Blackstone Lo Weather Records (CA003010712)

Record envelope, standing records and threshold days for Blackstone Lo (CA003010712), Alberta, Canada, with 47 years of record.

Key Facts for Blackstone Lo

Blackstone Lo (CA003010712) is a weather station in Alberta, Canada at 52.78 latitude and -116.35 longitude, 1,570 m (5,151 ft) above sea level.
The station reports from 1965 to 2011, 47 years of record.
796 records set at Blackstone 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, 52.78 latitude, -116.35 longitude.
Elevation: 1,570 m (5,151 ft).
Period of record: 1965 to 2011, 47 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 Blackstone 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 Blackstone 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)	-15.6 C (3.9 F)	n/a	n/a
May	27.0 C (80.6 F)	-7.0 C (19.4 F)	n/a	n/a
Jun	30.0 C (86.0 F)	-5.0 C (23.0 F)	n/a	n/a
Jul	30.6 C (87.1 F)	-1.1 C (30.0 F)	n/a	n/a
Aug	31.0 C (87.8 F)	-6.0 C (21.2 F)	n/a	n/a
Sep	28.9 C (84.0 F)	-9.4 C (15.1 F)	n/a	n/a
Oct	23.0 C (73.4 F)	-8.0 C (17.6 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

796 standing records

796 records at Blackstone Lo still stand. 1967 holds the most, with 91.

Standing records at Blackstone Lo by the year they were set
Year set	Standing records
1965	35
1966	73
1967	91
1968	37
1969	28
1970	39
1971	31
1972	33
1973	29
1974	22
1975	28
1976	46
1977	65
1978	28
1979	65
1980	28
1981	39
1982	44
1983	35

Wettest Day of Each Month

May: 64.0 mm (2.5 in)

The wettest day on record for each calendar month at Blackstone Lo. The most was 64.0 mm (2.5 in) on 6 May 1981.

Record daily precipitation for each month at Blackstone Lo
Month	Record daily precipitation (mm)	Date
Apr	32.4 mm (1.3 in)	24 April 1983
May	64.0 mm (2.5 in)	6 May 1981
Jun	63.8 mm (2.5 in)	24 June 1972
Jul	57.2 mm (2.3 in)	3 July 1966
Aug	56.4 mm (2.2 in)	5 August 1969
Sep	24.4 mm (1.0 in)	25 September 1982
Oct	20.4 mm (0.8 in)	2 October 1982

Period of Record Coverage

1965 to 1983

19 years of record at Blackstone Lo, 1965 to 1983. 19 years have data for under 90 percent of days and are left out of rankings: 1965, 1966, 1967, 1968, 1969, 1970, 1971, 1972 and others.

Days with data per year at Blackstone Lo
Year	Days with data	Share of year	Complete
1965	116	32%	No
1966	185	51%	No
1967	165	45%	No
1968	150	41%	No
1969	143	39%	No
1970	142	39%	No
1971	146	40%	No
1972	144	39%	No
1973	117	32%	No
1974	149	41%	No
1975	145	40%	No
1976	150	41%	No
1977	167	46%	No
1978	153	42%	No
1979	178	49%	No
1980	146	40%	No
1981	131	36%	No
1982	159	44%	No
1983	165	45%	No

Latest Records

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

Extremes by Year

1965 to 1983

Yearly extremes at Blackstone Lo: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	31.0 C (87.8 F)	1983	28.9 C (84.0 F)	19
Coldest night (TNn)	-15.6 C (3.9 F)	1966	-7.2 C (19.0 F)	19
Wettest day (Rx1day)	64.0 mm (2.5 in)	1981	36.8 mm (1.4 in)	19
Wettest five days (Rx5day)	143.4 mm (5.6 in)	1980	74.6 mm (2.9 in)	19
Longest dry spell (CDD)	19 days	1981	14 days	19

Hottest day (TXx)

The hottest day of the year at Blackstone Lo, 1965 to 1983. The record is 31.0 C (87.8 F) in 1983, marked on the chart; the median year is 28.9 C (84.0 F).

Hottest day (TXx) at Blackstone Lo by year
Year	Hottest day (TXx)
1965	26.7 C (80.1 F)
1966	28.9 C (84.0 F)
1967	28.9 C (84.0 F)
1968	26.7 C (80.1 F)
1969	27.8 C (82.0 F)
1970	30.0 C (86.0 F)
1971	30.6 C (87.1 F)
1972	26.7 C (80.1 F)
1973	28.9 C (84.0 F)
1974	30.6 C (87.1 F)
1975	30.6 C (87.1 F)
1976	28.0 C (82.4 F)
1977	28.0 C (82.4 F)
1978	28.0 C (82.4 F)
1979	30.0 C (86.0 F)
1980	29.0 C (84.2 F)
1981	29.0 C (84.2 F)
1982	27.0 C (80.6 F)
1983	31.0 C (87.8 F)

Coldest night (TNn)

The coldest night of the year at Blackstone Lo, 1965 to 1983. The record is -15.6 C (3.9 F) in 1966, marked on the chart; the median year is -7.2 C (19.0 F).

Coldest night (TNn) at Blackstone Lo by year
Year	Coldest night (TNn)
1965	-8.9 C (16.0 F)
1966	-15.6 C (3.9 F)
1967	-7.2 C (19.0 F)
1968	-4.4 C (24.1 F)
1969	-5.6 C (21.9 F)
1970	-9.4 C (15.1 F)
1971	-7.2 C (19.0 F)
1972	-9.4 C (15.1 F)
1973	-3.9 C (25.0 F)
1974	-8.9 C (16.0 F)
1975	-5.6 C (21.9 F)
1976	-7.0 C (19.4 F)
1977	-8.0 C (17.6 F)
1978	-2.0 C (28.4 F)
1979	-8.0 C (17.6 F)
1980	-6.0 C (21.2 F)
1981	-5.0 C (23.0 F)
1982	-7.0 C (19.4 F)
1983	-9.0 C (15.8 F)

Wettest day (Rx1day)

The wettest day of the year at Blackstone Lo, 1965 to 1983. The record is 64.0 mm (2.5 in) in 1981, marked on the chart; the median year is 36.8 mm (1.4 in).

Wettest day (Rx1day) at Blackstone Lo by year
Year	Wettest day (Rx1day)
1965	43.7 mm (1.7 in)
1966	57.2 mm (2.3 in)
1967	36.8 mm (1.4 in)
1968	37.6 mm (1.5 in)
1969	56.4 mm (2.2 in)
1970	29.2 mm (1.1 in)
1971	36.6 mm (1.4 in)
1972	63.8 mm (2.5 in)
1973	30.0 mm (1.2 in)
1974	47.0 mm (1.9 in)
1975	33.5 mm (1.3 in)
1976	19.6 mm (0.8 in)
1977	56.3 mm (2.2 in)
1978	28.1 mm (1.1 in)
1979	17.6 mm (0.7 in)
1980	49.0 mm (1.9 in)
1981	64.0 mm (2.5 in)
1982	24.4 mm (1.0 in)
1983	32.4 mm (1.3 in)

Wettest five days (Rx5day)

The wettest five days of the year at Blackstone Lo, 1965 to 1983. The record is 143.4 mm (5.6 in) in 1980, marked on the chart; the median year is 74.6 mm (2.9 in).

Wettest five days (Rx5day) at Blackstone Lo by year
Year	Wettest five days (Rx5day)
1965	82.6 mm (3.3 in)
1966	124.8 mm (4.9 in)
1967	74.6 mm (2.9 in)
1968	84.9 mm (3.3 in)
1969	105.7 mm (4.2 in)
1970	68.1 mm (2.7 in)
1971	97.7 mm (3.8 in)
1972	118.0 mm (4.6 in)
1973	41.4 mm (1.6 in)
1974	71.3 mm (2.8 in)
1975	49.7 mm (2.0 in)
1976	34.8 mm (1.4 in)
1977	87.8 mm (3.5 in)
1978	59.1 mm (2.3 in)
1979	39.8 mm (1.6 in)
1980	143.4 mm (5.6 in)
1981	97.0 mm (3.8 in)
1982	60.0 mm (2.4 in)
1983	60.4 mm (2.4 in)

Longest dry spell (CDD)

The longest dry spell of the year at Blackstone Lo, 1965 to 1983. The record is 19 days in 1981, marked on the chart; the median year is 14 days.

Longest dry spell (CDD) at Blackstone Lo by year
Year	Longest dry spell (CDD)
1965	8 days
1966	16 days
1967	16 days
1968	14 days
1969	12 days
1970	14 days
1971	15 days
1972	15 days
1973	11 days
1974	13 days
1975	14 days
1976	11 days
1977	12 days
1978	9 days
1979	13 days
1980	15 days
1981	19 days
1982	9 days
1983	15 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 Blackstone Lo standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Blackstone 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 2026-10-14 (14 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).