Copton Lo Weather Records (CA003071860)

Record envelope, standing records and threshold days for Copton Lo (CA003071860), Alberta, Canada, with 52 years of record.

Key Facts for Copton Lo

Copton Lo (CA003071860) is a weather station in Alberta, Canada at 54.18 latitude and -119.40 longitude, 1,856 m (6,089 ft) above sea level.
The station reports from 1960 to 2011, 52 years of record.
590 records set at Copton 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, 54.18 latitude, -119.40 longitude.
Elevation: 1,856 m (6,089 ft).
Period of record: 1960 to 2011, 52 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 Copton 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 Copton 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	n/a	n/a	n/a	n/a
May	24.0 C (75.2 F)	-16.1 C (3.0 F)	n/a	n/a
Jun	24.4 C (75.9 F)	-5.6 C (21.9 F)	n/a	n/a
Jul	27.2 C (81.0 F)	-4.0 C (24.8 F)	n/a	n/a
Aug	26.7 C (80.1 F)	-6.1 C (21.0 F)	n/a	n/a
Sep	25.0 C (77.0 F)	-10.6 C (12.9 F)	n/a	n/a
Oct	n/a	n/a	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

590 standing records

590 records at Copton Lo still stand. 1981 holds the most, with 87.

Wettest Day of Each Month

Jun: 85.9 mm (3.4 in)

The wettest day on record for each calendar month at Copton Lo. The most was 85.9 mm (3.4 in) on 27 June 1975.

Record daily precipitation for each month at Copton Lo
Month	Record daily precipitation (mm)	Date
May	55.1 mm (2.2 in)	5 May 1977
Jun	85.9 mm (3.4 in)	27 June 1975
Jul	82.1 mm (3.2 in)	14 July 1982
Aug	50.8 mm (2.0 in)	5 August 1968
Sep	49.5 mm (1.9 in)	24 September 1964
Oct	23.6 mm (0.9 in)	6 October 1961
Nov	0.0 mm (0.00 in)	1 November 1960

Period of Record Coverage

1965 to 1983

19 years of record at Copton 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 Copton Lo
Year	Days with data	Share of year	Complete
1965	102	28%	No
1966	109	30%	No
1967	101	28%	No
1968	113	31%	No
1969	111	30%	No
1970	125	34%	No
1971	124	34%	No
1972	85	23%	No
1973	106	29%	No
1974	105	29%	No
1975	106	29%	No
1976	96	26%	No
1977	127	35%	No
1978	119	33%	No
1979	104	28%	No
1980	130	36%	No
1981	147	40%	No
1982	123	34%	No
1983	131	36%	No

Latest Records

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

Extremes by Year

1960 to 1983

Yearly extremes at Copton Lo: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	27.2 C (81.0 F)	1971	24.4 C (75.9 F)	19
Coldest night (TNn)	-16.1 C (3.0 F)	1975	-6.0 C (21.2 F)	19
Wettest day (Rx1day)	85.9 mm (3.4 in)	1975	41.7 mm (1.6 in)	24
Wettest five days (Rx5day)	117.5 mm (4.6 in)	1965	70.2 mm (2.8 in)	24
Longest dry spell (CDD)	35 days	1967	14 days	24

Hottest day (TXx)

The hottest day of the year at Copton Lo, 1960 to 1983. The record is 27.2 C (81.0 F) in 1971, marked on the chart; the median year is 24.4 C (75.9 F).

Hottest day (TXx) at Copton Lo by year
Year	Hottest day (TXx)
1960	n/a
1961	n/a
1962	n/a
1963	n/a
1964	n/a
1965	24.4 C (75.9 F)
1966	22.8 C (73.0 F)
1967	24.4 C (75.9 F)
1968	25.0 C (77.0 F)
1969	24.4 C (75.9 F)
1970	24.4 C (75.9 F)
1971	27.2 C (81.0 F)
1972	23.9 C (75.0 F)
1973	23.3 C (73.9 F)
1974	26.7 C (80.1 F)
1975	26.7 C (80.1 F)
1976	20.0 C (68.0 F)
1977	23.0 C (73.4 F)
1978	24.0 C (75.2 F)
1979	25.0 C (77.0 F)
1980	21.0 C (69.8 F)
1981	26.0 C (78.8 F)
1982	24.0 C (75.2 F)
1983	24.0 C (75.2 F)

Coldest night (TNn)

The coldest night of the year at Copton Lo, 1960 to 1983. The record is -16.1 C (3.0 F) in 1975, marked on the chart; the median year is -6.0 C (21.2 F).

Coldest night (TNn) at Copton Lo by year
Year	Coldest night (TNn)
1960	n/a
1961	n/a
1962	n/a
1963	n/a
1964	n/a
1965	-5.0 C (23.0 F)
1966	-6.1 C (21.0 F)
1967	-3.9 C (25.0 F)
1968	-4.4 C (24.1 F)
1969	-6.7 C (19.9 F)
1970	-10.6 C (12.9 F)
1971	-6.7 C (19.9 F)
1972	-2.2 C (28.0 F)
1973	-6.1 C (21.0 F)
1974	-5.0 C (23.0 F)
1975	-16.1 C (3.0 F)
1976	-5.0 C (23.0 F)
1977	-7.0 C (19.4 F)
1978	-5.0 C (23.0 F)
1979	-7.0 C (19.4 F)
1980	-9.0 C (15.8 F)
1981	-5.0 C (23.0 F)
1982	-4.0 C (24.8 F)
1983	-6.0 C (21.2 F)

Wettest day (Rx1day)

The wettest day of the year at Copton Lo, 1960 to 1983. The record is 85.9 mm (3.4 in) in 1975, marked on the chart; the median year is 41.7 mm (1.6 in).

Wettest day (Rx1day) at Copton Lo by year
Year	Wettest day (Rx1day)
1960	14.7 mm (0.6 in)
1961	29.2 mm (1.1 in)
1962	40.9 mm (1.6 in)
1963	24.9 mm (1.0 in)
1964	49.5 mm (1.9 in)
1965	45.7 mm (1.8 in)
1966	36.8 mm (1.4 in)
1967	23.6 mm (0.9 in)
1968	50.8 mm (2.0 in)
1969	32.0 mm (1.3 in)
1970	44.5 mm (1.8 in)
1971	45.5 mm (1.8 in)
1972	58.2 mm (2.3 in)
1973	42.4 mm (1.7 in)
1974	23.6 mm (0.9 in)
1975	85.9 mm (3.4 in)
1976	34.8 mm (1.4 in)
1977	55.1 mm (2.2 in)
1978	48.0 mm (1.9 in)
1979	25.4 mm (1.0 in)
1980	43.6 mm (1.7 in)
1981	40.5 mm (1.6 in)
1982	82.1 mm (3.2 in)
1983	38.0 mm (1.5 in)

Wettest five days (Rx5day)

The wettest five days of the year at Copton Lo, 1960 to 1983. The record is 117.5 mm (4.6 in) in 1965, marked on the chart; the median year is 70.2 mm (2.8 in).

Wettest five days (Rx5day) at Copton Lo by year
Year	Wettest five days (Rx5day)
1960	14.7 mm (0.6 in)
1961	54.9 mm (2.2 in)
1962	55.4 mm (2.2 in)
1963	55.9 mm (2.2 in)
1964	72.4 mm (2.9 in)
1965	117.5 mm (4.6 in)
1966	59.1 mm (2.3 in)
1967	49.0 mm (1.9 in)
1968	84.1 mm (3.3 in)
1969	47.9 mm (1.9 in)
1970	88.0 mm (3.5 in)
1971	78.9 mm (3.1 in)
1972	100.6 mm (4.0 in)
1973	70.6 mm (2.8 in)
1974	45.3 mm (1.8 in)
1975	97.0 mm (3.8 in)
1976	84.2 mm (3.3 in)
1977	69.7 mm (2.7 in)
1978	85.1 mm (3.4 in)
1979	36.0 mm (1.4 in)
1980	110.3 mm (4.3 in)
1981	49.0 mm (1.9 in)
1982	107.0 mm (4.2 in)
1983	61.2 mm (2.4 in)

Longest dry spell (CDD)

The longest dry spell of the year at Copton Lo, 1960 to 1983. The record is 35 days in 1967, marked on the chart; the median year is 14 days.

Longest dry spell (CDD) at Copton Lo by year
Year	Longest dry spell (CDD)
1960	18 days
1961	21 days
1962	11 days
1963	12 days
1964	14 days
1965	9 days
1966	11 days
1967	35 days
1968	9 days
1969	19 days
1970	14 days
1971	18 days
1972	14 days
1973	14 days
1974	22 days
1975	20 days
1976	10 days
1977	10 days
1978	10 days
1979	11 days
1980	12 days
1981	27 days
1982	11 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 Copton Lo standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Copton 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 2026-10-15 (15 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).