Lac St Denis Weather Records (CA007033700)

Record envelope, standing records and threshold days for Lac St Denis (CA007033700), Quebec, Canada, with 30 years of record.

Key Facts for Lac St Denis

Lac St Denis (CA007033700) is a weather station in Quebec, Canada at 45.93 latitude and -74.32 longitude, 406 m (1,332 ft) above sea level.
The station reports from 1957 to 1986, 30 years of record.
1,464 records set at Lac St Denis still stand.
Records are tracked for no element yet: an element needs 30 years of data to be eligible.

About the Station

Location: Quebec, Canada, 45.93 latitude, -74.32 longitude.
Elevation: 406 m (1,332 ft).
Period of record: 1957 to 1986, 30 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 Lac St Denis. 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 Lac St Denis, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	8.9 C (48.0 F)	-38.0 C (-36.4 F)	n/a	n/a
Feb	10.0 C (50.0 F)	-41.1 C (-42.0 F)	n/a	n/a
Mar	18.3 C (64.9 F)	-34.0 C (-29.2 F)	n/a	n/a
Apr	25.6 C (78.1 F)	-22.2 C (-8.0 F)	n/a	n/a
May	29.4 C (84.9 F)	-7.2 C (19.0 F)	n/a	n/a
Jun	31.7 C (89.1 F)	-3.0 C (26.6 F)	n/a	n/a
Jul	32.2 C (90.0 F)	2.8 C (37.0 F)	n/a	n/a
Aug	34.4 C (93.9 F)	-1.1 C (30.0 F)	n/a	n/a
Sep	28.5 C (83.3 F)	-5.0 C (23.0 F)	n/a	n/a
Oct	25.6 C (78.1 F)	-10.0 C (14.0 F)	n/a	n/a
Nov	17.8 C (64.0 F)	-25.6 C (-14.1 F)	n/a	n/a
Dec	14.5 C (58.1 F)	-35.0 C (-31.0 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Lac St Denis still stand. 1976 holds the most, with 118.

Wettest Day of Each Month

Jun: 84.3 mm (3.3 in)

The wettest day on record for each calendar month at Lac St Denis. The most was 84.3 mm (3.3 in) on 21 June 1972.

Record daily precipitation for each month at Lac St Denis
Month	Record daily precipitation (mm)	Date
Jan	55.9 mm (2.2 in)	22 January 1957
Feb	73.7 mm (2.9 in)	3 February 1972
Mar	60.5 mm (2.4 in)	4 March 1971
Apr	37.8 mm (1.5 in)	15 April 1983
May	40.0 mm (1.6 in)	2 May 1983
Jun	84.3 mm (3.3 in)	21 June 1972
Jul	56.9 mm (2.2 in)	2 July 1967
Aug	69.9 mm (2.8 in)	27 August 1973
Sep	50.0 mm (2.0 in)	14 September 1979
Oct	39.1 mm (1.5 in)	20 October 1976
Nov	42.2 mm (1.7 in)	20 November 1970
Dec	38.9 mm (1.5 in)	27 December 1969

Period of Record Coverage

1968 to 1983

16 years of record at Lac St Denis, 1968 to 1983. 1 years have data for under 90 percent of days and are left out of rankings: 1968.

Days with data per year at Lac St Denis
Year	Days with data	Share of year	Complete
1968	92	25%	No
1969	364	100%	Yes
1970	364	100%	Yes
1971	365	100%	Yes
1972	366	100%	Yes
1973	365	100%	Yes
1974	357	98%	Yes
1975	365	100%	Yes
1976	366	100%	Yes
1977	365	100%	Yes
1978	357	98%	Yes
1979	364	100%	Yes
1980	338	92%	Yes
1981	365	100%	Yes
1982	360	99%	Yes
1983	360	99%	Yes

Latest Records

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

Climate Trend

14 complete years, 1969 to 1983

One stripe for each of 14 complete years at Lac St Denis, 1969 to 1983. Blue stripes are years cooler than the station's own mean of 3.2 C (37.7 F); red stripes are warmer. The coolest year was 1972, at 1.7 C (35.1 F), and the warmest was 1983, at 4.1 C (39.3 F). The strongest colour marks a difference of 1.5 C (2.7 F).

Annual mean temperature at Lac St Denis as warming stripes, 1969 to 1983
Year	Annual mean temperature	Difference from the station mean
1969	3.9 C	+0.69 C
1970	3.2 C	+0.06 C
1971	3.0 C	-0.16 C
1972	1.7 C	-1.45 C
1973	4.1 C	+0.91 C
1974	2.4 C	-0.80 C
1975	3.4 C	+0.28 C
1976	2.4 C	-0.78 C
1977	3.7 C	+0.55 C
1978	2.3 C	-0.84 C
1979	3.1 C	-0.10 C
1981	4.0 C	+0.84 C
1982	3.0 C	-0.16 C
1983	4.1 C	+0.91 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

1957 to 1983

Yearly extremes at Lac St Denis: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	34.4 C (93.9 F)	1975	30.0 C (86.0 F)	16
Coldest night (TNn)	-41.1 C (-42.0 F)	1971	-35.6 C (-32.1 F)	16
Wettest day (Rx1day)	84.3 mm (3.3 in)	1972	46.4 mm (1.8 in)	20
Wettest five days (Rx5day)	143.2 mm (5.6 in)	1972	78.6 mm (3.1 in)	20
Longest dry spell (CDD)	24 days	1978	14 days	20

Hottest day (TXx)

The hottest day of the year at Lac St Denis, 1957 to 1983. The record is 34.4 C (93.9 F) in 1975, marked on the chart; the median year is 30.0 C (86.0 F).

Hottest day (TXx) at Lac St Denis by year
Year	Hottest day (TXx)
1957	n/a
1965	n/a
1966	n/a
1967	n/a
1968	23.9 C (75.0 F)
1969	31.7 C (89.1 F)
1970	30.0 C (86.0 F)
1971	29.4 C (84.9 F)
1972	28.3 C (82.9 F)
1973	29.4 C (84.9 F)
1974	29.4 C (84.9 F)
1975	34.4 C (93.9 F)
1976	30.6 C (87.1 F)
1977	32.2 C (90.0 F)
1978	30.0 C (86.0 F)
1979	30.0 C (86.0 F)
1980	28.5 C (83.3 F)
1981	30.5 C (86.9 F)
1982	29.5 C (85.1 F)
1983	31.5 C (88.7 F)

Coldest night (TNn)

The coldest night of the year at Lac St Denis, 1957 to 1983. The record is -41.1 C (-42.0 F) in 1971, marked on the chart; the median year is -35.6 C (-32.1 F).

Coldest night (TNn) at Lac St Denis by year
Year	Coldest night (TNn)
1957	n/a
1965	n/a
1966	n/a
1967	n/a
1968	-31.7 C (-25.1 F)
1969	-31.7 C (-25.1 F)
1970	-35.0 C (-31.0 F)
1971	-41.1 C (-42.0 F)
1972	-40.0 C (-40.0 F)
1973	-35.6 C (-32.1 F)
1974	-37.2 C (-35.0 F)
1975	-35.6 C (-32.1 F)
1976	-37.8 C (-36.0 F)
1977	-30.0 C (-22.0 F)
1978	-35.6 C (-32.1 F)
1979	-36.1 C (-33.0 F)
1980	-35.0 C (-31.0 F)
1981	-38.0 C (-36.4 F)
1982	-36.0 C (-32.8 F)
1983	-35.0 C (-31.0 F)

Wettest day (Rx1day)

The wettest day of the year at Lac St Denis, 1957 to 1983. The record is 84.3 mm (3.3 in) in 1972, marked on the chart; the median year is 46.4 mm (1.8 in).

Wettest day (Rx1day) at Lac St Denis by year
Year	Wettest day (Rx1day)
1957	66.8 mm (2.6 in)
1965	30.7 mm (1.2 in)
1966	37.1 mm (1.5 in)
1967	56.9 mm (2.2 in)
1968	44.5 mm (1.8 in)
1969	38.9 mm (1.5 in)
1970	51.6 mm (2.0 in)
1971	60.5 mm (2.4 in)
1972	84.3 mm (3.3 in)
1973	69.9 mm (2.8 in)
1974	38.4 mm (1.5 in)
1975	48.3 mm (1.9 in)
1976	39.1 mm (1.5 in)
1977	65.3 mm (2.6 in)
1978	40.2 mm (1.6 in)
1979	50.0 mm (2.0 in)
1980	38.7 mm (1.5 in)
1981	41.0 mm (1.6 in)
1982	60.0 mm (2.4 in)
1983	42.6 mm (1.7 in)

Wettest five days (Rx5day)

The wettest five days of the year at Lac St Denis, 1957 to 1983. The record is 143.2 mm (5.6 in) in 1972, marked on the chart; the median year is 78.6 mm (3.1 in).

Wettest five days (Rx5day) at Lac St Denis by year
Year	Wettest five days (Rx5day)
1957	116.1 mm (4.6 in)
1965	72.9 mm (2.9 in)
1966	62.8 mm (2.5 in)
1967	84.5 mm (3.3 in)
1968	76.2 mm (3.0 in)
1969	64.8 mm (2.6 in)
1970	65.6 mm (2.6 in)
1971	96.7 mm (3.8 in)
1972	143.2 mm (5.6 in)
1973	91.8 mm (3.6 in)
1974	79.0 mm (3.1 in)
1975	74.3 mm (2.9 in)
1976	71.7 mm (2.8 in)
1977	111.8 mm (4.4 in)
1978	66.8 mm (2.6 in)
1979	67.0 mm (2.6 in)
1980	78.2 mm (3.1 in)
1981	97.2 mm (3.8 in)
1982	81.4 mm (3.2 in)
1983	84.6 mm (3.3 in)

Longest dry spell (CDD)

The longest dry spell of the year at Lac St Denis, 1957 to 1983. The record is 24 days in 1978, marked on the chart; the median year is 14 days.

Longest dry spell (CDD) at Lac St Denis by year
Year	Longest dry spell (CDD)
1957	15 days
1965	9 days
1966	10 days
1967	17 days
1968	13 days
1969	13 days
1970	18 days
1971	10 days
1972	15 days
1973	10 days
1974	18 days
1975	17 days
1976	14 days
1977	15 days
1978	24 days
1979	12 days
1980	18 days
1981	9 days
1982	11 days
1983	13 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 Lac St Denis standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Lac St Denis 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 2026-10-14. Last revised 14 October 2026 (2026-10-14).