Thetford Mines Weather Records (CA007028441)

Record envelope, standing records and threshold days for Thetford Mines (CA007028441), Quebec, Canada, with 65 years of record.

Key Facts for Thetford Mines

Thetford Mines (CA007028441) is a weather station in Quebec, Canada at 46.10 latitude and -71.35 longitude, 381 m (1,250 ft) above sea level.
The station reports from 1960 to 2024, 65 years of record.
1,464 records set at Thetford Mines 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, 46.10 latitude, -71.35 longitude.
Elevation: 381 m (1,250 ft).
Period of record: 1960 to 2024, 65 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 Thetford Mines. 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 Thetford Mines, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	11.1 C (52.0 F)	-36.0 C (-32.8 F)	n/a	n/a
Feb	15.0 C (59.0 F)	-33.3 C (-27.9 F)	n/a	n/a
Mar	17.2 C (63.0 F)	-26.0 C (-14.8 F)	n/a	n/a
Apr	25.6 C (78.1 F)	-19.0 C (-2.2 F)	n/a	n/a
May	31.1 C (88.0 F)	-8.3 C (17.1 F)	n/a	n/a
Jun	31.0 C (87.8 F)	-1.0 C (30.2 F)	n/a	n/a
Jul	33.0 C (91.4 F)	3.0 C (37.4 F)	n/a	n/a
Aug	32.8 C (91.0 F)	1.0 C (33.8 F)	n/a	n/a
Sep	29.0 C (84.2 F)	-6.0 C (21.2 F)	n/a	n/a
Oct	26.1 C (79.0 F)	-10.0 C (14.0 F)	n/a	n/a
Nov	20.0 C (68.0 F)	-22.2 C (-8.0 F)	n/a	n/a
Dec	13.0 C (55.4 F)	-34.0 C (-29.2 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Thetford Mines still stand. 1979 holds the most, with 112.

Standing records at Thetford Mines by the year they were set
Year set	Standing records
1966	15
1967	88
1968	97
1969	75
1970	94
1971	79
1972	69
1973	93
1974	71
1975	74
1976	98
1977	71
1978	68
1979	112
1980	78
1981	88
1982	102
1983	92

Wettest Day of Each Month

Aug: 92.5 mm (3.6 in)

The wettest day on record for each calendar month at Thetford Mines. The most was 92.5 mm (3.6 in) on 28 August 1978.

Record daily precipitation for each month at Thetford Mines
Month	Record daily precipitation (mm)	Date
Jan	41.9 mm (1.6 in)	26 January 1976
Feb	29.0 mm (1.1 in)	22 February 1974
Mar	31.0 mm (1.2 in)	27 March 1978
Apr	39.1 mm (1.5 in)	24 April 1968
May	40.6 mm (1.6 in)	18 May 1976
Jun	69.1 mm (2.7 in)	17 June 1960
Jul	66.0 mm (2.6 in)	11 July 1976
Aug	92.5 mm (3.6 in)	28 August 1978
Sep	80.8 mm (3.2 in)	24 September 1970
Oct	47.2 mm (1.9 in)	4 October 1983
Nov	30.7 mm (1.2 in)	29 November 1960
Dec	52.8 mm (2.1 in)	14 December 1973

Period of Record Coverage

1966 to 1983

18 years of record at Thetford Mines, 1966 to 1983. 1 years have data for under 90 percent of days and are left out of rankings: 1966.

Days with data per year at Thetford Mines
Year	Days with data	Share of year	Complete
1966	45	12%	No
1967	345	95%	Yes
1968	365	100%	Yes
1969	364	100%	Yes
1970	365	100%	Yes
1971	365	100%	Yes
1972	364	99%	Yes
1973	364	100%	Yes
1974	344	94%	Yes
1975	362	99%	Yes
1976	358	98%	Yes
1977	358	98%	Yes
1978	355	97%	Yes
1979	365	100%	Yes
1980	364	99%	Yes
1981	365	100%	Yes
1982	363	99%	Yes
1983	365	100%	Yes

Latest Records

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

Climate Trend

15 complete years, 1968 to 1983

One stripe for each of 15 complete years at Thetford Mines, 1968 to 1983. Blue stripes are years cooler than the station's own mean of 3.6 C (38.5 F); red stripes are warmer. The coolest year was 1976, at 2.6 C (36.6 F), and the warmest was 1973, at 4.7 C (40.5 F). The strongest colour marks a difference of 1.2 C (2.2 F).

Annual mean temperature at Thetford Mines as warming stripes, 1968 to 1983
Year	Annual mean temperature	Difference from the station mean
1968	3.5 C	-0.17 C
1969	3.9 C	+0.28 C
1970	3.5 C	-0.15 C
1971	3.4 C	-0.24 C
1972	2.7 C	-0.90 C
1973	4.7 C	+1.10 C
1975	4.1 C	+0.46 C
1976	2.6 C	-1.07 C
1977	3.4 C	-0.27 C
1978	2.7 C	-0.99 C
1979	4.4 C	+0.75 C
1980	3.0 C	-0.68 C
1981	4.6 C	+0.96 C
1982	3.6 C	-0.05 C
1983	4.6 C	+0.94 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

1960 to 1983

Yearly extremes at Thetford Mines: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	33.0 C (91.4 F)	1983	30.0 C (86.0 F)	18
Coldest night (TNn)	-36.0 C (-32.8 F)	1981	-31.9 C (-25.5 F)	18
Wettest day (Rx1day)	92.5 mm (3.6 in)	1978	54.5 mm (2.1 in)	24
Wettest five days (Rx5day)	126.4 mm (5.0 in)	1973	82.2 mm (3.2 in)	24
Longest dry spell (CDD)	18 days	1967	12 days	24

Hottest day (TXx)

The hottest day of the year at Thetford Mines, 1960 to 1983. The record is 33.0 C (91.4 F) in 1983, marked on the chart; the median year is 30.0 C (86.0 F).

Hottest day (TXx) at Thetford Mines by year
Year	Hottest day (TXx)
1960	n/a
1961	n/a
1962	n/a
1963	n/a
1964	n/a
1965	n/a
1966	12.8 C (55.0 F)
1967	28.9 C (84.0 F)
1968	31.1 C (88.0 F)
1969	30.0 C (86.0 F)
1970	30.6 C (87.1 F)
1971	30.0 C (86.0 F)
1972	29.4 C (84.9 F)
1973	30.0 C (86.0 F)
1974	28.9 C (84.0 F)
1975	32.8 C (91.0 F)
1976	29.4 C (84.9 F)
1977	31.1 C (88.0 F)
1978	30.6 C (87.1 F)
1979	31.1 C (88.0 F)
1980	30.0 C (86.0 F)
1981	29.0 C (84.2 F)
1982	31.0 C (87.8 F)
1983	33.0 C (91.4 F)

Coldest night (TNn)

The coldest night of the year at Thetford Mines, 1960 to 1983. The record is -36.0 C (-32.8 F) in 1981, marked on the chart; the median year is -31.9 C (-25.5 F).

Coldest night (TNn) at Thetford Mines by year
Year	Coldest night (TNn)
1960	n/a
1961	n/a
1962	n/a
1963	n/a
1964	n/a
1965	n/a
1966	-22.8 C (-9.0 F)
1967	-33.3 C (-27.9 F)
1968	-33.9 C (-29.0 F)
1969	-28.3 C (-18.9 F)
1970	-30.6 C (-23.1 F)
1971	-32.8 C (-27.0 F)
1972	-33.3 C (-27.9 F)
1973	-32.2 C (-26.0 F)
1974	-31.7 C (-25.1 F)
1975	-30.6 C (-23.1 F)
1976	-32.2 C (-26.0 F)
1977	-28.3 C (-18.9 F)
1978	-28.3 C (-18.9 F)
1979	-31.7 C (-25.1 F)
1980	-34.0 C (-29.2 F)
1981	-36.0 C (-32.8 F)
1982	-34.0 C (-29.2 F)
1983	-31.5 C (-24.7 F)

Wettest day (Rx1day)

The wettest day of the year at Thetford Mines, 1960 to 1983. The record is 92.5 mm (3.6 in) in 1978, marked on the chart; the median year is 54.5 mm (2.1 in).

Wettest day (Rx1day) at Thetford Mines by year
Year	Wettest day (Rx1day)
1960	69.1 mm (2.7 in)
1961	59.9 mm (2.4 in)
1962	35.3 mm (1.4 in)
1963	61.2 mm (2.4 in)
1964	35.6 mm (1.4 in)
1965	27.9 mm (1.1 in)
1966	17.3 mm (0.7 in)
1967	40.9 mm (1.6 in)
1968	71.1 mm (2.8 in)
1969	31.5 mm (1.2 in)
1970	80.8 mm (3.2 in)
1971	62.5 mm (2.5 in)
1972	67.1 mm (2.6 in)
1973	66.0 mm (2.6 in)
1974	32.5 mm (1.3 in)
1975	43.4 mm (1.7 in)
1976	66.0 mm (2.6 in)
1977	38.1 mm (1.5 in)
1978	92.5 mm (3.6 in)
1979	50.0 mm (2.0 in)
1980	72.0 mm (2.8 in)
1981	53.0 mm (2.1 in)
1982	56.0 mm (2.2 in)
1983	47.2 mm (1.9 in)

Wettest five days (Rx5day)

The wettest five days of the year at Thetford Mines, 1960 to 1983. The record is 126.4 mm (5.0 in) in 1973, marked on the chart; the median year is 82.2 mm (3.2 in).

Wettest five days (Rx5day) at Thetford Mines by year
Year	Wettest five days (Rx5day)
1960	90.5 mm (3.6 in)
1961	80.2 mm (3.2 in)
1962	43.4 mm (1.7 in)
1963	76.5 mm (3.0 in)
1964	52.8 mm (2.1 in)
1965	40.6 mm (1.6 in)
1966	43.2 mm (1.7 in)
1967	58.7 mm (2.3 in)
1968	80.5 mm (3.2 in)
1969	60.4 mm (2.4 in)
1970	111.8 mm (4.4 in)
1971	89.3 mm (3.5 in)
1972	119.7 mm (4.7 in)
1973	126.4 mm (5.0 in)
1974	85.1 mm (3.4 in)
1975	51.1 mm (2.0 in)
1976	90.4 mm (3.6 in)
1977	71.5 mm (2.8 in)
1978	99.3 mm (3.9 in)
1979	93.9 mm (3.7 in)
1980	82.4 mm (3.2 in)
1981	85.5 mm (3.4 in)
1982	82.0 mm (3.2 in)
1983	93.4 mm (3.7 in)

Longest dry spell (CDD)

The longest dry spell of the year at Thetford Mines, 1960 to 1983. The record is 18 days in 1967, marked on the chart; the median year is 12 days.

Longest dry spell (CDD) at Thetford Mines by year
Year	Longest dry spell (CDD)
1960	9 days
1961	11 days
1962	16 days
1963	16 days
1964	14 days
1965	11 days
1966	6 days
1967	18 days
1968	10 days
1969	11 days
1970	13 days
1971	10 days
1972	13 days
1973	16 days
1974	11 days
1975	12 days
1976	16 days
1977	12 days
1978	10 days
1979	18 days
1980	14 days
1981	11 days
1982	12 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 Thetford Mines standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Thetford Mines 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).