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Canadian Climate Normals 1981-2010 Station Data

Temperature and Precipitation Graph

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Temperature and Precipitation Graph for 1981 to 2010 Canadian Climate Normals
O'LEARY

Symbol	Description
	Daily Maximum Temperature (°C)
	Daily Average Temperature (°C)
	Daily Minimum Temperature (°C)
	Precipitation (mm)

Normals Data

The minimum number of years used to calculate these Normals is indicated by a code for each element. A "+" beside an extreme date indicates that this date is the first occurrence of the extreme value. Values and dates in bold indicate all-time extremes for the location.

Data used in the calculation of these Normals may be subject to further quality assurance checks. This may result in minor changes to some values presented here.

O'LEARY
PRINCE EDWARD ISLAND

46°42'01.000" N

64°15'42.080" W

38.10 m

8300525

Temperature

1981 to 2010 Canadian Climate Normals station data
Temperature
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Year	Code
Daily Average (°C)	-8.6	-7.7	-3.2	2.9	9.4	14.8	18.6	18.4	14.3	8.2	2.4	-4.0	5.5	C
Standard Deviation	2.0	2.1	1.6	1.1	1.5	1.3	1.1	1.1	1.6	1.2	1.3	2.4	2.7	C
Daily Maximum (°C)	-4.6	-3.6	0.6	6.8	14.4	19.8	23.3	23.0	18.6	11.7	5.3	-0.8	9.6	C
Daily Minimum (°C)	-12.6	-11.7	-6.9	-1.1	4.5	9.8	13.9	13.8	10.1	4.6	-0.5	-7.1	1.4	C
Extreme Maximum (°C)	13.5	13.0	16.5	21.5	32.2	33.5	32.8	32.5	32.5	24.5	20.0	13.9
Date (yyyy/dd)	1999/ 24	1994/ 20	1993/ 27	1994/ 16	1977/ 22+	2001/ 27	1963/ 26	2001/ 02	2001/ 09	2002/ 02	1982/ 05	1973/ 17
Extreme Minimum (°C)	-31.0	-29.4	-25.6	-13.9	-6.1	-1.1	3.9	3.3	-1.1	-6.7	-15.0	-27.2
Date (yyyy/dd)	1982/ 18	1962/ 02+	1968/ 09	1969/ 01	1972/ 02	1978/ 02	1970/ 02	1963/ 28+	1971/ 28	1971/ 20	1964/ 25	1970/ 24

Precipitation

1981 to 2010 Canadian Climate Normals station data
Precipitation
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Year	Code
Rainfall (mm)	25.8	26.6	37.7	60.7	99.7	84.8	96.0	87.7	101.8	99.1	91.7	47.2	858.7	C
Snowfall (cm)	73.2	55.2	51.7	25.5	3.2	0.0	0.0	0.0	0.0	0.6	20.5	59.3	289.1	C
Precipitation (mm)	99.0	81.8	89.4	86.2	102.9	84.8	96.0	87.7	101.8	99.6	112.1	106.5	1147.8	C
Average Snow Depth (cm)	33	43	35	5	0	0	0	0	0	0	2	17	11	D
Median Snow Depth (cm)	36	43	34	2	0	0	0	0	0	0	0	13	11	D
Snow Depth at Month-end (cm)	35	42	11	1	0	0	0	0	0	0	5	25	10	C
Extreme Daily Rainfall (mm)	58.4	44.5	46.2	59.9	59.4	57.4	53.3	134.8	73.6	67.3	52.6	38.8
Date (yyyy/dd)	1958/ 17	1958/ 08	2003/ 30	1962/ 01	1967/ 26	1977/ 03	1976/ 13	1989/ 05	1999/ 22	1959/ 25+	2002/ 17	2002/ 14
Extreme Daily Snowfall (cm)	42.0	49.0	53.0	27.9	15.0	0.0	0.0	0.0	0.0	25.4	29.0	46.0
Date (yyyy/dd)	1987/ 11	1988/ 04	1997/ 06	1963/ 08+	1990/ 06	1957/ 01+	1957/ 01+	1957/ 01+	1957/ 01+	1974/ 20	1989/ 21	2003/ 07
Extreme Daily Precipitation (mm)	58.4	49.0	53.0	59.9	59.4	57.4	53.3	134.8	73.6	67.3	60.6	46.0
Date (yyyy/dd)	1958/ 17	1988/ 04	1997/ 06	1962/ 01	1967/ 26	1977/ 03	1976/ 13	1989/ 05	1999/ 22	1959/ 25+	2002/ 17	2003/ 07
Extreme Snow Depth (cm)	168	169	176	116	23	0	0	43	0	20	50	178
Date (yyyy/dd)	1971/ 01	1987/ 16+	1987/ 19	1997/ 03+	1961/ 03	1961/ 01+	1961/ 01+	1971/ 16	1961/ 01+	1974/ 20+	1989/ 28	1970/ 29

Days with Maximum Temperature

1981 to 2010 Canadian Climate Normals station data
Days with Maximum Temperature
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Year	Code
<= 0 °C	24.7	21.1	14.8	2.4	0.0	0.0	0.0	0.0	0.0	0.0	4.1	17.8	84.9	C
> 0 °C	6.3	7.1	16.3	27.6	31.0	30.0	31.0	31.0	30.0	31.0	25.9	13.2	280.4	C
> 10 °C	0.25	0.17	0.67	6.4	23.5	29.2	31.0	31.0	29.7	18.3	4.9	0.87	176.0	C
> 20 °C	0.0	0.0	0.0	0.09	4.9	13.6	25.0	23.7	9.3	0.91	0.0	0.0	77.4	C
> 30 °C	0.0	0.0	0.0	0.0	0.0	0.17	0.35	0.74	0.04	0.0	0.0	0.0	1.3	C
> 35 °C	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	C

Days with Minimum Temperature

1981 to 2010 Canadian Climate Normals station data
Days with Minimum Temperature
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Year	Code
> 0 °C	0.42	0.75	2.4	9.2	27.2	29.9	31.0	31.0	30.0	26.4	11.4	2.4	202.0	C
<= 2 °C	30.9	28.0	30.5	26.4	9.4	0.48	0.0	0.0	0.35	9.0	22.9	30.2	188.2	C
<= 0 °C	30.6	27.5	28.6	20.8	3.8	0.09	0.0	0.0	0.04	4.7	18.6	28.6	163.2	C
< -2 °C	29.1	25.9	24.0	8.7	0.22	0.0	0.0	0.0	0.0	0.61	10.0	23.9	122.4	C
< -10 °C	20.1	17.1	8.0	0.22	0.0	0.0	0.0	0.0	0.0	0.0	0.30	9.1	54.8	C
< -20 °C	3.1	2.3	0.38	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.39	6.2	C
< - 30 °C	0.04	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.04	C

Days with Rainfall

1981 to 2010 Canadian Climate Normals station data
Days with Rainfall
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Year	Code
>= 0.2 mm	3.5	3.2	5.3	9.5	13.4	12.7	12.4	12.1	11.7	13.1	12.1	6.4	115.4	C
>= 5 mm	2.0	1.7	2.5	4.3	6.9	5.5	5.4	4.6	5.4	5.7	5.4	2.9	52.0	C
>= 10 mm	0.79	0.96	1.0	1.9	3.3	3.0	3.2	2.8	3.6	3.1	3.4	1.5	28.5	C
>= 25 mm	0.17	0.21	0.25	0.30	0.61	0.48	0.87	0.65	0.87	0.95	0.65	0.39	6.4	C

Days With Snowfall

1981 to 2010 Canadian Climate Normals station data
Days With Snowfall
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Year	Code
>= 0.2 cm	9.5	8.2	7.5	4.3	0.43	0.0	0.0	0.0	0.0	0.09	3.2	9.0	42.2	C
>= 5 cm	5.4	4.4	4.0	2.0	0.22	0.0	0.0	0.0	0.0	0.04	1.7	4.5	22.2	C
>= 10 cm	2.5	1.7	1.9	0.96	0.17	0.0	0.0	0.0	0.0	0.04	0.70	2.2	10.1	C
>= 25 cm	0.50	0.25	0.08	0.04	0.0	0.0	0.0	0.0	0.0	0.0	0.04	0.22	1.1	C

Days with Precipitation

1981 to 2010 Canadian Climate Normals station data
Days with Precipitation
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Year	Code
>= 0.2 mm	11.6	10.1	11.4	12.6	13.7	12.7	12.4	12.1	11.7	13.1	14.4	13.4	149.2	C
>= 5 mm	7.1	5.8	6.3	6.0	7.0	5.5	5.4	4.6	5.4	5.7	6.7	7.4	72.9	C
>= 10 mm	3.5	2.8	3.1	3.0	3.5	3.0	3.2	2.8	3.6	3.1	4.0	3.9	39.6	C
>= 25 mm	0.75	0.50	0.38	0.35	0.61	0.48	0.87	0.65	0.87	1.0	0.78	0.61	7.9	C

Days with Snow Depth

1981 to 2010 Canadian Climate Normals station data
Days with Snow Depth
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Year	Code
>= 1 cm	27.9	26.6	28.7	10.3	0.17	0.0	0.0	0.0	0.0	0.0	5.6	20.9	120.0	D
>= 5 cm	25.4	25.2	25.4	6.9	0.0	0.0	0.0	0.0	0.0	0.0	3.8	15.9	102.5	D
>= 10 cm	24.0	23.6	22.5	4.9	0.0	0.0	0.0	0.0	0.0	0.0	2.4	12.2	89.5	D
>= 20 cm	20.1	20.3	17.6	2.5	0.0	0.0	0.0	0.0	0.0	0.0	0.83	8.6	69.9	D

Degree Days

1981 to 2010 Canadian Climate Normals station data
Degree Days
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Year	Code
Above 24 °C	0	0	0	0	0	0.1	0.2	0.6	0.1	0	0	0	1.1	C
Above 18 °C	0	0	0	0	0.3	11.7	43.4	43.7	9.4	0.3	0	0	108.7	C
Above 15 °C	0	0	0	0	5	43	115.9	112.3	33.4	2.1	0.1	0	311.8	C
Above 10 °C	0	0	0	1.7	42.2	148.8	267.1	261.7	133.9	23.9	3.1	0	882.4	C
Above 5 °C	0.3	0.4	1.7	20.3	144.4	294.2	422.1	416.7	279.9	107.3	22.7	1.4	1711.3	C
Above 0 °C	4.1	6.1	20.6	98	292.7	444.2	577.1	571.7	429.9	253	92.5	18.8	2808.7	C
Below 0 °C	270.9	222.2	118.5	12.1	0	0	0	0	0	0	21.3	141.6	786.6	C
Below 5 °C	422.1	357.8	254.6	84.5	6.7	0	0	0	0	9.3	101.4	279.2	1515.5	C
Below 10 °C	576.8	498.6	407.9	215.9	59.5	4.6	0	0	4	80.9	231.8	432.8	2512.8	C
Below 15 °C	731.8	639.9	562.9	364.2	177.3	48.8	3.8	5.6	53.5	214.1	378.8	587.8	3768.5	C
Below 18 °C	824.8	724.6	655.9	454.2	265.6	107.5	24.3	30	119.6	305.2	468.7	680.8	4661.2	C

Frost-Free

1981 to 2010 Canadian Climate Normals station data
Frost-Free
	Date/Days	Code
Average Date of Last Spring Frost	May 15	C
Average Date of First Fall Frost	Oct 15	C
Average Length of Frost-Free Period	151 Days	C

1981 to 2010 Canadian Climate Normals station data
Frost-Free
	10%	25%	33%	50%	66%	75%	90%
Probability of last temperature in spring <= 0°C, on or after (Date)	Jun 02	May 27	May 24	May 18	May 16	May 11	Apr 30
Probability of first temperature in fall <= 0°C, on or before (Date)	Sep 28	Oct 08	Oct 10	Oct 13	Oct 18	Oct 21	Oct 28
Probability of frost-free period equal to or less than indicated period (Days)	125	137	141	148	154	158	170

Legend

A = WMO "3 and 5 rule" (i.e. no more than 3 consecutive and no more than 5 total missing for either temperature or precipitation)
B = At least 25 years
C = At least 20 years

D = At least 15 years
+ = First or oldest date of occurrence of the extreme value

Station / Element Metadata

Statistics listed below are provided as a guide to determine the validity of Normals and Extremes calculations. For example, a station with 30 years of record between 1981 and 2010 with no missing years would be a more reliable normal than a station with 15 years of record and 2 missing years. Less than 100% possible observations indicates that out of the total number of observations used, some records were missing.

O'LEARY

Province/Territory

Latitude (dd mm):

46 42 N

Country

CAN

Longitude (ddd mm):

64 15 W

Time Zone

AST

Latitude (decimal degrees):

46.7 N

Climate ID:

8300525

Longitude (decimal degrees):

64.26 W

WMO ID:

Elevation (m):

38.1

TC ID:

Temperature

1981 to 2010 Canadian Climate Normals Element Metadata
Temperature
	Begin Year	End Year	Total Number of Years	Missing Years	Total Count of Observations	% of Possible Observations
Daily Average (°C)	1981	2004	24	0	8491	100
Standard Deviation	1981	2004	24	0	8491	100
Daily Maximum (°C)	1981	2004	24	0	8491	100
Daily Minimum (°C)	1981	2004	24	0	8491	100
Extreme Maximum (°C)	1960	2004			15837	99.9
Extreme Minimum (°C)	1960	2004			15831	99.8

Precipitation

1981 to 2010 Canadian Climate Normals Element Metadata
Precipitation
	Begin Year	End Year	Total Number of Years	Missing Years	Total Count of Observations	% of Possible Observations
Rainfall (mm)	1981	2004	24	0	8460	99.6
Snowfall (cm)	1981	2004	24	0	8460	99.6
Precipitation (mm)	1981	2004	24	0	8460	99.6
Average Snow Depth (cm)	1981	2004	24	3	7813	95.9
Median Snow Depth (cm)	1981	2004	24	3	7813	95.9
Snow Depth at Month-end (cm)	1981	2004	24	2	268	100
Extreme Daily Rainfall (mm)	1957	2004			17130	99.8
Extreme Daily Snowfall (cm)	1957	2004			17130	99.8
Extreme Daily Precipitation (mm)	1957	2004			17124	99.8
Extreme Snow Depth (cm)	1961	2004			15206	98.6

Days with Maximum Temperature

1981 to 2010 Canadian Climate Normals Element Metadata
Days with Maximum Temperature
	Begin Year	End Year	Total Number of Years	Missing Years	Total Count of Observations	% of Possible Observations
<= 0 °C	1981	2004	24	0	8491	100
> 0 °C	1981	2004	24	0	8491	100
> 10 °C	1981	2004	24	0	8491	100
> 20 °C	1981	2004	24	0	8491	100
> 30 °C	1981	2004	24	0	8491	100
> 35 °C	1981	2004	24	0	8491	100

Days with Minimum Temperature

1981 to 2010 Canadian Climate Normals Element Metadata
Days with Minimum Temperature
	Begin Year	End Year	Total Number of Years	Missing Years	Total Count of Observations	% of Possible Observations
> 0 °C	1981	2004	24	0	8491	100
<= 2 °C	1981	2004	24	0	8491	100
<= 0 °C	1981	2004	24	0	8491	100
< -2 °C	1981	2004	24	0	8491	100
< -10 °C	1981	2004	24	0	8491	100
< -20 °C	1981	2004	24	0	8491	100
< - 30 °C	1981	2004	24	0	8491	100

Days with Rainfall

1981 to 2010 Canadian Climate Normals Element Metadata
Days with Rainfall
	Begin Year	End Year	Total Number of Years	Missing Years	Total Count of Observations	% of Possible Observations
>= 0.2 mm	1981	2004	24	0	8460	99.6
>= 5 mm	1981	2004	24	0	8460	99.6
>= 10 mm	1981	2004	24	0	8460	99.6
>= 25 mm	1981	2004	24	0	8460	99.6

Days With Snowfall

1981 to 2010 Canadian Climate Normals Element Metadata
Days With Snowfall
	Begin Year	End Year	Total Number of Years	Missing Years	Total Count of Observations	% of Possible Observations
>= 0.2 cm	1981	2004	24	0	8491	100
>= 5 cm	1981	2004	24	0	8491	100
>= 10 cm	1981	2004	24	0	8491	100
>= 25 cm	1981	2004	24	0	8491	100

Days with Precipitation

1981 to 2010 Canadian Climate Normals Element Metadata
Days with Precipitation
	Begin Year	End Year	Total Number of Years	Missing Years	Total Count of Observations	% of Possible Observations
>= 0.2 mm	1981	2004	24	0	8460	99.6
>= 5 mm	1981	2004	24	0	8460	99.6
>= 10 mm	1981	2004	24	0	8460	99.6
>= 25 mm	1981	2004	24	0	8460	99.6

Days with Snow Depth

1981 to 2010 Canadian Climate Normals Element Metadata
Days with Snow Depth
	Begin Year	End Year	Total Number of Years	Missing Years	Total Count of Observations	% of Possible Observations
>= 1 cm	1981	2004	24	3	7695	94.5
>= 5 cm	1981	2004	24	3	7695	94.5
>= 10 cm	1981	2004	24	3	7695	94.5
>= 20 cm	1981	2004	24	3	7695	94.5

Degree Days

1981 to 2010 Canadian Climate Normals Element Metadata
Degree Days
	Begin Year	End Year	Total Number of Years	Missing Years	Total Count of Observations	% of Possible Observations
Above 24 °C	1981	2004	24	0	8491	100
Above 18 °C	1981	2004	24	0	8491	100
Above 15 °C	1981	2004	24	0	8491	100
Above 10 °C	1981	2004	24	0	8491	100
Above 5 °C	1981	2004	24	0	8491	100
Above 0 °C	1981	2004	24	0	8491	100
Below 0 °C	1981	2004	24	0	8491	100
Below 5 °C	1981	2004	24	0	8491	100
Below 10 °C	1981	2004	24	0	8491	100
Below 15 °C	1981	2004	24	0	8491	100
Below 18 °C	1981	2004	24	0	8491	100

Frost-Free

1981 to 2010 Canadian Climate Normals Element Metadata
Frost-Free
	Begin Year	End Year	Total Number of Years	Missing Years	Total Count of Observations	% of Possible Observations
Average Date of Last Spring Frost	1981	2003	23	0	23	100.0
Average Date of First Fall Frost	1981	2003	23	0	23	100.0
Average Length of Frost-Free Period	1981	2003	23	0	23	100.0
Probability of last temperature in spring <= 0°C, on or after (Date)
10 %	1961	2003			41	95.3
25 %	1961	2003			41	95.3
33 %	1961	2003			41	95.3
50 %	1961	2003			41	95.3
66 %	1961	2003			41	95.3
75 %	1961	2003			41	95.3
90 %	1961	2003			41	95.3
Probability of first temperature in fall <= 0°C, on or before (Date)
10 %	1961	2003			41	95.3
25 %	1961	2003			41	95.3
33 %	1961	2003			41	95.3
50 %	1961	2003			41	95.3
66 %	1961	2003			41	95.3
75 %	1961	2003			41	95.3
90 %	1961	2003			41	95.3
Probability of frost-free period equal to or less than indicated period (Days)
10 %	1961	2003			41	95.3
25 %	1961	2003			41	95.3
33 %	1961	2003			41	95.3
50 %	1961	2003			41	95.3
66 %	1961	2003			41	95.3
75 %	1961	2003			41	95.3
90 %	1961	2003			41	95.3

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Date modified:: 2025-02-26

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Notices

Canadian Climate Normals 1981-2010 Station Data

Temperature and Precipitation Graph for 1981 to 2010 Canadian Climate Normals
O'LEARY

Legend

Page details

Notices

Canadian Climate Normals 1981-2010 Station Data

Temperature and Precipitation Graph for 1981 to 2010 Canadian Climate NormalsO'LEARY

Page details

Temperature and Precipitation Graph for 1981 to 2010 Canadian Climate Normals
O'LEARY