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
ILDERTON BEAR CREEK

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.

ILDERTON BEAR CREEK
ONTARIO

43°03'00.000" N

81°26'00.000" W

266.70 m

6143722

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)	-5.6	-4.4	0.4	7.3	13.9	19.0	21.2	20.1	16.1	9.9	3.4	-2.6	8.2	C
Standard Deviation	2.7	2.6	1.9	1.5	2.3	1.2	1.2	1.3	1.0	1.5	1.6	3.0	0.8	C
Daily Maximum (°C)	-2.1	-0.6	4.6	12.3	19.7	24.8	27.0	25.8	21.3	14.4	6.7	0.6	12.9	C
Daily Minimum (°C)	-9.1	-8.1	-3.8	2.2	8.0	13.1	15.4	14.5	10.8	5.2	0.1	-5.7	3.6	C
Extreme Maximum (°C)	15.0	20.0	25.5	30.5	33.0	37.5	37.0	37.0	33.5	28.3	22.2	19.0
Date (yyyy/dd)	1995/ 13	2000/ 26	2000/ 08	1990/ 25	1987/ 30	1988/ 25	1988/ 06	1988/ 02	1983/ 10	1971/ 02	1974/ 01	1982/ 03
Extreme Minimum (°C)	-31.5	-28.0	-26.7	-13.0	-2.2	-1.1	5.5	2.5	-2.0	-7.2	-16.5	-24.0
Date (yyyy/dd)	1994/ 19	1994/ 10	1978/ 02	1982/ 07	1973/ 18	1972/ 11	1980/ 09	1982/ 29	1993/ 30	1976/ 27	1999/ 30	2000/ 28

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)	28.7	30.6	41.8	81.2	92.0	85.1	89.8	97.6	104.4	77.6	80.4	44.5	853.6	C
Snowfall (cm)	45.6	32.0	22.7	4.6	0.0	0.0	0.0	0.0	0.0	3.1	16.6	45.4	170.0	C
Precipitation (mm)	74.3	62.6	64.4	85.8	92.0	85.1	89.8	97.6	104.4	80.6	97.0	89.9	1023.6	C
Snow Depth at Month-end (cm)	16	6	1	0	0	0	0	0	0	0	1	10	3	D
Extreme Daily Rainfall (mm)	34.6	43.8	40.0	65.2	59.8	98.8	84.2	75.8	65.0	65.6	47.4	36.8
Date (yyyy/dd)	1994/ 27	1990/ 22	1984/ 15	1979/ 13	1991/ 25	2000/ 11	1988/ 16	1984/ 11	1976/ 17	1985/ 18	1992/ 12	1972/ 05
Extreme Daily Snowfall (cm)	31.8	31.4	25.9	18.5	0.0	0.0	0.0	0.0	0.0	18.4	27.4	53.3
Date (yyyy/dd)	1978/ 26	1991/ 14	1973/ 17	1975/ 03	1971/ 01	1971/ 01	1971/ 01	1971/ 01	1971/ 01	1988/ 11	1973/ 09	1977/ 06
Extreme Daily Precipitation (mm)	34.6	43.8	40.0	65.2	59.8	98.8	84.2	75.8	65.0	65.6	47.4	53.3
Date (yyyy/dd)	1994/ 27	1990/ 22	1984/ 15	1979/ 13	1991/ 25	2000/ 11	1988/ 16	1984/ 11	1976/ 17	1985/ 18	1992/ 12	1977/ 06
Extreme Snow Depth (cm)	68	119	31	15	0	0	0	0	0	18	27	45
Date (yyyy/dd)	1981/ 17	1982/ 14	1984/ 01	1987/ 01	1981/ 01	1981/ 01	1981/ 01	1980/ 01	1980/ 01	1988/ 12	1987/ 21	1989/ 30

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	20.0	15.3	8.1	0.43	0.0	0.0	0.0	0.0	0.0	0.0	3.1	13.5	60.3	C
> 0 °C	11.0	13.0	23.0	29.6	31.0	30.0	31.0	31.0	30.0	31.0	26.9	17.6	304.9	C
> 10 °C	0.67	0.71	5.8	18.6	29.6	30.0	31.0	31.0	29.9	24.5	7.3	1.6	210.5	C
> 20 °C	0.0	0.0	0.81	3.2	14.0	25.4	30.2	29.2	17.6	4.4	0.20	0.0	124.9	C
> 30 °C	0.0	0.0	0.0	0.05	0.67	3.9	5.4	2.7	0.52	0.0	0.0	0.0	13.2	C
> 35 °C	0.0	0.0	0.0	0.0	0.0	0.05	0.40	0.05	0.0	0.0	0.0	0.0	0.50	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	2.1	3.0	6.9	18.4	29.7	30.0	31.0	31.0	29.8	26.5	13.9	4.1	226.2	C
<= 2 °C	30.6	27.4	27.1	16.3	4.2	0.10	0.0	0.0	0.90	8.8	21.5	29.3	166.2	C
<= 0 °C	29.0	25.3	24.1	11.6	1.3	0.0	0.0	0.0	0.19	4.6	16.2	26.9	139.0	C
< -2 °C	25.6	21.4	18.1	4.6	0.0	0.0	0.0	0.0	0.0	0.85	8.5	20.0	98.9	C
< -10 °C	12.9	9.9	4.2	0.10	0.0	0.0	0.0	0.0	0.0	0.0	0.55	7.3	34.9	C
< -20 °C	2.2	1.5	0.05	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.50	4.3	C
< - 30 °C	0.05	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.05	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	5.4	5.1	8.5	13.4	12.8	11.2	11.4	11.1	12.3	13.1	12.7	8.1	124.9	C
>= 5 mm	2.0	1.8	2.7	5.4	5.5	4.6	5.0	5.5	5.6	5.2	5.0	3.1	51.3	C
>= 10 mm	0.95	1.1	1.2	2.7	3.3	2.7	3.2	3.3	3.3	2.5	3.0	1.5	28.8	C
>= 25 mm	0.10	0.24	0.24	0.33	0.57	0.60	0.71	0.95	1.1	0.30	0.40	0.10	5.7	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	11.1	8.1	5.8	1.6	0.0	0.0	0.0	0.0	0.0	0.50	3.9	9.2	40.0	C
>= 5 cm	3.2	2.1	1.7	0.29	0.0	0.0	0.0	0.0	0.0	0.20	1.1	3.4	12.1	C
>= 10 cm	0.86	0.57	0.38	0.0	0.0	0.0	0.0	0.0	0.0	0.10	0.30	1.1	3.3	C
>= 25 cm	0.0	0.05	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.0	0.05	0.05	0.15	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	15.1	12.2	12.8	14.2	12.8	11.2	11.4	11.1	12.3	13.2	15.3	15.1	156.6	C
>= 5 mm	5.5	4.0	4.5	5.8	5.5	4.6	5.0	5.5	5.6	5.4	6.1	6.6	63.9	C
>= 10 mm	1.9	1.8	1.7	2.7	3.3	2.7	3.2	3.3	3.3	2.7	3.4	2.8	32.6	C
>= 25 mm	0.14	0.38	0.24	0.33	0.57	0.60	0.71	0.95	1.1	0.35	0.50	0.25	6.2	C

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	0.4	4.7	10.5	4.9	0.9	0	0	0	21.4	C
Above 18 °C	0	0	0.2	2	17.6	65.4	106.9	79	28.6	1.7	0	0	301.5	C
Above 15 °C	0	0	1.5	7	45.4	130.6	193.2	159.8	70.4	9.4	0.3	0.1	617.7	C
Above 10 °C	0.1	0.1	6.7	30.8	135.8	270.4	347.9	312.5	186.7	52.6	6.8	0.9	1351.3	C
Above 5 °C	1.7	2.3	24.8	99.2	275.6	420.1	502.9	467.5	332.8	157	36.9	6.9	2327.7	C
Above 0 °C	14.4	20.6	77.3	222.8	430	570.1	657.9	622.5	482.8	305.5	119.9	33.3	3557.2	C
Below 0 °C	188.3	143.4	65.6	4	0	0	0	0	0	0	17	112.5	530.8	C
Below 5 °C	330.6	266.2	168.1	30.3	0.6	0	0	0	0	6.5	84	241.2	1127.5	C
Below 10 °C	484	405.2	305	112	15.8	0.3	0	0	3.9	57.2	203.8	390.2	1977.3	C
Below 15 °C	638.9	546.3	454.8	238.2	80.4	10.5	0.3	2.2	37.6	168.9	347.4	544.4	3069.9	C
Below 18 °C	731.9	631	546.5	323.2	145.6	35.3	7	14.5	85.8	254.2	437.1	637.3	3849.4	C

Frost-Free

1981 to 2010 Canadian Climate Normals station data
Frost-Free
	Date/Days	Code
Average Date of Last Spring Frost	May 04	D
Average Date of First Fall Frost	Oct 12	D
Average Length of Frost-Free Period	160 Days	D

1981 to 2010 Canadian Climate Normals station data
Frost-Free
Probability of last temperature in spring of 0 °C or lower on or after indicated dates	10%	25%	33%	50%	66%	75%	90%
Date	May 22	May 16	May 10	May 04	Apr 27	Apr 27	Apr 24
Probability of first temperature in fall of 0 °C or lower on or before indicated dates	10%	25%	33%	50%	66%	75%	90%
Date	Sep 23	Oct 02	Oct 09	Oct 13	Oct 15	Oct 17	Oct 24
Probability of frost-free period equal to or less than indicated period (Days)	10%	25%	33%	50%	66%	75%	90%
Days	132	150	155	158	160	166	173

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

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.

ILDERTON BEAR CREEK

Province/Territory

Latitude (dd mm):

43 03 N

Country

CAN

Longitude (ddd mm):

81 26 W

Time Zone

EST

Latitude (decimal degrees):

43.05 N

Climate ID:

6143722

Longitude (decimal degrees):

81.43 W

WMO ID:

Elevation (m):

266.7

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	2001	21	1	7512	99.5
Standard Deviation	1981	2001	21	1	7512	99.5
Daily Maximum (°C)	1981	2001	21	1	7513	99.6
Daily Minimum (°C)	1981	2001	21	1	7512	99.5
Extreme Maximum (°C)	1971	2001			10874	99.8
Extreme Minimum (°C)	1971	2001			10873	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	2001	21	1	7548	100
Snowfall (cm)	1981	2001	21	1	7548	100
Precipitation (mm)	1981	2001	21	1	7548	100
Snow Depth at Month-end (cm)	1981	2001	21	6	208	97.2
Extreme Daily Rainfall (mm)	1971	2001			10885	99.9
Extreme Daily Snowfall (cm)	1971	2001			10885	99.9
Extreme Daily Precipitation (mm)	1971	2001			10885	99.9
Extreme Snow Depth (cm)	1980	2001			5889	88.9

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	2001	21	1	7486	99.2
> 0 °C	1981	2001	21	1	7486	99.2
> 10 °C	1981	2001	21	1	7486	99.2
> 20 °C	1981	2001	21	1	7486	99.2
> 30 °C	1981	2001	21	1	7486	99.2
> 35 °C	1981	2001	21	1	7486	99.2

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	2001	21	1	7486	99.2
<= 2 °C	1981	2001	21	1	7486	99.2
<= 0 °C	1981	2001	21	1	7486	99.2
< -2 °C	1981	2001	21	1	7486	99.2
< -10 °C	1981	2001	21	1	7486	99.2
< -20 °C	1981	2001	21	1	7486	99.2
< - 30 °C	1981	2001	21	1	7486	99.2

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	2001	21	1	7548	100
>= 5 mm	1981	2001	21	1	7548	100
>= 10 mm	1981	2001	21	1	7548	100
>= 25 mm	1981	2001	21	1	7548	100

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	2001	21	1	7548	100
>= 5 cm	1981	2001	21	1	7548	100
>= 10 cm	1981	2001	21	1	7548	100
>= 25 cm	1981	2001	21	1	7548	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	2001	21	1	7548	100
>= 5 mm	1981	2001	21	1	7548	100
>= 10 mm	1981	2001	21	1	7548	100
>= 25 mm	1981	2001	21	1	7548	100

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	2001	21	1	7486	99.2
Above 18 °C	1981	2001	21	1	7486	99.2
Above 15 °C	1981	2001	21	1	7486	99.2
Above 10 °C	1981	2001	21	1	7486	99.2
Above 5 °C	1981	2001	21	1	7486	99.2
Above 0 °C	1981	2001	21	1	7486	99.2
Below 0 °C	1981	2001	21	1	7486	99.2
Below 5 °C	1981	2001	21	1	7486	99.2
Below 10 °C	1981	2001	21	1	7486	99.2
Below 15 °C	1981	2001	21	1	7486	99.2
Below 18 °C	1981	2001	21	1	7486	99.2

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	2000	19	0	19	95.0
Average Date of First Fall Frost	1981	2000	19	0	19	95.0
Average Length of Frost-Free Period	1981	2000	19	0	19	95.0
Probability of last temperature in spring <= 0°C, on or after (Date)
10 %	1972	2000	28	3	25	86.2
25 %	1972	2000	28	3	25	86.2
33 %	1972	2000	28	3	25	86.2
50 %	1972	2000	28	3	25	86.2
66 %	1972	2000	28	3	25	86.2
75 %	1972	2000	28	3	25	86.2
90 %	1972	2000	28	3	25	86.2
Probability of first temperature in fall <= 0°C, on or before (Date)
10 %	1972	2000	28	3	25	86.2
25 %	1972	2000	28	3	25	86.2
33 %	1972	2000	28	3	25	86.2
50 %	1972	2000	28	3	25	86.2
66 %	1972	2000	28	3	25	86.2
75 %	1972	2000	28	3	25	86.2
90 %	1972	2000	28	3	25	86.2
Probability of frost-free period equal to or less than indicated period (Days)
10 %	1972	2000	28	3	25	86.2
25 %	1972	2000	28	3	25	86.2
33 %	1972	2000	28	3	25	86.2
50 %	1972	2000	28	3	25	86.2
66 %	1972	2000	28	3	25	86.2
75 %	1972	2000	28	3	25	86.2
90 %	1972	2000	28	3	25	86.2

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Date modified:: 2024-03-27

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Canadian Climate Normals 1981-2010 Station Data

Temperature and Precipitation Graph for 1981 to 2010 Canadian Climate Normals
ILDERTON BEAR CREEK

Legend

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Canadian Climate Normals 1981-2010 Station Data

Temperature and Precipitation Graph for 1981 to 2010 Canadian Climate NormalsILDERTON BEAR CREEK

Page details

Temperature and Precipitation Graph for 1981 to 2010 Canadian Climate Normals
ILDERTON BEAR CREEK