O'Leary Weather Records (CA008300525)

Record envelope, standing records and threshold days for O'Leary (CA008300525), Prince Edward Island, Canada, with 48 years of record.

Key Facts for O'Leary

O'Leary (CA008300525) is a weather station in Prince Edward Island, Canada at 46.70 latitude and -64.27 longitude, 38 m (125 ft) above sea level.
The station reports from 1957 to 2004, 48 years of record.
1,464 records set at O'Leary still stand.
Records are tracked for no element yet: an element needs 30 years of data to be eligible.

About the Station

Location: Prince Edward Island, Canada, 46.70 latitude, -64.27 longitude.
Elevation: 38 m (125 ft).
Period of record: 1957 to 2004, 48 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 O'Leary. 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 O'Leary, 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)	-31.0 C (-23.8 F)	n/a	n/a
Feb	11.1 C (52.0 F)	-29.4 C (-20.9 F)	n/a	n/a
Mar	13.9 C (57.0 F)	-25.6 C (-14.1 F)	n/a	n/a
Apr	20.6 C (69.1 F)	-13.9 C (7.0 F)	n/a	n/a
May	32.2 C (90.0 F)	-6.1 C (21.0 F)	n/a	n/a
Jun	31.7 C (89.1 F)	-1.1 C (30.0 F)	n/a	n/a
Jul	32.8 C (91.0 F)	3.9 C (39.0 F)	n/a	n/a
Aug	32.2 C (90.0 F)	3.3 C (37.9 F)	n/a	n/a
Sep	29.4 C (84.9 F)	-1.1 C (30.0 F)	n/a	n/a
Oct	23.9 C (75.0 F)	-6.7 C (19.9 F)	n/a	n/a
Nov	20.0 C (68.0 F)	-15.0 C (5.0 F)	n/a	n/a
Dec	13.9 C (57.0 F)	-27.2 C (-17.0 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at O'Leary still stand. 1972 holds the most, with 104.

Standing records at O'Leary by the year they were set
Year set	Standing records
1960	3
1961	63
1962	71
1963	79
1964	60
1965	59
1966	54
1967	65
1968	60
1969	50
1970	52
1971	62
1972	104
1973	63
1974	56
1975	63
1976	72
1977	49
1978	45
1979	88
1980	43
1981	72
1982	71
1983	60

Wettest Day of Each Month

Oct: 67.3 mm (2.6 in)

The wettest day on record for each calendar month at O'Leary. The most was 67.3 mm (2.6 in) on 25 October 1959.

Record daily precipitation for each month at O'Leary
Month	Record daily precipitation (mm)	Date
Jan	58.4 mm (2.3 in)	17 January 1958
Feb	44.5 mm (1.8 in)	8 February 1958
Mar	40.0 mm (1.6 in)	2 March 1983
Apr	59.9 mm (2.4 in)	1 April 1962
May	59.4 mm (2.3 in)	26 May 1967
Jun	57.4 mm (2.3 in)	3 June 1977
Jul	53.3 mm (2.1 in)	13 July 1976
Aug	57.2 mm (2.3 in)	2 August 1973
Sep	58.4 mm (2.3 in)	14 September 1977
Oct	67.3 mm (2.6 in)	25 October 1959
Nov	51.6 mm (2.0 in)	13 November 1975
Dec	42.4 mm (1.7 in)	1 December 1964

Period of Record Coverage

1960 to 1983

24 years of record at O'Leary, 1960 to 1983. 1 years have data for under 90 percent of days and are left out of rankings: 1960.

Days with data per year at O'Leary
Year	Days with data	Share of year	Complete
1960	44	12%	No
1961	365	100%	Yes
1962	364	100%	Yes
1963	365	100%	Yes
1964	366	100%	Yes
1965	365	100%	Yes
1966	365	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	365	100%	Yes
1976	364	99%	Yes
1977	365	100%	Yes
1978	365	100%	Yes
1979	365	100%	Yes
1980	363	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

23 complete years, 1961 to 1983

One stripe for each of 23 complete years at O'Leary, 1961 to 1983. Blue stripes are years cooler than the station's own mean of 4.9 C (40.8 F); red stripes are warmer. The coolest year was 1972, at 3.5 C (38.3 F), and the warmest was 1979, at 6.4 C (43.4 F). The strongest colour marks a difference of 1.5 C (2.7 F).

Annual mean temperature at O'Leary as warming stripes, 1961 to 1983
Year	Annual mean temperature	Difference from the station mean
1961	4.8 C	-0.06 C
1962	4.0 C	-0.83 C
1963	4.1 C	-0.74 C
1964	4.4 C	-0.48 C
1965	3.9 C	-0.93 C
1966	5.5 C	+0.65 C
1967	4.3 C	-0.58 C
1968	4.4 C	-0.42 C
1969	5.4 C	+0.57 C
1970	4.7 C	-0.15 C
1971	4.6 C	-0.26 C
1972	3.5 C	-1.35 C
1973	5.6 C	+0.72 C
1974	4.5 C	-0.37 C
1975	5.0 C	+0.16 C
1976	5.0 C	+0.10 C
1977	5.4 C	+0.51 C
1978	4.6 C	-0.25 C
1979	6.4 C	+1.50 C
1980	4.8 C	-0.07 C
1981	6.1 C	+1.19 C
1982	4.8 C	-0.09 C
1983	6.1 C	+1.26 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

1957 to 1983

Yearly extremes at O'Leary: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	32.8 C (91.0 F)	1963	30.6 C (87.0 F)	24
Coldest night (TNn)	-31.0 C (-23.8 F)	1982	-26.4 C (-15.5 F)	24
Wettest day (Rx1day)	67.3 mm (2.6 in)	1959	42.7 mm (1.7 in)	27
Wettest five days (Rx5day)	109.7 mm (4.3 in)	1973	76.2 mm (3.0 in)	27
Longest dry spell (CDD)	33 days	1957	15 days	27

Hottest day (TXx)

The hottest day of the year at O'Leary, 1957 to 1983. The record is 32.8 C (91.0 F) in 1963, marked on the chart; the median year is 30.6 C (87.0 F).

Hottest day (TXx) at O'Leary by year
Year	Hottest day (TXx)
1957	n/a
1958	n/a
1959	n/a
1960	12.2 C (54.0 F)
1961	29.4 C (84.9 F)
1962	31.1 C (88.0 F)
1963	32.8 C (91.0 F)
1964	28.9 C (84.0 F)
1965	31.1 C (88.0 F)
1966	27.8 C (82.0 F)
1967	31.7 C (89.1 F)
1968	30.0 C (86.0 F)
1969	28.9 C (84.0 F)
1970	31.1 C (88.0 F)
1971	28.9 C (84.0 F)
1972	31.1 C (88.0 F)
1973	28.3 C (82.9 F)
1974	30.6 C (87.1 F)
1975	32.2 C (90.0 F)
1976	32.2 C (90.0 F)
1977	32.2 C (90.0 F)
1978	31.7 C (89.1 F)
1979	29.4 C (84.9 F)
1980	30.5 C (86.9 F)
1981	30.0 C (86.0 F)
1982	31.0 C (87.8 F)
1983	29.5 C (85.1 F)

Coldest night (TNn)

The coldest night of the year at O'Leary, 1957 to 1983. The record is -31.0 C (-23.8 F) in 1982, marked on the chart; the median year is -26.4 C (-15.5 F).

Coldest night (TNn) at O'Leary by year
Year	Coldest night (TNn)
1957	n/a
1958	n/a
1959	n/a
1960	-18.3 C (-0.9 F)
1961	-26.1 C (-15.0 F)
1962	-29.4 C (-20.9 F)
1963	-23.9 C (-11.0 F)
1964	-22.2 C (-8.0 F)
1965	-29.4 C (-20.9 F)
1966	-27.2 C (-17.0 F)
1967	-28.9 C (-20.0 F)
1968	-25.6 C (-14.1 F)
1969	-21.7 C (-7.1 F)
1970	-27.2 C (-17.0 F)
1971	-27.2 C (-17.0 F)
1972	-26.7 C (-16.1 F)
1973	-27.2 C (-17.0 F)
1974	-26.1 C (-15.0 F)
1975	-24.4 C (-11.9 F)
1976	-30.0 C (-22.0 F)
1977	-26.7 C (-16.1 F)
1978	-23.0 C (-9.4 F)
1979	-23.3 C (-9.9 F)
1980	-26.0 C (-14.8 F)
1981	-28.5 C (-19.3 F)
1982	-31.0 C (-23.8 F)
1983	-22.0 C (-7.6 F)

Wettest day (Rx1day)

The wettest day of the year at O'Leary, 1957 to 1983. The record is 67.3 mm (2.6 in) in 1959, marked on the chart; the median year is 42.7 mm (1.7 in).

Wettest day (Rx1day) at O'Leary by year
Year	Wettest day (Rx1day)
1957	38.1 mm (1.5 in)
1958	58.4 mm (2.3 in)
1959	67.3 mm (2.6 in)
1960	43.2 mm (1.7 in)
1961	45.5 mm (1.8 in)
1962	59.9 mm (2.4 in)
1963	41.1 mm (1.6 in)
1964	42.4 mm (1.7 in)
1965	40.9 mm (1.6 in)
1966	38.6 mm (1.5 in)
1967	59.4 mm (2.3 in)
1968	67.3 mm (2.6 in)
1969	41.9 mm (1.6 in)
1970	42.7 mm (1.7 in)
1971	39.6 mm (1.6 in)
1972	32.3 mm (1.3 in)
1973	57.2 mm (2.3 in)
1974	47.8 mm (1.9 in)
1975	57.2 mm (2.3 in)
1976	58.9 mm (2.3 in)
1977	58.4 mm (2.3 in)
1978	33.3 mm (1.3 in)
1979	41.0 mm (1.6 in)
1980	34.0 mm (1.3 in)
1981	45.0 mm (1.8 in)
1982	40.4 mm (1.6 in)
1983	40.0 mm (1.6 in)

Wettest five days (Rx5day)

The wettest five days of the year at O'Leary, 1957 to 1983. The record is 109.7 mm (4.3 in) in 1973, marked on the chart; the median year is 76.2 mm (3.0 in).

Wettest five days (Rx5day) at O'Leary by year
Year	Wettest five days (Rx5day)
1957	76.2 mm (3.0 in)
1958	100.3 mm (3.9 in)
1959	108.5 mm (4.3 in)
1960	61.0 mm (2.4 in)
1961	87.7 mm (3.5 in)
1962	75.1 mm (3.0 in)
1963	90.1 mm (3.5 in)
1964	63.0 mm (2.5 in)
1965	61.2 mm (2.4 in)
1966	51.5 mm (2.0 in)
1967	67.0 mm (2.6 in)
1968	86.3 mm (3.4 in)
1969	65.9 mm (2.6 in)
1970	76.1 mm (3.0 in)
1971	80.3 mm (3.2 in)
1972	77.0 mm (3.0 in)
1973	109.7 mm (4.3 in)
1974	64.6 mm (2.5 in)
1975	76.3 mm (3.0 in)
1976	81.2 mm (3.2 in)
1977	97.3 mm (3.8 in)
1978	54.1 mm (2.1 in)
1979	77.3 mm (3.0 in)
1980	62.6 mm (2.5 in)
1981	105.0 mm (4.1 in)
1982	74.0 mm (2.9 in)
1983	64.8 mm (2.6 in)

Longest dry spell (CDD)

The longest dry spell of the year at O'Leary, 1957 to 1983. The record is 33 days in 1957, marked on the chart; the median year is 15 days.

Longest dry spell (CDD) at O'Leary by year
Year	Longest dry spell (CDD)
1957	33 days
1958	25 days
1959	20 days
1960	30 days
1961	22 days
1962	13 days
1963	14 days
1964	20 days
1965	18 days
1966	12 days
1967	15 days
1968	14 days
1969	16 days
1970	22 days
1971	10 days
1972	13 days
1973	15 days
1974	13 days
1975	19 days
1976	17 days
1977	14 days
1978	11 days
1979	15 days
1980	11 days
1981	20 days
1982	12 days
1983	11 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.

Frost Dates and Growing Season

23 years with a frost

Across 23 years with a frost, the median last spring frost at O'Leary falls on 21 May and the median first autumn frost on 17 October, which leaves a median of 145 days between them.

Frost dates and growing season at O'Leary
Measure	Median, all years	Earliest period	Recent period (1961 to 1983)	Recent against earliest	Fitted trend
Last spring frost	21 May	n/a	21 May	n/a	n/a
First autumn frost	17 October	n/a	17 October	n/a	n/a
Growing days	145 days	n/a	145 days	n/a	n/a

A frost day is a day with a daily minimum at or below 0 C (32 F). The last spring frost and the first autumn frost are the last and first such days of the cold season, and growing days are the days between them. A negative trend for the last spring frost means it comes earlier.

Download the Data

Data for O'Leary standing records by year: CSV or JSON. Field meanings are on the data page.
Data for O'Leary 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 2026-10-13 (13 October 2026). Records are computed by this site and are not official.

Data as of 2025-12-31. Last revised 31 December 2025 (2025-12-31).