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
PETERBOROUGH TRENT U

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.

PETERBOROUGH TRENT U
ONTARIO

44°22'00.000" N

78°18'00.000" W

198.10 m

6166455

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)	-8.4	-6.5	-1.3	6.3	12.8	18.0	20.7	19.4	15.0	8.4	2.4	-4.0	6.9	C
Standard Deviation	3.3	2.7	2.0	1.5	1.8	1.4	1.2	1.3	1.3	1.3	1.4	3.1	1.4	C
Daily Maximum (°C)	-3.7	-1.5	3.7	11.7	18.7	24.0	26.8	25.4	20.6	13.4	6.3	0.0	12.1	C
Daily Minimum (°C)	-13.0	-11.4	-6.4	0.8	6.8	11.9	14.6	13.3	9.4	3.4	-1.5	-7.9	1.7	C
Extreme Maximum (°C)	12.0	12.0	25.0	30.5	33.0	34.5	36.5	36.0	34.0	28.3	21.1	18.5
Date (yyyy/dd)	1995/ 14+	1984/ 23+	1998/ 30+	1990/ 28	2006/ 30	1988/ 14	1988/ 07+	2006/ 01	2002/ 09	1971/ 02	1974/ 01	1982/ 03
Extreme Minimum (°C)	-35.5	-33.0	-29.0	-15.6	-3.5	0.0	5.0	2.0	-3.5	-8.9	-17.2	-33.0
Date (yyyy/dd)	1994/ 16	1979/ 18	1984/ 08	1972/ 07	1984/ 03	1980/ 12	1968/ 30	1986/ 28	1980/ 29+	1975/ 31	1977/ 27	1980/ 25

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)	22.4	23.1	34.0	60.9	88.7	83.0	73.6	87.0	92.4	75.7	73.3	35.0	749.0	C
Snowfall (cm)	38.9	28.8	23.7	6.1	0.0	0.0	0.0	0.0	0.0	1.4	13.9	34.3	147.2	C
Precipitation (mm)	57.3	48.8	56.5	66.4	88.7	83.0	73.6	87.0	92.4	77.0	85.5	66.0	882.1	C
Snow Depth at Month-end (cm)	19	14	2	0	0	0	0	0	0	0	2	12	4	D
Extreme Daily Rainfall (mm)	44.6	46.1	51.1	36.8	41.5	68.4	239.8	60.0	60.8	57.3	47.6	36.6
Date (yyyy/dd)	1995/ 15	1985/ 23	1980/ 21	1984/ 04	2006/ 11	2002/ 11	2004/ 14	1995/ 31	1996/ 11	1995/ 05	1999/ 02	1972/ 12
Extreme Daily Snowfall (cm)	22.8	30.0	35.2	24.1	4.3	0.0	0.0	0.0	0.0	14.5	25.7	33.0
Date (yyyy/dd)	1982/ 31	2003/ 22	1985/ 04	1975/ 03	1977/ 08	1968/ 01+	1968/ 01+	1968/ 01+	1968/ 01+	1976/ 22	1971/ 29	1983/ 06
Extreme Daily Precipitation (mm)	45.0	46.1	62.4	36.8	41.5	68.4	239.8	60.0	60.8	57.3	47.6	51.3
Date (yyyy/dd)	1979/ 24	1985/ 23	1980/ 21	1984/ 04	2006/ 11	2002/ 11	2004/ 14	1995/ 31	1996/ 11	1995/ 05	1999/ 02	1972/ 12
Extreme Snow Depth (cm)	50	55	45	18	0	0	0	0	0	7	23	53
Date (yyyy/dd)	1984/ 31	2001/ 09	2001/ 06	1987/ 02+	1982/ 01+	1982/ 01+	1982/ 01+	1982/ 01+	1982/ 01+	1992/ 19	1997/ 16	1992/ 12

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	21.1	16.0	8.3	0.80	0.0	0.0	0.0	0.0	0.0	0.0	3.6	14.7	64.4	C
> 0 °C	9.9	12.3	22.7	29.2	31.0	30.0	31.0	31.0	30.0	31.0	26.4	16.4	300.9	C
> 10 °C	0.21	0.35	4.9	17.5	29.2	30.0	31.0	31.0	29.7	22.3	7.2	0.91	204.1	C
> 20 °C	0.0	0.0	0.57	2.9	11.8	24.2	30.1	28.5	15.9	3.2	0.08	0.0	117.1	C
> 30 °C	0.0	0.0	0.0	0.04	0.28	2.5	4.6	2.5	0.54	0.0	0.0	0.0	10.5	C
> 35 °C	0.0	0.0	0.0	0.0	0.0	0.0	0.13	0.08	0.0	0.0	0.0	0.0	0.21	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	1.5	1.9	4.4	15.9	28.8	30.0	31.0	31.0	29.2	22.3	10.8	3.4	210.1	C
<= 2 °C	30.8	27.8	29.1	19.0	5.6	0.12	0.0	0.04	2.2	13.2	23.8	30.1	181.8	C
<= 0 °C	29.5	26.4	26.7	14.1	2.2	0.0	0.0	0.0	0.77	8.7	19.2	27.7	155.2	C
< -2 °C	27.3	23.6	21.0	7.2	0.24	0.0	0.0	0.0	0.08	2.8	11.9	22.7	116.9	C
< -10 °C	18.3	15.0	7.7	0.28	0.0	0.0	0.0	0.0	0.0	0.0	1.3	10.6	53.1	C
< -20 °C	6.9	4.0	0.91	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	2.0	13.8	C
< - 30 °C	0.50	0.09	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.09	0.68	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	3.8	3.8	6.5	11.0	12.8	11.2	10.1	11.4	11.8	14.2	11.2	5.7	113.6	C
>= 5 mm	1.4	1.4	2.4	4.4	6.4	4.8	3.4	4.6	5.3	4.7	4.5	2.2	45.6	C
>= 10 mm	0.58	0.76	1.2	2.0	3.4	2.6	2.0	3.0	2.9	2.4	2.7	1.6	25.0	C
>= 25 mm	0.13	0.24	0.08	0.04	0.35	0.81	0.60	0.88	0.72	0.31	0.35	0.08	4.6	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	11.0	6.6	5.8	2.0	0.0	0.0	0.0	0.0	0.0	0.23	3.8	8.2	37.6	C
>= 5 cm	2.9	2.1	1.6	0.36	0.0	0.0	0.0	0.0	0.0	0.15	0.96	2.2	10.2	C
>= 10 cm	0.73	0.67	0.67	0.08	0.0	0.0	0.0	0.0	0.0	0.04	0.42	0.84	3.5	C
>= 25 cm	0.0	0.08	0.04	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.12	0.24	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	14.0	9.3	11.3	12.0	12.8	11.2	10.1	11.4	11.8	14.3	14.2	12.8	145.2	C
>= 5 mm	4.0	3.0	4.0	4.6	6.4	4.8	3.4	4.6	5.3	4.8	5.3	4.1	54.3	C
>= 10 mm	1.2	1.5	1.9	2.1	3.4	2.6	2.0	3.0	2.9	2.4	2.8	2.4	28.2	C
>= 25 mm	0.14	0.21	0.17	0.12	0.35	0.81	0.60	0.88	0.72	0.31	0.42	0.24	5.0	C

Wind

1981 to 2010 Canadian Climate Normals station data
Wind
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Year	Code
Maximum Hourly Speed (km/h)	37	39	40	47	35	35	34	31	31	37	43	34
Date (yyyy/dd)	1990/ 26	1988/ 20+	1982/ 13	1984/ 30	1983/ 07	1969/ 27	1968/ 31	1986/ 11	1988/ 20	1983/ 14+	1991/ 30	1982/ 28
Direction of Maximum Hourly Speed	SW	W	SW	SW	SW	SW	SW	W	SW	SW	S	SW

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	0.1	1.7	6.5	3.3	0.3	0	0	0	11.9	C
Above 18 °C	0	0	0	0.9	8.1	43	91	64.1	15.7	0.5	0	0	223.2	C
Above 15 °C	0	0	0.1	3.6	26.4	101.1	176.7	139.3	49.2	3.9	0	0	500.4	C
Above 10 °C	0	0	2.3	19.4	103.4	239.3	331.2	291.2	156.8	33	2.1	0.2	1178.9	C
Above 5 °C	0.4	0.6	13.3	76	239.1	389.1	486.2	446.2	300.6	118.2	24.6	3.4	2097.6	C
Above 0 °C	7.8	12.3	57.3	194.3	393.5	539.1	641.2	601.2	450.5	260.8	97.5	24.8	3280.2	C
Below 0 °C	267.4	187.4	93.4	6.3	0	0	0	0	0	0.3	25	146	725.8	C
Below 5 °C	415	317	204.4	38	0.6	0	0	0	0.1	12.7	102.1	279.6	1369.5	C
Below 10 °C	569.6	457.8	348.4	131.3	19.9	0.2	0	0.1	6.3	82.5	229.6	431.5	2277.1	C
Below 15 °C	724.6	599.1	501.2	265.6	97.9	12	0.4	3.2	48.8	208.4	377.5	586.2	3424.9	C
Below 18 °C	817.6	683.8	594.1	352.8	172.6	43.9	7.7	21	105.2	298.1	467.5	679.2	4243.5	C

Evaporation

1981 to 2010 Canadian Climate Normals station data
Evaporation
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Year	Code
Lake Evaporation (mm)					3.5	4	4.3	3.5	2.2	1.2

Bright Sunshine

1981 to 2010 Canadian Climate Normals station data
Bright Sunshine
	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Year	Code
Extreme Daily	9.0	11.2	10.1	13.6	14.5	14.9	14.5	13.9	12.4	9.9	9.6	8.4
Date (yyyy/dd)	1991/ 28	1982/ 25	1991/ 31	1982/ 29	1989/ 28	1988/ 18	1989/ 02+	1990/ 01	1991/ 01	1984/ 05	1987/ 01	1990/ 19

Frost-Free

1981 to 2010 Canadian Climate Normals station data
Frost-Free
Probability of last temperature in spring <= 0°C, on or after (Date)	10%	25%	33%	50%	66%	75%	90%
Date	May 21	May 16	May 12	May 09	May 04	May 02	Apr 25
Probability of first temperature in fall <= 0°C, on or before (Date)	10%	25%	33%	50%	66%	75%	90%
Date	Sep 20	Sep 24	Sep 27	Sep 30	Oct 05	Oct 13	Oct 20
Probability of frost-free period equal to or less than indicated period (Days)	10%	25%	33%	50%	66%	75%	90%
Days	128	138	141	148	150	156	162

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
+ = Most recent 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.

PETERBOROUGH TRENT U

Province/Territory

Latitude (dd mm):

44 22 N

Country

CAN

Longitude (ddd mm):

78 18 W

Time Zone

EST

Latitude (decimal degrees):

44.37 N

Climate ID:

6166455

Longitude (decimal degrees):

78.3 W

WMO ID:

Elevation (m):

198.1

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	2006	26	1	9169	97.8
Standard Deviation	1981	2006	26	1	9169	97.8
Daily Maximum (°C)	1981	2006	26	1	9175	97.9
Daily Minimum (°C)	1981	2006	26	1	9173	97.8
Extreme Maximum (°C)	1968	2006			13963	99.5
Extreme Minimum (°C)	1968	2006			13989	99.5

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	2006	26	1	9132	97.4
Snowfall (cm)	1981	2006	26	1	9132	97.4
Precipitation (mm)	1981	2006	26	1	9132	97.4
Snow Depth at Month-end (cm)	1981	2006	24	5	242	92.6
Extreme Daily Rainfall (mm)	1968	2006			14045	99.9
Extreme Daily Snowfall (cm)	1968	2006			14022	99.7
Extreme Daily Precipitation (mm)	1968	2006			14007	99.6
Extreme Snow Depth (cm)	1980	2006			6958	86.7

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	2006	26	2	8949	95.5
> 0 °C	1981	2006	26	2	8949	95.5
> 10 °C	1981	2006	26	2	8949	95.5
> 20 °C	1981	2006	26	2	8949	95.5
> 30 °C	1981	2006	26	2	8949	95.5
> 35 °C	1981	2006	26	2	8949	95.5

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	2006	26	2	8948	95.5
<= 2 °C	1981	2006	26	2	8948	95.5
<= 0 °C	1981	2006	26	2	8948	95.5
< -2 °C	1981	2006	26	2	8948	95.5
< -10 °C	1981	2006	26	2	8948	95.5
< -20 °C	1981	2006	26	2	8948	95.5
< - 30 °C	1981	2006	26	2	8948	95.5

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	2006	26	1	9222	98.4
>= 5 mm	1981	2006	26	1	9222	98.4
>= 10 mm	1981	2006	26	1	9222	98.4
>= 25 mm	1981	2006	26	1	9222	98.4

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	2006	26	1	9193	98
>= 5 cm	1981	2006	26	1	9193	98
>= 10 cm	1981	2006	26	1	9193	98
>= 25 cm	1981	2006	26	1	9193	98

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	2006	26	1	9132	97.4
>= 5 mm	1981	2006	26	1	9132	97.4
>= 10 mm	1981	2006	26	1	9132	97.4
>= 25 mm	1981	2006	26	1	9132	97.4

Wind

1981 to 2010 Canadian Climate Normals Element Metadata
Wind
	Begin Year	End Year	Total Number of Years	Missing Years	Total Count of Observations	% of Possible Observations
Maximum Hourly Speed (km/h)	1968	1992			93427	92.1

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	2006	26	2	8887	94.8
Above 18 °C	1981	2006	26	2	8887	94.8
Above 15 °C	1981	2006	26	2	8887	94.8
Above 10 °C	1981	2006	26	2	8887	94.8
Above 5 °C	1981	2006	26	2	8887	94.8
Above 0 °C	1981	2006	26	2	8887	94.8
Below 0 °C	1981	2006	26	2	8887	94.8
Below 5 °C	1981	2006	26	2	8887	94.8
Below 10 °C	1981	2006	26	2	8887	94.8
Below 15 °C	1981	2006	26	2	8887	94.8
Below 18 °C	1981	2006	26	2	8887	94.8

Evaporation

1981 to 2010 Canadian Climate Normals Element Metadata
Evaporation
	Begin Year	End Year	Total Number of Years	Missing Years	Total Count of Observations	% of Possible Observations
Lake Evaporation (mm)	1982	1992	11	1	1268	63

Bright Sunshine

1981 to 2010 Canadian Climate Normals Element Metadata
Bright Sunshine
	Begin Year	End Year	Total Number of Years	Missing Years	Total Count of Observations	% of Possible Observations
Extreme Daily	1982	1991			85023	98.7

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	2005	13	3	13	52.0
Average Date of First Fall Frost	1981	2005	13	3	13	52.0
Average Length of Frost-Free Period	1981	2005	13	3	13	52.0
Probability of last temperature in spring <= 0°C, on or after (Date)
10 %	1969	2005			25	67.6
25 %	1969	2005			25	67.6
33 %	1969	2005			25	67.6
50 %	1969	2005			25	67.6
66 %	1969	2005			25	67.6
75 %	1969	2005			25	67.6
90 %	1969	2005			25	67.6
Probability of first temperature in fall <= 0°C, on or before (Date)
10 %	1969	2005			25	67.6
25 %	1969	2005			25	67.6
33 %	1969	2005			25	67.6
50 %	1969	2005			25	67.6
66 %	1969	2005			25	67.6
75 %	1969	2005			25	67.6
90 %	1969	2005			25	67.6
Probability of frost-free period equal to or less than indicated period (Days)
10 %	1969	2005			25	67.6
25 %	1969	2005			25	67.6
33 %	1969	2005			25	67.6
50 %	1969	2005			25	67.6
66 %	1969	2005			25	67.6
75 %	1969	2005			25	67.6
90 %	1969	2005			25	67.6

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Date modified:: 2024-10-01

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Canadian Climate Normals 1981-2010 Station Data

Temperature and Precipitation Graph for 1981 to 2010 Canadian Climate Normals
PETERBOROUGH TRENT U

Legend

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Canadian Climate Normals 1981-2010 Station Data

Temperature and Precipitation Graph for 1981 to 2010 Canadian Climate NormalsPETERBOROUGH TRENT U

Page details

Temperature and Precipitation Graph for 1981 to 2010 Canadian Climate Normals
PETERBOROUGH TRENT U