Heart Lake Lo Weather Records (CA003063120)

Record envelope, standing records and threshold days for Heart Lake Lo (CA003063120), Alberta, Canada, with 65 years of record.

Key Facts for Heart Lake Lo

Heart Lake Lo (CA003063120) is a weather station in Alberta, Canada at 55.00 latitude and -111.33 longitude, 887 m (2,910 ft) above sea level.
The station reports from 1947 to 2011, 65 years of record.
836 records set at Heart Lake Lo still stand.
Records are tracked for no element yet: an element needs 30 years of data to be eligible.

About the Station

Location: Alberta, Canada, 55.00 latitude, -111.33 longitude.
Elevation: 887 m (2,910 ft).
Period of record: 1947 to 2011, 65 years.
Eligible elements: none yet.

Daily Record Envelope and 2026

0 days at or beyond a record

The band shows the record high and record low for each calendar day at Heart Lake Lo. The lines show the 2026 daily maximum and minimum. 0 days in 2026 matched or passed a record. Temperatures are in degrees Celsius.

Daily record high and record low at Heart Lake Lo, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	n/a	n/a	n/a	n/a
Feb	n/a	n/a	n/a	n/a
Mar	n/a	n/a	n/a	n/a
Apr	26.0 C (78.8 F)	-17.8 C (0.0 F)	n/a	n/a
May	28.9 C (84.0 F)	-8.9 C (16.0 F)	n/a	n/a
Jun	32.2 C (90.0 F)	-5.0 C (23.0 F)	n/a	n/a
Jul	29.0 C (84.2 F)	2.0 C (35.6 F)	n/a	n/a
Aug	31.0 C (87.8 F)	-4.0 C (24.8 F)	n/a	n/a
Sep	29.0 C (84.2 F)	-11.1 C (12.0 F)	n/a	n/a
Oct	22.2 C (72.0 F)	-12.2 C (10.0 F)	n/a	n/a
Nov	n/a	n/a	n/a	n/a
Dec	n/a	n/a	n/a	n/a

Which Years Hold Standing Records

836 standing records

836 records at Heart Lake Lo still stand. 1981 holds the most, with 75.

Standing records at Heart Lake Lo by the year they were set
Year set	Standing records
1965	63
1966	39
1967	65
1968	41
1969	37
1970	28
1971	20
1972	33
1973	25
1974	46
1975	42
1976	37
1977	67
1978	50
1979	47
1980	43
1981	75
1982	32
1983	46

Wettest Day of Each Month

Jun: 94.0 mm (3.7 in)

The wettest day on record for each calendar month at Heart Lake Lo. The most was 94.0 mm (3.7 in) on 29 June 1955.

Record daily precipitation for each month at Heart Lake Lo
Month	Record daily precipitation (mm)	Date
Apr	35.6 mm (1.4 in)	27 April 1955
May	41.0 mm (1.6 in)	29 May 1978
Jun	94.0 mm (3.7 in)	29 June 1955
Jul	93.0 mm (3.7 in)	23 July 1960
Aug	79.8 mm (3.1 in)	3 August 1980
Sep	89.7 mm (3.5 in)	13 September 1958
Oct	21.8 mm (0.9 in)	12 October 1962
Nov	9.4 mm (0.37 in)	5 November 1962

Period of Record Coverage

1957 to 1983

20 years of record at Heart Lake Lo, 1957 to 1983. 20 years have data for under 90 percent of days and are left out of rankings: 1957, 1965, 1966, 1967, 1968, 1969, 1970, 1971 and others.

Days with data per year at Heart Lake Lo
Year	Days with data	Share of year	Complete
1957	2	1%	No
1965	181	50%	No
1966	168	46%	No
1967	178	49%	No
1968	175	48%	No
1969	176	48%	No
1970	149	41%	No
1971	151	41%	No
1972	153	42%	No
1973	176	48%	No
1974	174	48%	No
1975	173	47%	No
1976	173	47%	No
1977	183	50%	No
1978	188	52%	No
1979	181	50%	No
1980	165	45%	No
1981	180	49%	No
1982	156	43%	No
1983	160	44%	No

Latest Records

No records were set at this station in the latest data.

Extremes by Year

1947 to 1983

Yearly extremes at Heart Lake Lo: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	32.2 C (90.0 F)	1970	27.8 C (82.0 F)	20
Coldest night (TNn)	-17.8 C (0.0 F)	1975	-8.0 C (17.6 F)	20
Wettest day (Rx1day)	94.0 mm (3.7 in)	1955	46.2 mm (1.8 in)	37
Wettest five days (Rx5day)	139.9 mm (5.5 in)	1960	83.8 mm (3.3 in)	37
Longest dry spell (CDD)	30 days	1980	16 days	37

Hottest day (TXx)

The hottest day of the year at Heart Lake Lo, 1947 to 1983. The record is 32.2 C (90.0 F) in 1970, marked on the chart; the median year is 27.8 C (82.0 F).

Hottest day (TXx) at Heart Lake Lo by year
Year	Hottest day (TXx)
1947	n/a
1948	n/a
1949	n/a
1950	n/a
1951	n/a
1952	n/a
1953	n/a
1954	n/a
1955	n/a
1956	n/a
1957	18.3 C (64.9 F)
1958	n/a
1959	n/a
1960	n/a
1961	n/a
1962	n/a
1963	n/a
1964	n/a
1965	27.8 C (82.0 F)
1966	26.1 C (79.0 F)
1967	27.2 C (81.0 F)
1968	27.2 C (81.0 F)
1969	27.8 C (82.0 F)
1970	32.2 C (90.0 F)
1971	28.3 C (82.9 F)
1972	27.8 C (82.0 F)
1973	27.8 C (82.0 F)
1974	26.1 C (79.0 F)
1975	27.8 C (82.0 F)
1976	28.9 C (84.0 F)
1977	27.0 C (80.6 F)
1978	29.0 C (84.2 F)
1979	29.0 C (84.2 F)
1980	26.0 C (78.8 F)
1981	31.0 C (87.8 F)
1982	27.0 C (80.6 F)
1983	29.0 C (84.2 F)

Coldest night (TNn)

The coldest night of the year at Heart Lake Lo, 1947 to 1983. The record is -17.8 C (0.0 F) in 1975, marked on the chart; the median year is -8.0 C (17.6 F).

Coldest night (TNn) at Heart Lake Lo by year
Year	Coldest night (TNn)
1947	n/a
1948	n/a
1949	n/a
1950	n/a
1951	n/a
1952	n/a
1953	n/a
1954	n/a
1955	n/a
1956	n/a
1957	5.6 C (42.1 F)
1958	n/a
1959	n/a
1960	n/a
1961	n/a
1962	n/a
1963	n/a
1964	n/a
1965	-11.1 C (12.0 F)
1966	-8.3 C (17.1 F)
1967	-6.1 C (21.0 F)
1968	-8.9 C (16.0 F)
1969	-6.7 C (19.9 F)
1970	-2.8 C (27.0 F)
1971	-3.3 C (26.1 F)
1972	-7.8 C (18.0 F)
1973	-7.2 C (19.0 F)
1974	-12.2 C (10.0 F)
1975	-17.8 C (0.0 F)
1976	-12.0 C (10.4 F)
1977	-10.0 C (14.0 F)
1978	-11.0 C (12.2 F)
1979	-8.0 C (17.6 F)
1980	-3.0 C (26.6 F)
1981	-17.0 C (1.4 F)
1982	-8.0 C (17.6 F)
1983	-8.0 C (17.6 F)

Wettest day (Rx1day)

The wettest day of the year at Heart Lake Lo, 1947 to 1983. The record is 94.0 mm (3.7 in) in 1955, marked on the chart; the median year is 46.2 mm (1.8 in).

Wettest day (Rx1day) at Heart Lake Lo by year
Year	Wettest day (Rx1day)
1947	82.0 mm (3.2 in)
1948	19.1 mm (0.8 in)
1949	25.9 mm (1.0 in)
1950	30.5 mm (1.2 in)
1951	36.6 mm (1.4 in)
1952	51.6 mm (2.0 in)
1953	41.7 mm (1.6 in)
1954	42.9 mm (1.7 in)
1955	94.0 mm (3.7 in)
1956	51.1 mm (2.0 in)
1957	20.6 mm (0.8 in)
1958	89.7 mm (3.5 in)
1959	70.4 mm (2.8 in)
1960	93.0 mm (3.7 in)
1961	62.5 mm (2.5 in)
1962	57.9 mm (2.3 in)
1963	31.0 mm (1.2 in)
1964	34.0 mm (1.3 in)
1965	52.1 mm (2.1 in)
1966	52.1 mm (2.1 in)
1967	51.8 mm (2.0 in)
1968	50.0 mm (2.0 in)
1969	40.9 mm (1.6 in)
1970	68.8 mm (2.7 in)
1971	40.4 mm (1.6 in)
1972	23.1 mm (0.9 in)
1973	46.2 mm (1.8 in)
1974	38.4 mm (1.5 in)
1975	56.1 mm (2.2 in)
1976	50.5 mm (2.0 in)
1977	52.7 mm (2.1 in)
1978	41.0 mm (1.6 in)
1979	41.4 mm (1.6 in)
1980	79.8 mm (3.1 in)
1981	45.4 mm (1.8 in)
1982	40.2 mm (1.6 in)
1983	41.1 mm (1.6 in)

Wettest five days (Rx5day)

The wettest five days of the year at Heart Lake Lo, 1947 to 1983. The record is 139.9 mm (5.5 in) in 1960, marked on the chart; the median year is 83.8 mm (3.3 in).

Wettest five days (Rx5day) at Heart Lake Lo by year
Year	Wettest five days (Rx5day)
1947	95.7 mm (3.8 in)
1948	32.2 mm (1.3 in)
1949	70.5 mm (2.8 in)
1950	51.6 mm (2.0 in)
1951	96.5 mm (3.8 in)
1952	87.9 mm (3.5 in)
1953	60.0 mm (2.4 in)
1954	79.3 mm (3.1 in)
1955	101.9 mm (4.0 in)
1956	83.6 mm (3.3 in)
1957	43.0 mm (1.7 in)
1958	111.3 mm (4.4 in)
1959	86.2 mm (3.4 in)
1960	139.9 mm (5.5 in)
1961	83.8 mm (3.3 in)
1962	122.7 mm (4.8 in)
1963	37.8 mm (1.5 in)
1964	63.8 mm (2.5 in)
1965	89.9 mm (3.5 in)
1966	64.8 mm (2.6 in)
1967	72.4 mm (2.9 in)
1968	77.4 mm (3.0 in)
1969	96.6 mm (3.8 in)
1970	139.8 mm (5.5 in)
1971	104.4 mm (4.1 in)
1972	54.8 mm (2.2 in)
1973	80.8 mm (3.2 in)
1974	89.5 mm (3.5 in)
1975	90.0 mm (3.5 in)
1976	102.2 mm (4.0 in)
1977	84.5 mm (3.3 in)
1978	77.1 mm (3.0 in)
1979	58.7 mm (2.3 in)
1980	137.6 mm (5.4 in)
1981	72.0 mm (2.8 in)
1982	83.9 mm (3.3 in)
1983	79.8 mm (3.1 in)

Longest dry spell (CDD)

The longest dry spell of the year at Heart Lake Lo, 1947 to 1983. The record is 30 days in 1980, marked on the chart; the median year is 16 days.

Longest dry spell (CDD) at Heart Lake Lo by year
Year	Longest dry spell (CDD)
1947	19 days
1948	25 days
1949	16 days
1950	24 days
1951	13 days
1952	12 days
1953	18 days
1954	13 days
1955	26 days
1956	17 days
1957	15 days
1958	10 days
1959	12 days
1960	13 days
1961	19 days
1962	13 days
1963	19 days
1964	19 days
1965	15 days
1966	12 days
1967	15 days
1968	16 days
1969	13 days
1970	18 days
1971	19 days
1972	18 days
1973	7 days
1974	13 days
1975	17 days
1976	18 days
1977	10 days
1978	13 days
1979	13 days
1980	30 days
1981	24 days
1982	22 days
1983	14 days

Each chart shows one value per year; the dot marks the record year. TXx is the hottest daily maximum, TNn the coldest daily minimum, Rx1day and Rx5day the largest one-day and five-day rain totals, and CDD the longest run of days with less than 1 mm of rain. A year with missing days can understate an extreme.

Download the Data

Data for Heart Lake Lo standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Heart Lake Lo 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). Records are computed by this site and are not official.

Data as of 2025-12-31. Last revised 31 December 2025 (2025-12-31).