Claresholm Waterworks Weather Records (CA003031658)

Record envelope, standing records and threshold days for Claresholm Waterworks (CA003031658), Alberta, Canada, with 50 years of record.

Key Facts for Claresholm Waterworks

Claresholm Waterworks (CA003031658) is a weather station in Alberta, Canada at 50.02 latitude and -113.72 longitude, 1,008 m (3,307 ft) above sea level.
The station reports from 1959 to 2008, 50 years of record.
1,464 records set at Claresholm Waterworks 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, 50.02 latitude, -113.72 longitude.
Elevation: 1,008 m (3,307 ft).
Period of record: 1959 to 2008, 50 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 Claresholm Waterworks. 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 Claresholm Waterworks, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	17.2 C (63.0 F)	-41.1 C (-42.0 F)	n/a	n/a
Feb	20.0 C (68.0 F)	-37.2 C (-35.0 F)	n/a	n/a
Mar	24.4 C (75.9 F)	-36.1 C (-33.0 F)	n/a	n/a
Apr	27.8 C (82.0 F)	-27.2 C (-17.0 F)	n/a	n/a
May	30.0 C (86.0 F)	-10.0 C (14.0 F)	n/a	n/a
Jun	33.9 C (93.0 F)	-0.6 C (30.9 F)	n/a	n/a
Jul	36.7 C (98.1 F)	0.0 C (32.0 F)	n/a	n/a
Aug	36.7 C (98.1 F)	0.0 C (32.0 F)	n/a	n/a
Sep	34.4 C (93.9 F)	-8.9 C (16.0 F)	n/a	n/a
Oct	30.0 C (86.0 F)	-20.0 C (-4.0 F)	n/a	n/a
Nov	22.2 C (72.0 F)	-33.9 C (-29.0 F)	n/a	n/a
Dec	17.2 C (63.0 F)	-44.0 C (-47.2 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Claresholm Waterworks still stand. 1965 holds the most, with 82.

Standing records at Claresholm Waterworks by the year they were set
Year set	Standing records
1959	51
1960	61
1961	75
1962	65
1963	67
1964	52
1965	82
1966	50
1967	64
1968	75
1969	78
1970	45
1971	63
1972	60
1973	55
1974	47
1975	52
1976	46
1977	50
1978	38
1979	71
1980	60
1981	57
1982	50
1983	50

Wettest Day of Each Month

Jun: 102.9 mm (4.1 in)

The wettest day on record for each calendar month at Claresholm Waterworks. The most was 102.9 mm (4.1 in) on 29 June 1963.

Record daily precipitation for each month at Claresholm Waterworks
Month	Record daily precipitation (mm)	Date
Jan	17.8 mm (0.7 in)	26 January 1970
Feb	16.5 mm (0.6 in)	12 February 1967
Mar	63.5 mm (2.5 in)	25 March 1972
Apr	70.6 mm (2.8 in)	28 April 1967
May	39.2 mm (1.5 in)	23 May 1980
Jun	102.9 mm (4.1 in)	29 June 1963
Jul	36.1 mm (1.4 in)	29 July 1975
Aug	36.6 mm (1.4 in)	11 August 1974
Sep	45.0 mm (1.8 in)	11 September 1978
Oct	20.3 mm (0.8 in)	28 October 1959
Nov	15.8 mm (0.6 in)	8 November 1978
Dec	20.3 mm (0.8 in)	21 December 1974

Period of Record Coverage

1959 to 1983

25 years of record at Claresholm Waterworks, 1959 to 1983. 1 years have data for under 90 percent of days and are left out of rankings: 1959.

Days with data per year at Claresholm Waterworks
Year	Days with data	Share of year	Complete
1959	305	84%	No
1960	366	100%	Yes
1961	365	100%	Yes
1962	363	99%	Yes
1963	365	100%	Yes
1964	334	91%	Yes
1965	365	100%	Yes
1966	365	100%	Yes
1967	334	92%	Yes
1968	366	100%	Yes
1969	337	92%	Yes
1970	365	100%	Yes
1971	364	100%	Yes
1972	366	100%	Yes
1973	334	92%	Yes
1974	364	100%	Yes
1975	365	100%	Yes
1976	366	100%	Yes
1977	364	100%	Yes
1978	365	100%	Yes
1979	365	100%	Yes
1980	360	98%	Yes
1981	362	99%	Yes
1982	363	99%	Yes
1983	363	99%	Yes

Latest Records

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

Climate Trend

20 complete years, 1960 to 1983

One stripe for each of 20 complete years at Claresholm Waterworks, 1960 to 1983. Blue stripes are years cooler than the station's own mean of 4.9 C (40.8 F); red stripes are warmer. The coolest year was 1972, at 3.3 C (37.9 F), and the warmest was 1981, at 6.8 C (44.2 F). The strongest colour marks a difference of 2.0 C (3.6 F).

Annual mean temperature at Claresholm Waterworks as warming stripes, 1960 to 1983
Year	Annual mean temperature	Difference from the station mean
1960	5.4 C	+0.49 C
1961	5.9 C	+1.04 C
1962	5.4 C	+0.55 C
1963	6.1 C	+1.22 C
1965	4.0 C	-0.89 C
1966	4.4 C	-0.45 C
1968	4.7 C	-0.17 C
1970	4.3 C	-0.60 C
1971	4.2 C	-0.63 C
1972	3.3 C	-1.59 C
1974	5.8 C	+0.90 C
1975	3.6 C	-1.26 C
1976	6.4 C	+1.51 C
1977	5.2 C	+0.34 C
1978	3.4 C	-1.45 C
1979	4.6 C	-0.29 C
1980	5.3 C	+0.40 C
1981	6.8 C	+1.91 C
1982	3.4 C	-1.52 C
1983	5.3 C	+0.41 C

This station does not have enough complete years (30 are needed) to fit a temperature trend.

A year is complete when all 12 months have at least 20 days of both daily maximum and daily minimum readings. The annual mean is the mean of the monthly means. The trend describes this one station over this period; it does not say what caused the change.

Extremes by Year

1959 to 1983

Yearly extremes at Claresholm Waterworks: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	36.7 C (98.1 F)	1960	33.9 C (93.0 F)	25
Coldest night (TNn)	-44.0 C (-47.2 F)	1983	-37.0 C (-34.6 F)	25
Wettest day (Rx1day)	102.9 mm (4.1 in)	1963	35.0 mm (1.4 in)	25
Wettest five days (Rx5day)	113.3 mm (4.5 in)	1963	63.5 mm (2.5 in)	25
Longest dry spell (CDD)	65 days	1969	30 days	25

Hottest day (TXx)

The hottest day of the year at Claresholm Waterworks, 1959 to 1983. The record is 36.7 C (98.1 F) in 1960, marked on the chart; the median year is 33.9 C (93.0 F).

Hottest day (TXx) at Claresholm Waterworks by year
Year	Hottest day (TXx)
1959	35.6 C (96.1 F)
1960	36.7 C (98.1 F)
1961	35.0 C (95.0 F)
1962	35.0 C (95.0 F)
1963	31.7 C (89.1 F)
1964	33.9 C (93.0 F)
1965	33.3 C (91.9 F)
1966	31.7 C (89.1 F)
1967	34.4 C (93.9 F)
1968	33.9 C (93.0 F)
1969	31.7 C (89.1 F)
1970	34.4 C (93.9 F)
1971	36.7 C (98.1 F)
1972	32.8 C (91.0 F)
1973	35.0 C (95.0 F)
1974	33.3 C (91.9 F)
1975	34.4 C (93.9 F)
1976	32.2 C (90.0 F)
1977	32.5 C (90.5 F)
1978	31.0 C (87.8 F)
1979	35.0 C (95.0 F)
1980	31.0 C (87.8 F)
1981	34.0 C (93.2 F)
1982	31.0 C (87.8 F)
1983	35.5 C (95.9 F)

Coldest night (TNn)

The coldest night of the year at Claresholm Waterworks, 1959 to 1983. The record is -44.0 C (-47.2 F) in 1983, marked on the chart; the median year is -37.0 C (-34.6 F).

Coldest night (TNn) at Claresholm Waterworks by year
Year	Coldest night (TNn)
1959	-33.9 C (-29.0 F)
1960	-36.1 C (-33.0 F)
1961	-33.9 C (-29.0 F)
1962	-35.6 C (-32.1 F)
1963	-37.2 C (-35.0 F)
1964	-36.1 C (-33.0 F)
1965	-35.0 C (-31.0 F)
1966	-37.8 C (-36.0 F)
1967	-31.7 C (-25.1 F)
1968	-43.3 C (-45.9 F)
1969	-41.1 C (-42.0 F)
1970	-40.6 C (-41.1 F)
1971	-38.9 C (-38.0 F)
1972	-40.6 C (-41.1 F)
1973	-28.9 C (-20.0 F)
1974	-36.1 C (-33.0 F)
1975	-37.2 C (-35.0 F)
1976	-32.2 C (-26.0 F)
1977	-38.5 C (-37.3 F)
1978	-37.5 C (-35.5 F)
1979	-37.0 C (-34.6 F)
1980	-36.5 C (-33.7 F)
1981	-33.0 C (-27.4 F)
1982	-39.0 C (-38.2 F)
1983	-44.0 C (-47.2 F)

Wettest day (Rx1day)

The wettest day of the year at Claresholm Waterworks, 1959 to 1983. The record is 102.9 mm (4.1 in) in 1963, marked on the chart; the median year is 35.0 mm (1.4 in).

Wettest day (Rx1day) at Claresholm Waterworks by year
Year	Wettest day (Rx1day)
1959	48.3 mm (1.9 in)
1960	25.1 mm (1.0 in)
1961	35.8 mm (1.4 in)
1962	25.7 mm (1.0 in)
1963	102.9 mm (4.1 in)
1964	23.6 mm (0.9 in)
1965	24.4 mm (1.0 in)
1966	33.3 mm (1.3 in)
1967	70.6 mm (2.8 in)
1968	31.5 mm (1.2 in)
1969	42.2 mm (1.7 in)
1970	49.3 mm (1.9 in)
1971	23.6 mm (0.9 in)
1972	63.5 mm (2.5 in)
1973	37.3 mm (1.5 in)
1974	61.0 mm (2.4 in)
1975	47.8 mm (1.9 in)
1976	30.0 mm (1.2 in)
1977	25.9 mm (1.0 in)
1978	45.0 mm (1.8 in)
1979	25.4 mm (1.0 in)
1980	39.2 mm (1.5 in)
1981	30.2 mm (1.2 in)
1982	29.0 mm (1.1 in)
1983	35.0 mm (1.4 in)

Wettest five days (Rx5day)

The wettest five days of the year at Claresholm Waterworks, 1959 to 1983. The record is 113.3 mm (4.5 in) in 1963, marked on the chart; the median year is 63.5 mm (2.5 in).

Wettest five days (Rx5day) at Claresholm Waterworks by year
Year	Wettest five days (Rx5day)
1959	95.8 mm (3.8 in)
1960	57.4 mm (2.3 in)
1961	38.8 mm (1.5 in)
1962	40.7 mm (1.6 in)
1963	113.3 mm (4.5 in)
1964	71.6 mm (2.8 in)
1965	61.8 mm (2.4 in)
1966	49.6 mm (2.0 in)
1967	107.5 mm (4.2 in)
1968	63.5 mm (2.5 in)
1969	80.1 mm (3.2 in)
1970	66.8 mm (2.6 in)
1971	60.9 mm (2.4 in)
1972	85.6 mm (3.4 in)
1973	44.9 mm (1.8 in)
1974	73.5 mm (2.9 in)
1975	66.2 mm (2.6 in)
1976	89.5 mm (3.5 in)
1977	27.4 mm (1.1 in)
1978	65.0 mm (2.6 in)
1979	42.0 mm (1.7 in)
1980	81.2 mm (3.2 in)
1981	53.2 mm (2.1 in)
1982	61.6 mm (2.4 in)
1983	40.9 mm (1.6 in)

Longest dry spell (CDD)

The longest dry spell of the year at Claresholm Waterworks, 1959 to 1983. The record is 65 days in 1969, marked on the chart; the median year is 30 days.

Longest dry spell (CDD) at Claresholm Waterworks by year
Year	Longest dry spell (CDD)
1959	30 days
1960	38 days
1961	27 days
1962	28 days
1963	27 days
1964	59 days
1965	45 days
1966	25 days
1967	31 days
1968	25 days
1969	65 days
1970	31 days
1971	30 days
1972	34 days
1973	26 days
1974	39 days
1975	22 days
1976	32 days
1977	35 days
1978	22 days
1979	22 days
1980	31 days
1981	27 days
1982	23 days
1983	26 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.

Frost Dates and Growing Season

20 years with a frost

Across 20 years with a frost, the median last spring frost at Claresholm Waterworks falls on 20 May and the median first autumn frost on 10 September, which leaves a median of 112 days between them.

Frost dates and growing season at Claresholm Waterworks
Measure	Median, all years	Earliest period	Recent period (1960 to 1983)	Recent against earliest	Fitted trend
Last spring frost	20 May	n/a	20 May	n/a	n/a
First autumn frost	10 September	n/a	10 September	n/a	n/a
Growing days	112 days	n/a	112 days	n/a	n/a

A frost day is a day with a daily minimum at or below 0 C (32 F). The last spring frost and the first autumn frost are the last and first such days of the cold season, and growing days are the days between them. A negative trend for the last spring frost means it comes earlier.

Download the Data

Data for Claresholm Waterworks standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Claresholm Waterworks 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 2026-10-17. Last revised 17 October 2026 (2026-10-17).