Blyth Weather Records (CA006120819)

Record envelope, standing records and threshold days for Blyth (CA006120819), Ontario, Canada, with 51 years of record.

Key Facts for Blyth

Blyth (CA006120819) is a weather station in Ontario, Canada at 43.72 latitude and -81.38 longitude, 351 m (1,152 ft) above sea level.
The station reports from 1959 to 2009, 51 years of record.
1,464 records set at Blyth 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, 43.72 latitude, -81.38 longitude.
Elevation: 351 m (1,152 ft).
Period of record: 1959 to 2009, 51 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 Blyth. 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 Blyth, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	12.2 C (54.0 F)	-31.1 C (-24.0 F)	n/a	n/a
Feb	10.0 C (50.0 F)	-36.0 C (-32.8 F)	n/a	n/a
Mar	19.4 C (66.9 F)	-28.3 C (-18.9 F)	n/a	n/a
Apr	28.3 C (82.9 F)	-16.1 C (3.0 F)	n/a	n/a
May	31.5 C (88.7 F)	-5.0 C (23.0 F)	n/a	n/a
Jun	33.9 C (93.0 F)	-1.1 C (30.0 F)	n/a	n/a
Jul	35.5 C (95.9 F)	1.7 C (35.1 F)	n/a	n/a
Aug	33.3 C (91.9 F)	0.0 C (32.0 F)	n/a	n/a
Sep	34.0 C (93.2 F)	-2.2 C (28.0 F)	n/a	n/a
Oct	28.9 C (84.0 F)	-10.0 C (14.0 F)	n/a	n/a
Nov	20.6 C (69.1 F)	-15.0 C (5.0 F)	n/a	n/a
Dec	17.5 C (63.5 F)	-28.5 C (-19.3 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Blyth still stand. 1979 holds the most, with 78.

Standing records at Blyth by the year they were set
Year set	Standing records
1959	66
1960	53
1961	48
1962	59
1963	74
1964	66
1965	71
1966	65
1967	77
1968	56
1969	48
1970	42
1971	49
1972	42
1973	67
1974	49
1975	48
1976	58
1977	51
1978	67
1979	78
1980	46
1981	66
1982	69
1983	49

Wettest Day of Each Month

Aug: 112.3 mm (4.4 in)

The wettest day on record for each calendar month at Blyth. The most was 112.3 mm (4.4 in) on 23 August 1975.

Record daily precipitation for each month at Blyth
Month	Record daily precipitation (mm)	Date
Jan	44.0 mm (1.7 in)	10 January 1982
Feb	51.8 mm (2.0 in)	1 February 1968
Mar	28.0 mm (1.1 in)	30 March 1982
Apr	55.1 mm (2.2 in)	18 April 1975
May	45.0 mm (1.8 in)	18 May 1969
Jun	49.0 mm (1.9 in)	20 June 1972
Jul	52.3 mm (2.1 in)	19 July 1970
Aug	112.3 mm (4.4 in)	23 August 1975
Sep	53.5 mm (2.1 in)	22 September 1980
Oct	52.6 mm (2.1 in)	22 October 1972
Nov	46.0 mm (1.8 in)	12 November 1963
Dec	48.8 mm (1.9 in)	6 December 1966

Period of Record Coverage

1959 to 1983

25 years of record at Blyth, 1959 to 1983. 5 years have data for under 90 percent of days and are left out of rankings: 1977, 1979, 1980, 1981, 1983.

Days with data per year at Blyth
Year	Days with data	Share of year	Complete
1959	334	92%	Yes
1960	366	100%	Yes
1961	364	100%	Yes
1962	365	100%	Yes
1963	365	100%	Yes
1964	366	100%	Yes
1965	365	100%	Yes
1966	364	100%	Yes
1967	365	100%	Yes
1968	366	100%	Yes
1969	365	100%	Yes
1970	365	100%	Yes
1971	365	100%	Yes
1972	366	100%	Yes
1973	365	100%	Yes
1974	365	100%	Yes
1975	345	95%	Yes
1976	365	100%	Yes
1977	304	83%	No
1978	364	100%	Yes
1979	325	89%	No
1980	300	82%	No
1981	328	90%	No
1982	364	100%	Yes
1983	324	89%	No

Latest Records

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

Climate Trend

18 complete years, 1960 to 1982

One stripe for each of 18 complete years at Blyth, 1960 to 1982. Blue stripes are years cooler than the station's own mean of 6.3 C (43.4 F); red stripes are warmer. The coolest year was 1978, at 5.3 C (41.6 F), and the warmest was 1973, at 7.6 C (45.8 F). The strongest colour marks a difference of 1.4 C (2.5 F).

Annual mean temperature at Blyth as warming stripes, 1960 to 1982
Year	Annual mean temperature	Difference from the station mean
1960	6.2 C	-0.12 C
1961	6.8 C	+0.50 C
1962	6.5 C	+0.21 C
1963	6.1 C	-0.27 C
1964	7.0 C	+0.69 C
1965	6.1 C	-0.24 C
1966	6.3 C	-0.06 C
1967	5.9 C	-0.45 C
1968	6.4 C	+0.05 C
1969	6.2 C	-0.09 C
1970	6.4 C	+0.04 C
1971	6.7 C	+0.34 C
1972	5.6 C	-0.70 C
1973	7.6 C	+1.31 C
1974	6.5 C	+0.19 C
1976	6.1 C	-0.28 C
1978	5.3 C	-1.02 C
1982	6.3 C	-0.04 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 Blyth: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	35.5 C (95.9 F)	1977	32.2 C (90.0 F)	25
Coldest night (TNn)	-36.0 C (-32.8 F)	1979	-27.2 C (-17.0 F)	25
Wettest day (Rx1day)	112.3 mm (4.4 in)	1975	47.0 mm (1.9 in)	25
Wettest five days (Rx5day)	137.2 mm (5.4 in)	1975	75.8 mm (3.0 in)	25
Longest dry spell (CDD)	32 days	1978	14 days	25

Hottest day (TXx)

The hottest day of the year at Blyth, 1959 to 1983. The record is 35.5 C (95.9 F) in 1977, marked on the chart; the median year is 32.2 C (90.0 F).

Hottest day (TXx) at Blyth by year
Year	Hottest day (TXx)
1959	31.1 C (88.0 F)
1960	32.8 C (91.0 F)
1961	30.6 C (87.1 F)
1962	31.1 C (88.0 F)
1963	33.3 C (91.9 F)
1964	33.3 C (91.9 F)
1965	32.8 C (91.0 F)
1966	32.2 C (90.0 F)
1967	30.0 C (86.0 F)
1968	32.2 C (90.0 F)
1969	31.1 C (88.0 F)
1970	30.6 C (87.1 F)
1971	33.9 C (93.0 F)
1972	31.7 C (89.1 F)
1973	32.8 C (91.0 F)
1974	32.2 C (90.0 F)
1975	33.3 C (91.9 F)
1976	31.1 C (88.0 F)
1977	35.5 C (95.9 F)
1978	34.0 C (93.2 F)
1979	31.0 C (87.8 F)
1980	30.5 C (86.9 F)
1981	32.0 C (89.6 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 Blyth, 1959 to 1983. The record is -36.0 C (-32.8 F) in 1979, marked on the chart; the median year is -27.2 C (-17.0 F).

Coldest night (TNn) at Blyth by year
Year	Coldest night (TNn)
1959	-27.2 C (-17.0 F)
1960	-26.7 C (-16.1 F)
1961	-31.7 C (-25.1 F)
1962	-30.0 C (-22.0 F)
1963	-27.8 C (-18.0 F)
1964	-24.4 C (-11.9 F)
1965	-31.1 C (-24.0 F)
1966	-24.4 C (-11.9 F)
1967	-26.7 C (-16.1 F)
1968	-26.1 C (-15.0 F)
1969	-24.4 C (-11.9 F)
1970	-29.4 C (-20.9 F)
1971	-28.3 C (-18.9 F)
1972	-25.0 C (-13.0 F)
1973	-23.9 C (-11.0 F)
1974	-23.9 C (-11.0 F)
1975	-23.3 C (-9.9 F)
1976	-28.9 C (-20.0 F)
1977	-28.9 C (-20.0 F)
1978	-28.0 C (-18.4 F)
1979	-36.0 C (-32.8 F)
1980	-28.5 C (-19.3 F)
1981	-30.5 C (-22.9 F)
1982	-25.0 C (-13.0 F)
1983	-23.0 C (-9.4 F)

Wettest day (Rx1day)

The wettest day of the year at Blyth, 1959 to 1983. The record is 112.3 mm (4.4 in) in 1975, marked on the chart; the median year is 47.0 mm (1.9 in).

Wettest day (Rx1day) at Blyth by year
Year	Wettest day (Rx1day)
1959	58.4 mm (2.3 in)
1960	45.0 mm (1.8 in)
1961	41.7 mm (1.6 in)
1962	25.4 mm (1.0 in)
1963	46.0 mm (1.8 in)
1964	86.6 mm (3.4 in)
1965	47.2 mm (1.9 in)
1966	48.8 mm (1.9 in)
1967	46.2 mm (1.8 in)
1968	79.2 mm (3.1 in)
1969	45.0 mm (1.8 in)
1970	52.3 mm (2.1 in)
1971	47.0 mm (1.9 in)
1972	52.6 mm (2.1 in)
1973	58.7 mm (2.3 in)
1974	43.9 mm (1.7 in)
1975	112.3 mm (4.4 in)
1976	33.8 mm (1.3 in)
1977	78.0 mm (3.1 in)
1978	34.5 mm (1.4 in)
1979	34.0 mm (1.3 in)
1980	53.5 mm (2.1 in)
1981	39.5 mm (1.6 in)
1982	44.0 mm (1.7 in)
1983	51.0 mm (2.0 in)

Wettest five days (Rx5day)

The wettest five days of the year at Blyth, 1959 to 1983. The record is 137.2 mm (5.4 in) in 1975, marked on the chart; the median year is 75.8 mm (3.0 in).

Wettest five days (Rx5day) at Blyth by year
Year	Wettest five days (Rx5day)
1959	73.8 mm (2.9 in)
1960	68.6 mm (2.7 in)
1961	68.6 mm (2.7 in)
1962	59.0 mm (2.3 in)
1963	59.3 mm (2.3 in)
1964	90.2 mm (3.6 in)
1965	75.8 mm (3.0 in)
1966	83.5 mm (3.3 in)
1967	67.3 mm (2.6 in)
1968	114.8 mm (4.5 in)
1969	74.9 mm (2.9 in)
1970	66.0 mm (2.6 in)
1971	52.1 mm (2.1 in)
1972	109.5 mm (4.3 in)
1973	87.0 mm (3.4 in)
1974	76.2 mm (3.0 in)
1975	137.2 mm (5.4 in)
1976	71.1 mm (2.8 in)
1977	97.0 mm (3.8 in)
1978	90.7 mm (3.6 in)
1979	74.7 mm (2.9 in)
1980	63.0 mm (2.5 in)
1981	83.7 mm (3.3 in)
1982	85.0 mm (3.3 in)
1983	111.0 mm (4.4 in)

Longest dry spell (CDD)

The longest dry spell of the year at Blyth, 1959 to 1983. The record is 32 days in 1978, marked on the chart; the median year is 14 days.

Longest dry spell (CDD) at Blyth by year
Year	Longest dry spell (CDD)
1959	10 days
1960	16 days
1961	12 days
1962	22 days
1963	21 days
1964	12 days
1965	10 days
1966	14 days
1967	19 days
1968	9 days
1969	20 days
1970	12 days
1971	12 days
1972	13 days
1973	18 days
1974	18 days
1975	13 days
1976	14 days
1977	17 days
1978	32 days
1979	16 days
1980	11 days
1981	13 days
1982	16 days
1983	25 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 Blyth standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Blyth 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).