Petrolia Town Weather Records (CA006126499)

Record envelope, standing records and threshold days for Petrolia Town (CA006126499), Ontario, Canada, with 46 years of record.

Key Facts for Petrolia Town

Petrolia Town (CA006126499) is a weather station in Ontario, Canada at 42.88 latitude and -82.17 longitude, 201 m (659 ft) above sea level.
The station reports from 1960 to 2005, 46 years of record.
1,464 records set at Petrolia Town 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, 42.88 latitude, -82.17 longitude.
Elevation: 201 m (659 ft).
Period of record: 1960 to 2005, 46 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 Petrolia Town. 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 Petrolia Town, 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)	-28.9 C (-20.0 F)	n/a	n/a
Feb	14.4 C (57.9 F)	-27.0 C (-16.6 F)	n/a	n/a
Mar	23.3 C (73.9 F)	-25.0 C (-13.0 F)	n/a	n/a
Apr	28.9 C (84.0 F)	-13.0 C (8.6 F)	n/a	n/a
May	32.0 C (89.6 F)	-2.5 C (27.5 F)	n/a	n/a
Jun	34.5 C (94.1 F)	-1.7 C (28.9 F)	n/a	n/a
Jul	36.5 C (97.7 F)	5.6 C (42.1 F)	n/a	n/a
Aug	35.0 C (95.0 F)	2.0 C (35.6 F)	n/a	n/a
Sep	35.0 C (95.0 F)	-1.1 C (30.0 F)	n/a	n/a
Oct	29.4 C (84.9 F)	-7.2 C (19.0 F)	n/a	n/a
Nov	23.3 C (73.9 F)	-17.2 C (1.0 F)	n/a	n/a
Dec	18.5 C (65.3 F)	-22.0 C (-7.6 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Petrolia Town still stand. 1976 holds the most, with 147.

Wettest Day of Each Month

Sep: 73.6 mm (2.9 in)

The wettest day on record for each calendar month at Petrolia Town. The most was 73.6 mm (2.9 in) on 30 September 1981.

Record daily precipitation for each month at Petrolia Town
Month	Record daily precipitation (mm)	Date
Jan	31.8 mm (1.3 in)	22 January 1965
Feb	40.6 mm (1.6 in)	24 February 1965
Mar	37.1 mm (1.5 in)	5 March 1965
Apr	59.4 mm (2.3 in)	13 April 1979
May	47.0 mm (1.9 in)	8 May 1964
Jun	71.1 mm (2.8 in)	25 June 1968
Jul	58.2 mm (2.3 in)	28 July 1976
Aug	56.4 mm (2.2 in)	11 August 1964
Sep	73.6 mm (2.9 in)	30 September 1981
Oct	54.4 mm (2.1 in)	22 October 1972
Nov	49.5 mm (1.9 in)	18 November 1969
Dec	51.6 mm (2.0 in)	24 December 1965

Period of Record Coverage

1971 to 1983

13 years of record at Petrolia Town, 1971 to 1983. 1 years have data for under 90 percent of days and are left out of rankings: 1971.

Days with data per year at Petrolia Town
Year	Days with data	Share of year	Complete
1971	143	39%	No
1972	366	100%	Yes
1973	365	100%	Yes
1974	365	100%	Yes
1975	365	100%	Yes
1976	366	100%	Yes
1977	365	100%	Yes
1978	344	94%	Yes
1979	365	100%	Yes
1980	363	99%	Yes
1981	365	100%	Yes
1982	362	99%	Yes
1983	363	99%	Yes

Latest Records

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

Climate Trend

11 complete years, 1972 to 1983

One stripe for each of 11 complete years at Petrolia Town, 1972 to 1983. Blue stripes are years cooler than the station's own mean of 8.1 C (46.6 F); red stripes are warmer. The coolest year was 1972, at 7.3 C (45.1 F), and the warmest was 1973, at 9.3 C (48.8 F). The strongest colour marks a difference of 1.3 C (2.3 F).

Annual mean temperature at Petrolia Town as warming stripes, 1972 to 1983
Year	Annual mean temperature	Difference from the station mean
1972	7.3 C	-0.85 C
1973	9.3 C	+1.20 C
1974	8.0 C	-0.16 C
1975	8.7 C	+0.58 C
1976	7.5 C	-0.59 C
1977	8.2 C	+0.13 C
1979	7.6 C	-0.51 C
1980	7.5 C	-0.61 C
1981	8.2 C	+0.11 C
1982	8.2 C	+0.04 C
1983	8.8 C	+0.64 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 Petrolia Town: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	36.5 C (97.7 F)	1977	34.0 C (93.2 F)	13
Coldest night (TNn)	-28.9 C (-20.0 F)	1976	-24.0 C (-11.2 F)	13
Wettest day (Rx1day)	73.6 mm (2.9 in)	1981	48.2 mm (1.9 in)	24
Wettest five days (Rx5day)	120.9 mm (4.8 in)	1967	66.4 mm (2.6 in)	24
Longest dry spell (CDD)	29 days	1963	15 days	24

Hottest day (TXx)

The hottest day of the year at Petrolia Town, 1960 to 1983. The record is 36.5 C (97.7 F) in 1977, marked on the chart; the median year is 34.0 C (93.2 F).

Hottest day (TXx) at Petrolia Town 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	n/a
1967	n/a
1968	n/a
1969	n/a
1970	n/a
1971	32.2 C (90.0 F)
1972	33.3 C (91.9 F)
1973	35.0 C (95.0 F)
1974	35.6 C (96.1 F)
1975	35.0 C (95.0 F)
1976	33.9 C (93.0 F)
1977	36.5 C (97.7 F)
1978	34.0 C (93.2 F)
1979	32.0 C (89.6 F)
1980	32.5 C (90.5 F)
1981	34.0 C (93.2 F)
1982	32.0 C (89.6 F)
1983	35.0 C (95.0 F)

Coldest night (TNn)

The coldest night of the year at Petrolia Town, 1960 to 1983. The record is -28.9 C (-20.0 F) in 1976, marked on the chart; the median year is -24.0 C (-11.2 F).

Coldest night (TNn) at Petrolia Town 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	n/a
1967	n/a
1968	n/a
1969	n/a
1970	n/a
1971	-17.2 C (1.0 F)
1972	-24.4 C (-11.9 F)
1973	-25.0 C (-13.0 F)
1974	-22.8 C (-9.0 F)
1975	-19.4 C (-2.9 F)
1976	-28.9 C (-20.0 F)
1977	-23.3 C (-9.9 F)
1978	-27.0 C (-16.6 F)
1979	-26.0 C (-14.8 F)
1980	-21.0 C (-5.8 F)
1981	-24.0 C (-11.2 F)
1982	-25.0 C (-13.0 F)
1983	-22.0 C (-7.6 F)

Wettest day (Rx1day)

The wettest day of the year at Petrolia Town, 1960 to 1983. The record is 73.6 mm (2.9 in) in 1981, marked on the chart; the median year is 48.2 mm (1.9 in).

Wettest day (Rx1day) at Petrolia Town by year
Year	Wettest day (Rx1day)
1960	19.1 mm (0.8 in)
1961	34.3 mm (1.4 in)
1962	70.6 mm (2.8 in)
1963	36.8 mm (1.4 in)
1964	56.4 mm (2.2 in)
1965	51.6 mm (2.0 in)
1966	48.5 mm (1.9 in)
1967	51.8 mm (2.0 in)
1968	71.1 mm (2.8 in)
1969	49.5 mm (1.9 in)
1970	34.5 mm (1.4 in)
1971	30.7 mm (1.2 in)
1972	54.4 mm (2.1 in)
1973	31.5 mm (1.2 in)
1974	37.8 mm (1.5 in)
1975	39.6 mm (1.6 in)
1976	58.2 mm (2.3 in)
1977	34.2 mm (1.3 in)
1978	25.8 mm (1.0 in)
1979	59.4 mm (2.3 in)
1980	38.1 mm (1.5 in)
1981	73.6 mm (2.9 in)
1982	47.8 mm (1.9 in)
1983	53.8 mm (2.1 in)

Wettest five days (Rx5day)

The wettest five days of the year at Petrolia Town, 1960 to 1983. The record is 120.9 mm (4.8 in) in 1967, marked on the chart; the median year is 66.4 mm (2.6 in).

Wettest five days (Rx5day) at Petrolia Town by year
Year	Wettest five days (Rx5day)
1960	34.3 mm (1.4 in)
1961	58.5 mm (2.3 in)
1962	86.3 mm (3.4 in)
1963	43.5 mm (1.7 in)
1964	59.2 mm (2.3 in)
1965	64.6 mm (2.5 in)
1966	85.6 mm (3.4 in)
1967	120.9 mm (4.8 in)
1968	95.5 mm (3.8 in)
1969	63.7 mm (2.5 in)
1970	71.6 mm (2.8 in)
1971	41.1 mm (1.6 in)
1972	83.6 mm (3.3 in)
1973	57.9 mm (2.3 in)
1974	68.8 mm (2.7 in)
1975	80.0 mm (3.1 in)
1976	68.1 mm (2.7 in)
1977	59.4 mm (2.3 in)
1978	59.8 mm (2.4 in)
1979	79.2 mm (3.1 in)
1980	48.3 mm (1.9 in)
1981	102.0 mm (4.0 in)
1982	51.2 mm (2.0 in)
1983	69.9 mm (2.8 in)

Longest dry spell (CDD)

The longest dry spell of the year at Petrolia Town, 1960 to 1983. The record is 29 days in 1963, marked on the chart; the median year is 15 days.

Longest dry spell (CDD) at Petrolia Town by year
Year	Longest dry spell (CDD)
1960	12 days
1961	19 days
1962	22 days
1963	29 days
1964	12 days
1965	15 days
1966	23 days
1967	20 days
1968	11 days
1969	15 days
1970	16 days
1971	13 days
1972	14 days
1973	28 days
1974	11 days
1975	15 days
1976	15 days
1977	12 days
1978	18 days
1979	16 days
1980	10 days
1981	12 days
1982	15 days
1983	12 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 Petrolia Town standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Petrolia Town 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).