Dalhousie Mills Weather Records (CA006101958)

Record envelope, standing records and threshold days for Dalhousie Mills (CA006101958), Ontario, Canada, with 37 years of record.

Key Facts for Dalhousie Mills

Dalhousie Mills (CA006101958) is a weather station in Ontario, Canada at 45.32 latitude and -74.47 longitude, 69 m (226 ft) above sea level.
The station reports from 1968 to 2004, 37 years of record.
1,464 records set at Dalhousie Mills still stand.
Records are tracked for no element yet: an element needs 30 years of data to be eligible.

About the Station

Location: Ontario, Canada, 45.32 latitude, -74.47 longitude.
Elevation: 69 m (226 ft).
Period of record: 1968 to 2004, 37 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 Dalhousie Mills. 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 Dalhousie Mills, 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)	-38.9 C (-38.0 F)	n/a	n/a
Feb	14.0 C (57.2 F)	-40.0 C (-40.0 F)	n/a	n/a
Mar	19.5 C (67.1 F)	-33.5 C (-28.3 F)	n/a	n/a
Apr	30.0 C (86.0 F)	-16.1 C (3.0 F)	n/a	n/a
May	32.2 C (90.0 F)	-5.0 C (23.0 F)	n/a	n/a
Jun	32.5 C (90.5 F)	-1.0 C (30.2 F)	n/a	n/a
Jul	33.5 C (92.3 F)	3.5 C (38.3 F)	n/a	n/a
Aug	35.0 C (95.0 F)	-0.6 C (30.9 F)	n/a	n/a
Sep	32.0 C (89.6 F)	-6.0 C (21.2 F)	n/a	n/a
Oct	27.8 C (82.0 F)	-10.0 C (14.0 F)	n/a	n/a
Nov	20.0 C (68.0 F)	-23.0 C (-9.4 F)	n/a	n/a
Dec	17.0 C (62.6 F)	-38.3 C (-36.9 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Dalhousie Mills still stand. 1981 holds the most, with 114.

Wettest Day of Each Month

Sep: 86.0 mm (3.4 in)

The wettest day on record for each calendar month at Dalhousie Mills. The most was 86.0 mm (3.4 in) on 14 September 1979.

Record daily precipitation for each month at Dalhousie Mills
Month	Record daily precipitation (mm)	Date
Jan	43.1 mm (1.7 in)	8 January 1978
Feb	38.4 mm (1.5 in)	3 February 1972
Mar	34.5 mm (1.4 in)	4 March 1974
Apr	32.3 mm (1.3 in)	2 April 1970
May	42.2 mm (1.7 in)	12 May 1981
Jun	39.4 mm (1.6 in)	21 June 1972
Jul	47.0 mm (1.9 in)	1 July 1968
Aug	78.9 mm (3.1 in)	25 August 1982
Sep	86.0 mm (3.4 in)	14 September 1979
Oct	45.2 mm (1.8 in)	9 October 1976
Nov	29.2 mm (1.1 in)	25 November 1972
Dec	36.6 mm (1.4 in)	20 December 1973

Period of Record Coverage

1968 to 1983

16 years of record at Dalhousie Mills, 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 Dalhousie Mills
Year	Days with data	Share of year	Complete
1968	251	69%	No
1969	365	100%	Yes
1970	365	100%	Yes
1971	365	100%	Yes
1972	366	100%	Yes
1973	365	100%	Yes
1974	334	92%	Yes
1975	365	100%	Yes
1976	366	100%	Yes
1977	352	96%	Yes
1978	334	92%	Yes
1979	364	100%	Yes
1980	366	100%	Yes
1981	362	99%	Yes
1982	334	92%	Yes
1983	333	91%	Yes

Latest Records

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

Climate Trend

10 complete years, 1969 to 1981

One stripe for each of 10 complete years at Dalhousie Mills, 1969 to 1981. Blue stripes are years cooler than the station's own mean of 5.0 C (41.1 F); red stripes are warmer. The coolest year was 1972, at 4.0 C (39.1 F), and the warmest was 1981, at 6.1 C (42.9 F). The strongest colour marks a difference of 1.1 C (2.0 F).

Annual mean temperature at Dalhousie Mills as warming stripes, 1969 to 1981
Year	Annual mean temperature	Difference from the station mean
1969	5.2 C	+0.13 C
1970	4.6 C	-0.49 C
1971	4.5 C	-0.50 C
1972	4.0 C	-1.09 C
1973	6.0 C	+0.97 C
1975	5.6 C	+0.54 C
1976	4.2 C	-0.84 C
1979	5.7 C	+0.67 C
1980	4.6 C	-0.41 C
1981	6.1 C	+1.01 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

1968 to 1983

Yearly extremes at Dalhousie Mills: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	35.0 C (95.0 F)	1975	32.4 C (90.2 F)	16
Coldest night (TNn)	-40.0 C (-40.0 F)	1972	-35.7 C (-32.3 F)	16
Wettest day (Rx1day)	86.0 mm (3.4 in)	1979	42.7 mm (1.7 in)	16
Wettest five days (Rx5day)	113.4 mm (4.5 in)	1979	77.7 mm (3.1 in)	16
Longest dry spell (CDD)	18 days	1970	14 days	16

Hottest day (TXx)

The hottest day of the year at Dalhousie Mills, 1968 to 1983. The record is 35.0 C (95.0 F) in 1975, marked on the chart; the median year is 32.4 C (90.2 F).

Hottest day (TXx) at Dalhousie Mills by year
Year	Hottest day (TXx)
1968	32.8 C (91.0 F)
1969	31.7 C (89.1 F)
1970	32.2 C (90.0 F)
1971	32.2 C (90.0 F)
1972	30.6 C (87.1 F)
1973	31.7 C (89.1 F)
1974	31.1 C (88.0 F)
1975	35.0 C (95.0 F)
1976	30.6 C (87.1 F)
1977	32.8 C (91.0 F)
1978	33.0 C (91.4 F)
1979	32.5 C (90.5 F)
1980	32.0 C (89.6 F)
1981	33.0 C (91.4 F)
1982	33.5 C (92.3 F)
1983	32.5 C (90.5 F)

Coldest night (TNn)

The coldest night of the year at Dalhousie Mills, 1968 to 1983. The record is -40.0 C (-40.0 F) in 1972, marked on the chart; the median year is -35.7 C (-32.3 F).

Coldest night (TNn) at Dalhousie Mills by year
Year	Coldest night (TNn)
1968	-31.7 C (-25.1 F)
1969	-30.6 C (-23.1 F)
1970	-38.3 C (-36.9 F)
1971	-38.9 C (-38.0 F)
1972	-40.0 C (-40.0 F)
1973	-34.4 C (-29.9 F)
1974	-37.2 C (-35.0 F)
1975	-36.1 C (-33.0 F)
1976	-38.9 C (-38.0 F)
1977	-32.2 C (-26.0 F)
1978	-34.4 C (-29.9 F)
1979	-35.5 C (-31.9 F)
1980	-36.0 C (-32.8 F)
1981	-36.5 C (-33.7 F)
1982	-35.0 C (-31.0 F)
1983	-30.5 C (-22.9 F)

Wettest day (Rx1day)

The wettest day of the year at Dalhousie Mills, 1968 to 1983. The record is 86.0 mm (3.4 in) in 1979, marked on the chart; the median year is 42.7 mm (1.7 in).

Wettest day (Rx1day) at Dalhousie Mills by year
Year	Wettest day (Rx1day)
1968	47.0 mm (1.9 in)
1969	38.4 mm (1.5 in)
1970	32.3 mm (1.3 in)
1971	31.8 mm (1.3 in)
1972	40.9 mm (1.6 in)
1973	55.1 mm (2.2 in)
1974	34.5 mm (1.4 in)
1975	54.4 mm (2.1 in)
1976	45.2 mm (1.8 in)
1977	83.8 mm (3.3 in)
1978	43.1 mm (1.7 in)
1979	86.0 mm (3.4 in)
1980	38.5 mm (1.5 in)
1981	42.2 mm (1.7 in)
1982	78.9 mm (3.1 in)
1983	31.6 mm (1.2 in)

Wettest five days (Rx5day)

The wettest five days of the year at Dalhousie Mills, 1968 to 1983. The record is 113.4 mm (4.5 in) in 1979, marked on the chart; the median year is 77.7 mm (3.1 in).

Wettest five days (Rx5day) at Dalhousie Mills by year
Year	Wettest five days (Rx5day)
1968	81.8 mm (3.2 in)
1969	71.4 mm (2.8 in)
1970	50.1 mm (2.0 in)
1971	69.1 mm (2.7 in)
1972	93.2 mm (3.7 in)
1973	83.9 mm (3.3 in)
1974	62.7 mm (2.5 in)
1975	90.5 mm (3.6 in)
1976	57.4 mm (2.3 in)
1977	89.8 mm (3.5 in)
1978	60.9 mm (2.4 in)
1979	113.4 mm (4.5 in)
1980	98.6 mm (3.9 in)
1981	72.4 mm (2.9 in)
1982	85.5 mm (3.4 in)
1983	73.6 mm (2.9 in)

Longest dry spell (CDD)

The longest dry spell of the year at Dalhousie Mills, 1968 to 1983. The record is 18 days in 1970, marked on the chart; the median year is 14 days.

Longest dry spell (CDD) at Dalhousie Mills by year
Year	Longest dry spell (CDD)
1968	12 days
1969	12 days
1970	18 days
1971	11 days
1972	13 days
1973	16 days
1974	10 days
1975	15 days
1976	12 days
1977	15 days
1978	16 days
1979	14 days
1980	10 days
1981	10 days
1982	16 days
1983	14 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 Dalhousie Mills standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Dalhousie Mills 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).