
19811818
First to last qualifying date each year at Heart Lake For each year, a bar from the first to the last day at Heart Lake meeting 10 mm (0.39 in). 1958: 4 July 1958 to 28 November 19581959: 1 January 1959 to 27 December 19591960: 12 January 1960 to 15 November 19601961: 15 February 1961 to 4 December 19611962: 13 February 1962 to 6 December 19621963: 5 March 1963 to 18 December 19631964: 1 January 1964 to 24 December 19641965: 1 January 1965 to 24 December 19651966: 13 January 1966 to 10 December 19661967: 6 January 1967 to 21 December 19671968: 9 January 1968 to 27 December 19681969: 6 January 1969 to 18 December 19691970: 4 March 1970 to 11 December 19701971: 4 February 1971 to 30 December 19711972: 20 January 1972 to 31 December 19721973: 3 January 1973 to 26 December 19731974: 8 January 1974 to 20 November 19741975: 8 January 1975 to 25 December 19751976: 18 February 1976 to 27 December 19761977: 10 January 1977 to 18 December 19771978: 1 January 1978 to 31 December 19781979: 13 January 1979 to 18 December 19791981: 13 April 1981 to 26 November 198119581961196419671970197319761979JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Heart Lake meeting 10 mm (0.39 in).
First to last qualifying date each year at Heart Lake
YearFirst dateLast date
19581958-07-041958-11-28
19591959-01-011959-12-27
19601960-01-121960-11-15
19611961-02-151961-12-04
19621962-02-131962-12-06
19631963-03-051963-12-18
19641964-01-011964-12-24
19651965-01-011965-12-24
19661966-01-131966-12-10
19671967-01-061967-12-21
19681968-01-091968-12-27
19691969-01-061969-12-18
19701970-03-041970-12-11
19711971-02-041971-12-30
19721972-01-201972-12-31
19731973-01-031973-12-26
19741974-01-081974-11-20
19751975-01-081975-12-25
19761976-02-181976-12-27
19771977-01-101977-12-18
19781978-01-011978-12-31
19791979-01-131979-12-18
19811981-04-131981-11-26

Every Fixed Threshold

Fixed thresholds at Heart Lake
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
10 mm (0.39 in): Days with 10 mm or more rain2339197718
25 mm (0.98 in): Days with 25 mm or more rain221019674
50 mm (1.97 in): Days with 50 mm or more rain5219682
10 cm (3.9 in): Days with 10 cm or more snowfall25819723
25 cm (9.8 in): Days with 25 cm or more snowfall3119601

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1958.

Download the Data

  • Data for Heart Lake 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).