Aylmer Weather Records (CA006130409)

Record envelope, standing records and threshold days for Aylmer (CA006130409), Ontario, Canada, with 34 years of record.

Key Facts for Aylmer

Aylmer (CA006130409) is a weather station in Ontario, Canada at 42.77 latitude and -80.98 longitude, 229 m (751 ft) above sea level.
The station reports from 1948 to 1981, 34 years of record.
1,464 records set at Aylmer 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, 42.77 latitude, -80.98 longitude.
Elevation: 229 m (751 ft).
Period of record: 1948 to 1981, 34 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 Aylmer. 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 Aylmer, 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)	-30.0 C (-22.0 F)	n/a	n/a
Feb	13.3 C (55.9 F)	-26.0 C (-14.8 F)	n/a	n/a
Mar	21.1 C (70.0 F)	-21.0 C (-5.8 F)	n/a	n/a
Apr	29.4 C (84.9 F)	-12.8 C (9.0 F)	n/a	n/a
May	31.1 C (88.0 F)	-5.0 C (23.0 F)	n/a	n/a
Jun	35.6 C (96.1 F)	-1.1 C (30.0 F)	n/a	n/a
Jul	36.1 C (97.0 F)	5.0 C (41.0 F)	n/a	n/a
Aug	36.7 C (98.1 F)	2.8 C (37.0 F)	n/a	n/a
Sep	36.1 C (97.0 F)	-2.2 C (28.0 F)	n/a	n/a
Oct	28.3 C (82.9 F)	-10.0 C (14.0 F)	n/a	n/a
Nov	21.1 C (70.0 F)	-15.6 C (3.9 F)	n/a	n/a
Dec	16.7 C (62.1 F)	-23.3 C (-9.9 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Aylmer still stand. 1976 holds the most, with 103.

Standing records at Aylmer by the year they were set
Year set	Standing records
1952	97
1953	89
1954	95
1955	98
1956	51
1957	36
1958	64
1959	46
1968	58
1969	59
1970	13
1971	52
1972	70
1973	75
1974	70
1975	95
1976	103
1977	103
1978	59
1979	69
1980	29
1981	33

Wettest Day of Each Month

Jun: 100.8 mm (4.0 in)

The wettest day on record for each calendar month at Aylmer. The most was 100.8 mm (4.0 in) on 25 June 1968.

Record daily precipitation for each month at Aylmer
Month	Record daily precipitation (mm)	Date
Jan	37.5 mm (1.5 in)	10 January 1980
Feb	39.1 mm (1.5 in)	28 February 1954
Mar	54.1 mm (2.1 in)	1 March 1972
Apr	60.2 mm (2.4 in)	13 April 1979
May	52.3 mm (2.1 in)	18 May 1969
Jun	100.8 mm (4.0 in)	25 June 1968
Jul	81.3 mm (3.2 in)	29 July 1953
Aug	70.0 mm (2.8 in)	23 August 1979
Sep	48.3 mm (1.9 in)	15 September 1957
Oct	80.0 mm (3.1 in)	5 October 1955
Nov	52.1 mm (2.1 in)	1 November 1969
Dec	36.6 mm (1.4 in)	7 December 1950

Period of Record Coverage

1952 to 1981

22 years of record at Aylmer, 1952 to 1981. 11 years have data for under 90 percent of days and are left out of rankings: 1956, 1957, 1958, 1959, 1968, 1969, 1970, 1971 and others.

Days with data per year at Aylmer
Year	Days with data	Share of year	Complete
1952	332	91%	Yes
1953	359	98%	Yes
1954	349	96%	Yes
1955	365	100%	Yes
1956	182	50%	No
1957	153	42%	No
1958	301	82%	No
1959	178	49%	No
1968	255	70%	No
1969	310	85%	No
1970	72	20%	No
1971	219	60%	No
1972	363	99%	Yes
1973	356	98%	Yes
1974	331	91%	Yes
1975	362	99%	Yes
1976	362	99%	Yes
1977	347	95%	Yes
1978	334	92%	Yes
1979	303	83%	No
1980	240	66%	No
1981	291	80%	No

Latest Records

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

Extremes by Year

1948 to 1981

Yearly extremes at Aylmer: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	36.7 C (98.1 F)	1955	32.8 C (91.0 F)	22
Coldest night (TNn)	-30.0 C (-22.0 F)	1976	-22.2 C (-8.0 F)	22
Wettest day (Rx1day)	100.8 mm (4.0 in)	1968	45.3 mm (1.8 in)	26
Wettest five days (Rx5day)	166.9 mm (6.6 in)	1954	72.6 mm (2.9 in)	26
Longest dry spell (CDD)	29 days	1969	17 days	26

Hottest day (TXx)

The hottest day of the year at Aylmer, 1948 to 1981. The record is 36.7 C (98.1 F) in 1955, marked on the chart; the median year is 32.8 C (91.0 F).

Hottest day (TXx) at Aylmer by year
Year	Hottest day (TXx)
1948	n/a
1949	n/a
1950	n/a
1951	n/a
1952	33.9 C (93.0 F)
1953	36.1 C (97.0 F)
1954	34.4 C (93.9 F)
1955	36.7 C (98.1 F)
1956	33.3 C (91.9 F)
1957	31.1 C (88.0 F)
1958	30.6 C (87.1 F)
1959	31.7 C (89.1 F)
1968	32.8 C (91.0 F)
1969	31.1 C (88.0 F)
1970	25.6 C (78.1 F)
1971	35.6 C (96.1 F)
1972	32.2 C (90.0 F)
1973	33.3 C (91.9 F)
1974	32.8 C (91.0 F)
1975	34.4 C (93.9 F)
1976	31.1 C (88.0 F)
1977	33.9 C (93.0 F)
1978	33.0 C (91.4 F)
1979	31.5 C (88.7 F)
1980	31.5 C (88.7 F)
1981	32.5 C (90.5 F)

Coldest night (TNn)

The coldest night of the year at Aylmer, 1948 to 1981. The record is -30.0 C (-22.0 F) in 1976, marked on the chart; the median year is -22.2 C (-8.0 F).

Coldest night (TNn) at Aylmer by year
Year	Coldest night (TNn)
1948	n/a
1949	n/a
1950	n/a
1951	n/a
1952	-16.7 C (1.9 F)
1953	-17.8 C (0.0 F)
1954	-17.2 C (1.0 F)
1955	-23.9 C (-11.0 F)
1956	-20.6 C (-5.1 F)
1957	-14.4 C (6.1 F)
1958	-22.2 C (-8.0 F)
1959	-17.2 C (1.0 F)
1968	-16.7 C (1.9 F)
1969	-20.0 C (-4.0 F)
1970	-22.8 C (-9.0 F)
1971	-13.3 C (8.1 F)
1972	-22.8 C (-9.0 F)
1973	-22.2 C (-8.0 F)
1974	-20.6 C (-5.1 F)
1975	-23.3 C (-9.9 F)
1976	-30.0 C (-22.0 F)
1977	-24.4 C (-11.9 F)
1978	-26.0 C (-14.8 F)
1979	-25.0 C (-13.0 F)
1980	-22.5 C (-8.5 F)
1981	-25.5 C (-13.9 F)

Wettest day (Rx1day)

The wettest day of the year at Aylmer, 1948 to 1981. The record is 100.8 mm (4.0 in) in 1968, marked on the chart; the median year is 45.3 mm (1.8 in).

Wettest day (Rx1day) at Aylmer by year
Year	Wettest day (Rx1day)
1948	37.1 mm (1.5 in)
1949	46.0 mm (1.8 in)
1950	36.6 mm (1.4 in)
1951	42.2 mm (1.7 in)
1952	61.0 mm (2.4 in)
1953	81.3 mm (3.2 in)
1954	75.4 mm (3.0 in)
1955	80.0 mm (3.1 in)
1956	52.3 mm (2.1 in)
1957	48.3 mm (1.9 in)
1958	39.4 mm (1.6 in)
1959	30.7 mm (1.2 in)
1968	100.8 mm (4.0 in)
1969	52.3 mm (2.1 in)
1970	19.1 mm (0.8 in)
1971	40.4 mm (1.6 in)
1972	54.1 mm (2.1 in)
1973	43.7 mm (1.7 in)
1974	34.5 mm (1.4 in)
1975	44.5 mm (1.8 in)
1976	36.8 mm (1.4 in)
1977	56.4 mm (2.2 in)
1978	29.0 mm (1.1 in)
1979	70.0 mm (2.8 in)
1980	50.0 mm (2.0 in)
1981	43.5 mm (1.7 in)

Wettest five days (Rx5day)

The wettest five days of the year at Aylmer, 1948 to 1981. The record is 166.9 mm (6.6 in) in 1954, marked on the chart; the median year is 72.6 mm (2.9 in).

Wettest five days (Rx5day) at Aylmer by year
Year	Wettest five days (Rx5day)
1948	81.1 mm (3.2 in)
1949	65.1 mm (2.6 in)
1950	68.6 mm (2.7 in)
1951	54.9 mm (2.2 in)
1952	80.8 mm (3.2 in)
1953	97.8 mm (3.9 in)
1954	166.9 mm (6.6 in)
1955	110.5 mm (4.4 in)
1956	95.4 mm (3.8 in)
1957	60.0 mm (2.4 in)
1958	88.2 mm (3.5 in)
1959	47.4 mm (1.9 in)
1968	116.0 mm (4.6 in)
1969	71.2 mm (2.8 in)
1970	25.0 mm (1.0 in)
1971	46.8 mm (1.8 in)
1972	81.3 mm (3.2 in)
1973	91.9 mm (3.6 in)
1974	69.8 mm (2.7 in)
1975	74.0 mm (2.9 in)
1976	66.6 mm (2.6 in)
1977	105.2 mm (4.1 in)
1978	47.0 mm (1.9 in)
1979	97.0 mm (3.8 in)
1980	64.5 mm (2.5 in)
1981	61.0 mm (2.4 in)

Longest dry spell (CDD)

The longest dry spell of the year at Aylmer, 1948 to 1981. The record is 29 days in 1969, marked on the chart; the median year is 17 days.

Longest dry spell (CDD) at Aylmer by year
Year	Longest dry spell (CDD)
1948	21 days
1949	20 days
1950	17 days
1951	14 days
1952	13 days
1953	23 days
1954	13 days
1955	17 days
1956	15 days
1957	24 days
1958	24 days
1959	20 days
1968	17 days
1969	29 days
1970	12 days
1971	17 days
1972	14 days
1973	17 days
1974	14 days
1975	18 days
1976	25 days
1977	15 days
1978	18 days
1979	17 days
1980	12 days
1981	22 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 Aylmer standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Aylmer 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).