Valleyfield Weather Records (CA007028680)

Record envelope, standing records and threshold days for Valleyfield (CA007028680), Quebec, Canada, with 64 years of record.

Key Facts for Valleyfield

Valleyfield (CA007028680) is a weather station in Quebec, Canada at 45.28 latitude and -74.10 longitude, 46 m (151 ft) above sea level.
The station reports from 1952 to 2015, 64 years of record.
1,464 records set at Valleyfield still stand.
Records are tracked for tmax, tmin, prcp, snow: an element needs 30 years of data to be eligible.
Valleyfield set a daily record precipitation of 20.4 mm (0.8 in) on 13 December 1983.

About the Station

Location: Quebec, Canada, 45.28 latitude, -74.10 longitude.
Elevation: 46 m (151 ft).
Period of record: 1952 to 2015, 64 years.
Eligible elements: tmax, tmin, prcp, snow.

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 Valleyfield. 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 Valleyfield, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	11.7 C (53.1 F)	-38.3 C (-36.9 F)	n/a	n/a
Feb	16.0 C (60.8 F)	-32.2 C (-26.0 F)	n/a	n/a
Mar	21.1 C (70.0 F)	-24.0 C (-11.2 F)	n/a	n/a
Apr	30.0 C (86.0 F)	-15.6 C (3.9 F)	n/a	n/a
May	33.3 C (91.9 F)	-4.4 C (24.1 F)	n/a	n/a
Jun	34.4 C (93.9 F)	2.2 C (36.0 F)	n/a	n/a
Jul	35.6 C (96.1 F)	7.0 C (44.6 F)	n/a	n/a
Aug	36.1 C (97.0 F)	1.7 C (35.1 F)	n/a	n/a
Sep	35.0 C (95.0 F)	-1.0 C (30.2 F)	n/a	n/a
Oct	28.9 C (84.0 F)	-8.9 C (16.0 F)	n/a	n/a
Nov	22.2 C (72.0 F)	-21.0 C (-5.8 F)	n/a	n/a
Dec	17.0 C (62.6 F)	-32.0 C (-25.6 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Valleyfield still stand. 1957 holds the most, with 67.

Standing records at Valleyfield by the year they were set
Year set	Standing records
1952	32
1953	62
1954	46
1955	55
1956	55
1957	67
1958	38
1959	67
1960	28
1961	33
1962	31
1963	38
1964	41
1965	44
1966	51
1967	49
1968	46
1969	30
1970	57
1971	27
1972	47
1973	43
1974	40
1975	45
1976	59
1977	40
1978	32
1979	58
1980	48
1981	64
1982	53
1983	38

All-Time Record Progression

1 new records

1 all-time records were set at Valleyfield between 25 August 1982 and 25 August 1982. Each dot is a new record.

Wettest Day of Each Month

Aug: 80.0 mm (3.1 in)

The wettest day on record for each calendar month at Valleyfield. The most was 80.0 mm (3.1 in) on 25 August 1982.

Record daily precipitation for each month at Valleyfield
Month	Record daily precipitation (mm)	Date
Jan	43.4 mm (1.7 in)	15 January 1962
Feb	40.6 mm (1.6 in)	21 February 1954
Mar	44.5 mm (1.8 in)	4 March 1952
Apr	36.8 mm (1.4 in)	13 April 1961
May	44.5 mm (1.8 in)	3 May 1954
Jun	41.1 mm (1.6 in)	24 June 1952
Jul	53.3 mm (2.1 in)	27 July 1975
Aug	80.0 mm (3.1 in)	25 August 1982
Sep	72.9 mm (2.9 in)	25 September 1975
Oct	52.8 mm (2.1 in)	25 October 1960
Nov	40.6 mm (1.6 in)	20 November 1974
Dec	49.0 mm (1.9 in)	5 December 1952

Period of Record Coverage

1952 to 1983

32 years of record at Valleyfield, 1952 to 1983. 2 years have data for under 90 percent of days and are left out of rankings: 1963, 1965.

Days with data per year at Valleyfield
Year	Days with data	Share of year	Complete
1952	335	92%	Yes
1953	365	100%	Yes
1954	365	100%	Yes
1955	365	100%	Yes
1956	366	100%	Yes
1957	362	99%	Yes
1958	365	100%	Yes
1959	364	100%	Yes
1960	363	99%	Yes
1961	351	96%	Yes
1962	334	92%	Yes
1963	320	88%	No
1964	331	90%	Yes
1965	304	83%	No
1966	352	96%	Yes
1967	363	99%	Yes
1968	351	96%	Yes
1969	351	96%	Yes
1970	363	99%	Yes
1971	365	100%	Yes
1972	349	95%	Yes
1973	357	98%	Yes
1974	349	96%	Yes
1975	349	96%	Yes
1976	351	96%	Yes
1977	350	96%	Yes
1978	349	96%	Yes
1979	349	96%	Yes
1980	351	96%	Yes
1981	358	98%	Yes
1982	349	96%	Yes
1983	351	96%	Yes

Latest Records

Latest records at Valleyfield
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
13 December 1983	Valleyfield, CA	daily rain	20.4 mm (0.8 in)	9.0 mm (0.35 in)	5 years	17 of 100 (Routine)
12 December 1983	Valleyfield, CA	daily rain	30.6 mm (1.2 in)	10.3 mm (0.4 in)	10 years	21 of 100 (Routine)
6 December 1983	Valleyfield, CA	daily rain	25.0 mm (1.0 in)	12.6 mm (0.5 in)	8 years	23 of 100 (Routine)
19 November 1983	Valleyfield, CA	daily low max	-2.0 C (28.4 F)	0.3 C (0.5 F)	16 years	8 of 100 (Routine)
18 November 1983	Valleyfield, CA	daily low max	-2.0 C (28.4 F)	0.3 C (0.5 F)	24 years	10 of 100 (Routine)
16 November 1983	Valleyfield, CA	daily rain	19.6 mm (0.8 in)	9.7 mm (0.38 in)	18 years	20 of 100 (Routine)
16 November 1983	Valleyfield, CA	daily snowfall	6.0 cm (2.4 in)	0.9 cm (0.4 in)	16 years	9 of 100 (Routine)
13 November 1983	Valleyfield, CA	daily low min	-7.5 C (18.5 F)	0.8 C (1.4 F)	28 years	12 of 100 (Routine)
13 November 1983	Valleyfield, CA	daily low max (Tie)	-2.2 C (28.0 F)	tie	12 years	1 of 100 (Routine)
5 November 1983	Valleyfield, CA	daily low max	1.0 C (33.8 F)	1.2 C (2.2 F)	29 years	13 of 100 (Routine)
4 November 1983	Valleyfield, CA	daily snowfall	2.0 cm (0.8 in)	2.0 cm (0.8 in)	30 years	15 of 100 (Routine)
13 October 1983	Valleyfield, CA	daily high max	25.0 C (77.0 F)	1.1 C (2.0 F)	28 years	13 of 100 (Routine)
8 October 1983	Valleyfield, CA	daily rain	8.6 mm (0.34 in)	0.5 mm (0.02 in)	17 years	8 of 100 (Routine)
4 October 1983	Valleyfield, CA	daily rain	36.8 mm (1.4 in)	21.8 mm (0.9 in)	28 years	39 of 100 (Notable)
21 September 1983	Valleyfield, CA	daily rain	28.0 mm (1.1 in)	10.0 mm (0.4 in)	24 years	19 of 100 (Routine)
20 September 1983	Valleyfield, CA	daily high max	31.0 C (87.8 F)	2.1 C (3.8 F)	17 years	12 of 100 (Routine)
10 September 1983	Valleyfield, CA	daily high min	20.5 C (68.9 F)	1.1 C (2.0 F)	21 years	11 of 100 (Routine)
6 September 1983	Valleyfield, CA	daily high max	32.0 C (89.6 F)	3.7 C (6.7 F)	24 years	17 of 100 (Routine)
20 August 1983	Valleyfield, CA	daily high min	22.0 C (71.6 F)	1.4 C (2.5 F)	28 years	14 of 100 (Routine)
19 August 1983	Valleyfield, CA	daily high min	19.5 C (67.1 F)	1.2 C (2.2 F)	28 years	14 of 100 (Routine)

Climate Trend

15 complete years, 1954 to 1981

One stripe for each of 15 complete years at Valleyfield, 1954 to 1981. Blue stripes are years cooler than the station's own mean of 6.6 C (43.9 F); red stripes are warmer. The coolest year was 1956, at 5.9 C (42.5 F), and the warmest was 1973, at 7.9 C (46.3 F). The strongest colour marks a difference of 1.4 C (2.5 F).

Annual mean temperature at Valleyfield as warming stripes, 1954 to 1981
Year	Annual mean temperature	Difference from the station mean
1954	6.0 C	-0.56 C
1955	6.8 C	+0.16 C
1956	5.9 C	-0.75 C
1957	6.7 C	+0.07 C
1958	6.1 C	-0.48 C
1959	7.1 C	+0.47 C
1960	7.0 C	+0.41 C
1966	6.6 C	-0.01 C
1967	6.1 C	-0.49 C
1969	6.7 C	+0.07 C
1970	6.4 C	-0.24 C
1971	6.5 C	-0.09 C
1973	7.9 C	+1.34 C
1980	6.1 C	-0.50 C
1981	7.2 C	+0.57 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

1952 to 1983

Yearly extremes at Valleyfield: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	36.1 C (97.0 F)	1975	32.8 C (91.0 F)	32
Coldest night (TNn)	-38.3 C (-36.9 F)	1957	-28.9 C (-20.1 F)	32
Wettest day (Rx1day)	80.0 mm (3.1 in)	1982	41.5 mm (1.6 in)	32
Wettest five days (Rx5day)	108.4 mm (4.3 in)	1960	70.9 mm (2.8 in)	32
Longest dry spell (CDD)	35 days	1961	15 days	32

Hottest day (TXx)

The hottest day of the year at Valleyfield, 1952 to 1983. The record is 36.1 C (97.0 F) in 1975, marked on the chart; the median year is 32.8 C (91.0 F).

Hottest day (TXx) at Valleyfield by year
Year	Hottest day (TXx)
1952	33.3 C (91.9 F)
1953	35.0 C (95.0 F)
1954	30.6 C (87.1 F)
1955	35.6 C (96.1 F)
1956	32.2 C (90.0 F)
1957	33.3 C (91.9 F)
1958	31.1 C (88.0 F)
1959	34.4 C (93.9 F)
1960	32.2 C (90.0 F)
1961	31.7 C (89.1 F)
1962	32.2 C (90.0 F)
1963	32.8 C (91.0 F)
1964	34.4 C (93.9 F)
1965	32.2 C (90.0 F)
1966	33.3 C (91.9 F)
1967	30.6 C (87.1 F)
1968	29.4 C (84.9 F)
1969	32.8 C (91.0 F)
1970	34.4 C (93.9 F)
1971	32.8 C (91.0 F)
1972	31.7 C (89.1 F)
1973	33.3 C (91.9 F)
1974	32.8 C (91.0 F)
1975	36.1 C (97.0 F)
1976	32.2 C (90.0 F)
1977	33.3 C (91.9 F)
1978	33.3 C (91.9 F)
1979	32.8 C (91.0 F)
1980	32.0 C (89.6 F)
1981	34.5 C (94.1 F)
1982	33.0 C (91.4 F)
1983	33.5 C (92.3 F)

Coldest night (TNn)

The coldest night of the year at Valleyfield, 1952 to 1983. The record is -38.3 C (-36.9 F) in 1957, marked on the chart; the median year is -28.9 C (-20.1 F).

Coldest night (TNn) at Valleyfield by year
Year	Coldest night (TNn)
1952	-20.0 C (-4.0 F)
1953	-21.1 C (-6.0 F)
1954	-29.4 C (-20.9 F)
1955	-30.0 C (-22.0 F)
1956	-26.1 C (-15.0 F)
1957	-38.3 C (-36.9 F)
1958	-27.2 C (-17.0 F)
1959	-32.2 C (-26.0 F)
1960	-26.1 C (-15.0 F)
1961	-25.6 C (-14.1 F)
1962	-31.1 C (-24.0 F)
1963	-30.0 C (-22.0 F)
1964	-25.6 C (-14.1 F)
1965	-28.3 C (-18.9 F)
1966	-29.4 C (-20.9 F)
1967	-30.6 C (-23.1 F)
1968	-30.6 C (-23.1 F)
1969	-23.3 C (-9.9 F)
1970	-27.8 C (-18.0 F)
1971	-31.1 C (-24.0 F)
1972	-31.1 C (-24.0 F)
1973	-28.3 C (-18.9 F)
1974	-29.4 C (-20.9 F)
1975	-27.8 C (-18.0 F)
1976	-31.1 C (-24.0 F)
1977	-26.1 C (-15.0 F)
1978	-26.7 C (-16.1 F)
1979	-32.0 C (-25.6 F)
1980	-32.0 C (-25.6 F)
1981	-35.0 C (-31.0 F)
1982	-28.5 C (-19.3 F)
1983	-27.0 C (-16.6 F)

Wettest day (Rx1day)

The wettest day of the year at Valleyfield, 1952 to 1983. The record is 80.0 mm (3.1 in) in 1982, marked on the chart; the median year is 41.5 mm (1.6 in).

Wettest day (Rx1day) at Valleyfield by year
Year	Wettest day (Rx1day)
1952	49.0 mm (1.9 in)
1953	45.7 mm (1.8 in)
1954	45.7 mm (1.8 in)
1955	45.7 mm (1.8 in)
1956	35.6 mm (1.4 in)
1957	33.0 mm (1.3 in)
1958	32.8 mm (1.3 in)
1959	34.8 mm (1.4 in)
1960	52.8 mm (2.1 in)
1961	36.8 mm (1.4 in)
1962	43.4 mm (1.7 in)
1963	57.2 mm (2.3 in)
1964	30.0 mm (1.2 in)
1965	42.4 mm (1.7 in)
1966	45.7 mm (1.8 in)
1967	28.2 mm (1.1 in)
1968	38.1 mm (1.5 in)
1969	35.1 mm (1.4 in)
1970	70.6 mm (2.8 in)
1971	56.6 mm (2.2 in)
1972	36.1 mm (1.4 in)
1973	40.6 mm (1.6 in)
1974	40.6 mm (1.6 in)
1975	72.9 mm (2.9 in)
1976	42.9 mm (1.7 in)
1977	24.9 mm (1.0 in)
1978	31.0 mm (1.2 in)
1979	69.1 mm (2.7 in)
1980	23.6 mm (0.9 in)
1981	43.8 mm (1.7 in)
1982	80.0 mm (3.1 in)
1983	36.8 mm (1.4 in)

Wettest five days (Rx5day)

The wettest five days of the year at Valleyfield, 1952 to 1983. The record is 108.4 mm (4.3 in) in 1960, marked on the chart; the median year is 70.9 mm (2.8 in).

Wettest five days (Rx5day) at Valleyfield by year
Year	Wettest five days (Rx5day)
1952	77.8 mm (3.1 in)
1953	58.5 mm (2.3 in)
1954	98.0 mm (3.9 in)
1955	56.1 mm (2.2 in)
1956	71.2 mm (2.8 in)
1957	42.6 mm (1.7 in)
1958	66.8 mm (2.6 in)
1959	82.5 mm (3.2 in)
1960	108.4 mm (4.3 in)
1961	77.2 mm (3.0 in)
1962	53.6 mm (2.1 in)
1963	91.8 mm (3.6 in)
1964	46.2 mm (1.8 in)
1965	73.2 mm (2.9 in)
1966	63.5 mm (2.5 in)
1967	51.1 mm (2.0 in)
1968	41.4 mm (1.6 in)
1969	54.2 mm (2.1 in)
1970	107.0 mm (4.2 in)
1971	73.1 mm (2.9 in)
1972	66.3 mm (2.6 in)
1973	57.0 mm (2.2 in)
1974	66.3 mm (2.6 in)
1975	106.2 mm (4.2 in)
1976	70.4 mm (2.8 in)
1977	46.5 mm (1.8 in)
1978	75.0 mm (3.0 in)
1979	96.0 mm (3.8 in)
1980	72.2 mm (2.8 in)
1981	70.5 mm (2.8 in)
1982	89.3 mm (3.5 in)
1983	72.3 mm (2.8 in)

Longest dry spell (CDD)

The longest dry spell of the year at Valleyfield, 1952 to 1983. The record is 35 days in 1961, marked on the chart; the median year is 15 days.

Longest dry spell (CDD) at Valleyfield by year
Year	Longest dry spell (CDD)
1952	13 days
1953	25 days
1954	8 days
1955	12 days
1956	15 days
1957	34 days
1958	10 days
1959	14 days
1960	15 days
1961	35 days
1962	24 days
1963	19 days
1964	15 days
1965	16 days
1966	15 days
1967	20 days
1968	18 days
1969	18 days
1970	17 days
1971	24 days
1972	11 days
1973	13 days
1974	9 days
1975	13 days
1976	10 days
1977	25 days
1978	15 days
1979	12 days
1980	30 days
1981	10 days
1982	11 days
1983	10 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 Valleyfield standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Valleyfield 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).